Coal Age : devoted to the operating, technical and business problems of the coal-mining industry, Vol. 52, No. 2

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(1)V. ■. -. it t’ Mj. wM. GOAL--1946 AND THE FUTURE.

(2) SUN COMPRESSOR LUBRICANT... Keeps Compressors Operating Four Years on 2 4 -H o u r-a -D a y Schedule T w e n t y t h o u s a n d a n d t e n h o u r s of trouble-free operation were piled up by one unit in a big, industrial plant operating a battery of heavyduty 4 0 0 horsepow er compressors. There w as no time out except for routine inspections. Sun O il w as used from the very first hour these com pressors were installed. W h e n they were finally shut down for major overhauls, no w ear Was apparent and no major parts had to be replaced. S u n " J o b P r o v e d ” i n d u s t r i a l l u b r i c a n t s are m aking similar im pressive records in all kinds o f industrial plants, keeping production on an even, round-the-clock basis, holding down maintenance a nd operating costs. If you have problems concerning the lubrication o f compressors, pow er plants, machine tools or other industrial equipment — remember the Sun Engineer is at your service without obligation on your part. Just phone the nearest Sun office or write D e p t.C A -2 , . , S U N O IL C O M P A N Y S p o n s o r s o f th e. • P h ila d e lp h ia 3, Pa.. Sunoco New*-Voice of th e. A ir —. lowe ll. Th om as. ^S U N O C l» pB U Sjm iA L.

(3) If rides like a cloud— on B. F. Goodrich rubber springs A typical example o f B. F. Goodrich produ ct development. C. A L IF O R N IA bus rid e rs are n o w e n . jo y in g a n ew k in d o f v e lv e t-rid e c o m f o r t o n r u b b e r s p r in g s in th is tw o -sectio n " a rtic u la te d ” bus, alo n g w ith su ch lu x u ries as lav ato ries, e x tra s p a c io u s h e a d a n d le g ro o m , f o a m ru b b e r seats, an d scenery-level w in dow s. T h e m a n a g e r o f th e bus lin e says th is b ig 4 0 -p assen g er u n it rid e s b e tte r th an any o th e r m o to r v eh icle o n th e road. H e re ’s h o w it h a p p e n e d : Y ears ago, B. F. G o o d ric h en g in ee rs (w h o believe th a t anything can be im p ro v e d ) had fo u n d it p o ssib le to ab so rb shock a n d v ib ra tio n in fac tories by m o u n tin g heavy m a ch in es COAL AG E. •. February, 1947. on ru b b e r. W h y n o t try to d o th e sam e th in g fo r cars an d busses w ith a r u b b e r sp rin g ? T h e y d id — an d cam e u p w ith th e sp rin g th a t w ill add m o re to yo u r rid in g c o m fo rt th a n a n y th in g sin ce th e air-filled tire rep lac e d th e solid tire years ago. T h e sp rin g con sists o f a m eta l c y lin d e r filled w ith ru b b e r, w ith a sh a ft in th e c e n te r — w ith th e ru b b e r firm ly b o n d ed to b o th cy lin d e r a n d sh aft. T h e w e ig h t o f th e bus co n n ected to th e sh a ft m ak es it tu r n in sid e th e cy lin d er, g iv es a tw is tin g a c tio n to th e ru b b e r. B u m p s a n d ro a d shocks are sm o th e re d by th e tw is tin g ru b b e r before they reach th e bus fram e.. In a d d itio n to ru b b e r sp rin g s, th is n ew K aise r C oach is e q u ip p e d w ith a lo t o f o th e r B. F. G o o d ric h p ro d u c ts — tires, K o ro seal u p h o lste ry an d floor co v erin g , K o ro se a l an d m e ta l bellow s b etw een sections, a n d m a n y m o re; a few o f th e h u n d re d s o f B. F. G o o d rich d ev e lo p m e n ts th a t h a v e b ro u g h t increased c o m fo rt, safety a n d effi ciency to th e A m e ric a n p e o p le and A m eric a n in d u stry . T h e B .F. G ood. rich Com pany, In d u strial D ivision. A kron. Ohio. K o ro * *al. Products. -T ra d e M a r k , Resr. U . S . P a t. O ff.. 5.E Goodrich FIRST IN R U B B ER.

(4) .. F. i. r. s. t. i. n. i. t. s. F. i. e. l. d. .. .. .. a. r e. c o. Y es s ir - g o o d old PENNSYLVANIA took the le a d in the first N ation al C en sus, w ith a p o p ulation of 434,373—T en n essee bringin g up the rear w ith 35,891. Looks like a P h ilad el p h ia fam ily in the old print! E num erated a s of A u g u st 1st, 1790. the C en su s co vered 17 S tates, sh o w in g a TOTAL p op u la tio n of on ly 3,929,214. The la st C en su s (1940) sh o w s P en n sy lv a n ia sta n d in g SECOND a m o n g the S ta tes, w ith a p op u lation of 9,900,180 . . . a n d still grow ing!. HULBURT. OIL. & GREASE. CENSUS. Take another popular P en n sy lv a n ia (Phila delp h ia) product . . . HULBURT QUALITY GREASE. From the very b e g in n in g it h a s a lw a y s stood SECOND TO NONE in QUAL ITY a n d h en ce in its ab ility properly to lubri ca te C oal M ining M achinery. That's w h y its u se h a s grow n an d g r o w n ... and is still g row ing! QUALITY is the rea so n w h y HULBURT QUALITY GREASE w ill a lw a y s rank FIRST a m o n g co a l operators w h o d em an d the BEST w a y of lu b ricatin g their m ining m achinery.. C O M P A N Y — PHILADELPHIA,. B-jxeciaUiti in. Goal Mitte. JluMsUc<Uia*t.. PENNA.. o. f. . l. THE FIRST NATIONAL. r d. i. n. i. m. n. l e. a. d. e. r. s. h. i p.

(5) for SAFE...SURE MINE POWER that helps. KEEP PRODUCTION HIGH l u b b e r - f i l l e d cor« t a p e b i n d e r .. 0. Hazard S ubm arine insulation—. T in n ed c o p p e r co n d u cto rs. A r m o r .* H e a v y n o n - m e t a l i i c. m o ijtu re*re$istln g , e x tra-to u g h. A rm o r t it e t a p e s b e t w e e n l a y e rs. and. o f o s p h o I te d - fO T e t s l u s h e d with. r e s i l i e n t,. non-corrosive. a n d l o n g - a g i n g . Has h ig h d i . as p h b l i i c - b a s e plastic c o m p o u n d .. electric st r e n g t h . l u b b e r - f i l l e d t a p e over eo ch. 0. S p ira lw e a v e co v erin g .C lo se l o o m - w o v e n j a c k e t of h e a v y. insulated conductor.. co tto n , fire-hose ty p e , t h o r o u g h S a t u r a t e d fillers t o roundjptfut t h e co r e .. O. ly s a t u r a t e d w ith a s p h a l t u m c o m p o u n d , f la k e m i c a finish.. C u s to m -b u ilt to w ith s ta n d th e se v ere o p e r a tin g c o n d itio n s e n c o u n te re d in sid e m in e s, A r m o rtite a lso p ro v id e s sp e c ia l in s ta lla tio n a d v a n ta g e s.. cyC-'Ocated in the heart o f an im portant m in in g area, H azard has taken every advantage o f its op p ortu n ity to design and build m in in g cables that are "tailor-m ade” to m eet the requirem ents o f the industry. For exam ple, take H azard A rm ortite M ine Pow er Cable fo r inside p ow er transm ission and distribution. It’s n on -m etallic arm ored, m ois ture-proofed . . . can be laid directly in a trench w ith o u t conduit, run through pipe, or h u n g on m essenger or supports inside the m ine. H a v in g neither lead sheath or steel arm or w ires, it’s m ore sim ple to in stall and its lig h t w eig h t m akes h a n d lin g quick and easy. In m ore than tw enty years, there has never been a service failure caused by fau lty construction o f A rm ortite. C onsult H azard E ngineers as to the type o f cable to select for a specific ap p lication to assure/ m axim um efficiency and service life. H azard Insulated W ir e W ork s, D iv isio n o f T h e O k o n ite C om pany,. /I. W ilk es-B arre, P ennsylvania.. 4. February. 1947. ■ COAL AG E.

