THE INDUSTRY'S RECOGNIZED AUTHORITY
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~ PRODUCTS |
LARGEST PRODUCER CIRCULATION IN THE HISTORY OF THE FIELD
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EL Precision Fine Grinding
XN
folgelel Slot Maalela Mhi-t \-1at_laleMeial | lo! 1g
WILLIAMS.
rolleramilis
Uniformly accurate grinding-—from 20 mesh to micron sizes! Operation is completely automatic from raw material feed through blending, grinding, sizing and delivery of finished product.
Adjustment for size control made instantly while mill is in operation. . . feed rate is entirely self-adjusting . . . operation is completely dustfree . .. continuous upward air current prevents build-up of fines that impair operation, and carries ground materials to classifier where finished material is discharged and oversize tailings are returned for further grinding .. . takeup for wear is continuous and automatic Automatically controlled hot air can be introduced for simultaneous drying and increased grinding of materials containing moisture.
Get full details of these and many other Williams features. . .
Write for
a
oe oe
— ———
a
WILLIAMS PATENT CRUSHER & PULVERIZER CO.
800 St. Lovis Ave.
2
Hammer Mills
be
St. Lewis 6, Me.
DOERS 2
a ae) & x. BQ
Helix-Seal Millis Air Separators Vibrating Screens Feeders !mpactors OLDEST AND LARGEST
MANUFACTURER OF HAMMER MILLS IN THE WORLD
TRIPLE DIRT DEFENSE
-.- yours in LINK-BELT belt conveyor idlers eg TT
this grease seal’ is 3 seals in 1 :
Labyrinth sealsesce seeeeeceses ' e* Contact seal ecccoeeeeeseseses oe?*
Grease-filled clearanceseseeceseeseeeeee®
[his compact, one-piece cartridge — a Link-Belt exclusive — is industry's sim- plest and most effective seal. Its three-way protection holds grease in, keeps dirt out for long bearing life. What’s more, in- spection and maintenance are simplified. No springs, clips and other small parts to lose . . . no metal-to-metal contact.
This superior seal is one of many long- life Link-Belt features. Others © husky, high quality bearings @ precision-machined concentric rolls © strong, rigid frames ® convenient grease fittings @ precision shaft-to-shell assembly
These features are standard in most Link-Belt idlers . . . industry's only com-
prehensive line. For details on specific Fi. 07
series, call your Link-Belt office or au- “ Ta |
thorized stock-carrying distributor. Or ” Reg: Fad 4 a >
write for Book 2416. ‘. Z tn el
BELT CONVEYOR IDLERS
LINK-BELT COMPANY: Executive Offices, Prudential Plaza, Chicago 1. To Serve Industry There Are Link-Bele Plants, Sales Offices. Stock ¢ Branch Stores and Distributors in All Principal Cities. Export Office, New York Canada, Scarboro (Toronto 14): Australia. Marricth South Africa, Springs. Representatives Throughout the World Enter 1697 on Reader Card
ROCK PRODUCTS, November, 1956
THOSE SUBSTITUTE PARTS ARE SO NOISY! I HAVEN'T SLEPT A WINK ALL DAY!
DON'T WORRY, DEAR — THAT MACHINE'LL BE DOWN FOR REPAIRS IN NO TIME 0
You can’t tell the difference?
Take a substitute anti-friction bearing. Probably looks exactly like a Caterpillar part. But remember, there are many different bearings that fit a shaft and bore, yet only one may be right for maximum performance—the one designed especially for the machine —the one tested, speci- fied and supplied by Caterpillar.
The same with seals. While seals may look alike, the material can vary in tensile strength, resiliency and hard- ness. CAT® lip-type seals meet special standards that assure the long-life reputation of Caterpillar machines. They are matched to the parts they protect. They're right for their particular job.
Why take chances with substitute parts? You're sure of finest quality and maximum life with Caterpillar parts!
Better see your Caterpillar Dealer's Salesman— and get Cat original parts every time.
Caterpillar Tractor Co., Peoria, Hlinois, U.S.A.
Enter 1006 on Reade: Card
Each Cat anti-friction bearing and lip-type seal has been proved best for its particular
application. Each one is assigned a Caterpiliar part number — used only for that pa that application. Can you be sure with so-called “will fits” and “‘look-alik
CATERPILLAR
*Caterpitiar and Cat are Registered Trademarks of Cater: lias (1!
ROCK PRODUCTS, November, 1956
B.EGood
85 million tons handled at belt cost of 9¢ per 1000 tons
ORE than 85 million tons of M copper ore have ridden that B. F. Goodrich conveyor belt since it was first installed 17 Chile Exploration Company, Chuqus camata, Chile
In all that time the belt has cost the company less than $180 for repairs And the company reports it still looks good for two more years! Here are some of the reasons for the long life,
years ago at the
low maintenance costs
The square-edge construction, found only in B. F. Goodrich belts, insures greater flexibility, helps the bele travel more easily, with less strain, less wear This is because each ply of fabric runs
ROCK PRODUCTS, November
only from one edge of the belt to the other. Edges are b rate. Belt troughs perfectly whether loaded or empty
Special chemicals, developed by B. F. Goodrich, are added to the rubber help it
resist the effects of age, sun and weather
vonded, won't sepa
to keep it ‘live’ and elastic
Belts are made under uniform tension so that all fibers work together; seam less plies are used to avoid weak spots patented layers. called added to stand hard blows treatment is included to protect fabric This is why so many B. F. Goodrich beles—like the one in the picture have far outlasted other medium-priced
“breakers” are mildew
1956
belrs. and h Z of hun dreds of ind Let your 1OwWw you yor belt ie cost
Con
EGoodrich)
INDUSTRIAL PRODUCTS
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of Aid to Business Progress
° 2 ¢ é fuent |
YOU EXPECT MORE EDITORIALLY FROM ROCK PRODUCTS AND YOU GET IT EVERY MONTH
CONTENTS
ROCK PRODUCTS
$33 Billion Road Program Means Growing Pains Sand and gravel and ready-mixed concrete industries must pre pare expanded facilities to supply materials Ezra C. Knowlton
Celotex Corporation Doubles Gypsum Capacity at Port Clinton Spend $3.5 million for heavy media plant, modern wallboard plant, and expanded calcining department Kenneth A. Gutschick
Kansas Plant Sets Turnpike Crushing Record Triple-unit set-up gets production up to 400 t.ph. despite high ratio crushing and stubborn limestone
How Trulite Is Made from Coal Refuse Use up-draft traveling grate stoker operated at 2500 deg. F. by Trulite Corp., Ceredo, W. Va., to produce lightweight aggregate Kenneth A. Gutschick
Gravel Plant Cuts Non-Spec Material to 2 Percent in Products H1.M.S. process reduces objectionable material from 15 percent in deposit George Schenck
Synthetic Silicates from Diatomite and Lime Vicro-Cel synthetic minerals made in Johns-Manville Corporation's new plant at Lompoc, Calif., have many uses Marion L. Briggs
A.S.T.M., Pacific Meeting
American Mining Congress
Directors’ meetings of N.S. & G.A. and N.R.M.C.A.
CONCRETE PRODUCTS
Centralized Radio Dispatching Boosts Efficiency Anderson Concrete Corp., Columbus, Ohio, a pioneer in two-way radio, has found many economies in its use lee Hinder and Andrew Hilliard
Illinois Brick Co. Goes to Autoclaves at Block Plant No. 2 Spend $400,000 for new autoclaves and accessory equipment at Blue Island plant to produce lightweight block with low moisture content and high early strength Hubert C. Persons
Open Up New Markets for Precast Lightweight Concrete Products Structural Precast Concrete Corp., Cincinnati, Ohio making pre cast products using perlite and expanded shale aggregate Hubert C. Persons
Merchandising Ready-Mixed Concrete Jas. A. Nicholson
DEPARTMENTS
What's Happening 13 Editor's Page—Safety: A Way of Life 17 Hints and Helps Labor Relations 21 New Machinery People in The News 27 Recent Patents
Industry News
ROCK PRODUCTS te published monthly by MACLEAN-HUNTER Publishing
37 50 56 110
three years, $20.00. All ether foreign one year, $12.00; two years, $22.00; three $30.00. Twenty-five cents for single copies. Canadian subscriptions and
Corporation, 70 W. Monroe St. Chicago 5, tilineis: PF. D. Allen, President years, = remittance may be sent in Canadian funds te ROCK PRODUCTS FP. O. Bex 100
Copyright, 1056, by Maclean-Hunter Publishing Corporation. Entered as second class matter, jan. 30. 1996, at the Chica 1t., post office under the act of Terminal “A.” Terente, Canada
Mar. 3, 1870. Additional entry at Leng Prairie, Minn
SUBSCRIPTION INFORMATION Subscription Price: United States and Possessions, Canada one year, $2.00; two
years, $3.00: three years, $4.00. Pan American, one year, $6.00; two years, $14 00. tadustrial Arte tadex
Te Subseribers—Date on wrapper indicates issue with which your subscription expires in writing te have address changed, give old as well as new address
ROCK PRODUCTS is indexed regularly by Engineering index, inc. and the
NOVEMBER 1956
Dit) eS
GEORGE C. LINDSAY, Editor P. D. ALLEN
NATHAN C. ROCKWOOD, Editor Emeritus 1917-1956 GENERAL MARAGER
R. S$. TORGERSON, Managing Editor WAYNE D. ADAMSON, Jr
JOSEPH N. BELL, Cement Editor Director Research end Development WALTER B. LENHART, Associate Editor
; MARY A. WHALEN MRS. M. K. SMITH, Assistant Editor Subscription Director MISS MARGARET A. MARTIN, Editorial Assistant Cc. M. HANCOCK
Production Manager
CONTRIBUTING EDITORS
Victor J. Azbe James A. Barr, Jr. Hubert C. Persons
James A. Nicholson
Tip Brown Cc. P. TEATS
Field Representative
Here Are Three Articles You ll Want to Read
Growing Pains Is the rock products industry ready to meet the challenge of the $33 billion dollar federal highway program with expanded production facilities?
Doubling Gypsum Capacity Spend $3.5 million for heavy media separation unit to permit singl level quarry operation, build new wallboard and packing plant, and expand calcining department.
Autoclaves for Better Products Low moisture content and early strength are must requirements i meeting many specifications for concrete products. Autoclave solved the problem for this manufacturer.
DISTRICT OFFICES
EASTERN AREA WESTERN AREA Mille Bidg., San Francisec:
Reginald W. Davis, Manager George K. Konz, Manager Tel. Garheld 1.7950 y gen H
Charles H. Daly, Assistant Gerald A. White nde ‘
522 Fifth Ave., New York 36 Harold R. Dunlop, LOS ANGELES
Tel. Murray Hill 2-7888 Kepresentatives Duncan Seott & Company GERMANY
9 West Monroe St 2978 Wilshire Bivd ‘ a}
CENTRAL AREA Chicago 3 Los Angeles 5 Allee 0. ¥
George F. McKay, Manager Te Randolph 6.2802 Tel. Dunkirk 8-415! James K
HW Bidg., Cleveland 15 Rasteaae J anna dg levelan SAN FRANCISCO LONDON, ENGLAND _ =
Tel. Main 1-4362 bur cou & Company Harold F. Charles, Managing
(2) SECONDARY BREAKING SKULL CRACKER
Use ONE HYSTAWAY to do the work of 2 machines
«+. and reduce operating costs!
Sitinieites mien WITH THE HYSTAWAY CRANE ONI man and ON!
new or used Caterpiliar " J machine can handle all secondary breaking and Diese! Tractor combines
bulldozer and crane (for drop ball in secondary / the Hystaway idea pays off in reduced operating
breaking) costs——because bulldozer and drop-ball operation can be performed by the same machine. MAINTENANCE WORK is also economicall
performed by this fast-moving bulldozer-cran
cle an-up work, Many quarry operators have fou
combination, Lifting sereens and motors for crus! repairs and building and maintaining haul roads are but a few of the many bonus jobs
for the Hystaway.
INVESTIGATE the possibilities of the Hystaway in your operation now.
FOR DETAILS, CALL YOUR CATERPILLAR TRACTOR CO. DEALER * He is also your HYSTER Dealer -
"Caterpillar is the registered trademark of the Caterpillar Tractor Compo
2918 N.E. Clackamas Street, Portland 8, Oregon, a YS IE ie COMPANY 1818 N. Adams Sireet, Peoria 1, Illinois. Portland, Oregon; Peoria, Illinois; Nijmegen, The Netherlands
Enter 1695 on Reader Card ROCK PRODUCTS, November, 1956
my YouCon WEE ” Coe More Protite in
Looking at a Rotary Kiln Installation
through the eyes of
TRAVLOR
Experience
rely on Traylor’s vast experience to provide
them with the most efficient and profitable rotary kiln installations. Built on the average of over 1 a month for the last 15 years, more than 175 Traylor Rotary Kilns are currently engaged in the calcining, roasting and chlori- dizing, volatilizing, sintering and nodulizing of over 20 different products
Trey biggest producers of lime and cement
This wide experience has equipped Traylor engineers with a keen understanding of the thermo-processing requirements of modern lime stone and cement production. Exclusive Traylor design features are providing producers with a high degree of product control and a low level of maintenance costs.
Every Traylor Rotary Kiln is ‘“Traylor-Made”’ to meet the production requirements of a specific
process. Sizes have been made from the up to 12’ in diameter and 450’ in lengt!
Complete specifications and al! the fact profit-producing advantages of Tray Kilns are contained in Bulletin 11] copy is yours on request
TRAYLOR ENGINEERING & MANUFACTURING CO. $38 MILL ST, ALLENTOWN, PA.
SALES OFFICES New York + Chicago + San Francie CANADIAN MFR.: Canadian Vickers, Lid.. Montreal, P. 0
ROTARY KILNS
ROCK PRODUCTS, November, 1956
Enter 1005 o
PAIRBANKS Monset
e.ecrron RAN ROA
———— inane
The story of Fairbanks-Morse Electronic Scales in seven volumes
Just off the press—seven new bulletins about Fairbanks-Morse electronic weighing and batching machinery. The covers pretty well identify them- selves as illustrated above, except that you might not know that EPC is a completely automatic batching system that operates from punch cards or that Batchetron is a slightly less automatic batcher with quick provision for manual preset of the cycle... or that CDO is a “read-out” instrument that will translate the weight message of any of the other six into the lan- guage ‘“‘spoken’’ by automatic typewriters and automatic adding machines and automatic tape punches.
Write today for one or more of the new bulletins on Fairbanks-Morse electronic weighing and batching. Fairbanks, Morse & Co., Scale Division, Dept. RP-11, 600 South Michigan Avenue, Chicago 5, Illinois.
FAIRBANKS-MORSE
@ name worth remembering when you want the BEST
SCALES © PUMPS © DIESEL LOCOMOTIVES AND ENGINES © ELECTRICAL MACHINERY © RAIL CARS © HOME WATER SERVICE EQUIPMENT ¢ MOWERS © MAGNETOS
8
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ROCK PRODUCTS, November, 1956
Gulf Quality Lubricants and Fuels
contribute to economical equipment operation at Alabama Aggregate Company
(Below) Part of the fleet of hauling units operated by the Alabama Aggregate Company, Fortson, Ga. (Right) R. E. McWaters, Superintendent, shows Gulf Sales Engineer Charles J. Cason, Jr., a connecting rod from the engine of the diesel electric set that provides electric power for the plant. Recently disassembled for inspection, all parts of this engine were found to be in excellent condition after over 7000 hours of continuous operation with Gulf Super-Duty Motor Oil.
| a ee ' sk the Alabama Aggregate people—and many ing service helps us select just the right fuels and other progressive organizations in the in- lubricants for every piece of equipment dustry—why they prefer Gulf products, and The chances are your operation can also bene- you'll probably get an answer something like fit from Gulf quality products and helpful service. this: “Gulf lubricants provide an extra margin of Consult the telephone directory for the number protection for equipment, keep maintenance costs of your nearest Gulf office, and ask a Gulf Sales at rock bottom levels. Gulf fuels help us to get Engineer to call.
top engine performance because they burn evenly Gulf Oil Corporation * Gulf Refining Company and completely. And Gulf’s cooperative engineer- 1822 Guif Building, Pittsburgh 30, Po
THE FINEST PETROLEUM PRODUCTS FOR A
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ROCK PRODUCTS, November, 1956 Y
A QUARTER CENTURY OF
A CATERPILLAR FIRST A CATERPILLAR FIRST the “Hi-Electro”’ hardened —the stainless-steel! piston cylinder liner protector
A CATERPILLAR FIRST A CATERPILLAR FIRST the chemically conditioned —the steel-backed aluminum cylinder liner bearing
A quarter of a century ago, Caterpillar created mobile diesel power, For the first time, the power of the diesel engine was unleashed from its bulky foundations and put to work in the field—compact, economical. Here was diesel power of simple design, with no need for experts to operate and maintain. Here was diesel power with the lugging ability to knuckle down to the tough jobs.
The introduction of mobile diesel power was a tremen- dous advance in many fields. It provided efficient diesel power for tractors, motor graders, earthmoving equipment .. . for the work boat, the gin, the locomotive, the oil rig, the municipal plant ... for any application in which steady, low-cost power is crucial, And everywhere, CAT® Diesel Engines proved themselves durable and dependable. They established Caterpillar as the leader in diesel engineering.
Today, hundreds of thousands of modern heavy-duty Cat Diesels are on the job in every corner of the world. And still the research continues. Study and experiment go ahead constantly in Caterpillar laboratories. Special test- ing machines help point the way toward new advances. Manufacturing techniques improve, too, in the world’s largest diesel engine factory—where the quality of work- manship is the standard for the industry.
A modern world must have modern power—more and more of it. It is coming, in ever increasing quantity, from the production lines of Caterpillar, the leader.
Caterpillar Tractor Co., Peoria, Illinois, U.S. A,
CATERPILLAR’
*Caterpitiar and Cat are Registered Trademarks of Caterpitier Tractor Co
DIESEL POWER FOR PROGRESS
DIESEL LEADERSHIP
A CATERPILLAR FIRST —interchangeable, adjustment-free fuel injection equipment
; A CATERPILLAR FIRST A CATERPILLAR FIRST
—superior lubricants
A CATERPILLAR FIRST
the service meter
—the capsule-type injection valve (detergent oils)
FL. Smidth & Co. ers and Machinery Manufacturers FL. Smidth & Co., Ltd,
17 Vigerslev Alle 11 West 42nd Street 105, Piccadilly Copenhagen, Denmark New York 36, N. ¥ Londan, W. 1, England
FL. Smidth & Co., A/S
FL. Smidth & Cie France FL. Smidth & Co of Canada Ltd F L Smidth & Co (Bombay) Private Ltd. 80 Rue Taitbout 11 West 42nd Street 42 Queen's Road Paris (Ve) France New York 36, N. Y Bombay, India
nter 1007 on Reader Card 12 ROCK PRODUCTS, November, 1956
What’s Happening
IN OTHER FIELDS OF INTEREST TO THE ROCK PRODUCTS INDUSTRY
Nov ember, 1956
Radio and television are being used as engineering aids on the Table Rock dam construction on the White River near Branson, Mo. A cableway process of construction is used, in which cables carrying an 8- and a 4-cu. yd, bucket are stretched across the river between steel towers. A TV screen in the head operator’s booth shows the movement of the cable hoist drums (Alternate spokes on drums are painted white to give a better TV image.) This, plus the radio hookup to an assistant in the valley below, helps the operator guide the bucket to the pouring site.
More than 1600 25-ton concrete tetrapods are being placed on the seaward side of a new breakwater in the Pacific Ocean near Crescent City, Calif. The four-pronged objects interlock to form a permeable facing that permits quick dissipation of the uplift power left by receding waves; they also provide a rough surface that will absorb the maximum amount of wave energy. This is said to be the first use in the Americas of tetrapods; perfected by French scientists, they have been used effectively in harbors of North Africa.
Melting and welding of graphite has been announced at National Carbon Co.'s new research laboratory at Parma, Ohio. The technique suggests the pos- sibility of prefabricating sheets and panels for the assembly of nuclear reactor moderators, which at present must be built up from graphite blocks. Graphite’s neutron-slowing ability makes possible the self-sustaining chain reaction necessary in harnessing nuclear energy
Coal mixed with water to form a slurry will be piped across 110 miles between Pittsburgh Consolidation Coal Co.’s Georgetown, Ohio, mine and Cleveland Electric Illuminating Co.’s Eastlake, Ohio, power station. A contract calls for the delivery of 18,000,000 tons of coal over the next 15 years, beginning early in 1957. Three pumping stations are located about 35 miles apart, moving the mixture at the rate of 150-t.p.h.
The rumble of 23 coal- and sand-laden barges and a derrick boat loose from their moorings rolled like thunder over the Pittsburgh area recently when bridge piers withstood their resounding impact. The mass runaway began about 4 a.m. when three barges broke loose and started down the Monongahela River, knocking others loose in their path.
A discovery classed as significant was the unearthing recently in a grave in Japan of stone instruments believed to be 5000 years old. It may upset the present archeological theory that Japanese cultural history dates back to the new stone age. The relics are believed to predate the new stone age period.
Heavy construction awards, nationally, totalled $17 billion for the first 40 weeks of 1956, as reported in Engineering News-Record. This was an increase of
16 percent above the corresponding period in 1955
ROCK PRODUCTS, November, 1956
WHAT'S HAPPENING
Development of a synthetic porcelain ceramic has been announced by Sauereisen Cement Co., Pittsburgh, Penn. Ceramic-like products for industrial and technical use can be made by a cold-set process without kiln firing. A dry filler and a liquid binder are mixed as it is used, with final setting taking 6-12 hours. Special shapes may be cast in molds of linoleum, cardboard, and the like, where quantity does not justify the use of machine molds, and non-porosity can be attained by impregnating the cement with various
materials such as varnish or wax.