(6) CONTENTS FEBRUARY, 1947. V olum e 52. N u m b er 2. A lfre d M. S ta e h le , Publisher IVAN A . GIVEN. E dilor I. H. E d w a rd s. R. R. R ich a rt. W . H. M cN eal. W . A . S fa n b u ry Jr.. F.. A.. Z im m erli. Bitum inous P rogress In v o lv es Labor an d Cost P ro b lem s. . . . . .. H. H. M a th ia s, S a les M anager. 76. A nthracite Industry S tresses Efficiency an d R e sea r ch ................. 84. M ine S a fe ty Sets N ew Record in 1946........................... 87. D o n a ld D. H o g a te , W ashington. W o rld N e w s offices: L ondon, P a ris, Berlin, M o sco w , P ra g u e , S h a n g h a i, B o m b ay , M exico C ity.. v. B y FORREST T. MOYER. Loading, C lean in g Featured b y H e a v y Equipm ent P u r c h a s e s ... 89. B y W . H. YOUNG a n d R. L. ANDERSON. U n le v e le d Spoil Brings G ood Return a s Farm ing Project. 92. By / . H. EDWARDS. H igh Productivity G oal in M ain ten an ce at Kenilworth M in e . . . > HcCIAVHHU.. P U B U C A T iO H. C O A L A G E (w ith w h ic h is c o n s o lid a te d "T h e C o lliery E n g in e e r" a n d "M in es a n d M in e ra ls ” ) is p u b lish e d m o n th ly on th e 1st. A llow a t le a s t te n d a y s f o r c h a n g e of a d d re s s . S u b sc rip tio n r a t e s : U n ite d S ta te s a n d p o sse ssio n s, $5 f o r o n e y e a r , $8 f o r tw o y e a r s , $10 f o r th r e e y e a r s . C a n a d a , $G f o r o n e y e a r , $10 f o r tw o y e a r s , $12 fo r th r e e y e a r s . P a n A m e ric a n c o u n trie s, $6 f o r o n e y e a r , $10 f o r tw o y e a r s , $12 f o r th r e e y e a r s . A ll o th e r c o u n trie s , $15 f o r o n e y e a r, $20 f o r th re e y e a r s . S in g le co pies, 50 c e n ts each . E n te r e d a s seco n d c la s s m a tte r Oct. 14, 1936, a t th e P o s t OUlce a t A lb a n y , N. Y., u n d e r th e A c t o f M a rc h 3, 1879. P r in te d in th e U. S. A. C a b le A d d re s s : “ M c G ra w -H ill N. Y .” M em b e r A .B .P . M em b er A .B .C . P le a s e in d ic a te p o sitio n a n d c o m p a n y c o n n e c tio n on a ll su b s c rip tio n o rd e rs .. 98. T im bering M ach in es Cut Cost, Prom ote S a fety at I s a b e lla .. . . 102 By R. R. RICHART. Lower H a u la g e Cost Provided b y N ew H igh-Speed L ocom otives 106 By G . H. SHAPTER. B atteries Kept C harged in S toreroom ................................................ 114 H ose for B low ing H andier o n a R e e l.................................................... 114 Radiator C onverted to Unit H ea ter ....................................................... 116 A utom atic E xtinguishers In stalled in S u b sta tio n s......................... 116 W in g s a n d F ly G ates in S creen Chute A dd F lex ib ility ................ 118 Ties a n d P oles P refabricated for Trolley S u p p orts......................... 118 N ew M ethod D etects R eversed Arm ature C o ils.............................. 118. L eveler Boosts Unit Output 2,000 Tons Per M on th ......................... 120 lle tu r n. P o s ta g e G u a r a n te e d. C o n te n ts C o p y rig h t 1947 by M c G ra w -H ill P u b lis h in g Co., in c .: a ll r ig h ts re se rv e d JA M E S I t. M cG R A W F o u n d e r a n d H o n o r a ry C h a ir m a n JA M E S H . M cG R A W , JR . P r e s id e n t C U R T IS W . M cG R A W S e n io r V ice P r e s id e n t a n d T r e a s u r e r J O S E P H A. G E R A R D I S e c r e ta r y N ELSO N BOND D ir e c to r o f A d v e rtis in g E U G E N E D U FF1ELD E d ito r ia l A s s i s t a n t to th e P re s id e n t J. E . B LA C K B U R N , JR . D ir e c to r o f C irc u la tio n P u b lic a tio n office, 9 9 - 1 2 9 N o rth B r o a d w a y , A lb a n y 1 , N . Y. E d ito r ia l a n d ex e c u tiv e offices, 3 3 0 W . 42d S t., N ew Y o rk IS, N . Y. B r a n c h o ffices: 520 N o r th M ic h ig a n A ve., C h ica g o 11 ; 68 P o s t S t., S a n F ra n c is c o , 4 ; A ld w y ch H o u se, A ld w y ch , L o n d o n , W .C . 2 ; W a s h in g to n , 4 ; P h ila d e lp h ia , 3 ; C lev e la n d , 1 5 ; D e tro it, 2 6 ; S t. L o u is, 1 ; B o sto n , 1 6 ; A tla n ta , 3 ; L o s A ngeles, 14 ; 738-9 O liv er B ld g ., P itts b u r g h , 22. A ll c o m m u n ic a tio n s a b o u t s u b s c rip tio n s sh o u ld b e a d d re s s e d to th e D ire c to r of C irc u la tio n , C o a l A g e, 99-129 N o rth B ro a d w a y , A lb a n y 1, N. Y., o r 330 W e s t 42d S t., N ew Y o rk 18, N . Y. D is tr ic t M a n a g e r s : T. E . A lc o rn a n d F . W . R o e ts , N e w Y o r k ; W . A. P o tte r, P h ila d e lp h ia ; W . M. S p e a rs, C lev e la n d ; W . S. D ra k e , P itts b u r g h ; S. .T. A ilin g , C h ica g o ; C. J . C o a sh , St. L ouis.. Strip H eaters on G a solin e S h o v el S a v e T im e.................................. 122 M ine Shop A dds Pow er R eels to C raw ler T rucks....................... 122 Editorials ............................................................. F orem en's F o r u m. 110. C oal M en on the Job. N e w s R o u n d -U p ................... 127. Equipm ent N e w s .................. C. H. A. N. G. 75. 124 170. E. D irector of C ircu latio n , COAL AGE 330 W e s t 42nd St., N e w Y ork 18, N. Y. P le a s e c h a n g e the a d d r e s s of m y COAL A G E su b sc rip tio n a s follow s: N am e. .............................................................................................. .............................................. O ld A d d r e s s ............................................................................................................................... N ew. A d d re s s. ........................................................................................................................... N ew C o m p a n y C onnection ................................................................................................. N e w Title or P o s i t i o n ............................................................................................................ ___f.

(7) G ood w ire rope is precisionm a d e equipm ent. It is built to last a lo n g tim e. But w h e n e v e r y o u run it over rollers that are too sm all, y o u are b le e d in g so m e of the life from you r rope. P referab ly the roller d iam eter sh ou ld b e greater than the length of o n e rope la y . It should n ever b e le ss. W h en the roller diam eter is too sm all, it c a u s e s chatter, peenin g of the w ires, a n d w ire fatigu e. It c a u se s n e e d le s s w ea r on both the rope a n d the roller. O n the other h an d , w h e n the roller is of the proper size, your lin e rides over it m uch m ore sm ooth ly a n d q u ietly. There is le s s sla p p in g . There is le s s w ear. You'll a lso find it p a y s to u se anti-fric tion b ea rin g s, a n d to k eep the roller w ell-o iled , clea n , a n d freerunning. W h y not a sk a Bethlehem field en g in eer to look over the rollers in y o u r sy ste m ? W h ile h e's there h e'll b e g la d to ch eck your s h e a v e s a n d drum s a s w e ll. His recom m en d ation s m a y h elp y o u le n g t h e n th e lif e o f y o u r r o p e .. B E T H LE H E M STEEL C O M P A N Y , B E T H LE H E M , PA .. On the Pacific C oast Bethlehem products are sold by Bethlehem Pacific C oast Steel Corporation. W hen y o u think WI R E R O P E . . . thin k B E T H L E H E M *. F e b r u a ry , 1947. •. COAL AG E.

(8) T his I s. B IR D. Y o u r. F o r. B e s t. B e t. D r y i n g F i n e. Here’s what the B ird Continuous Centrifugal Filter does fo r you: • it team s up w ith any clean in g system to dew ater the fine coal just as it com es from the w ashers, w ith o u t pre-screening • it delivers th e fine coal dry* and w h o le, all ready for b len d in g w ith the larger sizes • it puts the w ater in shape for im m ediate re-use • it handles forty tons or m ore p er hour, taking up less than 150 sq. ft. o f space and o p eratin g at very lo w cost • it runs continuously w ith o u t parts replacem ents or shutdow ns for overhaul, m onth in and m onth out. *A m inus f i plus 0 fe e d containing 6 to 8% m inus 200 mesh fines is delivered w ith not more th a n 5% surface moisture.. Now is a g o o d tim e to find ou t w hat the BIRD can d o to g iv e you a better p roduct and m ore. C COAL A G E. • February, 1947. o f it per day at lo w er cost per ton. G et in touch w ith B ir d M achine Co., South Walpole, Mass.. ER 7.

(9) ” T H IS P U M P S E T D. e. w. a. -Y E A R. 1 1. t. e. r. i n. g. In o p e r a tio n a lm o st c o n tin u o u s ly sin c e 1936, th is A-C m in e p u m p h a s r e q u ir e d n o m a jo r r e p a ir s T. H I N K W H A T T H A T M E A N S in s a v in g s. y e a r d e p e n d a b ility o f e q u ip m e n t w h e n y o u b u y. o f d o w n tim e a n d m a in te n a n c e ! N o t o n ly. fro m. th a t —. f o r t h e s e 11 y e a r s th is a ll- b r o n z e 9 ,0 0 0. g p m , 3 6 0 f t h e a d s in g le -s ta g e p u m p h a s m a in t a i n e d i t s h i g h e f f ic ie n c y . . . h a s e f f e c t i v e l y k e p t w a t e r f r o m w o r k i n g s in a l a r g e c o a l m in e . S u c h a r e c o rd c a n o n ly b e th e r e s u lt o f s o u n d. A llis -C h a lm e rs .. Y o u ’l l g e t r e a l h e l p , t o o , i n g e t t i n g. o p e r a tin g c o s ts a n d b e tte r to n n a g e s . F o r A llis C h a lm e rs o ffe rs y o u s o u n d , u n b ia s e d e q u ip m e n t re c o m m e n d a tio n s . . . b a s e d o n th e re q u ire m e n ts o f y o u r s p e c if i c j o b .. e q u ip m e n t d e s ig n , b a s e d o n y e a rs o f e x p e rie n c e. S k ille d e n g in e e r s —. c o a l in d u s tr y s p e c ia lis ts. a re a v a ila b le n o w. to h e lp y o u p la n to m o r . in b u ild in g n o t o n ly p u m p s , b u t c o a l p ro c e s s . —. in g , p o w e r a n d. r o w ’s e q u i p m e n t n e e d s .. e le c tric a l. e q u ip m e n t a s w e ll.. Y e s , y o u ’l l g e t t o p p e r f o r m a n c e a n d y e a r - a f t e r -. lo w e r. o f f ic e .. A. l l is -C h a l m e r s ,. CENTRIFUGAL PUMPS B o th p u m p a n d m o t o r w e r e b u i l t b y A llis-C h alm ers! P u m p is d riv e n by 1,000 h p , 60 cycle w o u n d ro to r in d u c tio n m otor.. C a ll y o u r n e a r b y A -C M. il w a u k e e. 1, W is . A 2169. POWER TRANSMISSION. POWER DISTRIBUTION. are possible w ith am p le airw ay s a n d m o d ern fans, A llis-C halm ers m o to rs an d T ex ro p e V -b elt driv es. Efficient T e x ro p e drives p ro v id e speed ratio s o f 7:1 . . . p erm it u se o f lo w e r cost h ig h e r speed m otors. E xclusive d uplexsealed b elt co v er offers m ax im u m V -b elt d u ra b ility in dusty, g ritty lo cations. T e x ro p e d riv es are shock-absorbing . . . p ro te c t bearings o f b oth m o to r and fan. B elts av ailab le in S tatic-R esisting, O il-R e sistin g , O il-P ro o f types. S e n d f o r B u lle t in B 6 0 5 1 G .. and re d u c tio n o f lin e loss an d cable costs m ay be o b tain ed w ith m o d e m A llis-C h alm ers m etal-enclosed U n it S ubstations. B u ilt f o r m ax im u m safety . . . w ith n o live p a rts exposed . . . these v ersatile u n its a re available in com binations o f sw itch g ear a n d tran sfo rm er elem ents to su it any in sta lla tio n req u ire m ent. U n it su b statio n s save p o w e r costs an d increase efficiencies by b rin g in g h ig h v oltages closer to lo ad centers. Sizes 100 to 2,000 kva.. S U B S T A N T IA L. S A V IN G S. IN. V E N T IL A T IO N. COSTS. BETTER V O L T A G E. S e n d f o r B u lle t in. B6325.. BASIC PROCESSING. MINE HOISTS. R E G U L A T IO N. can b e o b tain ed w ith A llis-C h alm ers all-electric m in e h o ists fo r sh a ft, sk ip o r slo p e in stallatio n s. A llisC h alm ers has b u ilt h u n d re d s o f h o ists, in c lu d in g m any o f th e w o rld 's la r g e s t. . . has en g in eered in sta lla tio n s th a t h av e h elp ed o p erato rs greatly red u ce h o istin g costs. Sure, sm o o th o p e ra tio n u n d e r, all lo ad co n d itio n s is p ro v id ed by au to m atic “R e g u le x " co n tro l. A llisC h a lm e r s b u i l d s a ll a u x i l i a r y e q u i p m e n t . . . fu rn is h e s complete h o ist in stallatio n s f o r any req u irem en t. M O R E E C O N O M I C A L H O IS T IN G. F O R D E W A T E R I N G sm all size co al is th e com pact L o w -H ead V ib ra tin g Screen e q u ip p e d w ith E n d -T en sio n ed D eck. Screens a re ten sio n e d lo n g itu d in ally . C oal is d istrib u te d evenly over a ll o f th e screen in g area, re su ltin g in b etter d e w a te rin g effi ciency. A ll w eld ed p a rts are "stress-reliev ed " fo r la stin g stre n g th . A n d th e L o w -H ead saves space an d in sta lla tio n costs b ecause it op erates h o rizo n tally . . . req u ires less h ead ro o m . Sizes 3 by 6 to 6 by 16 ft. S e n d f o r B u lle t in B 6 3 3 0 . E S P E C IA L L Y R E C O M M E N D E D. ----. A L L I S - C H A L M E R S One of the Big 3 in Electric Power Equipment — 8. .... Biggest of All in Range of Industrial Products February. 1947. b. u. i l. d. s. f. o. r. C. O. A. L. i t __________ • _____. ■ COAL AGÇ COAL AGE. ■ February, 1947. j 9.