Although rejecting the scheme of constructing a concrete tube for traffic in the Firth of Forth, a panel of British experts is said to consider the idea “practical,” and favor its use elsewhere in the United Kingdom where conditions are suitable. The proposed 3800-ft. long subway would have had reinforced concrete segments, joined by a watertight seal to form a tube enclosing two 22-ft. wide x 16-ft. 6-in. high vehicle routes. It would have been partly buoyant, pinned by large diameter piles to the bed of the Forth,
with ships passing overhead.
To prevent erosion of the Atlantic coastline, jetty-like structures of asphalt and sand, called groins, are being constructed. Forty-four of the groins have been built along the Maryland shore, at a cost of less than $10 per linear foot. A 20-ft. wide apron varies in depth from 12 in. at the water end to 4 in. at the inshore end. Steel mats are laid, over which hot-mix asphalt is poured. The apron is surmounted by a pyramidal dike, 8 ft. at the base and increasing in height from 10 in. to 3 ft. as it goes inland.
Blasting near “Rockingham,” the 222-year-old colonial dwelling in New Jersey which General Washington once used as headquarters, made it necessary to move the house a half mile away. A separate stone building housing the kitchen also was moved. Kingston Trap Rock Quarry Co., owner of
the adjoining property, paid the cost of the moving project.
Contract awards for the 37 states east of the Rockies totaled $17,416,272,000
for the first 8 months of 1956, up 8&8 percent over the corresponding period of 1955, according to an F. W. Dodge report. Nonresidential contracts were $6,201,801,000, up 9 percent; residential, $7,330,820,000, up 1 per- cent; and heavy engineering, $3,883,651,000, up 22 percent.
An order for 400 covered hopper 70-ton cars for handling of bulk cement has been placed by Lehigh and New England Railroad, with delivery specified in ample time for the 1957 peak shipping season. Financing of the $3,- 666,500 investment by conditional sales contracts was arranged through a group of Philadelphia financial institutions.
From Berlin come reports that East German scientists have developed a new building material called silica-stone, consisting mainly of quartz, which can be produced from waste materials. The degree of porosity can be varied so that it can be used for filtering, and it is said to insure the necessary “breathing” capacity of walls.
Simplotite is the name given a new mineral, calcium tetravanedite, in honor of J. R. Simplot, who owned the mine in which the mineral! first was found. Mr. Simplot is principal owner of large phosphate mines and plants in Idaho.
ROCK PRODUCTS, November, 1956
THE
EDITORS
at CONSTRUCTION AGGREGATES CORP., Ferrysburg, Mich.
stone hand pickers!
Construction Aggregates Corp. is located on the
Grand River near Lake Michigan, in western Michigan Output averages 1000 t.p.h. A large percentage of
the finished product is shipped by self-unload-
ing lake boats to cities on the Great Lakes.
Construction Aggregates regularly produces 150 dif- ferent specifications of material including foundry
sand, Annual production is nearly 11, million tons.
Minus 1,” gravel from a scalping screen
Eagle Log Washer which breaks uy
fed to an
and ish out 80% plus of the soft stone and hard
encountered
s
lay lumps
Before installing the log washer
four or five men were required at the screen to pick out
va soft stone and clay lumps—-now only one man is <. required to watch the screen, The Eagle Log Washer assures material that will meet specification
WATER SCALPING.
The replac eable corrugated paddle shocs of wear r CLASSIFYING TANKS
FINE MATERIAL WASHERS
sistant Ni-Hard alloy iron have a washboard effect in abrading and scrubbing / gravel, crushed stone or ore. Tubular stcel paddle shafts a j 5 . non-deflecting, Water-lubricated, Hydro-tex marine ty; winti«x or eliminates bearing troubles. Truly a log washer you can t
f t and that a \ ipa will make money for you. Send for 44-page Catalog
COmPLETE LOG WASHERS OREOGES
COARSE MATERIAL $ WASHERS DREDGE LADDERS
I ring
EXPERIENCE, PROGRESS, SERVICE, SINCE 1872
EAGLE IRON WORKS
137 HOLCOMB AVE., DES MOINES, IOWA
Enter 1008 on Reader Card ROCK PRODUCTS, November, 1956
15
for tough screening jobs...
15
Enter 1009 on Reader Card
INDUSTRIA SCREENS
You can depend upon CF «I Industrial Screens to give long service life with little downtime no matter how tough your screening job. That’s because CFa&I Screens are made from specially selected steel which is crimped and woven extra tightly to assure high production throughout screen life—even when the screens are subjected to severe abrasion, corrosion or
high temperatures.
Next time you need an industrial screen, be sure you investigate CFaI Industrial Screens—you’ll be glad you did.
SPACE SCREEN
THE COLORADO FUEL AND IRON CORPORATION
THE COLORADO FUEL AND IRON CORPORATION—Albuquerque ~- Amarillo - Billings - Boise - Butte - Casper Denver + Ei Paso + Ft. Worth + Houston ~ Lincoln (Neb.) - Los Angeles - Ooklond - Okichome City Phoenix + Portiand - Pueblo + Salt Lake City + Son Antonio + San Francisco + Seattle - Spokane ~ Wichita WICKWIRE SPENCER STEEL DIVISION—Atlonta + Boston + Buffalo + Chicago - Detroit + New Orleans New York + Philadelphia + CF&! OFFICE IN CANADA: Toronto
CANADIAN REPRESENTATIVES AT: Calgary + Edmonton + Vancouver + Winnipeg
ROCK PRODUCTS, November, 1956
EDITOR'S PAGE
Safety: A Way of Life
LANT ACCIDENTS can be controlled completely—if proper condi
tions are met. That’s the belief of Robert Cox, treasurer of Ash
Grove Lime and Portland Cement Co. And that’s what he told lime producers at an October operators’ meeting. He should know, for one of his company’s plants has gone nearly five years without a single lost-time accident!
What’s the secret to such a fine record? There’s no secret, really It’s education—spreading the word of known safety principles—and attitude that count most. According to Mr. Cox, the latter is the key
An analysis of the company’s safety record at its separate plant yields a positive answer to the problem of safety. Look at the work conditions at all plants: the same management, the same fervent di sire to further the welfare of workers, the same tools with which to work, the same program of supervision. Basic safety program was th same in design, execution and management. Yet, a single plant « tablished an outstanding safety record. Records at other plants ar far above normal, but the one is most superior. Why?
Proper work attitude of each individual employe combined in cooperative effort to do the right thing in the safe way every time ha to be the answer. But there has to be complete receptiveness to the ide by the whole group. Each must want to work safely, and each must to it that the man next to him works safely, too.
This “brother’s keeper” idea, completely accepted by every at the “record” plant, apparently was the only difference in operation among all the company’s plants. And it produced ré the simplest sense, workers at the plant with the high safety make it hard for any one of them to commit an unsafe act
Management, of course, is responsible for getting the worke: have the right outlook on safety. If it is believed that the best wa develop the attitude is by personal contact, then management sure must provide all the help, direction and equipment necessary. It must be active in the humanitarian aspect of working relations, to mak: safety program successful. The idea has to permeate the whole ma agement group. No foreman, supervisor, department head or office: can be excluded. It’s very simple; how can one sell an idea or progran if he doesn’t believe in it himself?
So, the business of safety is not a one-man proposition. It } cooperative program of a collective group in which each individua dedicated not only to his, but to his co-worker’s safety. It’s not real! a program; it’s a way of life.
Proof of success is already on the books. The zenith in safety « perience can be reached if management has a dedicated belief that the
welfare of his employes is supreme, and the employes have faith in
that management belief. You can have a perfect safety record at your plant, too,
id yo P44 (UU eee
ROCK PRODUCTS, November, 1956
‘
work at it.
The Man from
takes steps to bring you a Multiwall
STEP |
HELL TELL YOU WHY THE CEMENT INDUSTRY HAS BOUGHT MORE THAN 150 MILLION ST. REGIS STEPPED-END BAGS
Because the Stepped-end Bag was invented by the European manager (Mr Edgar Hoppe) of our International Division hecause we ve been turn ing out these bags since 1949...and because we've checked their performance under all sorts of condi tions, the Man from St Regis can give you facts and figures based on ac tual experience.
COSTS LESS THAN SEWN BAGS For instance, yo see a little table of comparative savings of t! Regis Stepped-end Bag over sewn bags. It range of savings from $1.30 per M to $1.4 depending on the bag construction. In one company, by using the St. Regis bag possible to reduce the basis weight of th from 170 Ib. to 150 Ib., resulting in a year
of $14,000 on mortar production alone
BREAKAGE 15 LESS — It's a proven fact that Stepp Bags have reduced bag breakage in the ceme dustry. For instance, by using the St. Regis Stepp end Bag
,
Company A reduced breakage to .2 Company B reduced breakage to .|_ of Company C reduced breakage to .28 of
IMPROVED APPEARANCE, STACKING, HANDLING The sq shaped package looks better . . . and the butt ing on either end allows easy identificatio product. As for stacking and handling — just users (we'll supply names if you'd like) tell you that the smooth ends make for neat ing, easier handling
St. Regis
Bag that cuts packaging costs
STEP 2
YOU TAKE THIS STEP FOR MORE INFORMATION. FILL IN THE COUPON,
Multiwall Packaging Division
St. Regis Paper Company, Dept. RP-1156 150 East 42nd Street
New York 17, N. Y.
Please send more information about the St. Regis Stepped-end Bag.
Name : Title_
Firm
Address
City
As a leading builder of gyratory crushers for more than 75 years, Allis-Chalmers has expert knowledge of crusher control problems and how best to solve them. Special controls for crushers, developed by Allis-Chalmers, offer important operating and protective features that minimize costly downtime .. . assure continuous, dependable operation.
Motor Overload Protection
‘T'wo separate sets of thermal overload relays..
one set sounds remote alarm horn and energizes warning light at slightest sign of overload. If warning is not heeded, second set of relays stops motor when temperature reaches danger point
Maximum Torque Starting Control permits maximum torque starting, when
desirable. Maximum torque starting often clears crusher jams
Jog-Reversing Controller This feature permits rocking to clear jam.
Time-Delay Undervoltage Relay Crusher rides through momentary voltage dips.
Stall Protection Motor is disconnected by instantaneous relay
when current is greater than normal peak load.
‘
For detailed information, contact your A-C representative, or write Allis-Chalmers, General Products Division, Milwaukee 1, Wisconsin.
ALLIS-CHALMERS
Type H voltage starter custom-engineered to control and protect wound-rotor motors driving
primary gyratory crushers.
ALLIS-CHALMERS
Enter 1010 on Reader Card
20 ROCK PRODUCTS, November, 1956
Labor Relations
How Would You Decide?
A ROUNDUP of day-to-day in-plant problems and how they were handled
by management men is given in cases cited below. Each incident is taken from a true-life grievance which went to arbitration. Names of some princi pals involved have been changed for obvious reasons. Readers who want the
CAN YOU DISCIPLINE a union officer for questioning the “integrity of management?”
What Happened:
j= HAMILTON complained to his
shop steward about not getting a merit raise. The union officer suggested that they go out and talk to the plant manager. When they got to the man- ager’s office, he was out. The steward told the manager's secretary to “get him here quick.” The girl called her boss on the inter-com system.
The manager rushed to his office from the plant, and when he saw that he had been summoned to meet with the worker and steward, he was quite miffed. “What do you fellows want now? I'm very busy and don't have much time to give you,” he said
When he learned of their mission, the manager took out Hamilton's personnel and production records, and discussed the reason for the turndown of the merit raise. The two men left That evening, when the steward got home, he wrote a strong letter to the plant manager. He accused the man- agement man of being “surly” and charged that the information in the employe’s file was “false, misleading and illprepared.”
When the manager received the note, he blew his top. He called the steward in and gave him a week's suspension on the grounds of insub- ordination. The steward took issue, and when the case came to arbitration, he said that the words “false,” “mis- leading” and “illprepared” were not directed personally at the plant man- ager, but were simply descriptive of the inadequate records that were be- ing kept.
What Arbitrator Al.7T. Singletary Ruled: “| find that the letter contains
ROCK PRODUCTS, November,
source of any of these cases may write to Rock PropuctTs
«4 . DO Oe
language which, on the face of it, is offensive, and questions the integrity of the plant manager as well as the accuracy and reliability of the com pany’s records, | feel that it is up to management to curb and discourage such improper conduct, and therefore, the one weeks’ suspension is not ex cessive.”
CAN YOU FIRE AN EMPLOYE for being “accident prone” if all his in juries are “very minor?”
What Happened
The company was a real stickler for safety. It carried on an continous campaign via bulletin boards, meet- ings, and employe letters to get work- ers to develop safe working habits. One of the company's most stringent rules was that an employe must re- port every injury no matter how slight
Bill Sandes was a packer. In this job he had to handle a lot of cartons and twine. Within a 15-month period he cut or bruised his fingers some 15 times. Each time he reported for first
1956
pany When this record cam tion
charged for a
to the nurs equired by
com rule ;
to the atten of management he was dis
ident proneness,.”
Bill grieved ind the 1Sé ame to arbitration. He argued
|. These were all minor injuries Reporting thes« njuries Was a company rul In other com pant uch m nial vould not come to management ittention
The company’s position
1. There is no clear, precise line of demarcation between a safe and unsafe employe Ihe decision, must rest upon management
». By having so many injuries, even though slight, this employe indi cated he was in apable of per forming his job satisfactorily.
3. The job itself can’t be blamed because other employes didn’t have to go to first aid anywhere near as Often as Sandes
4. An accident prone employe
might hurt himself seriously, so
we are taking a preventive step
n page 24
In bulld-up of a worn pump shell with AMS¢
welding time was cut 50%!
The perfect uniformity of AMSCO Tube R
smooth, trouble-free feed to the work. Note!
alloy compactly enciosed within the stee! tube
TUBE © RODS
... specially designed for
FASTER, EASIER semi-automatic
HARDFACING
Here’s a new, improved Tube Rod... specially Three types of Amsco Tube Rod are avail- designed and engineered for semi-automatic able for semi-automatic welding, in %” diam- hardfacing! It has proved its speed, quality of eters only:
weld and uniform deposit in actual use-tests. © S/A Manganese Steel—for all types of manga- In many cases, deposition rate has been in- nese steel build-up and repair applications. creased ap 200% over other types of semi- e S/A-53—a high chromium alloy for general- automatic rod. ; purpose hardfacing.
Amsco Tube Rod is easy to use...an inex- perienced man can handle it with practically no training! It cuts down operator-fatigue, thus increasing productivity and reducing welding costs.
Amsco Tube Rod is a perfectly symmetrical, steel-wire shell, with the various alloys firmly enclosed within the wire, for proper weld- deposit. The steel shell is work-hardened to provide a rod that will not deform or snarl during welding... that is simple to drive with For additional information and technical conventional! feed rollers. Also, the rod is data on Amsco Tube Rod, see your Amsco automatically lubricated, to insure constant and Welding Distributor. Or write to Amsco uninterrupted feeding to the work. Welding Department SA, Chicago Heights, IL
W -4
e §/A-33—for wear resistance in severely ab- rasive applications.
Amsco Tube Rod is ideally suited for use with the AMSCO MF Semi-Automatic Welder the most versatile and flexible welding ma- chine for all types of shop and field applica- tions. Or, by applying an inexpensive adapter, Amsco Tube Rod can be used with any semi- automatic machine.
Bulid-up of a dipper base is much easier and faster Hardfacing the side of a backhoe bucket with AMSCO
with AMSCO's method of tube-rod welding. Tube Rod. Note ease of use for vertical welding in tight
quarters.
Amsco Welding Products distributed in Canada by Canadian Liquid Air Ce., lid
AKRAS CO
+ Chicago eights, tf.
American Manganese Steel! Division
HER PLANTS IN: OENVER, LOS ANGELES, NEW ASGTLE, OL GAKLAN
Continued from page 21
What Arbitrator Carroll R. Daugher- ty Ruled: “The company, by its right to set job standards, also has a right to determine whether a worker is capable of physically performing a job. It is also within the bounds of managerial discretion to set up a line of demarcation between a safe and unsafe employe, provided it exercises its authority in a non-discriminatory fashion. The Arbitrator cannot prohib- it or modify the right of a company to discharge an employe if the manage- ment has determined the employe to be unsafe; i.ec., prone to accidents en dangering his welfare and/or that of other Grievance denied
own employes
IS DISCHARGE TOO SEVERE a penalty for sleeping on the job?
What Happened
Louis Hosler did not deny that he was sleeping. He was found in that condition by the plant manager who had to shake him vigorously to get Louis to wake up. When he was fired, Hosler put up a wide-awake defense:
1. No one in the company had ever
been fired for sleeping A man should be given “gradual discipline” not discharged right off, Nothing serious happened while he was asleep. These arguments didn’t catch the com- pany dozing. It said
1. Hosler was an engineer, and he
had to stay awake to check on the pressure of boilers. If he didn't do his job well, lives and property could be jeopardized. In a job like Hosler’s, sleeping is so serious that he should not be given a second chance
What Arbitrator Paul L. Styles Ruled
“A worker might be given a second chance if, while he slept, none of his assigned duties were neglected. While Hosler slept, his duties, which con
24
sisted largely of being awake, were neglected. Just as a bartender must be a sober man, and a judge an honest one, an engineer and watchman must be a wide-awake man. Discharge sus tained.”
CAN MANAGEMENT DEMOTE a worker and turn his duties over to a foreman?
What Happened:
The company maintained a small janitorial staff of five to seven em- ployes on the day shift and about the
same on the night shift. Each group
was supervised by a leadman who did
the same work as the other employes
but exercised some minor overseeing The leadman on each shift was a member of the union.
After the company had received a number of complaints about poor jan itor service, it determined to do some thing. Upon investigation, it found that the janitorial group had very little supervision. The maintenance fore man, who was supposed to have over all supervision, was too busy with other duties, thus leaving the leadman in control
ROCK PRODUCTS, November
1956
The company decided to reorg the janitorial service. It created job, “Custodian Foreman,” which outside the bargaining unit. In of the fact that the foreman was to take over active supervision, the job of leadman was eliminated and the in cumbents demoted to “janitor” with a pay cut from $1.50 an hour to $1.44.
The union put in a grievance. It admitted that management had a right to eliminate a job, but it couldn't as sign the duties to a supervisor. The new foremen, the union said, had taken over many of the functions of a leadman, and management had no right to do that.
The company argued
1. We didn’t eliminate a job a!
We created a new job of
todian foreman.”
The staff isn’t big enough to hav
a leadman and a foreman
The new foremen are not doing
the work of regular emplo What a Board of Arbitration, ! L. Warren, ruled encroachment on the job territory the union, no matter how well int tioned, would be a potential threat the union’s security. However, th termination of the kind and amo of supervision required to assur quate performance of a work for
chairman
clearly the function of manag Ihe leadmen spent only a very proportion of their time in supe sion. The new foremen spend al time in supervision. They lay out work, prepare instructions, keep ords and supplies, hire, disciplin discharge. None of these fun were performed by the leadme: cannot be said that the forem¢ were from duties fi carried out by leadmen. Grievar
created
nied.”
Ly A . a ees en
New, 900 cfrm
Here’s a 900 cfm portable compressor that is only 12 feet long—that has a 14'10” turning radius— that is ruppedly built of high-strength steel—yet weighs as much as 3700 pounds less than other 900 cfm portables.
The new Joy 900 cfm AIRVANE rotary tows and maneuvers like ordinary 600 ft. machines, yet packs enough punch to power three heavy wagon drills ... or seven light wagon drills... or ten hand-held drills.
KC VE AIRVANE FE
THERMAL BY-PASS—an oil circulating system that provides immediate lubrication and tem- perature control under all weather conditions.
SPLINE COUPLING—does away with a clutch for more efficient power transmission.
Consult 0 9 OY Eng MLO,
for AiR COMPRESSORS * ROCK DRILLS * WAGON DRALLS CORE DRILLS * BLAST HOLE DRALS PORTABLE HOISTS * FANS * BLOWERS + TUNNEL, QUARRY, MINE EQUIPMENT
ROCK PRODUCTS, November
S. WEIGHT. 11,500 U8 READY TO GO
i 1 Y -
Ears ary
If a 900 ft. portable is in your plans to push along a tough job, better look at the latest—then put a JOY on the job.
Write today for full information. Joy Manvu- facturing Company, Oliver Building, Pittsburgh 22, Pa. In Canada: Joy Manufacturing Company (Canada) Limited, Galt, Ontario.
Write for FREE Bulletin 129-27
CONSTRUCTION EQUIPMENT MANUFACTURERS — FOR OVER HALF A CENTURY |
Enter 1011 on Reader Card 1956
uwe're getting
300 TONS PER HOUR of 3/4” GRAVEL
with 50% to 70% CRUSH— 365 TONS PER HOUR of 1” GRAVEL
with our
says A.H SCHROBER, Schrober Construction Co.,
“yr al
900,000 TONS OF GRAVEL HAVE GONE THROUGH THIS CRUSHER
... and there's still plenty of life left in the jaws! It’s no wonder A. H. (Tony) Schrober says ““There’s nothing like the jaw life of our Twin Jaw Primary. We turned the jaws at 525,000 tons and when this picture was taken, over 900,000 tons had gone through. The ribs still protruding indicate there’s still a lot of service left in these jaws, and we expect to go over a million tons easily before replacement.”
Production is another reason Tony Schrober is well pleased with his Cedarapids equipment. This Unitized Plant is turning out 300 tons per hour of %" gravel, with 50% to 70% crush, and 365 tons per hour of 1° gravel. That's a good reason why he has taken delivery on another Cedarapids plant.
CEDARAPIDS UNITIZED PLANT”
Loyal, Wisconsin am,
When there’s a high percentage of oversize in the pit, and material is abrasive —leave it to A. H. Schrober to solve the problem profit- ably. He uses a Cedarapids Twin Jaw Primary Unit to handle the 50% to 70% crushing and get increased capacity ...and to sharply re- duce abrasive wear on the jaws. For secondary reduction and gradation he uses a Cedarapids 4024 Roll Crusher Secondary. It’s the perfect combination for the performance Mr. Schrober likes ... output of 2700 to 3300 tons per day in tough crushing conditions, steady operations day after day, and low maintenance costs.
Your Cedarapids distributor can help you choose the aggregate producing or bitumi- nous mixing plant which will meet your require- ments for capacity, specifications and low cost.
oh 7: Wryryrmatert i came yyy
CEDAR RAPIDS, IOWA, U.S.A.
Enter 1012 on Reader Card
ROCK PRODUCTS, November, 1956
William H. Wilson
Heads Virginia-Carolina
WILLIAM H. WILSON has named president of the Virginia-Caro lina Chemical Corp., Richmond, Va He succeeds William C. Franklin, who has been serving as acting president since a change in Management control two months ago. Mr. Franklin be- comes board chairman replacing for mer Gov. John S. Battle who will continue to serve as a member of the board of directors. A native of Saginaw, Mich., and a graduate of the University of Michigan, Ann Arbor Mich., Mr. Wilson has been executive vice-president of the Standard Fruit and Steamship Co
been
Production Superintendent
Dr. J. D. CLary has been appointed production superintendent of the Flor ida phosphate division of the Davison
Chemical Co., Baltimore, Md. For- merly assistant works manager at Cur tis Bay, Baltimore, he has been asso ciated with the firm since 1951. Wil liam R. Fort is manager of the phos- phate rock division.
Rejoins Concrete Firm
Joe J. SHADDEN has returned to ac tive participation in the operation and management of Hulsey Concrete Prod- ucts, Inc., Chattanooga, Tenn. Vice- president and a director of the com pany since 1945, he has been living in Florida for the past few years. He is a native of Chattanooga and a gradu ate of the University of Chattanooga
PEOPLE IN THE NEWS
District Engineer
Ectis G. WIitttiams, formerly re search engineer with the Kentucky Department of Highways, has been ap pointed district engineer in the Louis ville, Ky., office of The Asphalt In stitute, College Park, Md. Fred N Finn, district engineer in the Sacra- mento, Calif., office, has been assigned as research engineer on the AASHO test road project in Illinois
Production Manager
rl. L. PLake has been appointed production manager for the Transit Mix Concrete and Foundation Co Beaumont, Texas. Formerly superintendent for the Lone Star Con struction Co., Mr. Plake attended La mar College of Beaumont and Mc Neese College of Lake Charles, Texas
general
Basalt Assistant Manager JaMeES TosBIN, plant manager at the Vallejo, Calif., plant of Basalt Rock Co., Napa, Calif., has been promoted to assistant manager of the structural concrete products division. Harold Price is manager of the division. Born in Vallejo, Calif., Mr. Tobin is a graduate of Healds Engineering Col lege. He has been associated with the
company for the past six years
Executive Vice-President
WILLIAM SMITH ZIEGLER has been appointed executive vice-president of Inland Cement Co., Montreal, Canada He was formerly assistant vice-presi dent of the Canadian National Rail ways, Montreal
General Sales Manager CLARENCE | THORFINNSON — has been named general sales manager of Baukol-Noona, Inc., Grand Forks N.D., producers of lightweight aggre gates. Associated with the firm for the past six years, Mr. Thorfinnson will serve North Dakota and wesiern Min
nesota.
Becomes Partner
Lioyp L. SHANK has purchased a half-interest in the Maurer Cement Products Co., Goshen, Ind ing to an announcement by
accord
DeVon
ROCK PRODUCTS, November, 1956
Maurer, who has operated the con
crete burial vault plant since 1932 Mr. Shank has been M:
sistant for the past three year The
Maurer's as
firm will continue t perate under the name of the Maurer Cement Prod
ucts Co
Leslie S$. Veltz
Director of Safety
Lestie S. Vortz has been appoint ed director of safety for Consumers Co., Chicago, Ill William 1 Jagen ni tant Mi
native ol
has been mamed Voltz in engines Chicago, has lon ( , operation ifety
ociated with mining controls and mine rescue work. He ftormerly served in thi connection with Pea body Coal Co. and fi Coal Corp. In his new position Mr Voltz will inspect all mechanical op pil and
inklin County
local
erations at quarri
yards, instruct superintendent fore men and plant inagers in accident ind install fety
prevention methods
and devices where needed
District Manager
FRANK J. NUNAN has been appoint ed Virginia district manager for the United States Gypsum Co iil., with headquarter n Kichmond Va. He was formerly a salesman in the Philadelphia office. A. \ research man
Chicago
Abnee has been named field ager in the market ré irch depart
ment
in place of wasteful and uncertain crankcase-oil
changing based upon mileage or hours in service, many operators of heavy-duty construction equip- ment now use a better guide that saves them both time and money.
Now you can test used oil
in minutes
I, HAS COME as something of a surprise to some maintenance men to discover that they have been throwing away hundreds of gallons of still-good oil . . . year after year. Conversely, it is quite a jolt to realize that a costly engine-repair job could have been pre- vented by an on-the-spot analysis that would have shown up the condition . . . in minutes!
The recommendations for oil changes issued by engine makers have always been computed on ‘“‘averages’’ for the various classes of vehicle service. And like the ‘average’ man on the insurance chart, the average vehicle doesn’t exist in the actual fleet. For example, two bulldozers of the same make and model, operat- ing on the same job, can have quite different patterns of oil economy and engine condition. Obviously no one set of rules can apply ideally to all units. And fortunately there is no longer any need for such generalization.
From a couple of drops of used oil, the Shell ““ADC* Oilprint Analysis’ provides a reliable check of oil condition, in minutes. It is very simple, and with a
The simple test setup: sample bottles, a wire rod, a bottle of “indicator,"’ and the permanent record card.
little practice, it tells you a lot about that oil and the engine that uses it.
What a drop of used oil shows: You place a drop of used oil on a piece of special filter paper supplied by Shell . . . let it stand a minute or two. You will then be able to see the following:
Water dilution: Even a tiny amount of water shows up . and that means not only that your oil is losing its ability to protect engine parts, but it also shows whether the water represents a normal amount of condensation or something more serious, such as an actual leakage of coolant from a faulty jacket
Dispersancy/detergency: The same oil drop will give you a picture of how well the special additives in the oil are doing their job . . . whether or not the contaminants are being held in suspension where they do least harm . . . whether the cleansing and dispersing actions are adequate . . . whether the oil is stil! good.
Adulteration: The color of the oil spot will show whether too much contamination is occurring and will very often point up the cause, indicating a check on
This single, on-the-spot sample reveals many things about an engine,
28 ROCK PRODUCTS, November, 1956
injectors, nozzles, oil and air filters of diesels, or on plugs, carburetors and filters of gasoline engines.
All of the above can be learned from the single drop of oil . . . in an amazingly short time.
Alkalinity: Engine wear and engine deposits in- crease as the oil becomes acidic in nature due to contamination from combustion products. A special indicating fluid, developed in Shell Laboratories, tells at a glance whether oil is alkaline and still usable, or acid and how much.
Operators who keep an ADC Oilprint Analysis record of each vehicle generally find that the crankcase oil stands up longer than they had figured . . . a distinct saving in lubrication cost. At the same time, there is a running check on each engine that often detects im- pending trouble before its correction becomes costly. In this respect, the Shell ADC Oilprint Analysis qualifies definitely as one of the valuable recent tools of pre- ventive maintenance.
If you are concerned with extending the service of crankcase oil, and with avoiding the risk of using oils loaded with contaminants, we suggest that you have one of the Shell service engineers demonstrate ADC Oilprint Analysis for you.
“Trademark
how easily the test is made
A fleet
one phase
of oil
Photo shows an oil-spot test card
in the visual life record of a charge
“indicator show widity in-
The
atantly
Shell
If spot turns red, oil is no longer fit
to use, should be changed quick!
SHELL OIL COMPANY
50 WEST SOTH STREET, NEW YORK 20, NEW YORK 100 BUSH STREET, SAN FRANCISCO 6, CALIFORNIA
ROCK PRODUCTS, November
Enter 1014 on Reader Card 1956
29
Left to right: Wm. Wallace Mein, Jr., Al Maier, A. L. Sundell and Mel J. London
Calaveras Veterans Retire Wma. WaLttace Mein, Jp dent of Calaveras Cement Co., San Francisco, Calif., and Mel J vice-president, recently presented gold watches to Al Maier and A. L. Sun dell, sales representatives, upon their retirement from the firm. Mr. Maier joined Calaveras in 1934 as salesman
presi
London
in the San Jose territory, transferring in 1941 to Oakland. Mr. Sundell be came associated with the company in 1935, serving as north coast sales rep resentative except for the four years he was assigned to duties at the San Andreas plant
Sales Manager
KENNETH I appointed sales manager of the Ala Alabaster Ala operated by Scott Ham
HAMMOND has been baster Lime Co owned and George L. Scott, Sr., George I Jr., and Albert L. Scott, Mr mond was secretary-treasurer of the Keystone Lime Works, Inc., Keystone Ala., for many years prior to recent Southern Cement Co Ala., now a branch of
which is
purchase by Birmingham American-Marietta Co., Mr. Hammond is a
life-time director and member of the executive committee of the National
( hicago il past-president,
Lime Association
C.M.A. Committee Chairmen Pere Mutu, Orco Block Co., Hol lywood, Calif., newly elected president of the Concrete Masonry Association, succeeding Lyman Chaffee, O'Kelley- Eccles Co., has appointed the follow- ing committee chairmen: Jay Lyon, General Concrete Products Co., Van Nuys, public relations committee Lyman Chaffee, O'Kelley-Eccles Co., Baldwin Park, technical committee E. P. Ripley, General Concrete Pro ducts Co., educational and employe relations committees; W. A. Chaffee
30
O’Kelley-Eccles Co., union negotiat ing committee; and Arvid Orco Block Co., Stanton, membership
committee
Johnson
Association President
J. Forscut, Altoona, Penn., has been elected president of the Penn sylvania Concrete Burial Vault Asso ciation. He succeeds Irvin | Ringtown. Other Willard, Pulaski, vice-president; John I Kizer, Jr.. Scranton treasurer; Quinton Fike, Cumberland Md.; William Schultz, Nescopeck; and Wilbur R. Mauger, Kennett Square directors
Brouse officers are James
secretary
Joins Goff-Kirby
RICHARD I pointed sales manager of the Goff Kirby Co., Cleveland, Ohio ing to an announcement by E. M Harper, president. A graduate of Case Institute of Technology, Cleveland with an M.S. degree in civil engineer ing, Mr. Garman was formerly associ ated with Metropolitan Brick, Inc Canton, and the New York Coal Sales Co., Columbus
GARMAN has been ap
accord
Dragon Appointments
WILLIAM T. BARRON has been ap pointed superintendent at the North ampton, Penn., plant of Dragon Ce ment Co., Inc., New York, N.Y Frank J. Anderson has been named assistant plant manager; Eugene Mil ham, chief chemist; and Thomas J Hynes, construction engineer
On P.C. A. Board
GorRDON TONGUE, president, North western Portland Cement Co., Seattle Wash., has been elected to the board of directors of the Portland Cement Association, Chicago, Ill
ROCK PRODUCTS, November
1956
Assistant Sales Manager WILLIAM W. BURNHAM ha appointed assistant sales manager of the Philadelphia, Penn of Universal Atlas Cement Co., New York, N. Y. A native of Kansas City Mo., Mr. Burnham attended Stat Teachers College, Warrensburg, Mo and University of Notre Dame. He |
sales territory
been associated with the ompan since 1947
Zonolite District Manager Emrys L. WILtiamMs has be«
pointed district manager of th
lite Co., Chicago, IIL, miner
manufacturers of vermiculit
have charge of sales in Michig
northern Ohio. Mr. William
the firm in 1950 and has serv:
chitectural representative in ¢
and Detroit. He holds a B.S
from the Light Construction Scho
the University of Wisconsin, Mad
Wis. Kenneth A. Oretgren, Rober
Asher and Guiles I Maxwel Jr
have been named sales representat
M
in southern Illinois, central!
and Birmingham, Ala., resp:
Alpha Sales Manager
H. EUGENE BROWN has pointed southern Alpha Portland Cement Co., | to succeed Charles P. P
sales manage
Penn who has retired. Mr company in 1924 and served
Brown join representative and assistant manager in the Ohio, West \ Kentucky territory prior to his pres appointment. Mr. Postelle, form with the Phoenix Portland Cen Co., had served in this position 1928 at which time Alpha pur the company
General Traffic Manager
R. A. Morin has been appoint general traffic States Gypsum Co., merly general ager, he succeeds R. ( has been named charge of traffic
manager of
Chicago, I trafh Berre
vice-president
assistant
Association Speaker
Eart W. PeTerRsoN, Ideal Cement
Stone Co., Omaha, Nebr., and presi dent of the National Concrete Mason ry Association, was principal speaker at the recent meeting of the Kansas Concrete Masonry Association. B. | Park, general sales manager, Buildex Inc., Ottawa, Kan., was host for Build ex, Inc., and James C. Hamm Clay Center Concrete and Sand Cx (
THIS OPERATOR...
at WENDLING ROCK & LIME QUARRIES
has a big advantage
with LORAIN 2-Lever, “JOY-STICK, Metered-Air” Control
Working at Moscow, Iowa, this l-yd. Lorain-5O Shovel is digging and loading up to 1700 yds. of limestone per day, working against a 20-ft. face.
The ‘‘face’’ you can’t see too well is that of the operator. But he’s happy with the operating ease of the new Lorain 2-lever, ‘‘Joy-Stick, Metered-Air’’ Controls that take away the time-consuming work and fatigue of manipulating a whole bank of manual levers for clutch operations. Yet, he has normal full ‘‘feel’’ of the clutches at all times. The boss is happy, too, with the production step-up and the way Lorain air-operation performs in tough digging. This is Wendling’s second Lorain.
Investigate this revolutionary new method of shovel con- trol. It is a feature you'll want on your next shovel. Your Thew-Lorain Distributor has the facts! 2 LEVERS DO ALL THIS... LEFT LEVER controls (J y right
or left, (. boom ra or combinations of 1 and
RIGHT LEVER contro: l) main hoist, (2) se ndary hoist hovel crowd, (4 hovel retract lam holding, (6) dragline or hoe drag-in By “quartering” the leve mbina tions of the above operatio: in be obtained
THE THEW SHOVEL CO. THE VY LORAIN, CGHIO Enter 1015 on Reader Card ROCK PRODUCTS, November, 1956 4]
@ Converting the raw building products tation costs low. And because coal can
provided by Nature into the rugged and be stored anywhere, the need for expen-
beautiful works of man requires both sive facilities is eliminated.
vision and skill. It also requires fuel We will be glad to advise you on
the unseen factor behind every towering the right kind of coal for your specific
structure. Selecting the right fuel need, show you where to find it, and
is important. how to burn it. The modern efficiency, Along the Baltimore & Ohio are economy, and cleanliness of Bituminous
vast deposits of bituminous coal with will amaze you. Ask our man!
structure and volatility ideal for producing
cement, lime, and brick. Modern mecha-
nization and the easy accessibility of the
mines keeps production and transpor-
BITUMINOUS COALS FOR EVERY PURPOSE
BALTIMORE 2 OHIO RAILROAL
® Constantly doing th >. — better! Enter 1016 on Reader Card 32 ROCK PRODUCTS, November, 1956
Center, Kan., presided. Mr. Hammel is president of the Kansas Concrete Masonry Association.
Emil J. Bonkoff
Joins Engineering Firm
Emit J. BoNKorFF has joined the consulting mining engineering firm of Larry F. Labow, Toronto, Canada He was formerly with the Department of Trade and Commerce, Ottawa, where he was responsible for the de- velopment and promotion of trade in industrial minerals and products. Mr Bonkoff received his degree in geology from McMaster University, Hamilton, Canada
Sales Manager
JoserH A. Doo.ey has been elected sales manager of New York Trap Rock Corp., New York, N.Y., according to an announcement by Wilson P. Foss, Jr., chairman of the board. Mr. Doo ley, who joined the company in 1947, has been assistant sales manager since 1953. Born in Brooklyn, he attended the University of Dayton, Ohio. His father, Joseph C. Dooley, was vice president in charge of sales for New York Trap Rock Corp. for many years before his death in 1949.
St. Lawrence Sales Manager
James D. Tweepy has been appoint- ed Ontario sales manager for St. Lawr- ence Cement Co., Clarkson, Ontario, Canada
Rotary Club President
WALTER C. COUPLAND, secretary- treasurer of the Argo Block Co., Ltd., Cooksville, Ontario, Canada, has been elected president of the Cooksville Rotary Club. A former president of
the National Concrete Products As sociation in Canada, Mr. Coupland is the only Canadian director of the Na tional Concrete Masonry Association, Chicago, Ill.
Assistant Sales Manager
CHARLES E. WATSON has been ap- pointed assistant district sales manager in Seattle, Wash., for the Kaiser Gyp- sum Co., Oakland, Calif. Formerly a special salesman for Kaiser in south- ern California, Mr. Watson had seven years’ experience in the building ma terials field before joining the company in 1952 as a territory salesman
Hiram College Trustee
FRANK B. WARREN, president and director of The Bessemer Limestone and Cement Co., Youngstown, Ohio, has been elected a trustee of Hiram College, Hiram, Ohio. A graduate of the University of Illinois, Urbana, IIL., with a B.S. degree in civil engineering, Mr. Warren is also a director of the Mahoning National Bank and the Home Savings and Loan Co. in Youngs- town
Named Vice-President
CuHaRLes Z. McGINiey has been named vice-president of Corson Con crete Co., subsidiary of G. & W. H Corson, Inc., Plymouth Meeting, Penn
OBITUARIES
STuaRT H. RALPH, vice president and director of The Flintkote Co New York, N.Y., died September 6 Born in Oil City Boston
at the age of 63
Penn., Mr. Ralph University. He joined the company in 1920 as assistant to the general sales manager, later serving as eastern sales manager until he became general sales manager in 1928. He was elected vice president in charge of building mate rial sales in 1933 and became a direc tor in 1944. Mr. Ralph was past presi dent of the Asbestos-Cement Products Association, Insulation Board Institute and Insulating Siding Association
attended
CHESTER NELSON ReITze, retired president of Superior Portland Ce ment, Inc., Seattle, Wash., died Aug ust 25 after a short illness. He was 73 years old. Born in Seattle, Mr. Reitze was graduated from Cornell Univer sity, Ithaca, N.Y., as a civil engineer He started his business career as a partner in the engineering firm of Reitze, Storey & Duffy. He was Pa- cific Coast manager for the Portland
ROCK PRODUCTS, November, 1956
Cement Association fron IYIS to 1925, when he joined Superior Port land Cement, Inc., as an engineer. He became president in 1947 and retired in 1955, but remained the board of directors
Harvey M. HAaAwnaw founder and president of Hanawalt nd and gravel and ready-mixed cor te firm of Pomona, Calif., di i t 31 He was 76 vears of ag Johns town, Penn., Mr. Hanawalt moved to California in 1902. He and his broth er, Samuel E. Hanawalt, who died in 1947, started the sand and ivel busi ness in 1922 and subsequently added the ready-mixed concrete plant. His
Robert M Hanawalt who 1s
sons, vice-president and general manage! and N. Ward Hanawalt, who is con struction superintendent, will carry on the business
Epwarp § (sUBER POR retired general traffic manager of the Lehigh Portland Cement C<« Allentown Penn., died August He was 78 years old and had been ill fi the past year. Born in Mt. Pl Township Adams County, Penn., M tor attended St. Loui University He
joined the compan
CGsuberna
¥ as traffic
manager in Chicago ippoint ed general traffic manag in Allen town in 1937. He ret 1948 Jesse G. Ray Independ ent Limestone Co died September 6. He wa
age A native of Lawren Ind., Mr. Ray had been in the lime
business for 1
pre lent Bloomington, Ind years of
County
stone and president of the f He was a membe Limestone Institut
WILLIAM S. Bry 1 superin tendent of the Bainbrid Penn., quat ry of the J. EF. Baker ¢ Y k, Penn died August 13 follow illness of several month He Nid ears old and had been associated with the firm for more than 40 y«
Lewis D. AY f uperin tendent of the Claremont, Calif., plant of Consolidated Rock Products Co Los Angeles, Calif died 1 following a long illn
september
years old
CLEMENT J, PIERSO the Pierson Brother Sand waukee, Wis., died Sept lowing a short illn H old
Grorce M. Dux d engineer for the Nugent Sand Louisville, Ky.. died August 13 at the age of 81
Tried one, bought five...
Lambert Brothers quarries report Michigan Model 175A ‘‘Well worth your test’’
Next time you're in the market for a Tractor Shovel, we'd like permission to demonstrate a Michigan at our ex- pense in your pit. We think the results will convince you that Michigan is your “best buy” just like it convinced Lambert Brothers, Knoxville, Tennes- see, one of whose five Michigans is shown above.
Lambert, one of the largest crushed stone producers in the country, used to load trucks at five of their Tennessee and Georgia quarries with crawler- shovels and portable conveyors. As road work increased demands for their 44"
to 2\4"” stone, these methods became too slow... too expensive. Partner Walter Lambert and his Knoxville quarry superintend- ent, Lawson Tice, carefully studied all the newest methods . . . then called for a Tractor Shovel demonstration. Michi- gan won, hands down! A 244 yard Model 175A outproduced the next best loader, 21%-to-1! Its efficient power train and smooth-operating bucket heaped loose stockpiled stone in one quick pass . . . the other machines had to work in and out several times to get a similar load.
and, as labor costs soared,
Loads 100 tons hourly
That happened about a year day, Lambert has fwe Michiga: handle all truck-loading at « affiliated quarries in Knoxvi ville, Rockwood and Maryvill nessee, and in Kennesaw, Their Knoxville unit, picture averages 800 tons per 8-hour « 27 mph speed hustles it 450 fe « between the nine stockpiles as 1
. also enables it to quick such rush “odd jobs” as cleanin;
eee |
il 4 uf’?