(10) Here's o Nine-Year Lesson in Slope Haulage A 428-foot lift- 450 tons per hour - up a 32% incline!. G O O D Y E A R IN DU STRIAL RUBBER PRODUCTS. (fp-Spedfied BELT C O N V E Y O R SYSTEM for Lillybrook Coal Company. long life, liigli-tonnage capacity and con tinuous, trouble-free perform ance of slope-entry conveyor belt haulage in all types of m ining are dram atically illustrated b y the Goodyear installa tion in the L illybrook Coal C om pany’s m ine at Affinity, West V irginia. Y et w hen first considered, hack in 1938, this operation seem ed to present many difficulties.. T. HE. 670-foot centers, the upper on 735-foot centers. To insure am ple tonnage capacity, w ith good nest ing for lum ps to prevent rollbacks, he specified G oodyear belts, 42 inches w ide, running at 350 feet per m inute.. o f Goodyear conveyor belts, both for slope haulage and underground. P roof of their superiority anil longer life is the fact that “m ore tons are h a u led o n G oodyear c o n veyo r belts th a n on any o th e r k in d ! ”. proof o f savings, w rite: Goodyear, A kron 16, Ohio or Los A ngeles 54, California.. A 12,000,000-ton record. T o bring the G.T.M. to your office for a com plete analysis of your operation w ith dollar-and-cents’. quality, phone your nearest G o o d y e a r Industrial Rubber. T h e seam was 428 feet, b elo w su rfa ce! E n g in eerin g con sid era tio n s re q u ire d s in k in g th e slope a t a 32 p e r cen t in c lin e ! A n o u tp u t o f 450 tons p e r hour was d e m a n d e d !. N ow here’s the pay-off. Today after nine years’ operation, this veteran — th e longest a n d steepest in sta lla tio n in th is fie ld — is still perform ing fault lessly, is still in A -l condition. And it has delivered the required 450 tons at the tip p le every working hour; a total of m ore than 12,000,000 tons!. To m eet these conditions the G.T.M. — Goodyear T echnical Man — specified a two-flight conveyor installation — the low er conveyor operating on. If you want lowest-cost-per-ton haulage — reduced power costs — greater output — increased safety for personnel — investigate the m any advantages. F ebruary, 1947. • COAL AG E. G. O. O THE. COAL A G E. • F ebruary, 1947. D. GREATEST. *. *. *. F O R H O SE , B ELT IN G , M O L D E D G O O D S , P A C K IN G , T A N K L IN IN G built to the w orld's highest standard of Products Distributor.. Y NAME. E A IN. RUBBER. R.

(11) S 1“s i ' i m. ven. E. :11SSfSfj ¡ I I I. I f ;l l p i l l l l i ¡ ¡ ¡ S I : 1¡1 1 S B ¡¡§1S1 1 1 |.;' •'•':. w h e n the tem p era tu re d ro p s ’w a y d o w n , Texaco O lym pian Grease retain s its. effec tiv e lu b rica tin g q u a litie s. U s e it in p la in , ca v ity hub or a n ti-fr ic tio n car w h e e l. b ea rin g s an d y o u ’ll k eep fr ic tio n a l d rag at a m in im u m — a ssu rin g easier starts and m ore cars p er train.. Texaco O lym pian Grease is m ad e e sp e c ia lly fo r m in e eq u ip m e n t and com es in three c o n siste n cies to m ee t a ll req u irem en ts. It resists se p a ra tio n an d le a k a g e . . . m a in ta in s its effe ctiv en ess in th e p resen ce o f m o istu re, and o v er a w id e tem p era tu re ra n g e . . . assures lo n g e r -la stin g p ro tec tio n . It is very easy to a p p ly . Y o u w ill find O lym pian Grease an id e a l lu b rican t fo r cu tters, lo a d ers an d sim ila r e q u ip m e n t as w e ll as fo r car w h e e ls. It g iv e s th e effe ctiv e p r o te c tio n that m eans tr o u b le -fr ee op e ra tio n and lo w e r m ain ten an ce costs. G e t a ll. th e. b en efits. o f T exaco. P ro d u cts an d L u b rication E n g in ee r in g Service. C all th e n earest o f the m ore th an 2300 T ex a co d istr ib u tin g TEXACO. p la n ts. in. th e 48. States, or w r ite. T h e T exas C om p an y, N ational Sales. M A IN T E N A N C E. m a n u fa c t u r e r s pro ve T e x a c o tive s, e tc., a n d. of. LU B R IC A T IO N. u n d e rg ro u n d. p r o d u c ts f o r use o n have. co o p e ra te d. E D D IE. NEW SHOW. O p e ra. b r o a d c a s t e v e ry S a t u r d a y a ft e r n o o n .. F ebruary , 1947. •. COAL AG E. COAL AGE. •. in p r e p a r in g. ap. lo c o m o . th ese ch a rts.. o f e a c h m a c h in e .. e v e ry S u n d a y n ig h t. M e t r o p o lit a n. cutte rs, lo a d e r s ,. S treet, N e w Y o r k 17, N . Y .. STAR THEATRE. BRACKEN. L e a d in g. m a c h in e r y. C h a r ts s h o w c le a r ly w h e re a n d w h e n to use th e p r o p e r T e x a c o. T u n e in . . . p re se n ts th e. CHARTS.. m in in g. D ivision, D ep t. C, 135 East 42n d. lu b r ic a n ts . O r d e r th e c h a rts y o u. TEXACO. coal. F ebruary. 1947. need b y m ake a n d. m odel.