\
ARATE BP TO
_ _—s
a ee
Lita
ad
micwican
age from the hopper and towing the To load 5 or 6 yard truck wi! air compressor.
If this kind of high-speed cost- cutting looks like it can help you, may height is especially valuable. we suggest you re-analyze your needs soon! And when you do, take it from Mr. Lambert: “We tried ‘em all,” he
says, “and we know that Michigan
es oe
Tractor Shovels are best for quarries! There's a size and drive to fit your needs... 1 to 2% cubic yards.
CLARK EQUIPMENT COMPANY Construction Machinery Division 2481 Pipestone Road
Benton Harbor 31, Michigan
Michigan is a registered trade mark of
CLARK
EQUIPMENT
stone takes the Michigan 175A only 3 pas For loading sideboarded 16 to 18 yard fon trucks, Mich in’s I) foot dumge
f
£2
9
The
best Tract
ver drove
through better lubrication
FULL POWER, dependable performance from In hydraulic mechanisms, Texaco Regal Oil REO a cleaner, better-lubricated engine — these are the prevents rust, sludge and foam, assures smoother benefits enjoyed by all who use world-famous operation and low maintenance costs. Texaco Ursa Oil Heavy Duty. For wire rope and open gear lubrication, us: Texaco Ursa Oil Heavy Duty will safeguard vital Texaco Crater or easily applied Texaco Crater X parts against wear and corrosion, prevent harmful Fluid, They keep rope strong longer, greatly extend deposits, keep rings and valves free, assuring full gear life. compression and complete combustion. You'll get Effective lubrication can step up efficiency in more power with less fuel over longer periods every phase of your operation. Ask a Texaco Lubri between overhauls. cation Engineer for full details. Just call the nearest Texaco Ursa Oil Heavy Duty is one of a complete of the more than 2,000 Texaco Distributing Plants line of Texaco Ursa Oils to meet the requirements in the 48 States, or write The Texas Company, 135 of all diesel and heavy duty gasoline engines. East 42nd Street, New York 17, N. Y.
PC THOM ie
FOR ALL CONTRACTORS’ EQUIPMENT
Enter 1017 on Reader Card 36 ROCK PRODUCTS, November, 1956
INDUSTRY
Cover Picture THis MontH’s Cover ILLUSTRA- TION is a scene in the Johns-Manville quarry at Lompoc, Calif., showing 4% cu. yd. P & H electric shovel loading diato- mite into a 2242- cu. yd. Euclid truck. This is believed to be the largest and purest diatomite deposit in the world. The raw material is pro cessed in a new plant into synthetic silicates. The silicates are manufac- tured directly from processed diato- mite reacted with lime under high temperatures and pressures. The quarry has been in operation since 1928 Finished products, called Micro-Cel, are used as dry cleaning sweeteners, inert absorbents, bulking agents, and extenders in paint, rubber, paper, in secticides, and fertilizers.
New Peerless Plant Open
PEERLESS CEMENT Corp., Detroit, Mich., has begun production at its new plant on the main channel of the River Rouge, near Detroit. The $7 million plant has an annual capacity of 1,250,000 bbl., which, combined with the output of the two other Peer- less plants, will boost the company’s production to 6,500,000 bbl. per year
An 11'%- x 425-ft. rotary kiln is the main piece of automatic and semi- automatic equipment at the plant, which is almost a pushbutton opera- tion, requiring a minimum of labor In addition to portland cement, the plant will produce blast furnace slag portland cement, according to Walter C. Russell, president.
Construction activity at the Port Huron plant of Peerless Cement Corp involved the installation of electronic dust-collecting equipment.
Slag Firm In Merger
BIRMINGHAM SLAG Co., Birming- ham, Ala., and Vulcan Detinning Co., Sewaren, N.J., are merging, accord- ing to an announcement by C. W. Ireland, president, Birmingham Slag,
NEWS
and Alfred C. Buttfield, president of Vulcan.
[he ownership of two other allied companies in which Birmingham Slag now has an interest, Stockbridge Stone Co, and Southern CEN-VI-RO Pipe Corp., will be acquired through an exchange of stock.
Lambert Bros., Inc., Knoxville, Tenn., co-owner of Stockbridge Stone Co. with Birmingham Slag, will re ceive 87,000 shares of 5 percent cu mulative preferred stock of the new company and 63,000 common shares
Each Vulcan common shareholder will receive 1% shares of new com mon stock and one share of the new preferred for each share held. Each of Birmingham Slag’s 2,059,040 com mon shares will receive 0.98 shares of the new common stock
Permanente’s New Cement Plant
PERMANENTE CEMENT Co., Oak land, Calif., is completing construction of its cement plant near Victorville, Calif., which will serve the southern California market. The $13 million dollar plant will have an annual ca pacity of 2,500,000 bbl., and will operate wet
Principal equipment at the plant are two F. L. Smidth & Co. gas-fired rotary kilns. The 12- x 448-ft. kilns are equipped with 8- x 44-ft. Fuller coolers, Cottrell electrical precipitators and Buell dust collectors.
Chemical Lime Builds Plant Portland n of its plant
CHEMICAL LIME Co Ore., is nearing complet near Baker, Ore begin by the first of the year, The { the plant
15.000 tons of chemical grade
, and production may
annual initial capacit will be lime
One kiln has been installed and a second soon will be added. The plant will draw upon a deposit indicated to contain more than 30,000,000 tons of high grade limestone, high in calcium and low in silica, iron and rous. A dry ice plant included in the project will utilize CO
Ihe plant, located from the will have { duction of
phospho
quarry more than 200-t.p.! f limestone Stockpiling faciliti
tunnels have been
laiming d to pro vide for storage of 000 tons of lime
According to Anth Branden thaler of Chemical Robert G. Vervaeke will b Cl manager of the Baker plant. } icke was formerly associated S. Gyp sum Co. and with Gladd McBean Co
Columbia Expansion PITTSBURGH PLATE G Co.'s Co lumbia Cement plant, East Fultonham Ohio, has completed an 1idition Of a
expansion program including the 12- x 450-ft. kiln and a ngle-com
partment ball mill. Electronically-op ‘1
Scale model of Permanente’s new southern California :
ROCK PRODUCTS, November, 1956
Lined ... and relined with Lorain...
Primary clinker mill grinds 37,873,000 bbls.
of feed efficiently and economically
At Hudson, New York, the Universal Atlas Cement Company has been using USS Lorain Rolled Steel Plate Linings in its grinding mills since 1938. One 10’ - 6” x 12’ Preliminator alone has ground 37,873,000 barrels of clinker up to February 13, 1956, consuming only two sets of linings and lift bars.
The first lining in this mill was made of 2” liner plates and lift bars, Section M-3714, designed to permit replacement of bars during life of the lining. In grind ing the 38 million barrels of clinker, one lining and one set of renewal bars were completely worn out. But despite the tremendous tonnage processed, the second lining installed was still in serviceable condition when the mill went down for general repairs in February.
HEAVIER-DUTY LINING—The performance of the orig- inal Lorain linings was so impressive that management at Universal Atlas decided to install the latest type Lorain lining with deep recessed liner plates and extra- heavy lift bars, Section M-4497, to further increase the mill’s grinding efficiency and to eliminate the need for replacing lift bars. The new type lining was installed during the repair period in February so production would not be interrupted during the peak season this summer. Frankly, no shutdown due to lining problems
This 10’-6” = 12° Preliminateor mill in Uni- versal Atlas Cement’s Hudson, New York, plant hos ground 37,873,000 bbls. of clinker at a rate of 360 bbis. per hour
The specially designed bolts will hold the Lorain Lining snug and tight for the life of the lining without fear of breaking. Lorain Linings are made of tough, rolled steel that is tailor-made to accurate shapes.
is expected for the next several years.
LONGER LIFE... CONSTANT LIFT—USS Lorain Rolled Plate Linings are made of tough, rolled steel that mea longer grinding life. Lift bars are rolled alloy ste heat treated to obtain a hardness differential that wi maintain lift height throughout life of the lining providing maximum grinding efficiency. Each Lorai: Lining is tailor-made to fit a particular mil linings fit snugly—shell wash is eliminated. Mr. A. | Glasspool, Maintenance Supervisor at Hudson, said “Lorain Linings are designed right and they fit tight Each piece was properly marked, so we had no troubl: with installation.”
These heavy-duty linings installed by Universal
Atlas will provide effective grinding action without fear of broken bolts, cracked plates or bars, and will continue to perform efficiently until the plates wea paper-thin. WE'RE GLAD TO HELP—If you are not aware of th: merits of USS Lorain Rolled Plate Linings and ar not using them—if you are experiencing lining difficul ties of any nature, we will be glad to have a sales rep resentative call on you. Just write to: United Stat Steel, 525 William Penn Place, Pittsburgh 30, Pa
Although there was still some life left in the old lining, management decided to in stall the heaviest-duty Lorain Rolled Plate Lining for even greater grinding efficiency and to assure continuous operation for several years to come.
U
“#8 qa +
ge i
if €s - . 7 0 ua x
he
These new, heavy-duty lift bars, Section M-4497, and 2-inch-thick liner plates are expected to increase mill efficiency. This lining will retain lift for millions of tons. USS Lorain Rolled Plate Lining successfully grinds until plates are worn paper-thin. USS Lorain-designed special man holes and covers were also an unusual feature of this installation.
UNITED STATES STEEL CORPORATION, PITTSBURGH + COLUMBIA GENEVA STEEL DIVISION. SAN FRANCISCO TEWNESSEE COAL & IROM DIVISION, FAIRFIELD, ALA
WITEO STATES TEE tsror Omran’ ate ron
USS LORAIN ROLLED PLATE LININGS and USS GRINDING BALLS
N V 2a STATE S ST EGS
I, i Z Evtry
UNDER CONTROL!
FROM TIMBERLANDS and paper mills to printing and sewing, every step in the pro- duction of Raymond Multiwalls is under the complete control of a wholly integrated or- ganization.
Tailor-made from papers adapted to every need, including our own asphalt laminated, creped kraft, wet-strength, waterproof, col- ored kraft and many other laminates.
With the assurance of getting what you want
when you want it.
RAYMOND BAG CORPORATION
Division of nl PAPER MFG. COMPANY “ Middletown, Ohio « Richmond, Va.
MULTIWALLS
Enter 1013 on Reader Card 40 ROCK PRODUCTS, November, 1956
ee
—
|
erated, automatic proportioning feed is a feature of the closed-circuit grind- ing mill, which is powered by a 1250- hp. motor. The East Fultonham opera- tion is changing from open pit to un- derground mining.
Portland Cement Production
THE PORTLAND CEMENT INDUSTRY produced 28,771,000 bbl. of finished cement during June, 1956, as reported by the Bureau of Mines. This was an increase of 8 percent over June, 1955. Mill shipments totaled 31,996,000 bbl., an increase of 2 percent, compared with June, 1955, while stocks on hand were 22,679,000 bbl., 20 percent more than on the same date a year ago Clinker production during June, 1956, amounted to 27,053,000 bbl., an in- crease of 8 percent from the June, 1955 figure. The output of finished ce- ment came from 158 plants in 37 states and Puerto Rico. During the same period of 1955, 26,762,000 bbl. of finished cement were produced
Enlarge Asbestos Fiber Mill
JOHNS-MANVILLE Corp., New York, N.Y., will expand the new asbestos fiber mill at Asbestos, Que., Can., of Canadian Johns-Manville Co. The ex- tension will add 75,000 sq. ft. of mill- ing floor space as well as provide equipment for four additional primary milling lines. The present capacity of the mill, completed last spring, is 625,- 0OO tons per year.
Another Johns-Manville announce- ment concerns the building of a Tran- site asbestos-cement pipe plant in Den- ison, Texas, the seventh plant to be operated by the company in the United States. Occupying 350,000-sq ft., the plant will probably reach com pletion by the end of 1957
Form New Mexico Cement Co.
New Mexico PorRTLAND CEMENT Co., Las Vegas, N.M., has been formed and has taken over an option on 1100 acres of limestone deposits, with the intention of building an $8 million cement plant in Gallinas Can- yon, near Las Vegas. Preliminary en- gineering will be handled under direc- tion of Kent B. Diehl, president of Texas Portland Cement Co., Orange, Tex.
If engineering shows the venture is warranted, plans are to build a plant capable of turning out 800,000 bbl of cement per year, minimum. Head- ing the new firm as president is Elmer Kaemper, Las Vegas; Russ Stephens, Las Vegas, is vice-president; and M E. Noble, Las Vegas, is secretary.
Flintkote Buys U. S. Lime, Expands In Other Fields
THE FLINTKOTE Co., East Ruther- ford, N.J., announced its entry into the lime industry by the acquisition of United States Lime Products Corp., Los Angeles, Calif. The acquisition has been arranged by the purchase of 98 percent of the stock of the corpora tion for eash. Minority stockholders will be offered the opportunity of sell-
ing their shares on a like basis
Recent purchases bring to three the number of major acquisitions made by Flintkote in 1956. Earlier, Flintkote bought the Insulrock Co., Linden, N.J., manufacturer of a fire-resistant acoustical building material. In this area, Flintkote has recently announced
plans for erection of a $1 million plant
in North Judson, Ind
November 12-19, 1956—
American Concrete Pres- sure Pipe Association, 8th Annual Convention, Cas- tle Harbour Hotel, Tuck- er’s Town, Bermuda.
November 14-16, 1956— Southeastern Concrete Masonry Association, An- nual Meeting, Eden Roc Hotel, Miami Beach, Fla.
November 26-27, 1956—
Wire Reinforcement In- stitute, Inc., Fall Meeting, Jung Hotel, New Orleans, La.
January 15-17, 1957—
National Crushed Stone Association, 40th Annual Convention, American Ho- tel, Miami Beach, Fla.
January 16-17, 1957—
Wisconsin Concrete Products Association, 36th Annual Convention, Plankinton Hotel, Milwau- kee, Wis.
January 22-23, 1957—
National Agricultural Limestone Institute, 12th Annual Convention, Stat- ler Hotel, Washington, &. ¢.
January 24, 1957— National Crushed Lime-
ROCK PRODUCTS, November
Coming Conventions
stone Institute, Annual Convention, Statler Hotel, Washington, D. C.
January 28-
February 2, 1957 American Road Build-
ers’ Association, Conven-
tion and Road Show, Na-
tional Amphitheater, Chi-
cago, Ill.
January 31-February 2,
1957—
National Bituminous Concrete Association, 2nd Annual Convention, Con- rad Hilton Hotel, Chicago, Hl.
February 11-14, 1957—
National Sand and Gravel Association, 41st Annual Convention, Stat- ler Hotel, Los Angeles, Calif.
February 11-14, 1957—
National Ready Mixed Concrete Association, 27th Annual Convention, Stat- ler Hotel, Los Angeles, Calif.
February 25-28, 1957—
National Concrete Ma- sonry Association, Annual Meeting and Exposition, Hotel Jefferson, St. Louis, Mo. Exhibit at Kiel Audi- torium.
1956
4
Crescent Scrapers *
2
the SAU t RMAN Scraper Machines METHOD...4
Engineered to Your Operation
Ae oe ek a OTE A oe
SAVERMAN BROS bn Ol iimeove
9018 APIO Sit
GAAS AL AAPLA j
Vigw shows rapid shifting bridle frame and all operating cables. Crescent may be seen in background conveying load to reclaiming hopper jvet in front of mast
Centact Soverman's engineering depart- ment for specific recommendations and information. Ne ebligation
Ask for Catalog A, Drag Scrapers 24 pages of job photos and specifica tions. Request Field Reports show ing your material being handled by the low cost Sauerman Method.
630 S. 28th AVE.
Enter 1001 on Reader Card
Stackline and Tauvtline Cableways *
The Sauerman Method works equal- ly well over widely differing areas and span limits... on hills, swampy ground or underwater .. . handles any material a dragline can dig.
Every scraper machine is powered by a Sauerman Roller Bearing Hoist, especially designed to withstand sud den shocks and changes in speed
When a rapid shifter is used, a third hoist drum is added toshift the bridle frame. The rapid-shifting bridle sys- tem (upper right of drawing) permits frequent shifting of the scraper’s line of operation in non-caving material, shallow excavations or overburden
Operating costs are lower—basically, it is cheaper to drag material than it is to lift and transport it. You elimi- nate the power costs of moving heavy machinery about the area. You pay only for pay loads-——not dead weight When expendable parts —sheaves, clutch or brake linings —are replaced, the machine is restored to practical- ly new condition.
Sauerman can help you select the method of materials handling most profitable for your job-—-a system that will give you the lowest cost per cu. yd. handled.
BROS. INC. BELLWOOD, ILL.
ROCK PRODUCTS November
Above drawing was prepared for a specific drag scraper installation and does not represent maximum spans
Durolite Blocks
1956
ideal’s Expansion Told IpeAL CEMENT Co., Deny announced that it is proc: a $2 million expansion and ren program at its Okay, Ark., pla will increase the plant's capa percent, to 2,000,000 bbl. pe In other quarters, Ideal ha a Canadian subsidiary, Ideal ¢ Co. Ltd., headquartered in \ B.C., for the development of the pany’s quarry and plant sit in Canada Rebuilding of Ideal’s plant tcher, Colo., is expected to way by December 15. The addit the Baton Rouge, La., plant New Orleans terminal been completed The new Houston plant is to put its first units into operation January 15. A second kiln stalled in the Houston p will bring its capacity to
addit
per day
New Canada Cement Plant SASKATCHEWAN CEMI ( Regina, Saskatchewan, has | duction of cement at its n lion plant on a 320-acre Regina, Canada area. Fou standard portland, h oil well and modif
cement ly-strength phate, will be produced capacity set at 850,000 bbl Ihe corporation has lim the Mafeking, M where the stone is crushed and s|! to Regina. Clay and silica san tained near the plant, and iror and gypsum are brought in fr itoba and British Columbia
serves in
j
Gypsum Lime Acquires Plant LIME AND AI
ANADA,
GsYPSUM Co. oF ¢ Ltp., Toront Can., has announced th of Windsor Plaster Co., Halit Scotia. A $100,000 plant imp program will expected to double the Win rent production. Kenneth G will continue as manager of sor operations, says P. N. G ident of Gypsum Lime
get underwa
Gravel Firm Purchased GRAVEL Propucts Corp., B N.Y., has been purchased by H le Industries, Inc. The acqu made through a purchase of tal stock. Ralph F. Peo, presid Houdaille Industries, phases of the business of Gra
said
ucts, a 30-year old company
$ LONG HAUL —FEven the longest Barber-Greene Conveyors are built of standardized components produced on a
precision, quantity production basis. They can be assembled in almost limitless combinations to cut the time and cost
of any material handling job.
Long or short haul—it costs less to move
materials with belt conveyors
Thousands of installations—ranging from a few feet to thousands of feet—prove that belt conveyors move bulk
material at lowest cost
No other machine is so simple in construction or requires so little maintenance. No other machine can deliver such
high hourly capacities with so litle power or attention.
Barber-Greene has given a new meaning to belt con- veyor economy. Built of standardized components, Barber- Greene Conveyors are delivered sooner . require less
enginecring -.. are erecte d faster give top pertormanc ec
. and are more easily altered to meet changing or ex- Conveyors are available
vanding requirements. Being standardized, repair parts are Ppé & 1 . I I in the width and length to { ve ‘ I hese small » handle the
SHORT HAUL Even the { ; er-<,reene
lal omponents
readily available—usually from the stock of your local dis- conveyors provide the ec
tributor. widest range of m t rl flexibility 54.7 -Pt
Send for this 192-page conveyor book. It's comprehensive, easy to use. Write for Catalog 76-A on your company letterhead Serb, Secon
Conve, or, Barber-Greene rs : | 9
AURORA, ILLINOIS, U.S.A.
»- OITCHERS..- ASPHALT PAVING EQUIPMENT
CONVEYORS ...LOADERS Enter 1019 on Reader Card
ROCK PRODUCTS, November, 1956
U N LOA D 16 0 0 gravel and ready-mixed c
ness, will be integrated wit! the Buffalo Crushed Ston
TO N BA RG i S Houdaille subsidiary Javanese Learn About Cement
FOURTEEN INDONESIAN | EER
chemists and technicians | pleted a course of instruct O Kennedy-Van Saun Manuf and Engineering Corp.'s |
Danville, Penn., to prepare WITH KIESLER BUCKET! for management of the : ° Cement Plant, Java, Indon , Reedy, president of Ker Saun, arranged the training | in which every phase of facture was included Kennedy-Van Saun ha Gresik complete equipm: ment plant which will ha capacity of 250,000 Equipment includes two rotary kilns, and five 8 ing mills with 1000-hp. mot rison-Knudsen Co., Inc., Bi is the general contractor
Texas Plant Near Completion PexaS PORTLAND CEM! (
Orange, Tex., expects t
ment in quantities to Tex
the first of the year, as th
final process of completior
rotary kiln, supplied by Ke
Saun Manufacturing and |
Corp., New York, N.Y., ha
There |S a reason: The " ‘ . stalled. The plant, report KIESLER CLAM SHELL ; wv Diehl, Sr., president of 1 DEPENDS ON THE r. ‘ we land Cement Co., embox PROVEN PRINCIPLES owen y OF LEVERAGE, NOT Y A the cement industry. Const ON DEAD WEIGHT begun November 1, 195‘ (COUNTER - WEIGHTS) FOR DIGGING ABILITY. The leverage of the 2-lever-arms exerts its ul force directly to the shells and cutting edges, thus digging-in Start Sand Plant
@ greater payload every time. And this maximum in power and per- EpGar PLAstTic KAoLin ¢ formance is accomplished with a minimum amount of cable and reeving. Fla., announces the complet The name KIESLER on your bucket is an assurance of superior performance cilities for production of and high-quality construction; backed up by over 64 years of bucket- sonry sand for contracto1
manutacturing experience! for concrete block manuf
sand-blast grade sand. C\
PROMPT SERVICE AVAILABLE stem atemn aati toc the inst
Factory service on Kiesler Buckets and as an accomoda- pee ay eee tion on other makes, too. Whatever the problem, feel ’
free to call on us. Pavement Yardage
JOS. F. KIESLER co AWARDS of concrete pa
the month of September
total awards for the first 9
1956 were listed by the P
ment Association as follow y
technical advances and inn
944 W. HURON ST. @ CHICAGO 22, ILL. © MONROE 6-7144
Enter 1002 on Reader Card 44 ROCK PRODUCTS, November
SNES re PET Oe RT TR oe
A at S itbetnce sie heb si Pe 3
«They were blasting right outside the window but we never lost a teacup!
SAYS MR. V. H. SHUSTER, OWNER VAN CLEVE CHINA & GLASS CO.
we wrvevrL v % Photo shows nearne cticul
MILFORD, CONN.
Turnpike blasting op: » the
Van Cleve China & Gla
FOR GOOD COMMUNITY RELATIONS... ‘‘GOOD-WILL” TECHNIQUES IN BLASTING
Today, your blasting must be so pre- cisely planned that the business and family life of the community can go on without disruption.
Realizing the importance of good community relations to your business, AMERICAN’s engineers have developed blasting procedures that we call “Good-
iiit High Expl : I Permi i
Blasti: Blast
ROCK PRODUCTS
L\MERICAN
Will” techniques. These techniques are at your service, to help you attain maximum blasting efficiency and at the same time minimize the effects of noise, vibration, and shock.
A MERICAN’s engineers are trained spe- cialists, always ready to assist you in the selection and use of our high-grade
LINI
etric Blastis Instantaneou Regular Dela
Solit-Second [de
AMERICAN
ti
November
ories
lepe Nida,
195¢
Their ski of the
materials xpert un-
derstanding iques in
el of the
you
blasting ire part | i!
many services you tain when
are an AMERICAN custome!
AMERICAN plants and conveniently loc
ery direct to you
—
— CYANAMID
AMERICAN CYANAMID COMPANY EXPLOSIVES DEPARTMENT 30 Rockefeller Plaza, New York 20, N.Y.
Sales Offices: New York Cit Pottsville, Pa Bluefiel
Scranto Pa LW.Ve
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45
WE
HAVE A CORE DRILL MACHINE
3000 FEET DEEP”
*Depending U pon Size Core Required
THAT WILL MEET YOUR NEEDS
Yes... if you need a small one or a heavy one we have just the core drill machine for you. Manufac- tured by us and used in our own contract drilling department they are made to operate efficiently under the most difficult conditions, giving you the utmost in performance. Write today, giving full de- tails and a descriptive folder on the proper size
(Skid
will be sent. truck mounted, )
mounted, trailer mounted,
SPRAGUE & HENWOOD, Inc.
SCRANTON 2, PA.
BRANCH OFFICES: NEW YORK + PHILADELPHIA «+ PITTSBURGH + ATLANTA GRAND JUNCTION, COLORADO*+ BUCHANS, NEWFOUNDLAND
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ROCK PRODUCTS, November, 1956
International Minerals To Build General Office
INTERNATIONAL MINERAI ICAL Corp., Chicago, Ill new general headquarte: Skokie, Ill., a nearby subur nearly $3,500,000. Along wit isting research laboratories cation, the total investm $4,500,000
President Louis Ware p that the new facilities will space for estimated growtl 1965 with sufficient ground able for further expansion. S company moved its genera from New York to Chicago sales have increased from $1 3,61 to more than $96,000,000. H said that nearness to the new O'H Airport was a consideration in sel ting the location. The comp maintains two planes for its sta contemplates the construction “heliport” at Skokie for accos tion of a helicopter
The new construction will con a five-story administrative offi ing, a three-story building to staff and operating divisions story electronic center to serv functions on the site, and a or cafeteria building connected t ministrative building by an em; lounge-auditorium, all air-conditior Total number of employes at will be approximately 600
International Minerals is on« world’s principal phosphate prod and is a leader in potash, feldspa bentonite, and perlite production. It has six product divisions with n refineries and manufacturing plants at 72 locations in 26 states and dian provinces
{Tt
t}
Calaveras Makes Purchase CALAVERAS CEMENT Co., San I cisco, Calif., announces the p of a majority of stock in five t mix and gravel producing comy in California’s central valley. | in the $500,000 transaction ar ard Materials Co., Inc M River Rock, Inc., and Concret ply Co., Inc., Merced; Merce & Gravel, Inc., Atwater; and St Rock Co., Inc., Escalon
Increase Scheduled Output MiIssissipP! VALLEY PORTLAN MENT Co., Vicksburg, Miss., | nounced an increase in the of its plant near Vicksburg, now construction. Originally plann have a 1500-bbl. per day capa plant is now slated for a 200 output. Production is scheduled gin within a year
A single strand
of the mighty No. 860 chain can handle 30” buckets!
Now you can use one strand in place
Biggest. With an 18” span between outside holes in the K-4 attachment link, a single strand of Kensington’s new No. 860 elevator chain easily handles buckets up to 30” wide. Strongest. The No. 860 chain is heavied-up at all critical points. At its weakest point, for example, it has a cross section of 3.75 square inches at 76,000 lbs. psi for an ultimate strength of 285,000 Ibs. Using the customary 6:1 safety factor, this means the No. 860 has a safe work- ing load of 47,500 lbs. . . . almost 507, more than the next strongest elevator chain on the market!
Consider too, the 1144” pins live bearing area, barrel contact area, *,” bucket bolts. Or whatever basis you compare, the No. 860 far excells in ruggedness.
Built of KENKROME. The No. 860 chain is built from Kenkrome
an unusual alloyed manganese steel specially created by Kensington to resist wear and abrasion
Exceptionally hard to begin with, KenkKROME has the ability to de velop even greater surface hardness when exposed to use, Yet beneath this ever-hardening “skin”, the metal stays tough and able to with
Other wear-resisting KENSINGTON replacement parts:
Pr.
stand the shocks and impact that break steels which are hard all-the
way-through
Kensington renewable tooth sprockets are also big monev savers KeENKROME Tooth Segments can be replaced by 2 men during lunch hour without even removing the chain! And a new set of tecth cost only a fraction of hat you'd pay
prod ket
ur next eleva
for a complete on
Whe n vou ordes tor chain, it w ' ou to pecify Kensington 60 Chain and
it new able
STEEL COMPANY
m KEMSINGTON STEEL co., Dept. R, 505 Kensington Ave., Chicage 78, iil.
SUBSIDIARY OF POOR & COMPANY. CHICAGO
<> } fy & ” . a j I ;
~ —
DIVISION HEAD SECTION for grinding mill hos exclusive design features which greatly prolong service life.
SCREENS, GRATES, LINERS
and other alloyed —— manganese steel re f placement parts fit
all standard cement ' mills
ne — ~
CHAINS, SPROCKETS
150 different standard chains ond sprockets plus many spe cial models all_of wear defying KENKROME
KENKROME ELEVATOR BUCKETS
far outlast ordinary fabricated buckets wherever abrasion and impact are important factors
replacement ports
ROCK PRODUCTS, November
[} Please send me more information on the No. 860 chair ] Please send information on the following special wear-resistin , , Gg
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Completed in 1954, this Research-Cottrell
precipitator cleans the gases from Kiln
No. 5 of Missouri Portland’s Prospect Hill Plant. The gases from this rotary wet process kiln pass from the kiln end housing, through the precipitator, induce:
draft fan and then up the stack
Rapping puffs were eliminated in this installation with Research-Cottrell’s electronically controlled M. |. Rappers This method of continuous, sequential rapping avoids dust re-entrainment in the gas stream and assures optimum
precipitator performance at all times
Research-Cottrell Precipitator
In addition to this installation, Missouri Portland has ordered three more Research-Cottrell precipitators. One, installed early this year, cleans the gases from Prospect Hill’s 12’ x 450’ wet process kiln
Two other units have been ordered for two dry process kilns at the Sugar Creek Plant, Kansas City, Mo. M. I. Rappers
will be included on all these installations
For a detailed description of Research-
Cottrell precipitators and their applications
in the cement industry, write for Bulletin GB
ottrell,
HINTS
AND HELPS PROFIT-MAKING IDEAS DEVELOPED BY OPERATING MEN
Speeding Up Bulk Loading of Cement Trucks TRUCK-AND-TRAILER UNITS for haul- ing bulk cement in the West is often referred to as a “train”. Bulk-loading of a train involves. various types of equipment, all designed to speed up loading and at the same time maintain accuracy of weights Ihe illustration shows part of the “underneath” section of a nest of ce- ment silos which is immediately above
Silo installation for loading out bulk ce ment truck and trailer units: (A) shows the Airslide B) the chute to the bulk truck ond (C) is a
rubber nnection to
show
cement tonk
hose c the cement
train
The area marked “A” shows the 14-in. Fuller-Huron Air slides that collect the ce to either “B" or “C”” Directly is a scale platform, and is a second scale
the train one of and deliver ment under “B similarly under “C” platform for weighing the trailer in dependent of the truck or semi unit In this instance, “B" is the chute that bulk tank and was part of the original assembly This arrangement, shown at “B”, had its disadvantages and the plant is now experimenting with a rubber hose as shown at “¢ At first a worn out section of reinforced rubber hose, sim ilar to that the docks for pumping cement, used but this
delivers to the truck's
used at was
50
was too heavy. The rubber hose shown at “C” is a thin-wall, light weight sec- tion favored by the operators
At this installation there is a (Howe) for each scale platform, and a third dial that totals the weight of the train. As the distribution plant has two truck-ways, this means four scale platforms and six dials are available
dial
Removing Sand from Water System
A Larce West Coast SANnp GRAVEL PRODUCER, in an area where water is not too plentiful, sunk a deep well to about 450 ft. with the hope of getting more water at that depth although a considerable amount was encountered at 250 ft. A deep well pump was installed, but it was found that sand infiltrated into the water. If not removed, this sand might plug water sprays and cause other troubles
fo correct this condition, a 24-in Georgia Iron Works liquid cyclone was installed with a pump delivering to cyclone under moderate pressure Trapped sand is drained from time to time from the bottom of the cyclone cone by means of a molasses valve
The de-sanded water discharges to a large diameter, vertical pipe;-about 36-in. in diameter, the bot tom of which connects with a smalle: diameter pipe lying practically hori zontal and underground. This pipe runs to a rectangular dirt-dike reser vou the underground pipe are three 30-in. diameter vertical pipes. In one of the vertical pipes is a float that controls the pump motor at the deep well unit. A low pressure wa ter pump has been placed in one of
AND
concrete
Connected to
HIGH PRESSURE WATER PUMP
FLOAT LEVEL CONTROL MECHANISM —
: “ay LIQUID , | , YCLON *
f itl J+
Si! i SUT CONCRETE PIPE UNDER GROUND
MOLASSES VALVE 4 FP OPENED OCCASIONALLY’ Goan
4 LARGE DIA CONCRETE PIPE
ay | =
Above: Water reservoir dike. Below uid cyclone which desonds w deep well pump the other two vertical pipes i high pressure pump in the third pip Both deliver water to the plant
By means of the float mechanism the deep well pump operates until th reservoir is at a predetermined which may be for 24-hr. a though the plant normally run 8-hr The
reservoir vertical
day schedule wal and in the pipes is at the same level. Th well pump is a 600
g.p.m. B Jackson unit driven by a U. S.
LOW-PRESSURE WATER PUMI f TO PLANT —>
rd \ H20 LEVEL y (APPROX ) wenn WATER LEVE , | DIKE
H =
4
ONY m—“U
Diagram shows water storage system and method of desanding water with liqu
ROCK PRODUCTS, November
1956
Enter 1000 on Reader Card e
For the
C5 %
(Oe
Mine and quarry operators the world over have standard- ized on Euclid equipment for moving rock, coal, ore and overburden on the toughest jobs. At this big meta! mine in Canada, for example, 12 “Eves” of 22 ton capacity haul overburden and ore from a pit that's over 100 feet deep end will go down another 200 feet or more. These rugged Rear-Dumps have the stamina to withstand the day after day pounding of heavy excavation loaded by large shovels. With 300 h.p. diesel engines, they have plenty of power for carrying big loads on difficult hauls at travel speeds that mean more loads per hour.
Other Rear-Dump “Eucs" have capacities of 10 to 50 tons ++-engines of 143 to 600 h.p....single and tandem drive axles ...5 or 10 speed transmissions or Torqmatic drive ... spring mounted or semi-rigid drive axles. Your Euclid dealer will be glad to discuss your off-the-highway hauling problems and provide a production and cost estimate for present or planned operations. There's a good chance that he can show you the way to lower hauling costs.
EUCLID DIVISION GENERAL MOTORS CORPORATION, cleveland 17, Obie
MOVING EARTH, ROCK, COAL AND
Cyne Euclid Equipment
52
Super Loy
WOVEN WIRE SCREENS
Because they have been proven to have maximu! resistance to wear, L-S Super-Loy Screens keep thei: accurate openings longer cut down the expense of replacements, downtim« maintenance... and reduc: your screening costs t absolute minimum. Most sizes and weaves shipp immediately from stoc/
Write r Condensed Screen Reterence Cata J
LUDLOW-SAYLOR WIRE CLOTH CO. 602 Sevth Newstead Avenve, St. Lovis 10, Missouri
SALES OFFICES: Birmingham. 1727 Sixth Ave. North « Ch F
® Union Trust Building « We t ] ( t wrst AST tar Wire Screen and iron Work r Los Angele bsidiary, Ludlow. Saylor Wire nh Enter 1021 on Reader Card ROCK PRODUCTS, November, 1956
Packing Protective Devices
Iwo peas have been adopted by cement companies to prevent eye in juries in the operation of bag packing machines. In the sketch is illustrated a safety glass guard used by operators at Marquette’s Cape Girardeau, Mo.,
Hinged safety glass guard protect perator
ing machine plant as protection against the danger of bursting bags.
Packers at Ideal Cement Company's Okay, Okla., plant have solved this problem by the use of discarded con veyor belting as _ protective around the valve handles of packing
hoods
machines
Root Remover
A SAND AND GRAVEL PRODUCER in the Northwest uses two 36-in. diam eter root and EL-Jay water-logged chip removers. Sized and previously well washed gravel goes to each unit. Grav el sizes are |'2-in. to l-in., and 1-in to ¥2-1n
These root removers resemble log washers, each having a 15-ft. long tank and a 15-hp. motor to operate each mill. By having plenty of turbu lence in the pool area, lightweight re
Root remover which resembl«
g washer. Worn blades are rebuilt witt
ROCK PRODUCTS, November
fuse is lifted out and overflows to waste. The paddles on the logs are naturally exposed to considerable wear, but maintenance costs are cut a minimum by the use of Stoodite hard facing alloy No. 1027.
Movable Pump Supplies River Water for Plant
WasH Water for a Middle West crushing plant is supplied by a 5-in Gardner-Denver pump which draws it from an adjacent river about 40 ft. below the plant level
As the river level fluctuates rapidly with intermittent heavy rains, an ar-
? * Om Track to river surface to which pump is lowered on special carriage
rangement was needed to raise and lower the pump rapidly. Strong cur- rents ruled out using a floating sys tem. The pump was therefore mount ed on a supporting steel carriage riding on rails which extended down the steep bank to the river bottom. The
€
1956
Pump and motor | riage for wer
mounted ingle on the vered to the
pump | carriage » that
waters edge it wil ievel
Rinse Screens Under Bins
AT TIMES A SMALL PERCENTAGE OF SOFT STONE in i regate may undergo disintegratios f i bin o1 sto kpile due to ‘ ire of tons of material abo ement in a stockpile also | problem under all
coarse!
On Company installed small
bins contaimungs
IMustration extendir
than have by len
main
pipe pump
at 40)
Wich electric leads the
Magnetorque and Electronic Controls
shovel
hie Three’
put WAY AHEAD!
How can P&H performance be so far ahead of all other electric shovels?
One reason is Magnetorque, the electro-magnetic transmission that gives smooth, stepless operation. Just look what you get. Simplest hoist control, by far Simplest hoist machinery, by far. Instant response to control and load changes Automatic cushioning of shock loads.Greater bail pull in the bank! Greater efficiency Cuts maintenance and operating costs. Plus many other advantages. Exclusive with P&H.
Another reason. P&H Electronic Controls. They give you instant response to
signal. Stepless control. 12% faster cycle. 16% savings in operating time. Less
operator fatigue. Reliability. Simplicity, plus many other advantages, exclusive
with P&H.
For complete information about these exclusive PGH features, and others, call!
your P&H representative. Harnischfeger Corporation, Milwaukee 46, Wisconsin
For Modem Engineering, Look to HARNISCHFEGER
ELECTRIC SHOVEL OMVISGION
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ROCK PRODUCTS, November, 1956
NEW
Flange Lubricator
TRANSALL, INC., Railway Division, 109 N. Lith St., Birmingham, Ala., makers of Transall Flange Lubricator, Lubricating Sticks and Flange Turn- ers, suggest the use of these lubricators to cement and slag companies having rotary kilns. The flange lubricator is pictured in use on a rotary kiln at Birmingham Slag Co. They are also reported to be effective on diesel lo- overhead
where-
comotives, diesel cranes, cranes, and mine locomotives ever there is flanged wheel friction The Transall Lubricator can be mounted in any suitable location that moves with the lateral and vertical motion of the wheels. Three sliding adjustments permit placing the lubri- cating stick in the throat of the flange A high
turned
from any mounting position flange, which can then be down with the Transall Flange Turn- er, is said to result from use of the lubricating stick
Enter 114 on Reader Card
a .
Disc Filter
Denver EquirpMent Co., P.O. Box 5268, Denver 17, Colo., has brought out a new 9-in. diameter Disc Filter which has 105 sq. ft. in the filter area per disc. There are 12 segments per
MACHINERY
disc instead of ten, providing more filter capacity. Patented filter segment design provides gravity drainage prior to discharge, resulting in drier filter cake, and flexible bellows-type hose prevents tension on the valve cover
Enter 115 on Reader Card
Belt Fasteners
FPLexip_e Steet Lacine Co., 4640 Lexington St., Chicago 44, Ill, has an- nounced a faster method of splicing conveyor belts with Flexco Belt Fas teners and Flexco Power Tools. A new boring bit and alloy steel wrench have been designed for use in standard electric or air impact tools.
The three illustrations show me- chanics using the Flexco Power Tools Fig. 1 shows a power tool boring bit boring holes in the belt for insertion of the fasteners. Fig. 2 shows the templet being used to position the bolts for one end of the belt after hav- ing inserted the fasteners through the holes in the other end. Fig. 3 shows one man using the power wrench to run down the nuts while the other is using two bolt breakers to break off the excess of the bolts that remain
Enter 116 on Reader Card
V-Type Engines
CATERPILLAR TRACTOR Co Ill., has brought out two hea V-type engines, D375 (Seri D397 (Series D). Available in charged, roots-blown, natural! ated and spark ignited version 8- and 12-cylinder engines ar cycle design. D397 is pictured
New features include: turboch ers which use the energy of exhau gases to increase power; cylinder head design for improved engine breathing ability; and exhaust manifolds offered in “dry,” “shielded” and “wet sions. The spark-ignited engine natural gas as fuel. In the new system, a magneto feeds low t current to high tension transf« located near the spark plug keeping the high tension lead short for a hot, positive spark Enter 117 on Reader Card
'
Conveyor Stacker
LinK-Be_t Co., Prudential Plaza Chicago, IIl., displayed a model of a 275-ft. radius traveling belt conveyor stacker designed for a specific stock piling operation, at the American Min ing Congress 1956 Mining Show, Los Angeles, Calif., October 1-4
rhe self-propelled stacker is capabk of stockpiling a 90-ft. high x 800 ft wide x 1300-ft. long pile. The stacker will be fed by a 1400-ft. trailing belt conveyor Enter 118 on Reader Card
nf
1956
Enter 1067 on Reader Card *
56 ROCK PRODUCTS, November
.
spb DHOVEL eK But the YD" = Business of at 6 é Y AN er AY, Wy fy Superior Stone Co. : Bez” — is ah
‘i : ase & - fee “oS
39
NORTHWESTS The Superior Stone Co. of Raleigh, N. C., puts their
for machines in material that really tests equipment.
Look at these operations. It is years of performance
uperior ST Co., in stuff like this that has made Superior Stone Co. buy their 35th Northwest
Northwests are rea/ Rock Shovels! Get on a
Northwest if you know operation. Get the feel of
the controls. Feel that crowd take a-hold. The
dipper goes right on through as the hoist takes it up
— no “re-starts” here. It’s a full load in one cut. Remember,
the Northwest Dual Independent Crowd utilizes force most
other independent crowd shovels waste force that puts
greater effectiveness at the dipper lip for handling tougher digging and producing more output
To Northwest digging power add the Feather-Touch” Clutch Control which brings ease of operation without the complications of pumps, piping and compressors; the Cushion Clutch that eliminates shock overloads before the damage is done; Uniform Pressure Swing Clutches that cut spotting time by eliminating the jerks and grabs in swing- ing; Northwest simplicity of design that makes upkeep easy and reduces “down time’, and all other Northwest advan-
tages that make Northwest a rea/ Rock Shovel One of Superior’s old Northwest 80-D’s at Red Hill, Va. This machine is almost 9 yeors old and You can plan to have a Northwest. Now is the time to find
hes handled almost 6 million yards of Rock. out about Northwest design and operation. Why not talk it over with a Northwest man?