(12) The most im portant advance in m otor design in 58 Y E A R S ... the. It’s com pletely n e w ; . . it’s com pletely d ifferen t. . . it wraps up the advances made in “custom -built” wartim e m otors in a sin g le package!. creased protection against electrical failure. And sealed, pre-lubricated bearings do away w ith need for greasing or attention for at least live years!. For 58 years, induction m otors have been built fundamentally alike. D ifferences have been m inor . ... im provem ents gradual. T oday, in the n ew LifeLine, W estin gh ou se presents a m ajor departure from accepted ideas o f standard-m otor lim itations.. T h e Life-Line M otor, as a result, represents the b ig g est sin g le step forward in d esign and con struction sin ce the invention o f the electric m otor 58 years ago. Life-Line M otors are n o w reaching the drives o f industry by the thousands, but are not yet available in quantities to m eet the unprecedented dem and. So, lo o k over Life-Line advantages n o w w ith an eye to your future requirem ents. Y our lo ca l W estinghouse office can give you full details, or w rite to W estin gh ou se Electric C orporation, P. O. B ox 202 5, Buffalo 5, N . Y .. Life-Line, today, offers industry a truly all-steel protected m otor. A ll exposed surfaces are H EA V Y STEEL-—frames o f even the sm allest sizes are %" thick. M ore com pact p ow er is packed in Life-Line. For exam ple, on the 2 8 4 frame, size has been reduced 35%, although N EM A m ounting d im ensions have been m aintained . . . starting torques are as much as 134% greater per pound o f m otor . . . maximum torques as much as 116% m ore per pound. Electrical characteristics have been im proved . . . n ew materials and n ew w in d in g techniques give in-. S P A C E P E R H P . L if e - L i n e M o t o r s o c c u p y le s s s p a c e p e r h o r s e p o w e r th a n a n y o t h e r s t a n d a r d m o t o r . . . m a k i n g it e a s ie r to b u ild in to m a c h in e s a n d in s t a ll in c r a m p e d q u a r t e r s . LESS. W hen W estinghouse engineers began d esign in g a postw ar m otor they abandoned the concept that all m otors must be cousins. Instead, they asked electric m otor users w h a t they w a n ted in m otors . . . features they couldn’t buy in any one motor. T hese features dem anded m ost by m otor users are a ll incorporated in the new Life-Line M otors:. A ll f r a m e s , fe e t a n d b r a c k e t s a r e H E A V Y S T E E L . L ife L in e M o t o r s t a to r s a r e f a r s t r o n g e r — a n e w c o r e l o c k i n g d e v ic e e l i m i n a t e s riv e ts. . A L L -S T E E L P R O T E C T IO N .. ouse. OFFICES EVERYWHERE. L ife -L in e M o t o r s g iv e a s m u c h a s 1 3 4 % h i g h e r s t a r t i n g t o r q u e p e r p o u n d o f m o t o r . . . u p to 1 1 6 % h i g h e r m a x im u m t o r q u e . M O R E T O R Q U E P E R LB.. L U B R I C A T I O N F O R 5 Y E A R S . L ife -L in e M o to rs n e e d n o g re a s in g f o r A T L E A S T F IV E Y E A R S . B e a r i n g s a r e p r e l u b r i c a t e d . . . s e a le d a g a i n s t d i r t a n d m o is tu re .. NO. L ife -L in e M otors are now in production a t th e n e w Westinghouse M otor W orks in Buffalo, N . Y . T h is p la n t is la id out, tooled a n d equipped to fu lly u tilize new ly developed production processes a n d techniques on a scale hitherto uneq u a lled in the m anufacture of electrical motors. >21406. W IN D IN G S . N e w in s u l a t i n g m a te r ia ls . . . n e w c o il w in d in g te c h n iq u e s . . . n e w s ta to r s lo t d e s ig n s . . . g iv e t h e L if e - L in e n e w r e c o r d - s e t t i n g p r o t e c t i o n a g a i n s t e l e c t r i c a l f a ilu re s . IM P R O V E D. Q U IE T S M O O T H N E S S . L ife -L in e M o to rs c u t v ib ra tio n a n d n o is e to n e w lo w l i m i ts f o r s t a n d a r d m o t o r s . . . s a tis f y m a n y " s p e c i a l m o t o r ” r e q u i r e m e n ts .. NEW. T h e L if e - L in e h a s s le e k li n e s . . . a s m o o t h f in is h . . . d i s c o u r a g e s d u s t a n d d ir t a c c u m u la tio n s . . . h a r m o n iz e s w ith m o d e r n m a c h in e a n d to o l d e s ig n .. N E W S L E E K LIN ES..

(13) ■. GOODMAN LOADERS. ■. .. -. M A X IM U M C L E A N -U P. CA PACITY. •. E A S E OF CONTROL. •. LOW M A IN T E N A N C E. iiL.1 U. ;■-. :S;' •;ć ■■■•:! ■ : -. GOODMAN MANUFACTURING COMPANY CHICAGO. SilP i P§ ®. m m m m m i ■ ■ B a s. COAL A G E .• February, 1947 February, 1947. •. COAL AGE. 9,. ILLINOIS.

(14) 0. R. E. C. T. I. F. I. E. R. C. U. T. S. P. O. W. E. R. C. O. S. T. S. 3. 1. . . . I N THIS PENNSYLVANIA MINE! Cost per ton shows su b stan tial decrease following llation of high efficiency G-E Mercury Arc Rectifier In the middle o f January, 1946, a General. and its ability to supply ample power when. Electric sealed-ignitron mercury-arc rectifier. required, these power savings were achieved.. was installed at the McCombie mine in cen. Moreover, the rectifier’s overload capacity. tral Pennsylvania. W ithin six weeks, cost. makes possible power continuity at a steady. records proved the ability o f a mercury-arc. level during the high peak periods in the. rectifier to cut power costs. Elcre are the. mining power load. Regardless o f the size o f your mining. facts: M O N TH. G-E PORTABLE MERCURY-ARC RECTIFIERS. Decem ber, 1 9 4 5. ■ * . in a d d itio n to th e b a sic efficiencies o f m e rc u ry a rc e q u ip m e n t, p ro v id e these w o rth w h ile a d v a n ta g e s for u n d e rg ro u n d a p p lic a tio n s:. (old method) J a n u a ry , 1 9 4 6. H*. E nclosed fo r g re a te r perso n n el sa fety. (first half-old method). Si. H ig h ly p o rta b le fo r m o v e m e n t close to th e w o rk ing face. 3*. L ow -slung design fo r u se in c ra m p e d a reas. 4i. D e a d -fro n t p a n els to keep o u t d u s t a n d d ir t. Si. W ide ra n g e o f a v a ila b le ra tin g s. (second half-rectifier). PRODUC. POW ER COST. T IO N. PER TO N. result in reduced power costs. And a General 5 3 9 5 tons. $ .0 9 7. 6 1 2 6 tons. 6 4 7 0 to n s. been directly responsible for a cut o f $ .03. . . . a re w ell s u ite d fo r u se in p re p a ra tio n p la n ts , ore m ills, su rfa ce su b s ta tio n s , a n d sim ila r a p p lic atio n s. Im p o r ta n t fe a tu re s are:. per ton in power costs— a 31% reduction.. H ig h c o n v ersio n efficiency in all ra tin g s. Thanks to the inherent efficiency o f a Gen. Low m a in te n a n c e costs. eral Electric mercury-arc rectifier at all loads,. '*•. L o n g , c o n tin u o u s service. 4«. Q u ie t o p e ra tio n. W ide ra n g e o f a v a ila b le ra tin g s. February. 1347. • COAL A G E. COAL AGE. • February.. G-E office today.. Apparatus Department,. General Electric Company, Schenectady 5, N . Y.. In other words, power rectification has G-E STATIONARY MERCURY-ARC RECTIFIERS. Electric rectifier may be the solution. W h y not find out now? Call or write your nearest. F e b ru a ry , 1 9 4 6 (rectifier). operation, improved conversion methods may. 1817. 0.

(15) A gear lubricant that won’t run away from heat. (A b o v e ) T w o sa m p le s o f g r e a s e , C a lu m e t V is c o u s a re s id u u m. ty p e. L u b r ic a n t o n. g e a r s h ie ld , rig h t. T h e se s a m p le s a r e. p la c e d. le ft a n d on a. hot. p la t e (b e lo w ) a n d h e a t e d to 3 2 0 ° F . as d e te r m in e d b y th e th e rm o m e te r in th e b e a k e r o f o il. W it h in 6 0 se co n d s th e o ld ty p e g e a r s h ie ld h a s m e lte d and. sp re ad. o v e r th e. p a n . T h e re. is little. or. no. change. in. stru c tu re. of. C a lu m e t V is c o u s L u b r ic a n t e v e n a t th is h ig h te m p e r a tu re .. T h e SIMPLE TEST d escrib ed h e re show s w hy C alu m et V iscous L u b ric a n ts are unu su ally effective for lu b ric a tin g m in e e q u ip m e n t such as, w ire rope, shovel an d h o ist gears. It red u ces throw oft’ c u ts lu b ric a n t c o n su m p tio n an d p ro te c ts o p e n gears for lo n g p erio d s o f tim e even th o u g h su b jected to elevated tem p eratu res. It p e n etrates an d p ro te c ts w ire ro p e a g a in st in te rn a l an d ex tern a l w ear. C alu m e t V iscous L u b ric a n ts have these q u a lities b e cause they are n o t th e old ty p e g e a r shields b u t are tru e greases m ad e fro m selected soaps a n d oils o f p ro p e r v is cosities. T h ey d o n o t re q u ire h ea tin g b efo re a p p lica tio n , and all b u t th e heaviest g rad es can be sprayed. B o th fea tures offer a fu rth e r sav in g in tim e an d grease.. A S tan d ard O il L u b ric a tio n E n g in e e r w ill help you le c t th e g rad e you need for lo w co st o p e n g ear lubricatij S tan d ard O il C o m p an y (In d ia n a ), 9 1 0 S o u th M ichii A venue, C h icag o 8Q, Illinois.. S T A N D A R D O IL C O M P A N Y (IN D IA N A ).

(16) mm. si. C % 2 il. Now we leave the assembly lines in the Jeffrey plant and show you one of these massive 29-U Universal Cutters in an "on the spot" pose. Hydraulically-operated, the Jeffrey 29-U can cut anyw here in the seam—top, center, bottom or shearing cuts. Can be fur n ish e d tra c k -m o u n te d , with crawlers o r w ith pneum atic tires..

(17) EQUIPMENT FOR COAL MINES J E F F R E Y S E R V I C E TO THE C O A L M I N E S MEANS SERVICE TO ALL INDUSTRY. To a large degree sk ill is the result of lon g experience. T he. LOADERS. m en show n assem bling Jeffrey 29-U U niversal Coal Cutters have specialized on this p a r tic u la r e q u ip m e n t fo r years.. .... t. T h ey k n o w it lik e a watchm aker know s a watch.. Although they may never have the opportunity of seeing the machines they build in actual op eration, they know from past performance records that rigidity, . t C \ stren gth and carefu l w ork m an sh ip pays o ff in fXfir* long satisfactory service.. b lU. I • liS r l:. CUTTERS. DRILLS. I. %. CO N V EY O R S. W e at Jeffrey w ish to giv e credit to these m en respon. m ■. AND D R ILLIN G. sible for the b u ild in g o f this efficient equipm ent and k now. M A C H IN E S. that operators u s in g ou r C u tters, L oad ers, L o c o m o tiv e s, drills, U nderground Conveyors, Fans and T ip p le Equipm ent appreciate the high quality attained by Jeffrey trained men.. FANS. T HE J E F F R E Y M A N U F A C T U R I N G C O M P A N Y (L.itabfiiled in B efore th is biji Jeffrey 2 9 -U C u t l e r ( w i t h c r a w l e r m o u n tin g ) is s h i p p e d i t is g iv e n every possible test in th e shop. P h o to show s a J e f f r e y e m p lo y e e p u ttin g th e m a c h in e t h r o u g h its paces.. 912-99. NORTH. FOURTH. Safes Offices:. Baltimore Birmingham Boston Buffalo. Service Stations:. Pittsburgh H arlan. Ky.. Foreign Plants:. Jeffrey Mfg. Co., Ltd. Montreal. Q uebec. 1877. STREET.. Chicago Cleveland Cincinnati Defroit. C O L U M B U S. Denver Harlan Houston Huntington. Birmingham St. Louis British Jeffrey.Diamond, Ltd. W akefield, England. 16.. Milwaukee New York Philadelphia Pittsburgh Logon-Beckley W . Vo.. OHIO Scranton St. Louis Salt Loire City Scranton Jeffrey-Golion (P ty ), Ltd. Johannesburg. S. A..

(18) Split-Second Timing gets results . . .. ATLAS ROCKMASTER BLASTING has a scoring p In modern basketball winning scores are the result of teamwork based upon split-second tim ing. In m odem blast ing, too, an amazing control of riming is producing outstanding results for blasters all over the country. N ow the blaster is able to time the delay elem ents o f his shot in thou sandths o f a second . . . a feat never before possible . . . and fragmentation has increased trem endously. W hile still under the strain o f the first blast, the rock is hit again . . . a split-second later . . . with terrific im pact. The results are astounding. In dollars and cents, Atlas Rockmaster means money saved. Reports coming in from one blasting operation after another continue to tell o f fragM a n a s lle : R e « . U . S. P a t . OH. - R O C K M A S T l'.lt". m entation increased as much as 30% . . . shovel efficiency stepped-up . . . secondary shooting cut down . . . and complaints due to noise and vibration held to a minimum. O f course, split-second tim ing is not the only factor in a Rockm aster blast. For Atlas Rockmaster is a complete blasting system . . . not just a tim ing device. All factors o f the blasting problem — detonators, explosive and lo a d in g — are ta k en in to acco u n t and combined with your know-how and ours to produce true Rockmaster effectiveness. T o find out how Rockm aster can be made to work for you with outstanding results . . . call in your Atlas representa tive.. ROCKM ASTER GIVES YOU T H E G REA TER SAFETY OF MANASITE DETONATORS. L ess B a rk . M o re B ite. Trade M a rk. A TLA S. E X P L O S IV E S “ E v e r y t h i n g for B l a s t i n g ”. ATLAS PO W D E R C O M PA N Y , W ilm ington 99, Del. • Offices in principal cities *Cable Address —A tpoivco COAL AGE. • February, 1947. 25.

(19) '. 1. ,. ! ✓. s. / e........IMS........... t. <i. '. iiif. WHERE YO U NEED IT W H EN YO U NEED IT SAFETY FEEDEI. @. 0 4 t. DUAL W. SUSPENSI CLAMPS. GROUND CLAMPS. FUSED TROLLEY TAPS M OTOR STARTERS. TROLLEY SHOES. "U " TYPE BONDS. FEEDER CLAMPS. SECTION INSULATORS. WHETHER your pow er distribution system em braces but a few m iles of trolley and feeder or a com p lex arrangem ent of interlocked control for m echanical equipm ent, you can b e certain of reliable, low -cost service b y installing O-B pow er handling m aterials from substation to face. D esig n ed to work together, O-B materials com bine to produce a system that really w o r k s --a system not subject to p ow er outages from product failures--a system that assures an adequate flow of controlled p ow er w hen and w here you n eed it. O-B's com p lete "substation-to-face" lin e of p ow er distribution m aterials in clu d es a w id e variety of d ev ices, each carefully d e sig n e d and exp ertly m anufactured for years of trouble-free service. Many of the individual products are show n here. For a m ore com p lete selection , consult your No. 2 2 catalog.. 'DISTRIBUTION BOXES. W EDGE BONDS. EX PA N SIO N BOLTS, HANGERS AND TROLLEY CLAMPS. M ECHANO-PLUGS. SPLICE BOXES 27D7-M. February, 1947. • COAL AGE. COAL A G E. -. F ebruary. 1947.

(20) OR boom falls on shovels and draglines, for operating ropes on vertical lift bridges, for pan hoist and counterweight ropes on car dumpers— industry after industry has heavy hoisting conditions which are best served by Upson-W alton 6 x 19 Filler W ire Perfection Layrite.. F. Perfection grade because this improved plow steel is the strongest and toughest and most resistant to wear of all the grades o f wire used to make rope. Layrite because this fine preformed wire rope results in longer life, greater safety, greater economy.. Hemp center or, where hoisting conditions are ex tremely severe, IWRC (independent wire rope center) Upson-W alton, 6 x 19 Filler W ire is the svire rope which provides a fine balance between coarser ropes, which have good abrasion resistance but poor flexibility, and flexible ropes with less abrasion resistance. UpsonW a lto n 6 x 19 Filler W ire cable combines good flexibil ity w ith good abrasion resistance. The filler wires support uniform outer wires, thereby giving the rope a greater resistance to crushing and other damage where radial pressures and operating conditions are severe. This construction provides a high percentage of reserve or internal strength.. It w ill pay you to specify (anti supply) U pson-W alton 6 x 19 Filler W ire cable— perfection grade— Layrite pre form ed— for heavy hoisting duly. E s t a b lis h e d 1 6 7 1 C o p y rig h t 1 9 4 6 — The U p s o n - W a lt o n C o m p a n y. THE UPSON-WALTON COMPANY 7H4Mufricttvien4. o £ T O t n c IRofie. T O i n c TRofie. "locale “ S O x c & d \j.. M A IN OFFICES A N D FACTORY: C LE V E LA N D 13, O H IO 114 Broad Street New York 4. 23. 737 West Jackson Boulevard Chicago 6. 241 O liver Building Pittsburgh 22. February. 1347. ■ COAL AGE.

(21) Two •'Caterpillar'* Diesel D4400 Electric Sets, with a com* bined work record of some 42,000 hours, power a coal mine and light a village In the Colombian Andes,. U p in th e A ndes M ountains, m ore th an 30 m iles from any power-line, a successful coal m ine oper ates on current generated by a pair of “ C aterpillar” D iesel D 4400 Electric Sets. ••Caterpillar'* Diesels generate low-costjpow*r te pull lood»a cars up from the mine by an electric hoist.. CATERPILLAR. “ Carbonera San V icen te” is th e largest coal-m ine hacienda in Colom bia. Since 1040 th e tw o “ Caterpillar” D iesels have n ot only supplied all power for th e electric hoist, m ine pum ps and a fully equipped m achine shop, but have lighted th e nearby village of Sesquile, as w ell. Work records of th e tw o engines show th a t one has operated 24,000 hours and th e other 18,000. T he owners previously used a steam generating plant, burning coal from the m ine. T h ey estim ate th a t these dependable “ Caterpillar” D iesels have cut powercosts by more than 00 per cent. Soon th e generating capacity of the m ine is to be increased, so th at more labor-saving electric m achinery can be installed. T h e new power will com e from tw o “ Caterpillar” D iesel D 8800s, now on order. It is an axiom of “ Caterpillar” dealers all over th e world th a t a product is never really sold until custom er satisfac tion brings a second purchase. CATERPILLAR. COAL AG E. •. F ebruary, 1947. TRACTOR. C O.. •. PEORIA.. I LLINOIS. 29.

(22) S U U IV A N. COAL CUTTER L ic e n s e d un der the patents to E. C . M o rg a n , N o 's 1 ,7 0 6 ,9 6 1 - 1 ,7 0 6 ,9 6 2 — 1 ,7 07 ,1 32 and 1,953,325. Jo y. Lo a d ers,. lik e. this. 11 -B U , p a i r o fF w ith. S u lliv a n. cu tle rs to s p e e d p r o d u c tio n , se t n e w r e c o r d s f o r m in in g e c o n o m y in m a n y m in e s th ro u g h o u t th e n a t io n .. - Sif1p:V ftf§ 01V|S1O N ,-p. /P f ,. t «$,. *< € ^. <4. * **“.

(23) Easier w ay to better piping . . . CRANE Supplies Everything ft-P I. W hy d o it the hard way w hen you can sim plify every step o f p ip in g jo b s—from d esign to erection to m aintenance w ork. Specify Crane equipm ent—the truly com p lete lin e that n ot only in clu d es everything you need, but assures the quality you w ant in every item .. w SUPPLY SOURCE OF RESPONSIBILITY. STANDARD O F QUALITY lai v-,<. for exam ple, sh ow s the 3-way advantage o f standardizing on the com plete Crane lin e —. This air service piping system,. ONE SOURCE OF SUPPLY g iv e s y o u th e w o r l d ’s m o s t c o m p l e t e s e l e c t i o n o f v a lv e s , f ittin g s , p i p e , a c c e s s o r i e s a n d f a b r i c a te d p ip in g f o r a ll p o w e r, p ro c e ss , a n d g e n e ra l s e r v ic e a p p l i c a t i o n s . O n e o r d e r c o v e r s e v e ry th in g f o r th e jo b . ONE RESPONSIBILITY f o r p i p i n g m a t e r ia l s h e lp s y o u to g e t th e b e s t in s ta lla tio n a n d t o a v o id n e e d l e s s d e la y s o n j o b s . OUTSTANDING QUALITY in e v e r y it e m a s s u r e s u n i f o r m l y h i g h p e r f o r m a n c e in e v e ry p a r t o f p i p i n g s y s te m s .. CRANE CO., 8 3 6 S. M ichigan Ave., C hicago 5, 111. Branches and Wholesalers Serving A ll Industrial Areas. {Right) ID E A L F O R A IR S E R V IC E — Crane No. 7 Brass Globe and Angle Valves with renewable composition disc. Special longwearing Granite disc insures tight seating under severe usage. Finest materials and design throughout. Specify the No. 7 fo r air pressures up to. 300 lb. Steam rating, ISO lb.; also fo r other services with proper Granite disc. SeeyourCrane Catalog, page 30.. E V E R Y T H IN G F R O M . . . VALVES • FITTINGS PIPE. •. HEATING. PLUMBING • PUMPS. F O R E V E R Y P IP IN G S Y S T E M 32. S f b r u a r y . 1947. •. COAL AG E.