NORTHWEST ENGINEERING COMPANY
1514 Field Bidg., Chicago 3, Ilinois
ORTHWEST
SHOVELS - CRANES - DRACLINES + PULLSHOVELS (Jan. 28-Feb. 2, 1957
[ ALE AM BORG PON OTE) A OUelOe
Convertible for any Mining Material Handling or Excavation Problem
$33 Billion Road Program Means. .
Growing Pains For Sand Ready Mix
By EZRA C. KNOWLTON
Mr. Knowlton knows highway and in- dustry problems. His 40 years in both fields qualified him to lead the NSGA NRMCA joint committee on federal high way legislation. He has represented both groups at Congressional hearings; is on the executive committee of NSGA. Since 1941, he has been executive vice-president and director of Utah Sand and Gravel Products ¢ orp
na S o
> So So
“” z °o - ~ a So x 500” u oO w 4 S -/ = =
MILLIONS OF SHORT TONS w Oo oO
Th) 1930 1940
ROCK PRODUCTS. November 1956
and Gravel
Industries
AND AND GRAVEL—now first in tonnage pro-
duction of all minerals—form the solid foun-
dation on which America travels. Small won-
der, then, that the new $33 billion federal highway program will have considerable impact on the sand and gravel industry. But in estimating this impact, it should be underscored that the rap- id growth in use of sand and gravel indicated con- siderable further gains even without the new road program. With expanded federal highway con- struction, the industry will prosper as never be- fore in history.
Sand and gravel appear in many important ways in our road building program. They are found as aggregates with cement, asphalt and other binders to form all kinds of paved surfaces. They serve alone as gravel bases for pavements. They often form finished surfaces for secondary highways. As a matter of fact, sand and gravel are so import- ant and basic to American industry that trends in their annual production are a pretty good measure of the ups and downs—not only of construction volume—but of the general economy of the nation.
What does future sand and gravel production look like without the new highway program? Dis- counting the depression and World War II, sand and gravel sales have increased steadily over the last 50 years—paralleling increases in the total volume of construction. Projecting construction volume into the future along the same upward curve (see chart), we get an estimated annual production of sand and gravel of about 640 mil- lion short tons for 1960, 700 million for 1962, 800 million for 1965, and 920 million for 1969.
Now, what can we expect in the way of increas es in these figures as a result of the new federal highway program? In a comprehensive report re-
leased in July, 1956, the Bureau of Public Roads estimated the normal highway aggregate demands for all road-building agencies to be about 403 mil- lion tons in 1955. Assuming two-thirds of this to be sand and gravel, we have about 270 million tons as the present annual highway construction de mand for these materials
But, projecting highway need including the expanded federal road building, the report estimated that approximately 750 million required annually.
to 1969 and
tons of aggregates will be Again applying the two-thirds yardstick, we get an annual demand of 495 million tons for sand and gravel during the accelerated road building years
or an increase of about 225 million tons annually because of expanded road building under the Kis enhower program, Adding this to the non-highway projected figures, we have an estimate for 1960 of 865 million tons, increasing to an annual de mand for sand and gravel of 1,145 million tons by 1969. This is based on the assumption that (1) our economy continues its present rate of growth for years; (2) that there are corresponding in creases in needs for sand and gravel; and (3) that
the $33 billion highway program wil! be financed and constructed as now planned
Expanding production of sand and gravel to meet those increasing demands involves two inter related problems. First, their low cost. Second, the real measure of the ability of the sand and gravel industry to meet growing highway demands is not one of plant capacity, but rather sufficiency of available near-at-hand deposits from which large amounts of these materials must come. Present low cost results from two factor relative ease of production from raw to finished product, and wide distribution of the raw materials throughout the country, which keeps down haulage costs. As these easy-to-work, near-at-hand deposits become ex hausted, the costs of production especially of transportation—are bound to risé
Because nature’s bounty has produced and dis tributed these priceless natural resources so gen erously, people generally have taken it for granted that our supply of sand and gravel inexhaust ible. They are unaware of the production depletion of near-at-hand reserves—in spite of the produc- tion records which are being set yearly. The con cern of those near the industry, however, has been real and growing. Vincent P. Ahearn, executive secretary of the National Sand and Gravel Asso ciation, has sounded this alarm wherever possible, as have many other industry leaders. J. Rutledge Hill, chairman of the Association taxation, has carried to Congre the sand and
committee on
gravel industry’s plainly justifiable claim for de pletion allowances in the Federal tax structure. As a result, at least partial recognition has been ob
tained.
ROCK PRODUCTS, November, 1956
Pending exhaustion of sand and gravel reserves
has been long foreseen by close observers of the
problem. The following prophetic words—written a generation ago by Edmund Shaw, then an editor of Rock PRODUCTS—are even more applicable today.
“Survey of our sand and gravel resources shows that, while they are ample for the present, another generation will see most of the deposits near our large centers of population exhausted and some of them will be exhausted before that time. In the towns which depend on river dredging for sup- plies, it becomes necessary to go farther away each year. Our sand and gravel deposits are great national assets and, like all mineral deposits which are being worked, they are dying assets.”
Mr. Shaw continued on an optimistic theme that there were still available new acreages of gravel deposits in the neighborhood of our popu- lation centers. The construction of better high- ways, he continued, would make it possible to move the finished product over longer distances.
Preparation of the subgrade for a modern highway
When this was written (1926), sigi trends in highway construction were grea lieving the pressure on gravel deposits ir metropolitan areas. The expanding nation: building program was producing in all part nation highway contractors capable of 0) efficient portable gravel plants—just the: into general use. As the highway impr program moved out to fill gaps in rural available roadside gravel deposits were ex; thus keeping down transportation costs as relieving the important commercially operat posits. This trend has continued to the pr: The recent Bureau of Public Roads report mates that, of the 9710 million tons of al! gates needed for the 13-year highway prog 5635 million tons will be produced by hig!
contractors.
The deposits near population centers hav: fared so well. The sand and gravel industry
60 ROCK PRODUCTS, November, 1956
Ready-mixed concrete highways being delivered in a special patented - type carrier truck
for
be healthier today had not so many of these lands been devoted to industrial plants, highways, airports, and similar uses. Invaluable Even more
subdivisions,
gravel deposits are thus alienated. serious, present day operators are hampered great ly in their attempts to locate and develop the re- to zoning regulations and neighborhood opposition. The in- dustry has itself to blame for much of this op position. It has grown out of past carelessness in
maining available areas due adverse
leaving worked-over lands as eye sores and health hazards. It also resulted from not exercizing prop er regard for the rights and interests of the gen eral public.
The National Association, through its Public Relations Committee headed by E. K. Davison, president of J. K. Davison and Bro., Pittsburgh, is appraising this problem to assist its membership in finding a solution consistent with the public interest. Results from an industry questionnaire has informed the committee that zoning problems, now general throughout the nation, are going to become more serious and complex in the years to
come.
ROCK PRODUCTS,
Ready Mixed Concrete Industry
The effect
will not
industry, even though
dustry
be 3
of the
is great on
produced and
yards of concrete in
sumed
more
than
100
pa
( Xpanase adi the rear this con old about 1955. In tl
million
(about 35‘. of total production)
lion tor
of
concrete
agyreyga
mixed concrete cannot compet
pavers on highway job
ant a part In paving a
ing construction. A Mixed Concrete As
it hast
it ha if
of total ready mixed concret
went into streets and highwa
mix has found a most important
concrete for such aux
and gut
ters,
sidewalk
lia!
pa
ociation note
;
r
report of tne
and Ma
tures generally found in metrope Without doubt, there will
during
November,
the
1956
early
tage of
program
di ¢ oncrete
in ion cubic
it
tf cement,
con
ne 125 mil
e ready
ye concrete
1d import
and build
Ready ut 10.4% on in 1955 er, ready
ipplying
1) i curbs Vi truc aita
emphasis highway
fo page 114
61
Seperation of gypsum from dolomite or etfected ir x O-ft. drurr eparator
Celotex Corporation
Doubles Gypsum
Plant Capacity at Port Clinton
Spend $3.5 million for a heavy media plant to per-
mit quarry operations on single level, and a modern wallboard and packing plant
ROCK PRODUCTS, November
i Ee a a ;
By KENNETH A. GUTSCHICK
Architect's drawing of entire gypsum plaster and wallboard plant layout
~
ELOTEX CORPORATION completed a $3,500,000 C expansion and modernization program last year at its Port Clinton, Ohio plant which doubled ca pacity. An important part of the modernization was the installation of a heavy media separation plant which permits the quarry to be worked in one level with all stone going to the H.M.S. plant. Formerly, a benching system was used to quarry out four gypsum “seams” in the 37-ft. face to eliminate dolomite and shale partings.
Celotex also built a new, modern wallboard and packing plant and expanded the calcining depart ment. The board plant incorporates a 600-ft. Ehrsam wallboard and lath machine and an & deck 350-ft. Coe dryer; and two new paddle-mixers and bagging machines serve the packing depart-
ROCK PRODU(
ment. In addition, the company constructed a com pletely new gypsum crushing creening plant ahead of the H.M.S. plant corporates a modern material handling ten neluding a 5000-ton covered surge pile following the primary crusher. The new facilitic ed in opera tion during the summer of
Overburden in the quarry d on con
ling are
tract by scrapers, while drilli required in removing dolomite c: k over the No. 2 gypsum seam. Caprock d ’ in. holes) is handled by an Ingersoll-Rand lraboom and X71WD drifter mounted o1
Caterpillar D8 tractor
c.f.m. compressor, al
TS, November, 1956
+
- a
3 : ‘ | Roeny 13 et
mi as ~s
Og Sete ae *
ar, 4 wa ae ee ate 0
~~”
Raw rock storage building with roof sloped to angle of repose of material
(rear end), which is driven through power take off. A Joy 225 AS rotary drill, with tri-cone bits, is used in primary drilling, putting down 6%-in. holes, at an 90 f.p.h. rate. The spacing pattern is 12- x 15-ft., with two rows shot at a time.
Quarry loading is handled by a Northwest 80D shovel fitted with 2!.-cu. yd. Amsco buckets. The haulage fleet consists of four Euclid 36FD rear- dumps hauling 17-ton loads. Two Caterpillar D8 tractor-bulldozers round out the quarry equip- ment.
At the primary crusher station, stone is dumped into a 100-ton steel hopper, and fed by a 4- x 16-ft. Traylor Sheridan grizzly feeder to the 42- x 48- in. Traylor Type “HB” toggle-type jaw crusher. Fines bypassing the crusher and the crusher prod- uct are carried by a 24-in. conveyor, 422-ft. centers, to the raw rock storage. The crusher, driven at 150 r.p.m. by a 150-hp. induction motor through V-belts, is set with a 5-in. opening. The
primary conveyor incorporates a 24-in. Barber- Greene motor-driven tripper which distributes the crusher-run material to a 70-ft. wide by 80-ft. long surge pile. The pile is protected from weather by a corrugated steel roof sloped according to the angle
of repose of the material. A bulldozer is used t extend the pile or push up to the reclaiming tu: nel. Two 3- x 4-ft. Jeffrey-Traylor Type 4D vibrat ing feeders reclaim the material to a 24-in. con veyor, 248-ft. centers, serving the secondar crusher building.
This conveyor discharges to a 5- x 12-ft. 7 Rock F600 single-deck scalping screen which reé jects plus 3-in. stone to a 3-ft. Traylor TY crusher (100-hp. drive). Both the crusher and throughs join and are carried by a 24-in. jack knife conveyor to the 24-in. conveyor, 145-ft. ce: ters, feeding the sink-float building.
scree!
For efficient operation of the H.M.S. plant, th« feed must be thoroughly screened and washed to remove all fines—even those clinging to large: particles. Beneficiation of gypsum is effected in a 10- x 10-ft. Wemco drum separator, which is d en at 5 r.p.m. by a 15-hp. motor. The heavy media used consists of a mixture of finely ground mag netite and ferrosilicon.
To reclaim heavy media used in the process, th float and sink products are fed to the two rinsing screens, with ,,-in. screen cloth, each having thre
64 ROCK PRODUCTS, November, 1956
Primary drill puts down 63 holes at an
10 f.p.h. rate
screening sections. Water sprays are located over the second and third sections. Part of the media passing the first transverse screening section goes by gravity to the media sump for return to the drum separator. Dilute media passing the second screen section flows to another sump from which it is pumped to a media reclaiming circuit which consists of a drum-type electro-magnetic separa tor, a double spiral densifier, and a demagnetizing coil from which the media is returned to the media sump for re-use. Wash water from the third sec tion of each rinsing screen flows to a third sump from which it is pumped to the second screening sections for re-use.
Water is doned gypsum mine by two 6-in. pumps, which deliver it to a tank on top of the H.M.S. plant for distribution to both the H.M.S. and wallboard plants. Wash water from the plant is discharged to a settling pond and returned to the mine for re
obtained from the company’s aban-
use. Air for cleaning equipment is supplied at 80 p.s.l. by a Joy Model 25 100-c.f.m. compressor. The H.M.S. plant was designed by Western- Knapp Engineering Co., Chicago, Ill. It features a centralized control panel located on the top floor of the building for operation and all plant facili- ties, as well as the units between the raw rock surge pile and the H.M.S. plant. These production units are electrically interlocked, and an automatic alarm system (horn and blinking red lights) is uvailable to indicate malfunctioning units. Rheo-
ROCK PRODUCTS, November, 1956
stat controls for the vibrating feeders under the surge pile are also located at the control panel,
thus permitting the plant operator to easily change the plant feed according to operating con- ditions.
Four kettles in the old mill building and one 15- ton Ehrsam kettle in the adjoining new mill build- ing are used in producing gypsum stucco at a 600 t.p.d. rate. In the older plant there are two parallel circuits, each involving a 6- x 50-ft. rotary dryer and a hammermill, the products from both mills being fed by bucket elevators and conveyor to three Kent air separator Tailings from the separators are reground in three Raymond roller mills, and these products, plus the separator fines (averaging 85 percent passing 100 mesh) are taken to the kettle feed bi The kettles are lined with firebrick and fired with natural gas. The cycle is about 2 hr., with the stucco d nto the hot pits at 340 deg. F. It is then taken by serew conveyors and bucket elevators to the new mill building, where it is either tube-milled or combined with the new stucco product for transfer to the wallboard plant.
In the new mill building, grinding of raw gyp sum is also two-stage, involving use of a Penn sylvania C3-30 reversible hammermil!l and a 54 in. Raymond high side airswept roller mill. The former is fed by an apron feeder from a 150-ton steel tank, and a bucket elevator transfers the product to the roller mill surge bin. Besides gind ing to 85 percent passing 100 mesh, the roller mill dries the material by means of a flash drying sys tem. A low pressure Maxon gas-fired air heater with a 3,400,000 B.t.u. per hr. rating ised for this purpose; it has a tempering Tes damp er for automatic temperature contre
Fineness of grind is regulated ariable speed Whizzer separator cater of the mill. Ground material is drav yh the Whiz zer blades by an exhaust fa) m being collected in a 9-ft. cyclone mo ter e rool The cyclone has a 12-in. motorize wk valve for discharging to the oO} ettle feed bin Iixcess air and moisture on he mill are exhausted by a ve an to atm ere, the gases passing through : ft. concent or colle tor, where the fine dust overest returned to the mill for regrinding. A damper at the inlet of the vent fan is used to cor amount of ng. The
erential
hot air taken into the mil roller mill has a Raymon vacuum-electric feed control! vhich reyulates the feed according to the pre througn the system. To prevent the m during drive failure, the feeder motor i e) ked with the mill motor
fo page 82
65
Kansas Plant
Sets Turnpike Crushing Record
Triple-unit Set-up Gets Production Up to 400 t.p.h. Despite
High-Ratio Crushing, Stubborn Limestone and Dampness
ROCK PRODUCTS, November, 1956
KANSAS TURNPIKE crushing-plant operator and his son set a new record for crushing stone on that job. They bet on their combined ca
pability and a firm belief in a triple-unit setup to
outstrip competition in a head-to-head start. And they won. Output at their plant reached 100,000
tons while a neighboring producer was running up 65,000 tons. Up to that time, the plant nearby was regarded as one of the most efficient on the Turnpike.
J. D. Thomas, who operates the plant near Udall, Kansas, is respected for his ability to coax equipment. He and his James Co. of Rus- of Nacagdoches,
extra tonnage from son run the crushing plant for T. L ton, La. and R. W. McKinney Texas. Those two companies bid together and got a 580,000 - ton crushed stone base course rock, and asphaltic con-
assignment for sub-base
crete aggregate production Acceptable rock was so scarce in the area that
ROCK
rock,
PRODUCTS, November
Secondary section of plant
)
the pit was located 25 n Because of this, about 50 used, reducing the crushing 290,000 The stone, which is soft and Thomas slowly gathered what
tone
proce
tons. damp
ment he three-unit crushing plant that for
|
supercharged MI-122 Murphy di
a horsepower edge. Conveyor belt
for speed. Pulleys have been strategic points and e» belts match the
and throw rock a foot ir
strain
head-pulley points Lightweight aluminum reach 16 feet up into clean air abe That saves wear and tear on eng jacked ahead
intake
jaw unit has been
boost usable grizzly area by 50
1956
nign
needed to move and el
r?
reduc
¢
irnpike will ye Oo about
lime
equip
trie DASIC etup A ised for hopped up ize atl
yth drive run full
t their
primary feeder to
im
, H /
Left to right W Ff Thomas and his father, J. D. Thomas. who
jointly supervise plant Progressive stone reduction from apron feeds tr f sizing screer
Augur type drill whic!
fn liameter t
portant in wet material. The operator’s control house near the jaw crusher is mounted so the plant operator can see the Dumptors as they come in with raw material, the feeder, and all equipment through the intermediate and secondary plants to the surge bin.
The plant at Udall originally consisted of a pi- oneer 153PRL primary unit and a 154VE second ary plant. The primary unit had a 30-ft. long 36- in. apron feeder and a 30-x 42-in. jaw crusher for primary reduction. The secondary plant used a 54 x 24-in. double-roll unit for secondary reduction, and a double 4-x 12-ft. vibrating screen deck for sizing. This two-unit plant was sent to the Ohio Turnpike during the construction season of 1955. Thomas moved it 1000 miles to set up in Kansas during the winter of 1955-56.
Kansas rock is considerably different from that in Ohio. It is softer, has more moisture content, and is solid limestone. In Ohio, alluvial gravels were found in many places. It is necessary to crush and size every single piece of Kansas limestone. For this reason, the ultimate in crushing and screening flexibility was suggested in the form of a Pioneer 120JSE Intermediate plant. This was purchased and placed in the line between the main
primary and secondary components.
ROCK PRODUCTS, November
According to Thomas, this intermediate plant has one of the best designed, shockproof vibrating screens he has seen as a production model off the assembly line. Because heavy input and shock loads were such a factor on the Kansas Turnpike limestone, the plant was equipped with Mesabi- type screens with spring suspension mounting rather than rigid frame mounting. Th tem of this unit has handled the entire input with- Lo ae velop.
creen 8YS8-
out permitting frame stresses or breal The spring mounting has been hig! effective, The old has been combined here with the new. The 120JSE intermediate plant was equipped with a 15-x 36 in. Pioneer jaw crusher which McKinney had used more than 20 years ago. Also, a stacker with the
intermediate plant was one that Thomas first used
conveyor connecting the 153PRL primary
over two decades ago
“Rock crushing equipment is like a fishing line,” Thomas said, “It’s not the fish that breaks the line. It’s the fisherman. Pay attention to the stress
points on a rock plant and yout one production
line won't break, either.”’
Efficiency in mining is the watchword at the Udall plant. Only three drillers are being used to handle the entire explosives job ahead of a 2's cu. yd. power shovel. They found that one auger type drill rig would sink 4-in. diameter holes at 3 f.p.m. So, just one machine has replaced two and three wagon drills used on some of the other con tracts. The three-man crew includes a driller, his helper, and a powderman. Holes drilled during the day are loaded in late afternoon. They're shot that evening after the plant shuts down. Input of bro ken material is handled by a 2!4-cu. yd, shovel and four Dumptors.
The 6-x 14-ft. staggered drill hol
reduced secondary breakage to an absolute mini
pacing has
mum, and the 30-x 42-in. jaw crusher in the pri mary is handling the same material the 2!4-cu, yd shovel loads.
Grizzly area was increased to ab two feet of usable space. This wa aone pb hi ne the pri mary jaw ahead and leaving the pron feeder where it was. It’s been importa iuse late winter and spring crushing has ss ome wet ma terial. Thomas has arranged hi hooting so that several days’ supply is out ahead at time Phe broken material can di omew! j ain vind drying always gives the prima rusher an extra productive edge
The 30-x 42-in. Pioneer crushe lriven by a 175-hp. diesel, and only the 5-in. plu raction got through the jaws. A 5-in. griz lrops and by passes the finer material under t) peed of the loading conveyor connecting t) init to the intermediate plant has been raised 235 percent over normal, to get the broken mate! it quickly
Please furn to page 78
19556 69
New Lightweight Aggregate
How Trulite Ils Made From Coal Refuse
On Updraft Traveling-Grate Stoker
NEW MANUFACTURED LIGHTWEIGHT AG-
GREGATE which is lighter than coal cind-
ers has recently been developed by Trulite
Corp., Ceredo, W. Va. Trade-named Tru- lite, the products weigh only 1250 lb. per cu. yd.; and concrete block (8-in. equivalents) made with the aggregate weigh only 26 lb., yet test over 1000 p.s.i. The product is made through a unique pro- cess developed by C. N. Howard, company presi- dent, in cooperation with the Bureau of Mines. The process involves burning coal refuse on a 10- x 35- ft. traveling grate stoker at 2500 deg. F., after which the resulting cinder cake is cooled, crushed, and sized prior to shipment.