(24) 2. T. O. U. R. N. A. P. U. L. p e r h o u r. L. S. o n. m ove 4 0 lo a d s 2 0 0 '. h a u l. .. .. To open coal deposit under 3 acres of Hunt Farm near G reensburg, Pa., A d a m Eidemiller had to strip 3 0 ' of clay, shale and soft oily w aste coal . . . m oved all of it fast and at low cost with his LeTourneau equipment.. 400' cycle every 3 minutes O n short 2 0 0 ' hauls, 2 fast-m oving, big rubber-tired Tournapulls delivered 4 0 loads of moist clay and topsoil an hour. That’s an a ve rage round trip of load, haul, spread and return every 3 minutes for each rig.. LeTourneau user over 20 years Eidemiller, a veteran LeTourneau equipm ent user for over 20 years, used these sam e Tournapulls on stripping o p e ra tions near N e w Dairy, Pa., then drove them to this job near Greensburg. Y o u r LeTourneau Distributor has facts a n d figures proving Tournapulls low est-net-cost-per-yard for stripping in sm all ..... mines, benching d ow n deep overburden, mine d rain age, road construction, surfacing, etc. He can show you how they will save m oney a n d m ake m oney for you. —w.Mo»*«.«.u.s.ro».oh.cmio*. ^. IE T D U W M E A U F O R. L O W E S T. T. N E T. O. U. C O S T. R. N. A. P E R. P. U. L. L. S. Y A R D. ..

(25) In this special machine there’s plenty for you as a user of industrial lubricants. W ith the modern Refractometer, Sinclair Laboratory specialists keep posted on w hat’s in your industrial lubricants. It shows them w hat properties to strengthen, so the finished product w ill perform best in any specific application.. StHciacn, ¿lufauceuttd.. Index of refraction and specific dispersion, determined by the Refractometer, is a meas ure o f the chemical structure of lubricating oils. By use of such instruments as the Refrac tometer, Sinclair maintains important con trol points in the manufacture of dozens of industrial lubricants.. ¿ori s 4 6 w e - ^ t o u H c i. For Turbines:. SIN T U RLIT E O ILS For Steam Cylinders:. S IN C L A IR STEAM C Y LIN D ER A N D VALVE O ILS For Compressors:. RUBILEN E O ILS For G eneral Lubrication:. Such laboratory research and control gives you assurance that Sinclair lubricants are made correctly to provide the kind of special protection your valuable machinery requires. S IN C L A IR. R E F IN IN G. C O M PA N Y. •. C O M M A N D E R O ILS For Ball and Roller Bearings:. B E A R IN G GREASE AF. 630. FIFT H. AVEN UE,. NEW. YORK. 20,. N . Y.. o n ry m rv T T v. T u b z u a r y . 1947. •. COAL AG E.

(26) Gould K ath an o d e lo tt e r ie s po sitively hold all useful active m aterial in place® Hockey goalies a re p re pared for jolts and bruises. Similarly, Gould Kathanode Batteries a re designed to meet the shocks and strains o f moving vehicles in mine locomotive operations. In this service they deliver full po w er o r better throughout their entire service life.. In Gould Kathanode Batteries each positive plate is faced with mats o f spun glass, in turn held in place b y perforated rubber envelopes. Between each positive and negative plate additional protection is provided b y D urapor Separators m ade o f a highly porous rubber. This is the famous Kath anode construction that insures retention o f all useful active material even under the most severe operating conditions. G e t the facts about Gould. W rite Dept, i 12 for C a ta lo g 2 0 0 on Gould Kathanode G lassklad Batteries for M ine Locomotive Service.. G O ULD C e n te rs :. STORAGE. BATTERY C O R P O R A T IO N ,. D epew , N . Y.. S e r v ic e. A t la n t a • B oston • B u ffa lo • C h ic a g o • C in c in n a ti • C le v e la n d. D e t r o it • K a n s a s C it y • Los A n g e le s • N e w Y o r k • P h ila d e lp h ia • P itts b u rg h • St. Louis • St. P a u l • S a n F ra n c is c o • S e a tt le • Z a n e s v ille. COAL AGE. •. F e b ru a ry . 1347. 35.

(27) H O W TO GET M O R E. EFFI C I ENC Y for RE DUCI NG. INCREASED COSTS?. The. e ffic ie n t. p e rfo rm a n ce. r in g a c tio n th a t s p lits. of. A m e ric a n. by r a p id. a n d h ig h rate o f re d u ctio n .. C rushers. is. b a se d. up on. the. shre d d e r. im p a c t rather than crushes fo r u n ifo rm. sizing. C a p a c itie s up to 500 T P H .. Illu stra tio n shows s in g le sh re d d e r rin g w ith its 20 cu ttin g e dge s an d ro to r e q u ip p e d w ith m u ltip le s o f shre d d e r rings.. heavy-duty. The new " A C " bulletin is packed with facts, data and specifications on the Am erican " A C " C rusher and it gives spe cific reasons and examples why the " A C " C rusher has proven so highly efficient and dependable in m any mines throughout the country. Thoroughly illustrated, it shows the com pact, sectional construction and the ru gge d design of these crushers as well as actual plant installations. If you are looking for a more efficient m ethod of coal reduction send for the " A C " bul letin now!. 1349 M ACKLIND AYE. ST.. 36. LOUIS. F e b ru a r y , 1947. 10.. •. M O.. COAL AG E.

(28) TO CUT SCREEN COSTS I t ’s here a t last—a new, b e tte r w ay to combine the tonnage o u tput you g e t from maximum open area w ith the long-life economy of heavier w ire diam eters. In R o e - F l a t , Roebling introduces a crim ping method th a t provides an a b s o l u t e l y f l a t w earing surface. W ithout reduc ing open area, w ithout sacrificing volume of production, R o e - F l a t gives you up to 90% longer w ire screen life! H ere’s why: 1 . R o e - F l a t has over 75% more m etallic w earing surface th an ordinary crim ps—because w ear is spread evenly over practically all the surface of th e wires, not concentrated on the raised intersections.. R O E -S L O T. 2. W ith parallel w ires on the sam e plane, th e re ’s less blind ing because of R o e - F l a t ’s unique construction. 3. A ccurate size of openings assures uniform product, helps increase screening production. 4 . Im proved quality steel is used, to increase resistance to abrasion, w ear and fatigue.. R o e - F l a t ’s. The advantages of R o e - F l a t crim p can be incorporated in w ire screening of practically every design. Get the full story. W rite today for the facts.. ROE-TON. J O H N A. R O E B L IN G 'S S O N S C O M P A N Y Woven W ire F a b ric s D iv isio n TRENTON 2, N E W JERSEY. M a n u f a d u r e r j o f W ir e R o p e a n d S t r a n d • F itt in g s • S lin g s B r id g e s a n d C a b le s A e r ia l W ir e • H a rd ,. Rope. A n n e a le d. • A ir c o r d , A i r c o r d T e r m in a ls a n d S y ste m s • or. E le c t r ic a l W ir e. T em p ere d. S p e c ia lt y W i r e , F la t W ir e , C o ld S te e l • S c re e n , H a r d w a r e a n d. COAL AG E. •. F e b ru a r y . 1347. H ig h. and. R o lle d S t r ip. C a b le. Low. C a rb o n C o ld. C lo t h. ROEBLING. A i r C o n t r o ls •. and. and. In d u s tr ia l W i r e. S u s p e n s io n. •. S k i Lifts F in e. R o lle d. and. S p r in g. • Law n M o w e rs. A CENTURY OF CONFIDENCE.

(29) C. :I6 T. I. •. f. - ’. ::" T '. f. N e w E x c l u s i v e P o w e r Cl ut ch Steps Up O p e r a t o r Efficiency. T op. p ro d u ctio n. K o e h rin g p h y s ic a l. 605. b ecause. the. is e a s y on the o pera tor.. all. No. fa tig u e ,. day. b e c a u se. lo n g , heavy. h a n d - le v e r. p u ll is elim ina te d . E n g a g in g the K o e h r in g 6 0 5 P o w e r Clutch, ta ke s o n ly 1 / 1 0 the le ve r pull re q u ire d to set a m a n u a l clutch o f s im ila r size. Lever pull is ra re ly m ore th a n 7 lbs. N o n e rv o u s fa tig u e , b e c a u se “ Feel o f L o a d ” h a s b e e n re tained. Clutch is co m p le te ly re sp o n siv e . Engine power does the heavy work, supplies 9 0 % of the effort w hen operator sets these main drum clutches on the Koehring 6 05.. C o il- s p r in g sh o c k a b so rb e rs, o n e o n e a c h sid e of b o o m foot, protect the K o e h rin g 6 0 5 a g a in s t b o o m stra in s a n d s u d d e n lo a d s.. T h is.n o t o n ly. in su re s a g a in s t b o o m trou b le s a n d d e la y s, bu t a ls o sp e e d s up entire d ig g in g cycle. W ith the 605,. your. o p e ra to r. can. use. fu ll. sp e e d. up. th ro u g h the b a n k w ith o u t fe a r o f ca tc h in g a le d g e or n ig g e r h e a d o n the c o rn e r . . . can u se full throttle on the s w in g , b ra k e s h a r p ly o ve r the truck, letting the sh o c k a b s o rb e r ta ke care o f “ w h ip ” action. Light lever pull, 7 lbs. average, eliminates operator fatigue. No costly production letdown at shift end.. See y o u r K o e h r in g D istributor for m ore info rm a tio n on the 605.. Two coil-spring shock absorbers, one on each side of boomfoot, cushion out shocks and stresses of rock handling.. With entire shovel shock-absorber protected, it’s safe to handle big dipper loads like this. No danger of boom trouble here.. KOEHRING COMPANY Milwaukee 10,Wis.. KOEHRING DUMPTOR: A Hauling Unit Built by a Shovel Manufacturer. -. W. I. Gravity Dump Nr* Body Hajst «fid gravity fijis irfiop s N p r t lb o d y Jnstari»*.

(30) From one end of the world to the other, you'll find. No matter what kind of material you work with.... Gar Wood Holsts and Dump Bodies in action. The. sand, gravel, rock, coal, or construction materials.... reason? They're designed, engineered, and built to. there's a Gar W ood Hoist and Dump Body to make. do specific jobs, no matter how tough. Hydraulically. the job easier...help you make money, faster.. operated, with simple controls...they dump cleanly,. Gar W ood Hoists and Dump Bodies have been, and. quickly, and easily... make it possible to get to the. are constantly being proven all over the world on the. next job taster.. toughest jobs. For your next job, specify Gar Wood.. ROAD M A C H IN ER Y HEATING UNITS • M O TO R BO ATS W IN CH ES AND CR A N E S -m*. 40. F e b ru a r y , 1947. •. m. m. &,. COAL AG E.