The plant is located along the Ohio River adja- cent to the modern coal preparation plant of Tru- ax-Traer Corp.; the property is leased from the coal firm. Raw material is reclaimed from a large settling basin containing more than 1,500,000 tons of coal washery refuse (called “gob’’), which has been accumulating since 1948. This material con- tains 45 percent combustibles (half of which is carbon, half volatiles) and 55 percent shale and clay, roof slate, etc. Due to its high carbon con- tent, the material is free-burning; and in this sense the Trulite process is contrasted to burning clay or shale on sintering machines, where about 10 percent coal is added to the feed to effect com- plete sintering.
ROCK PRODUC
By KENNETH A. CUTSCHICK
Investigation to find uses for this washe refuse was initiated by Truax-Traer several yea ago, with Mr. Howard, then plant engineer for the company, assigned to the project. Initial experi mentation carried on by the company involved rotary kilns and down-draft sintering machine Later, research was conducted at the Combustion Research Station of the Bureau of Mines in Pitt burgh, Penn., using updraft travelling grate stok ers. The latter process proved to be the most suc cessful for this type of material. Late in 1954 Mr Howard formed the Trulite firm, and a 3 t.p.h plant was constructed and placed in operation dur ing the summer of 1955, producing 22,000 tons per year. Presently the company is increasing output by 12 t.p.h. through installation of a 26- x 35-ft stoker and related equipment. The cost of building the initial plant was $150,000.
Many automatic features are incorporated in the Trulite plant, making one-man operation a pos sibility (a crane operator and a clean up man ar: also required for truck or car loading, etc.) Re covery of material from the settling basin by means of a slackline excavator having both manual! and completely automatic controls. Plant facilitic are compactly arranged, with controls for ope: ating the excavator, conveyors, screens, crusher pelletizer, dryer, stoker, and fans centralized on a
‘TS. November, 1956
panel board. The control room also contains num erous instruments and recording devices used to govern operations. Of major importance is a 16 point strip chart recorder for indicating tempera tures throughout the stoker and ancillary equip- ment. Other features concern the use of dual fluid motors to drive the stoker grates and variable speed drives for some of the major equipment.
In the pit operation, coal refuse is reclaimed from the settling basin by a 1!.-cu. yd, Sauerman shifting crescent drag scraper powered by a thre« drum hoist. Material is recovered near the receiv ing end of the basin, where the deposit is 45 ft. thick (at the far end it thins to only 15 ft.). The drag scraper operation is two-stage, involving first the transfer of the (moist) material about 300 ft. to a drying area, followed by delivery of the (air-dried) material about 500 ft. to a surge pile, under which is a reclaiming hopper and tunnel belt conveyor feeding the plant. The first operation is controlled manually from a station flanking the storage pile. Through use of a rapid shifting bridal system, the operator can reclaim material] over a span of 300 ft. (which is the spacing of the
ROCK PRODU(C
Clinker cake dr
TS, November, 1956
Trulite plant, taken before drying chamber for raw pellets was installed. Stoker is housed in steel building
guyed bridal towers) and deliver it to the central drying point. The second operation, which i: inhaul and backhaul movements only (no ing), is entirely automatic, the crescent being controlled by push button from the plant control console. The start button | once, and recycling occurs automatical! Automatic operation is made possible sets of geared limit switches mounted o1 the inhaul and backhaul drum hoists. (Th or shifting drum hoist does not requir switches, due to manual operation.) On limit switches controls the scraper movem« drying area to surge pile; the second set, a a safety device should the first set fail, | the scraper from being pulled into th mounted at the central guyed mast at charge end or against the bridal frame an at the reclaiming end. Westinghouse Rot bers are used to operate the drum clutch:
In the plant operation, coal refuse is pu
Close-up of 1 a-cu. yd. drag scraper bucket bring ing air-dried coal washery refuse to surge pile and pelletized, and the pellets are dried a:
to 4y- x \4-in. before being fed to the tra grate stoker. The material is first reclaimed the steel hopper under the surge pile by a
table feeder, and delivered to the crushe:
ROCK PRODUCTS, November, 1956
liams No. 215 reversible impactor—by an inclined 14-in. belt conveyor, 115-ft. centers. The table feeder has a Reeves vari-speed drive which is con- trolled from the central push button station. Both the reclaiming conveyor and hopper are housed in Armco corrugated steel liner—a 6-ft. dia. sec- tion serving the former and a 10-ft. dia. section, standing on end, housing the hopper. A Homer perma-magnetic head pulley on the primary con- veyor removes tramp iron. The impactor, driven at 1800 r.p.m. by a 30-hp. motor, reduces the coal refuse to 80 percent passing ' in., which is then fed by drag chain conveyor to a 4- x 15-ft. drum pelletizer.
The material pelletizes readily with the addition of 10-12 percent water. The pelletizer, driven at 10-30 r.p.m. by a 7!.-hp. motor through a Reeves vari-speed drive, is rubber-lined to keep the ma- terial from sticking. The lining consists of longi- tudinal strips of '%-in. rubber gasket material held in place between strips of '4- x 2-in. steel.
After pelletizing, the material drops to a hop- per, from which it is carried on a 24-in. variable- speed Cambridge woven wire belt conveyor, 22-ft. centers, through a drying chamber. The purpose of drying is to harden the pellets so they can be later sized on a vibrating screen. The dryer con- sists of a preheating section and a drying section, with temperatures in each section running 200 and 800 deg. F., respectively. Heating is necessarily gradual so that the pellets will not explode. Hot air for drying is supplied through a duct from the stoker by means of a 10-hp., 10,000 c.f.m. fan mounted at the discharge end of the dryer; the air is tempered with cold air to maintain an opti- mum drying temperature. A steel stack exhausts gases from the preheater section.
The dried pellets are sized to 4%- x '%-in. on a 3- x 6-ft. Allis-Chalmers Aero-Vibe double-deck screen, with oversize and undersize particles being recircuited by a 14-in. belt conveyor to the im- pactor. The stoker is fed from a surge hopper by a 14-in. belt conveyor, 16-ft. centers, which is swung through a small are to distribute the pellets evenly across the stoker width. The conveyor, mounted on casters, is pivoted automatically by means of a double-thread bar.
The stoker is the Coxe travelling grate type, manufactured by Combustion Engineering, Inc.; it was made by combining two 17!4-ft. grates to make a 10- x 35-ft. unit. The grate assembly is driven at both head and tail shafts through double worm gears, the prime mover at each shaft being a Dennison TMB-12 hydraulic motor. The two mo- tors in turn are driven by an oil pump having a 5 hp. variable speed drive. This type of drive was chosen to divide the power load to each drive shaft equal- ly. The speed of the grates can be varied from 0-1 f.p.m. by controlling oil flow with a throttle valve.
ROCK PRODUCTS, November,
Concrete stave silos and rim grinder being under current expansion program which w crease capacity by !2 t.p.h. Clinker stock, } conveyor is in foreground
The ignition hood, specially designed by A. P. Green Fire Brick Co., has a 9-in. monolithic lining of Green Super Hybond, which is a special plastic refractory made from superduty fire clay. To start the burning operation the ignition hood tempera ture is first brought up to 1600 deg. Fk. by means of a wood fire and an oil torch directed on the re- fractory lining. At this temperature the pellets self-sintering from then
are fed, and the process is on, the firing temperature being 2500 deg. F. The clinker bed varies from 6-8 in., the thickness being varied by a ratchet-operated adjustable gate, In its travel over the length of the stoker, the charge is burned progressivley downward, until at the dis
charge end, it is completely burned to form a fused clinker cake. Progressive burning is effected by a 40,000 c.f.m. fan (40-hp. drive) which supplies air through six windboxes, the air being blown up through the stoker bed. At each windbox there is a manually-operated damper to control air pre:
sure and temperature. Gases are exhausted to atmosphere through a rectangular stack lined with
insulating fire brick. To insure quality control and attain burning
efficiency, temperatures are taken at various
stages in the burning operation and recorded on
a Brown 16-point strip chart recorder mounted in
the control room. These include the ignition arch,
six locations along the stoker, the stack, inlet and
outlet of dryer, and furnace fan. Other measur
ing devices mounted at the contro! panel include
recording tachometers for the stoker grate and
Please turn fo page 120
1956
This Plant Cut Non-Spec To 2% in Products
HMS Process Reduces Objectionable
Material from 15 Percent. Result—More Salable Products
ROCK PRODUCTS, November, 1956
Ray C. Killins, president secretary-treasurer
Overall view of plant st ground, heavy media un
the rear, and to the left
By GEORGE SCHENCK
Gravel
EAVY MEDIA SEPARATION at Killins Gravel Co., H means more salable products for the companys and better concrete in the Ann Arbor, Mich. area in the products ha been reduced to 2 percent from a previous average of 10 percent. This means that all coarse concrete aggregate (sink) now exceeds in quality the most rigid state specifications. The which is floated off by the dense medium of the process, is marketed for use where its poor weath
Undesirable stone finished
undesirable stone,
ering characteristics are unimportant. The company was founded in 1918, when a dry screened product was marketed; in 1920 the plant
ROCK PRODU(
(right), and David A Killins Hl,
fore plont
owing stacker conveyor in it and sand and grovel t
the ready-mixed concrete plant
was converted to wet washing Through the years Ray Killin
pace with the best practices
creening. ident, kept in sand and gravel production. Realizing the vast potential of ready- a product in 1948,
now produced in season.
mixed concrete, it was added as Some 700 cu. yd. per day i
The sand and gravel deposits in southern Mich- igan are glacial in origin and contain a relatively high percentage of chert, shale, and sandstone (Rock PRopucTs, August, 1956, p These materials are weak and tend to absorb moisture.
175)
The absorbed moisture causes expansion on freez
ing, often resulting in spalling of concrete if sig nificant amounts of deleterious material are inelud
ed in the aggregate. This undesirable stone is less
lower f
than sound
dense—has a specific
Mravi stone. Heavy media separation take this float stone,
antage of
characteristic and off the unwanted
Several pits are operated with production from of
ing peak seasons about 2000 tons |
them balanced to meet the need the plant. Dur
of sand and gravel are dug. Coarse feed produced at the Scio pit, where a Marion draglin«
da
oad
pit run to a grizzly surge bin. A Telsmith reciprocating feed
er discharges material onto a string of three Bar if
ber-Greene portable conveyor be e
TS, November, 1956
of
Heavy media drum seporator followed by 6- x !6-ft vibrating screen with a divider plate to separate sink
and floot { roducts
Spiral densifier and magnetic drum separator used in cleaning and dewatering media
the dragline freedom in loading in any s« the pit. A permanent belt conveyor complet series that lifts pit run material to a tv vibrating screen 55 ft. above the surge screen first scalps off all plus 2-in. stone to more efficient screening of the smalle: Plus '.-in. gravel is combined with the p gravel in a 45-ton Butler bin. A similar bin r the minus '4-in. sand that is stockpiled b for future use. Plus \4-in. is trucked, by a « hauler, five miles to the plant.
A pit near the plant contains a high per: of well-graded sand that is loaded direct trucks for delivery to the plant. Some mate: obtained from the Seyler pit, about tw
distant. All pits are operated by Killins Gra
even though they don’t own Scio and Seyle: Uniform feed to the plant is maintained lective dumping of trucks into a 25-to1 hopper at the plant. The crushing circuit ard, using gyratory crushers to reduce
After crushing, feed is split and wate) immediately in front of two revolving wet that wash and size the gravel. All washed
i a
FENE RADIA aa, ma) liad.
Flowsheet of operations in pit, sand ond grave! plant, and heavy media separ
in. material goes to the HMS circuit along with most of the minus '4- x '4-in. material. Some of this smaller size is screened on a 3- x 6-ft. Sim- plicity unit to produce pea and birds-eye gravel. Wash water from the revolving screens is carried by a launder to tanks where concrete sand and mason’s sand settle.
Water for the plant comes from a company owned 15 acre lake, pumped by a 175-hp. 1500 g.p.m., centrifugal unit. Fines in the washing cir- cuit feed are 17 percent through 50 mesh and 2 percent through 100 mesh
The Wemco heavy-media separation plant is a package - type prefabricated unit called Wemco Mobil Mill. It comes equipped with all necessary assemblies and is capable of cleaning 1200 tons
per 8 hour day. The operator said that approxi
mate start-up and shut-down time each day amounted to 30-min. and 15-min., respectively. The
ROCK PRODU(
plant operates at a specific gra 0.02
Since fines in the HMS circuit n increase medium loss, HMS feed is re-ser
14-ft. Simplicity screen with '4
The plus '4-in. gravel then go
drum separator, which revolve
terial flow through the di
onds, during which time arat Pe riodic checks on specific g de by the operator. It takes about make each check. He weighs a sar
direct-reading Marcy al ple
pulp on a taken near the drum sep: media re claiming screen If the specific gravit belo esired range the operator may lower the d and in crease the amount media return tank. Or, he may add n m stoc pile directly into the medi: t Che first
TS, November, 1956
S ‘a se ae
Newest component the intermediate plant which combines a screening
Kansas Turnpike
Continued from page 69 At the intermediate plant, a 4-x &-ft
type two-deck vibrating screen takes input on a top deck equipped with 5-in. m screen also has a 2-in. bottom screen de tained material on the top scalping dec! through to the 1536 jaw crusher, then t veyor feeding the 154-VE secondary. Mat tained on the 2-in. mesh joins the 15 crusher throughs. Because of a 3! 5-in. jaw to take care of flat and long rock frag: throughs are ground fairly fine. Materia the 2-in. mesh in the intermediate unit p: the sand screen. From there, it goes to belt leading to the 21 cu. yd. Pioneer surge | where trucks take their loads. The sand reversed on this intermediate unit, so that material flow would be out of one side of t} Chis leaves only the 1536 throughs and t! tion retained on the bottom deck of mediate plant to be crushed and screenes terial passes over a 36-in. feed conv: 5424 double-roll unit on the 154-V] plant. This plant also has an efficient
* toll system. It consists of a 4-x 12-ft. ad
creen, each deck using 2-in. mesh. Mat
Overall view of plant from ti urge bin end show “s
{ ‘egulated | sing i é ustabi that plenty fa ‘ } ‘ round each unit can rey ila yu Ing an udu .
split the feed evenly over both decks. T} are arranged in closed circuit with th crushet
A field change was made to the legs ol bin to give better clearance, At present
Please turr
ROCK PRODUCTS, November, i956
2590-300 TONS HOURLY
of %” or 1% —crushing hard and abrasive trap rock
wt TE LSM ITH
EQUIPMENT
in the plant of NELLO L. TEER
wned and
@ This quarry plant, at Savage, Maryland
operated by Nello L. Teer, of Durham, Nortl Crushing hard and
Carolina, a
e) 5-ft, » 12-ft Heavy-Duty Scalper; bov Bow! Gyraspheres long-time user of Telsmith in other plants
(a 8-FC Coarse
489-5 ond 4 ystly ised for
shracivea ¢ ck, th lant edict in wn (below) 5.4. x 12-ft. Vibro-King Screen; P ‘iets tian pail sear - 48-FC Medium Bow! Gyrasphere Crusher
black top. When producing minus 1'/2'' material, average capacity has been between 270 d 320 tons
per hour; producing minus %"’, the average
is 240 to 270 tons per hour
Send For Bulletin 266
TELSMITH Equipment in this Plant: 42” x 14’ Heavy-Duty Apron Feeder (top right) * 36” « 6’ Plate Feeder (under surge pile) * 489-S Gyrasphere Crusher © 5’ x 12’ 2-deck Heavy-Duty Scalper * 48-FC Coane Bow! Gyrasphere Crusher * 5’ x 12° 3-deck Vibro-King Screen * 48-FC Medium Bow! Gyrasphere Crusher * Five conveyors—three 30”, Gne 24” and one 18” wide.
Q-33
SMITH ENGINEERING WORKS
508 E. CAPITOL DRIVE MILWAUKEE 1, WISCONSIN Representatives in Principal Cities in All Parts of the World . Cable Address: Senqworks, Milweukes Enter 1028 on Reader Card 79
ROCK PRODUCTS, November, 1956
inSLSLNILNI
=
D\/ 250 TON
PER HOUR SAND AND GRAVEL
PLANT for Otisvilie Sand & Grave! Co.
creens and conveyors.
Send for Bulletin describing KVS Machinery and Equipment
KENWEDY-VAN SAUN
MANUFACTURING & ENGINEERING CORPORATION TWO PARK AVENUE, NEW YORK, N.Y. © FACTORY: DANVILLE, PA
ecipfocating plate feeder and 30” x 4 iw Crusher
Modern KVS, High-Capacity Machinery and Equipment Produces Uniform, Graded Products at a
Rated Capacity of 250 Tons Per Hour.
OTISVILLE SAND & GRAVEL CHOSE KENNEDY EQUIPMENT ON A BASIS OF PROVEN PERFORMANCE !
KENNEDY PRODUCTS
Gyratory Crushers @ Coolers, Dryers @ Steam Generators Swing Jaw Crushers Preheaters, Deheaters
Tube Mills Belts, Conveyors Asbestos Plants
Ball & Rod Mills Pneumatic Transport Complete Lime Plants Vibrating Screens Systems Complete Cement Rock Feeders Waste Heat Boilers Plants
Air Swept Tube Mills Pulverized Coal Complete Aggregate Rotary Kilns Firing Systems Processing Plants
Primary Crusher and feed hopper arrang:
plant, Otisville Sand & Gravel Co
Celotex
Continued from page 65
Above: Hig ide roller mill and exhaust fan which fraow yround gypsum through whizzer separator
The new Ehrsam kettle is a steel-jacketed unit holding 15 tons and is fed by a twin screw con- veyor. It is lined with a combination of refractory brick and monolithic refractory castables, and has a gas-fired Webster burner with Minneapolis- Honeywell controls. After calcining, the stucco is dumped to a hot pit at 340 deg. F. During calcining the material is agitated by a conventional paddle which is driven at 20 r.p.m. by a 25-hp. motor. A steel bin is provided to drain partly-calcined ma- terial from the kettle during emergency; this ma- terial is returned to the kettle by a screw conveyor. The hot pit is hopper-bottomed and is drained through four gates to a screw conveyor.
Stucco goes direct to the wallboard plant or may be tube-milled for use in hardwall plasters. For the latter, two 6- x 15-ft. tube mills with 200- hp. drives are used,
The conveying system in the new mill building consists of three bucket elevators and several en- closed screw conveyors. The elevators and main
screw conveyors are mounted side by side for in- terchangeability. Two of the elevators handle stuc- co from the two mill buildings, transferring the products to screw conveyors serving the tube mills or the wallboard plant. The third elevator handles tubed stucco. The conveying system is vented by
a cyclone dust collector.
Individual 24-in. conveyors, 258-ft. centers, are used to transfer the stucco and tubed stucco from the screw conveying system in the new mill build ing to the respective bins in the wall board and packing plant. A totally enclosed 30- x 60-in. Rote» screener ahead of the stucco conveyor serves to scalp tramp metal from the feed.
In the wallboard plant a master-mixer screw conveyor is used to feed the Ehrsam pin mixe1 ahead of the wallboard machine. Principal! ingré dients include stucco, starch, fiber, potash, ground gypsum block, with perlite and glass fiber being optional. Proportioning is done on a volumetri basis, although materials are weighed regul: for quality control. Individual feeders are drive: by Reeves or U. S. variable speed drives and sy! chronized with the belt speed of the wallboa machine
Stucco is delivered from three 300-to1 the master conveyor in the following manne: reversible drag chain feeders serve each feeder discharging to one of two parall conveyors. Each screw in turn discharg: bucket elevator, which feeds a constant head over the master conveyor. Overflow is returned to the stucco bins. Fiber is produced in two vai iable-speed Buffalo hammermills which is fed fron rolls by variable-speed feeders. Each hammern circuit incorporates a fan and cyclone colle« the shredded pulp dropping to a bin over the ter conveyor. A gypsum block grinder, also variable speed drive, supplies pulverized ma which along with potash, serves as an accel
The pin mixer consists of a primar where water is added and a secondary where foam is added to lighten the board. Th: preparation circuit includes a mixing tanh feeder, and a foam generator. Slurry is discha from the pin mixer to the board machine
After passing through the forming rol! wallboard machine, the wallboard (or lath) carried on a 57-in. x 245-ft. forming belt. Edger bars and ironing plates are located at severa points along the belt to produce even and uniforn surfaces and edges. Following the first belt a second 245-ft. setting belt which in turn lowed by a 90-ft. section of individually d: bronze rollers. These carry the board unde: Ehrsam lath punch and an Ehrsam cut-off the latter automatically perforates and cut board at predetermined lengths.
Between the live roll section and the Coe drye: there is an accelerating roller section; a transfer table, the latter incorporating Turner arms fo: turning the board over to put the finish side up for travel through the dryer; and a return rol! se tion. Feed to the 8-deck dryer feeder stage is b
Please turn to page 86
82 ROCK PRODUCTS, November, 1956
For long, trouble-free service...
use hose
AIR: extra lightweight, highly flexible hos
work. Resists weather damage and abrasion. Non of oil resistant rubber compound. Rugged N Ideal for almost any hose installation
FIRE Resilient, flat-folding hose sa ' 1 vive
long service in interior fire protection. Highly flexil ind r¢ sistant to cracking. Leak-proof tube bonded | jacket cover. Recommended for institution
STEAM Many times stronger than wrapped fabric hose for general steam-handling jobs, Also lighter, more flexible and kinkproof for easier handling. Steel wire and glass rein forcing insures extra safety. Resists high pressures up to 388° F
WELCING No twisted, tangled line Iwo lines are
securely bonded together to form a single, safe hose unit. Kink free and resistant to welding gases. Stands up to lots of drag ging across rough surfaces. Especially effective on portable welding dollies.