(31) Easy-Mounting, Fast-Locking Sheave. TEXROPE ..Greatest Name in V-Belt Drives. "Su p e r 7 ” V-BELTS F ive T y p es — Sizes to s u it every p o w e r tran sm issio n job.. The First Time You Put It On! Texsteel,Texdrive, “M a gic-G rip ” — sheaves in a fu ll r a n g e o f s iz e s , grooves.. "Vari-Pitch” SH EAVES E xact v a r i a t io n s in speed, s t a ti o n e r y o r m o tio n control.. M A G I C - G R I P sheaves offer time-saving, money-saving features! E v e n if you install the sheave only once, and never change it again — it pays to get a "Magic Grip’’ sheave! For frequent changes, naturally, your savings pyramid. • N o filing or reaming. "M agic-G rip” bushing slides easily, even on oversize shafts. • N o hammering or forcing to damage motor bearings. • N o wheel puller needed to get the sheave off. • N o set screws to mar or score the shaft. • N o wobble or blacklash. "Magic-Grip”. sheaves lock to shaft with shrunk-on grip. H O W DOES IT WORK? Sheave and bushing come completely assembled. You just slip it on the shaft — align — and tighten three screws. That’s all! And it comes off just as easily. Standardize on time-saving, money-saving "Magic-Grip” sheaves. They’re heavy duty, precision made and finely finished — the best sheaves you can buy the best economy in the long run. Get them through your nearest A-C dealer or office. A llis-C h alm ers, M ilw a u k ee 1, W is.. SPEED CHANGERS Speed v ariatio n s u p to 3 7 5 % a t th e tu r n o f a crank.. E N G IN E E R IN G F inest V -B e lt en g i n e erin g ta le n t i n th e w o rld — a t y o u r call. T E X R O P E "S u p e r 7 ” V - B e lts r e s u l t fro m th e co o p erativ e research o f tw o g re a t c o m p a n ie s — A llisC h a lm e r s a n d B. F . G oodrich. T h e y a re so ld only by A -C .. A 2165. 1847'S?'19'i7. A LLIS'C H A LM ER S One of the Big 3 in Electric Power Equipment —. Biggest of All in Range of Industrial Products. sesfmKiry !? © s s r w s s. to Industry THAT MADE. America Great '///.

(32) A. F X F C F F / F F S CAAIF... T / / F V S A I F ... TIf F Y SA I F , ]\J. Executives of the N ew York Central Railroad wanted to see w hat actually went on in the brand new coal preparation plant of the Blackfoot Coal and Land Corporation in Pike County, Indiana, near Evansville. So they visited this modern plant for the opening ceremonies. A ll of these officials m arvelled how raw coal, al ready of fine quality, entered the plant at the top and came out at the bottom further beneficiated. MILESTONE. ONDE R F U L !. into super-select clean c o a l. . . screened for size, washed, dried, and loaded into waiting coal cars. The entire operation was com pletely autom atic on a production line basis.. That day, while these busy executives were looking, they saw coal prepared (500 tons per hour) to meet buyers’ specification, start to waiting markets, and to bring premium prices.. Yes, they said . . . wonderful!. IN. COAL P R O D U C T I O N ACHIEVEMENT. Look behind the stream lined exterior of this brand new coal preparation plant and you will find, as you expect, a master plant layout. The wisely planned cubicle interiors inspire effi ciency. Light flows through the continuous sash into every corner. Workers and m anagement take equal pride in the specially built eq u ip m en t. . . washers, dryers, conveyors . . . which perform au. tom atically with scarcely any need for super vision. R aw coal can be transformed quickly and at low cost for cleaning, into specification fuel for the waiting premium-price market. M cNally Pittsburg technical staff welcom es the opportunity to discuss coal preparation projects . . . large or small . . . w ith the production and executive officials of your company.. View of two McNally Car penter Dryers in the new preparation plant.. BQHBn. IIS I B U M. I. (Reproduction o f advertisement substantially as it appears in Fortune M agazine.). McNally Pittsburg Manufacturing Corporation, Pittsburg, Kans. • Marrow Manufacturing Co., Subsidiary, Wellston, Ohio. Engineering & Sales Offices: Chicago(1),lll. • Piltsburgh(22),Penna. • Columbus, Ohio • Wellston,Ohlo • CaixaPostal 1310, Rio de Janeiro, Broiil.

(33) m. w m. tcm. q - n e w. m o d e ls. IN T E R N A T IO N A L T R U C K S Truck owners w ill operate them—drivers w ill drive them —with greater pride than ever before. They’re the new KB Models of Interna tional Trucks—outstanding products o f ad vanced design, engineering and research — newly styled with flowing lines sharply ac cented by gleaming chrome, and with 95 features and improvements variously incor porated throughout 15 basic models. And fully qualified to do their jobs with new economy, new ease o f operation, and the rugged stam ina for w hich Internationals are famous! They’re the finest values in more than 40 years o f International Truck history. A nd In tern ation al values have always been outstanding —so outstanding that for 16 years more. heavy-duty Internationals have served Amer ican commerce and industry than any other make. In the complete International Line there’s the right truck for every hauling job. And back o f every truck is specialized International Service—su p p lied by the n ation ’s largest company-owned truck-service organization, International Branches—and by International Dealers everywhere. Yes, the new KB Internationals w ill be owned and driven with pride—with pride and profit—because these rugged trucks perform with unbeatable economy. M o to r T r u c k D iv is io n. I n t e r n a t io n a l H a r v e s t e r C o m p a n y 180 N o rth M ich ig an A venue, C hicago 1, III.. □. II. Tune in Jam es M elton on " H a rvest o f S ta rs" ev e ry Sunday! NBC N etw ork. See n e w sp a p ers fo r time and station .. IN T E R N A T IO N A L. Trucks.

(34) P a li’s N ew 6 -yd Electric Shovel N ow A v a ila b le w ith ”M agnetorque” Hoist D rive M agnetorque D rive sim plifies the entire h oistin g m achinery including the pow er units . . . a sim ple AC induction m otor d o es the driving. Here are som e of its outstanding advantages: 1. It elim inates the custom ary hoist generator and its m aintenance.. 5. It cushions shock loads . . . re d u ces overall m aintenance.. Other Added Values in P&H's 6-yd Electric Shovel include: DIRECTRON CONTROL — elim inates all make - and - break contacts in control system.. 2 . It provides sm ooth Ward Leonard perform ance w ith faster p lu ggin g.. INDEPENDENT PROPEL DRIVE — elim inates all mechanical clutching — pro vides faster move up.. 3 . It reduces p ea k pow er dem ands . . . low ers pow er costs.. WORM DRIVEN CROWD — smoother, faster, more responsive.. 4 . It elim inates the custom ary slipfriction h oist clutch . . . there is far le ss wear.. FILTERED AIR CAB—provides only clean air for cooling motors and generators.. LEADING. THE. WAY. ELECTRICAL EQUIPMENT—all designed. IN. ELECTRIC. specifically for shovel service — not adapted for it. ALL WELDED CONSTRUCTION — pro vides greater strength for maximum shock resistance and perm anent align ment of machinery. •. •. •. P&H's A d d ed Values are all d irected toward the sam e basic ob jective . . . to insure steadier, m ore d ep en d able d ig g in g in the op en p it at a low er cost per ton. D etails on this P&H M odel 1 6 0 0 E lectric S h o v el are yours for the asking.. ELECTRIC SH O VELS 4 S 4 0 W . N a t io n a l A r e . M i lw a u k e e 1 4 , W ie .. [ A R IV IS C H L F E G EJ Cjtt R P O W A T I O ftf UWWB •1UITKati»•IKt~KC(4'. SHOVEL. DEVELOPMENTS.

(35) EX C E LL E N T SCH O O L S Y S T EM. 489% P O P U L A T IO N G R O W T H S IN C E 19 00. o. T R EM EN D O U S in d u s t r ia l. California’s population, steadily increasing, offers a tremendous easy-to-reach market. Raw materials . . . minerals, petroleum , lum ber and agricultural products are available in large quantities.. VAST reso u rces. LO W UTILITY. The Golden State is ideally located for Pacific export trade.. R A TES ID EA L LIV IN G C O N D IT IO N S. Hydro-electric power, nearby natural gas and oil fields, a mild all-year clim ate are industrial advantages. Freight transportation facilities are unsurpassed. California is one of elev en western states served by the Union Pacific Railroad.. SPLEN D ID T R A N S P O R T A T IO N F A C ILITIES. to’//. P a c ific. in. For in dustrial expansion, consider C aliforn ia. For d ep en d a b le, allweather transportation, to or from the W est, we suggest —. th e. W e s t”. h e fe a tu r e d in s u c . c eed !n g a d v e r tis c m e n ts in. â. vast opportunity for developm ent awaits industrial and commercial concerns plan ning a w est coast location.. n atural. s ta te s. i. gro w th. P O P U LA R V A C A T IO N R E G IO N. “ U n io n. n. and. a g r ic u l t u r a l. O th e r. r. th is s e rie s .. be Specific -. Union Pacific F or. in fo r m a tio n. U n io n. U N I O N o 45. P A C I F I C THE. STRATEGIC. M IDDLE. a d d ress. I n d u s tr ia l. D e p a r tm e n t,. P a c ific R a ilr o a d , O m a h a 2 , N e b r a s k a .. R A I L R O A D ROUTE. *. F eb ru ary , 1947. •. C O AL AGE.

(36) N 1844, three years before Alexander Graham Bell was born, and long before the first Prairie-Schooner crossed the Mississippi River, John August Roebling’s confidence in the suspension principle of construction so impressed the engineers o f the State of Pennsylvania, that they authorized him to build the world’s first suspension aqueduct. How much is his confidence worth to all the thousands of engineers who followed and to humanity in general that have benefited from his pioneering venture? And how much is the confidence of the John A. Roebling’s Sons Company in the future of American industry worth to you, that keeps Roebling development and Roebling products in the lead? Roebling’s greatest asset is your confidence in Roebling and its confidence in your future. That is why Roebling’s every effort is dedicated to the preservation of this con fidence—your's and Roebling’s.. I. For p e r f o r m a n c e - m i n i n g men turn with confidence to Ro eb lin g M in in g Cables As with any p ro d u ct, th e final lest o f R oebling Mining C ables is p erfo rm an ce. B ut the confi dence w ith which m ining m en specify R oebling cables m eans th eir p erfo rm an ce can be pre dicted— in advance. A typical ex am p le is R o eb lin g R oeclad P o rt able Cable, w idely used o n p o rta b le m ining iquipm ent. I t ’s m ad e o f th e finest available m aterials. . . in single o r m u ltip le c o n d u c to rs.. . n a wide ran g e o f sizes . . . w ith o r w ithout. ground w ires. I t’s soundly designed an d engi neered to resist im pact an d crushing. It is the best R oebling know s ho w to m ake. A nd n o t only th e cable co m m an d s y o u r con fidence, fo r a t R oebling p ro d u ct an d service go h an d in hand. E xperienced engineering service wall help you get o il th e dependability an d lo n g life you pay fo r. J u s t call o u r nearest branch office an d talk to y o u r R oebling Field Engineer.. J O H N A . R O E B L I N G ’S S O N S C O M P A N Y TRENTON. 2, N E W. JE R S E Y. B ra n ch es a n d W a re h o u se s In P rin c ip a l C itie s. M a n u fa c t u r e r s o f W ir e R o p e a n d S t r a n d • F itt in g s • S lin g s • S cre e n , H a r d w a r e a n d I n d u s tr ia l W ir e C lo t h • A e r i a l W ir e R o p e S ystem s • H a r d , A n n e a le d o r T e m p e r e d. R O E B L IN G. H ig h a n d L o w C a r b o n F in e a n d S p e c ia lt y W ir e , F la t W ir e , C o ld R o lle d S t r ip a n d C o ld R o lle d S p r in g S te e l. * S k i L ifts • E le c t r ic a l W ir e a n d C a b l e. •. S u s p e n s io n. M id g e s a n d C a b le s • A ir c o r d , A i r c o r d T e r m in a ls a n d A i r C o n t r o ls • L a w n M o w e r s. A. CENTURY OF CONFIDENCE ( Ü I i.

(37) ........ T T-- -. —. --. ■■. .;. - ; 1•. ...... ... .. A com plete line of standardized types in. STEEL. BROnZE. IRI. in series 150 to 1500. C a s t S te e l F ittin g s. 150 L b M a l le a b l e Iro n. S te e l W e l d i n g F ittin g s 1 50 L b a n d 3 0 0 L b W a ls e a l e n d s. F o r g e d S te e l F la n g e s. 3 ,0 0 0 L b O . W . G . , W o ls e a l e n d s. W alw orth’s com prehensive line of pipe fittings is m ade in a ,wide range of typ es and sizes to m eet every piping require. LABORATORY. CONTROL. m ent. A few of the m any regular W alworth fittings are illus trated above. All W alworth fittings are m ade to the highest standards of quality, both as to dim ensional accuracy and m etallurgical properties. In design, construction, and perform ance, th ey reflect W alw orth’s 103 years’ experience in the m anufacture of quality valves and fittings. For detailed inform ation on W alw orth’s com plete line of valves, fittings, and pipe w renches, see your local W alworth distributor or write for a free copy of Catalog 42.. T o a ssu re strict a d h e r e n c e to s p e c ific a t io n s , sa m p le te st b a r s o f th e m e ta ls fr o m w h ic h W a lw o r t h P ip e F itt in g s a r e m a d e a r e s u b je c te d to r e g u la r. W A L W O R T H v a l v e s ^ AND. f i t t i n g s. 60 E A S T 4 2 n d ST., N E W Y O R K. D I S T R I B U T O R S 48. IN. te s tin g. in. W a lw o r t h. la b o r a t o r ie s. These. and. o th e r r e g u la r c o n tr o ls a n d in s p e c tio n s a s s u re th e h ig h The. q u a lit y. of. illu s t r a t io n. a ll. W a lw o r t h. sh o w s. a. te st. P ip e. on. a. F ittin g s . cast. ir o n. tra n s v e rs e b a r.. 17. N . Y.. P R I N C I P A L. C E N T E R S. T H R O U G H O U T. THE. F e b ru a r y , 1947. WO R L D •. CO AL AGE.

(38) The G ulf Lubrication Engineer in the picture (right) recommended the proper lubricants and methods of application for this new loading ma chine, just installed in a prom inent Kentucky mine.. ^ T A R T your new mechanized equipment out. quality' lubricants— are available to you through. right— have a G ulf Lubrication Engineer "in. 1200 warehouses located in 30 states from Maine. the picture” just as soon as it’s delivered. This trained specialist w ill check over every. to N ew Mexico. W rite, wire, or phone your nearest Gulf office today.. unit, then recommend the proper oils and greases which w ill provide an extra margin of lubrication efficiency. You w ill find that this progressive approach to effective lubrication results in better machine performance, less wear, lower maintenance costs, and extra years of useful life. The helpful counsel of a Gulf Lubrication Engineer— and the Gulf line of more than 400 COAL A G E. •. F ebruary. 1947. Gulf Oil Corporation * Gulf Refining Company Division Sales Offices: Boston • N ew York • Philadelphia ■ Pittsburgh • Atlanta N ew O rlea ns • Houston • Louisville • Toledo.

(39) TRI M Y O U R L O A D S EET ROAD CONDITIONS?. hauls huge p a y l o a d s in A N Y running conditions. . . . on the road or off the road. D IFFIC U L T running conditions need n ot lim it th e size o f your trucks or your payloads— either on th e shovel-to-p lant run or in hauling over burden. W alter T ractor Trucks, w ith th e great power and traction o f th e 4-P oint P o sitiv e D rive, are h au l ing 30 to 60-ton payloads in the soft, w et, slippery surfaces and steep grades m et in open p it m ining. I t is im portant to n ote th a t these huge loads are hauled w ith th e speed o f sm aller trucks; w ith easy, safe m aneuvering and handling; and w ith ou t tearing up your roads.. ferentials which proportion torque to each wheel according to its traction, elim inating w heel-spin; suspended double reduction drive for larger gear capacity, less unsprung w eight, less bouncing and jouncing on roads; engine-ahead-of-w heels for shorter wheelbase, better w eight distribution; hydraulic steering, powerful air brakes; engines from 125 hp. to 350 hp-. W R IT E for d e ta ile d lite r a tu r e on W alter Tractor Trucks a n d facts a b o u t th e ir re c o rd in op en p i t m in in g .. A m o n g th e fe a tu r e s c o n tr ib u tin g to th is perform ance are: Three autom atic locking dif-. WALTER MOTOR TRUCK C0»Ridgewood 27, Queens, 50. i., N.Y.. F e b ru a ry , 1347. •. COAL AGS.

(40) SUMP PUMPS Kee p_Pumpin gj . . . Improved. Lubrication. Assures Peak Efficiency In Sum p Pum ps, the impeller shaft bearings are the m ost v u l nerable parts, w ith prem ature failure causing u n d u e job delay and ex p en se. T hor safeguards th ese vital points by a large grease reserve that is force-fed under co n tin u o u s air pressure— pressure that further prevents foreign m atter from w orking into the bearings. B ecause o f this exclusive feature, T hor P um ps can be operated c o n tin u o u sly up to a full sh ift w ith ou t regreasing. T hor Sum p Pum ps are designed to operate efficiently in clean or dirty water; in oil, sludge or sew age— eith er partially or fullysubm erged. Y our nearby T hor D istributor w ill gladly dem onstrate th em as the econ om ical answ ers to you r sum p-w ater problem s. INDEPENDENT 600 Birm ingham Houston St. Louis. Boston. Buffa lo. Los A n g e le s St. P a u l. PNEUMATIC. W . Ja ckso n. M ilw a u k e e Sa lt L ak e C ity. TOOL. B lv d . , C h i c a g o Cincinnati. C le v e la n d. N e w Y o rk S a n Francisco. C OM P ANY. 6, I llin o is D e n ve r P hila d e lp h ia Toronto, C a n a d a. Detroit Pittsburgh. London, E n g la n d. PORTABLE POWER. PNEUMATIC. COAL AG E. TOOLS • UNIVERSAL. • F ebruary, 1947. AND. HI GH. FREQUENCY ELECTRIC. T00LS*MINING. AND. CONTRACTORS TOOLS 51.

(41) I Itiiiiiiifi P. ^. ''-w, > > ^ ■■ •■• .-out -' ;, - ;' ^ ^ € £ S r ' . :■$$!<!:'. m. «**?»* in. lUkfiAt tint g o in g gttto to u g k ... You need a man like this. He’s your Coal Field Supply Special ist. He know s that your coal m ust be m oved fast and efficiently. He knows, too, that you can’t afforji to run the risk of costly shutdow ns caused by inefficient conveyor belting or m achinery. That's w hy you can count on him to recom m end equipm ent that w ill w ithstand severe punishm ent . . . carry more tons per dollar. W hen you have to m ove heavy loads of coal, for exam ple, he w ill recom m end A jax Underground Conveyor B eltin g and Robins M ine Conveyors. T hey’re “Job-E ngineered” by H ew itt-R obins to w ithstand impact loading of ru n -of-m in e or sized coal. You see, H ew itt-R obins offers you com plete m aterials handling service . . . backed by a single source and single responsibility for both conveyor m achinery and belting. So, before the going gets tough, call your Coal F ield Supply Spe cialist. He w ill recom m end the H ew itt belting best suited to do your job cheaper, faster, and better.. Specify “H ewitt” . . . Phone the Hewitt distributor listed in the classified section of your phone directory. Or write to Hewitt Rubber of Buffalo, 240 Kensington Ave., Buffalo 5, N. Y.. Ajax Underground Conveyor Belting. H EW ITT R U B B E R U o OF B U F F A L O. juu. D ivisio n o f H e w itf-R o b in s In c o rp o ra te d 'J O B -E N G IN E E R E D ". IN D U S T R IA L. H O SE. .. P A C K IN G. BELTING. F ebruary, 1947. •. COAL AGE.