WATER For long wear and outstanding ilu {his
easy-to-handie hose has what you need. Reinforced with mul tiple plies of high tensile yarn, it takes higher than usual work ing pressures. Cover stands up to weather extremes without cracking or peeling
Save time and money, Call your Quaker-Quaker Pio neer distributor first, when you need hose or other industrial rubber products. You'll find him prompt dependable.
H. K. PORTER COMPANY, INC.
QUAKER RUBBER DIVISION Philadelphia 24, Pa.
QUAKER PIONEER RUBBER DIVISION Pittsburg, Calif.
Enter 1029 on Reader Card
ROCK PRODUCTS, November, 1956
FIRST
R Ni,
A O ~
NEW COMFORT CABS Industry’s largest, for real stretch-out comfort. All-new seat Gesign permits adjustment of back cushion and seat height plus normal slide positioning
FULL-OPENING HOOD Exclusive!—Can be raised full 90° for easiest, fastest engine servicing, half-way for routine oil and water checks.
Stake models up to 21,000 ibs. G.V.W
ROCK PRODUCTS, November, 1956
Dowe
e NEW giant-power V-8 engines! e NEW higher load capacities!
Get set to profit from a great new kind of truck with more V-8 power and more payload capacity- with more eager-to-go snap than any other make on the road!
From 204-hp. pick-ups to 232-hp. tandems, today’s new low-priced V-8 Dodge Power Giants deliver more truck per dollar—and more profitable pay loads—in every weight class, 4,250 lbs. G.V.W. to 65,000 Ibs. G.C.W
New short-stroke Chrysler-engineered V-8's— with exclusive Power-Dome combustion— give you more miles per gallon, full power on regular gas. Increased power in famous, dependable Dodge 6's, too.
Tandem models up
4 pick-up models to 46,000 ibs. G.V.W
up to 6,800 ibs. G.V.W
ROCK PRODUCTS, November
A
Giants
e NEW push-button driving! e NEW Forward Look Styling!
Push-button automatic transmission is stil! snother great plus you get only in new Dodge Power Giants First in any truck! Simple, sure, trouble-free. Just
push a button, shifting is automatic
*
Test-drive a Power Giant—V-8 or 6—soon! Cet your Dodge dealer's deal before you decide on your new truck
Available on low-tonr
DODGE TRUCKS
WITH THE FORWARD LOOK _ a
4
Tractor models up 4-wheel-drive mode to 66,000 ibe. G.CW up te 18,000 ite. G A
Enter 1031 on Reader Card
1956
Celotex
Continued from page 82
Four-tube pocker for plaster. Four |50-ton bins serve packing plant; two of which are for tubed stucco, one for stucco, and one for gauging and molding plasters
Right: The 8-deck wallboard dryer is 350 ft. long divided into tour zone each zone being served by two gos burners and two fans for circulating air
means of a Coe tipple. The 8-deck Coe dryer is is placed. When it reaches floor level, the pall 350 ft. long and divided into four zones. Each zone complete. A fleet of ten lift trucks are used is served by two Maxon Series 600 gas burners and warehouse operation and in loading truck two Buffalo fans for circulating air counterflow rail cars. These include six forklifts, three hi through the dryer. One of the burners operates lift tongue trucks, and one lowlift tongue truc} constantly, while the second is controlled auto- The wallboard plant also has a large pack matically by a thermostat. Brown temperature department, where all types of plaster are n recorders and indicators are available for each and bagged. Key facilities include two Eh: zone. Temperatures vary from 450 to 200 deg. F., paddle-type mixers, each mounted over a 4 from front to back. The dryer evaporates 1050 Ib. St. Regis bagging machine. Fach packer hi: of water per 1000 lin, ft. of '4-in. board, or 780 Ib. pacity of 20 t.p.h. for %-in. board. Movement of board through the Four 150-ton bins serve the packing pla dryer is ;y as fast as the board line travels. of which are used for tubed stucco, one fo
At the unloading end of the dryer there is a and one for gauging and molding plaste: cascade roller section that delivers the board from two latter products are made at the plant b any deck to a breaker. From this unit, the gypsum ing stucco to a 14-ft. Raymond air separat: lath goes to a Brackett lath bundling machine tailings representing ga. zing plaster (aft where several pieces are fastened with adhesive tarder is added), the fines, molding plaster paper bearing the Celotex insignia. Before the In the mixing operation, stucco is delive: wallboard goes to the Mereen-Johnson bundler, it screw conveyors to a one-ton weigh hoppe1 is transferred to Turner arms so that finished sur- Fairbanks-Morse scale, which is mounted faces are turned in. In addition the end edges are each paddle mixer. (Actually two para trimmed to exact dimensions by circular saws. veyors serve the four bins, with a screw After bundling, the wallboard is placed on a from each serving one of the weigh h Rotary Lift Co. Levelator, which is used in making Retarder and other ingredients are weigh: up large pallets for handling by lift trucks. With small beam scale and dumped into the hopp«
this device the platform lowers after each bundle Please turn te
86 ROCK PRODUCTS, November, 1956
“Stress raisers” eliminated by Link-Belt LXS chain design
‘is 4 Large pins, bushings mean ample LXS “FULL-ROUND” DESIGN live bearing area for long life
For long life under severe carefully machined for proper
conveyor and drive condi pitch hole size and for main
tions, Link-Belt LXS chain taining firm, tight press fit of
bs provides extra strength, in pins and bushir This assures control f pitch and
creased wear resistance and close wider application flexibility proper This fabricated steel roller embly chain incorporates many ad vanced design and manufac turing refinements, resulting in Another Link-Belt long-life superior ruggedness and a anten 16 thes ed fandom “Full-round” pin Curae? >. : ing of ! steels used in Eliminate weak points the manufact of LXS chain
a “Full-round” design does away Pir for i ‘ ire made j with stress concentration point from f t pecially most frequently subject to reat for high strength in
failure . provides maximum ' im weal live bearing area between pir bushing and sidebars. As a r a sult, stress is distributed even “FULL-ROUND" DESIGN eliminates stress concen ly, increasing chain life itely me tration points. Heat treatment of all parts adds even Pins and bushings are ac ined to proper oper life to selected curately sized for controlled iting ¢ nd free-roll press fit, preventing rotation ing act trolled harden
in sidebars. Made from s¢ ary lected bar steel, sidebars are
“Full-round” pitch holes ! length after as no sharp corners Hardening extends life
“Full-round"’ bushing properly
off shock
greater strength and extra wea! steels. Accurate control of these processes avoids brittleness, poor wear values and low tensile strengths and assures uniformity
LXS especially popular for exposed drives, high impacts
LXS chain provides extra strength, wear-life for heav \ dut < ying
Link-Belt LXS chain has real hment sf , fu lose stamina—as shown in thi tip] trand
conveyor application for han Ided strength dling 1000-pound, 40-foot rd wv fe { the extra-long lengths of steel pipe. Thank f lar in to
to accuracy of pitch and hanization
Link-Belt LXS chain is the
long-life answer for exposed frives, abrasive ; vh-i HEADQUARTERS drives, abrasive and high-im FOR CHAINS pact conditions. Its large, live SPROCKETS bearing area reduces cutting s your nearby ; Link-Belt factory ction of abrasives because branch store of load is spread over a broad authorized stock z rea afrying distribu —_ area. tor. Write for 342 page Catalog 950 CHAINS AND SPROCKETS LINK-BELT COMPANY: Fxecutive Offices, Prudential Plaza, Chicago !. To Serve Ind oo Link-Bele Planes, Sales Offices, Stock Carrying Factory Branch Stores and Distributor n A Principal Cities. Export Office, New York 7; Canada, Scarboro (Toronto | Australia. M ‘ NI ¢ Ww South Africa, Springs. Representatives Throughout the World
Enter 1032 on Reader Card
ROCK PRODUCTS, November, 1956 87
Overall view of new plont To the left may tank and in the center
ary end tower
By MARION L. BRIGGS
Synthetic Silicates
from Diatomite and Lime
MICRO-CEL or side of a hill, it is rer
-». #ynthetics made in Johns-Manville Corporation's new Model D-8 Caterpillar bulld plant at Lompoc, Calif., are widely used in dry cleaning, simply pushes it off over tl and for extenders in such products as paints, rubber, areas where it is not near th paper, fertilizers, and insecticides edge or a hill, a prong-lik attached to the front of th that loosens and breaks up | 4 Nhe LARGEST AND PUREST DIATOMITE ft. It is operated as a series of sep burden. A Model SBV Euc! perosir in the world is being put arate yet well integrated working quar pulled by an Allis-Chalm« to a new use at Lompoc, Calif. For ries that supply a wide variety of HD-19 tractor, follows, a the first time synthetic silicates, manu crudes, each having a uniform com overburden up the load factured from the diatomite, are being position for different products or fo belt, which dumps it onto produced by a new mill of Johns blending. For the new synthetic si! bottom -dump Euclid truck Manville Corp icate mill, what is termed a straight along at the side of the load The silicates are manufactured di “A” crude rock is used, as it is con After the ore strata hay rectly from processed diatomite re sidered the best grade ore for the posed, P & H electric sho acted with lime under high tempera plant's product in relation to tolerable 4%-cu. yd. or 2%2-cu. yd tures and pressures. Since 1928 Johns impurities dig the crude diatomite fron Manville has been quarrying crude and load it onto the 25-tor ore from the 15,000,000 - year - old In quarrying, the first step is to strip dump Euclid trucks marine diatom fossil beds to produce the top soil, or overburden, which The trucks carry the many powdered grades of diatomace runs from outcroppings to 5 or 6 ft about a 15-min. drive from ous earth under the name of Celite or more in some places. The layers of over an unpaved road cor The new synthetics, called Micro-Cel, diatomite have been twisted § and the new synthetic silicat heaved during land changes through rived at the back end ¢
are tailor-made for use as dry cleaning sweeteners, inert absorbents, bulking the centuries, so that at some points they dump the pieces of agents, or extenders in paint, etc the overburden is very shallow and at natural ground at 540-ft
The workable area of the Lompoc others deeper, and in some areas it At this end of the mill, t deposit extends over 3 to 4 sq. miles follows the contour of the hill about 100 ft. higher than
and reaches to a depth of about 700 Where the overburden is at the edge
88 ROCK PRODUCTS, November, 1956
OM Sile woroased. ij limes
b HARD-FACING
e and shale remain in and earth moving equipment hock and impact. I
Hammers used to crush limeston 70 weeks Now that they are protec ted with evere 8
Oper ition feor Unprotected hammers are hardens to Rockwell ¢
Hse KOMI high chromium rod 4) completely unservi eable after operating for only LO week
usual maintenance pro Hascrome rod an excellent
heavy impact, The abilit
under the same conditions The lure is to recondition the hammers with HascROME rod an excellent shock-proof ba have crushed approx resistant Haynes hard-facin
ul t every two weeks ilter the imately 13.000 tons. I i! | fic ing proved to be the economical solution to thi
or corrosion is the major See your local dealer { { severe impact and wear. Periodic re plete line of 18 Hayns
nical problem o will solve our ear p
sith INE X Pers ve Hascrome iron-base rod resulted work of seven. thus saving the location of vour dealer i Division of Union ¢
tect rock crushing Kokomo, Indiana
uilding me hammer doing the mt of six new hammers.
Has ROME rod is widely used to pr
Se... | Your local Haynes Stellite Dealer
ue Of ——
Write... | to Haynes Stellite Company
ade-marks of Union Carbide and Carbon Corgoratior Enter 1033 on Reader Card
ROCK PRODUCTS, November, 1956
which the plant itself stands, which is about 450-ft
After tour or five Euclid truck loads have come in with ore and spread it on
clevation
the ground, a bulldozer is run over the size than to go through the mill
material to crush it to smaller
as the pieces must be no larger 24- x 24-in Then the bulldozer pushes the crude over the side of the elevation, and it lands on top of a concrete tunnel con taining two “glery holes” opening into it. This fall helps to further break up the pieces of ore
The glory holes, through which the about 4-ft. by
concrete tunnel,
diatomite ore drops gravity into the approximately 4-ft. in diameter. In ternal dimensions of the tunnel 10-ft. wide 8-ft. high. It
24-in, thick concrete top, 12-in
are
are has a
thick
and
concrete walls, and a floor about 8-in thick
After falling through the glory holes the pieces of ore drop onto two 36-in wide reciprocating feeders, one locat ed under each hole. The feeders are
than 5-ft. long. A small
not more
hopper leading from each glory hole
directs the ore onto the feeders. From the ends of the reciprocating feeders the crude diatomite drops down 3-ft 430-in. belt conveyor, 100-ft centers. This belt, which is about 2-ft off the floor level of the concrete tun nel, carries the ore, now varying in size from dust to maximum 24- x 24 in. pieces, to the primary crusher
onto a
Primary and secondary crushers are located in an open structure 20- x 20 ft., and 40-ft. high. They are enclosed
Dry-End tower, to the top of which the product of the re acted lime and prox essed diatomite mix ture in powdered form is moved by pneumatic conveyor
system
ROCK PRODUCTS, November:
1956
Tunnel conveyor, ‘eft primary crusher crusher to t ‘ the throughs g
veyor to receive
and ventilated, as are the ing feeders and conveyor underground proc order to contain the siliceo
crude
so it will not spread out of the plant
Ihe primary crusher i roll type that reduces the larger crude pieces, and the reduces the material to After going through the spik roll of the primary crush falls by gravity directly int ondary crusher below
Ihe secondary onto a 24-in belt conveyor th
crusher
ports the ore uphill a distanc 90-ft. to the top of two crude bins. The elevating belt is in sheet metal housing to cont Since the two crude bins to each other, there shuttle from the
cent
matic receive the belt conveyor and load eithe:
con
reversible ore bins are circular in constru ered at the bottom, made of are 10-ft. in diameter and 40 Each bin discharges onto a automatic weigh-feeder that the amount of material fed to 18-ft center crude to
helt conveyor, veyor moves the screw conveyor, 6 ft. long
the ball mill
diameter ball $5,000 Ib. of
The 16-ft. charged with media of varying sizes for fu duction
goes through a vibrating screen
100-mesh cloth that remove
discharging them to waste. TI passing through the charged into a surge tank fron it is pumped by two operated by a level controller 20,000-gal. capacity redwood
screen
slurry
storage
From this mill, the ore
Du Pont NITRAMEX N® 3
AE SLOT IES es TR Bid
ELIMINATES HEADACHES, POLING, TAMPING IN LARGE WAGON-DRILL WORK
Comes in 2%", 3’ and 3'2”’ dia.—insensitive to caps, friction, shock —non-headache-producing
WHAT IT 1S —‘‘Nitramex”’ No. 3's a new blasting agent with the power of 60°; ammonia gelatin—PLUS safety advan- tages you don’t find in conventional explosives. It’s insensitive to caps, bullets, friction and impact of heavy weights. A powerful primer is needed to detonate it—and for maximum safety, only the special non-nitroglycerin “‘Nitramex’’ No. 3 Primer is used, Consider what this means in terms of safer loading—and handling misfired holes WHERE TO USE IT —“Nitramex’’ No. 3—designed only for OEM, FOR Chee rres RSTn : a
: 7 You can thread electric caps or and each end contains a handy large wagon-drill holes— performs best in hard-shooting for- Primacord through tunnel of coupling and lowering device mations— both wet and dry work. In wet work, you can load “Nitramex” No. 3 Primer. This which assures fast, efficient load one day and fire the next under depths of water up to 25’. dependable 2’’ x 6’’ primer _ ing into holes. (Device shown in
alone will detonate the shot photo above
WHY — Combined with Pelletol No. 1 it has a higher loading density than any conventional explosive—AND WITHOUT “"s TAMPING. This means more rock per foot of hole. It's ( easy to handle and load. Sinks rapidly in water, WITHOUT DU PONT POLING—and DOES NOT CAUSE HEADACHES. Thanks
to a special coupling bail, loading moves fast. BLASTI i G A GCG Fr NTS
OTHER “‘EXTRAS”‘— Use either the 2'4", 3” or 314” dia. **Nitramex’’ No. 3 fits the need. And it comes in sturdy 24”
fiberboard tubes with sealed metal ends that stand rough —_——_—_——__ handling and abrasion. T So for maximum safety and power in tough-shooting rock A —order “Nitramex"’ No. 3 and its Primer. Another Du Pont — “team” that will pay off for you! Call our man or write:
E. I. du Pont de Nemours & Co. (Inc.), Explosives Dept., BETTER THINGS FOR BETTER LIVING...THR HW CHEMISTRY Wilmington 98, Delaware. )
Products of Du Pont Research
Enter 1034 on Reader Card
ROCK PRODUCTS, November, 1956 91
The tank is elevated about 4-ft above the ground on concrete piers resting on a concrete base in order to allow a man to get under it to make repairs, and to prevent rotting. It is contained within the feed preparation unit described below.
In the feed preparation unit the dia tomaceous earth slurry from the red wood tank is prepared for further processing. Preceding this, quicklime stored in a 200-ton steel silo located outside the feed preparation unit is fed to a lime slaker, classifier and thickener; then from the thickener pumped to a 30,000-gal. capacity slaked lime slurry storage tank
rhe steel silo for storing quicklime and the slaking equipment is outdoors. The silo is about 400 to 600-ft. away from the railroad tracks that serve the plant and connect with the Southern Pacific line. Quicklime is transferred from the railroad cars to the silo by an Airveyor system
In the feed preparation unit, there are also the necessary pumps and mix- ing equipment, and two additional tanks for storing diatomite slurry, with a 10,000-gal. capacity each, and two additional slaked lime slurry stor- age tanks, each having a 10,000-gal. capacity, Each storage tank has its own mixer
Lime and processed diatomite, after they are mixed together, are reacted in an hydrothermal process which is automatically High tem perature and pressures are used. Con ditions of reaction can be varied to
controlled
produce a series of end-products of similar chemical but different physical compositions
Ihe reacted product is dewatered dried and pneumatically conveyed to the top of a “dry end” tower. Disper sion is accomplished in the flash-dry ing stage and in the pneumatic con veying system.
The “Dry End” tower is approxi mately 120-ft. high and covers an area of around 300 sq. ft. The product in powder form is conveyed by air to the top of the tower, where the larger particles are collected by a cyclone and the finer are removed from the air by a filter bag (dust coliector)
After leaving the filter bag house,
92
the clean air is discharged to atmos- phere by a vacuum fan. The fine powder drops by gravity into an air transport line to be carried to the product filter bag house
Meanwhile, the coarse particles of powder caught by the cyclone col lector are dropped by gravity from this collector to a micro that reduces them to fine powder. This fine powder then joins the fine powder coming from the filter bag collector and is blown along with it to the product filter bag house. Here, the powders are collected and the air is drawn out by fan to atmosphere. The fine powders proceed by gravity through an automatic sampler, which continuously removes a representative sample. This sample is dropped down to a table where collecting bottles hold it for quality testing.
The rest of the powder falls onto a distributing conveyor that permits it to drop into one of the three steel dry product storage bin pockets about 2000-cu, ft. While one bin is being filled, a second is waiting for results of sample testing, and a third is emptying.
pulverizer
each
If the sample powder taken shows the powder to be of acceptable quality it is discharged from the dry storage bin by a screw conveyor, located at the bottom of the bin pocket, to a cross screw conveyor which empties it into a plenum chamber on the back end of the bins. From this chamber it is distributed into three steel packer aerating columns approximately 20-ft high, that aerate the powder prepar atory to packing. Two manual packers are attached to the bottom of each packer column, and to these are ap plied 40 or 50-lb bags
Should the powder sample prove of unacceptable quality, the screw con veyor at the bottom of the dry prod
multi-wall paper
uct storage bin is reversed, and the powder is discharged to waste out the front of the bin pocket
After the bags of Micro-Cel powder are cleaned and palletized, the loaded pallets are stored in the new mill's warehouse. This warehouse covers an area of around 22,000 sq. ft., and is a steel frame structure covered with corrugated transite and flexboard
ROCK PRODUCTS, November:
1956
In strip mine operation, being pulled by tractor, cor cu. yd. of diatomite crude The truck moving alongside ed in 29 seconds. Note tt looder and truck cabs are
to prevent entrance of dust
All of the equipment an sible leakages of dust into th phere are well ventilated tection from dust is given ployes. The dust ventilating in the new plant can handk c.f.m. of dust-laden air using fan. Specially units developed by the compar search engineers have been inst heavy duty open-pit mining eq! used at the diatomite mine, i 10 bottom-dump trucks, five | graders, one
designed ver
ers, two road shovel and one diesel shovel tractor and one truck crane dozers have wholly enclosed vided with dust-free circulatis which also takes care of the problem. Dust counts in truck been reduced from as high million p.p.c.f On both bulldozers and truch falo Size C ventilation blowers 200 c.f.m., and similar blower: up to 2000 c.f.m. on the large To promote good housekeep entire pliant is covered by a cleaning system of standard with 40 hp. motor exhaust
to as little as
Kaiser Gets Safety Award KAISER Gypsum Co., IN¢ land, Calif
man-hour safety award for Calif., plant by li Indemnity Co. The commendati
was presented wood City
ognized the efforts of Kaisé dustrial Indemnity safety eng working com
tithe
provide safe the gypsum plant employee Gypsum Co recently re plaque from the Gypsum A for its exemplary record
Industrial Sand Study NATIONAL INDUSTRIAL SA
CIATION, Washington, D.<