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Showing: 1 to 10 of 823 matches for "li,e stone rock dust"  Page   1   2   3   4   5   6   7   8   9  next TITLE Tests Of Salt As A Substitute For Rock Dust In The Prevention Of Coal-Dust Explosions In Mines ? Introduction  SUMMARY ... Pi tt sburgh c ol and li Gtono dust G ... 51 Associat e physi cist, Bureau of Mi nes. ... ficient than rock dust and that could raplace it wholly or in rt asa muans ... AUTHOR Greenwald, H. P. PUBLISHED 1940 TITLE Tests Of Salt As A Substitute For Rock Dust In The Prevention Of Coal-Dust Explosions In Mines ? Introduction  SUMMARY ... Pi tt sburgh c ol and li Gtono dust G .•... Effect of salt on the ... foctivo than rock dust nmst cOD1IM.nd a tt ... e>""Ponsivo t han is common sn1t . ... AUTHOR Greenwald, H. P. PUBLISHED 1940 TITLE The Effectiveness Of Different Size Rock Dusts In Preventing Coal-Dust Explosions In Mines ? Foreword  SUMMARY ... " .. . E,L-qz,y 5TUDIS OF ROC'C-DUST G AND THE SIZE OF ROC· T .. • Tests nd ltrr.1ted trila of stone d at or roCk dUst for extinguish- • ... AUTHOR Rice, G. S. PUBLISHED 1930 TITLE Tests Of A Barrier Using Rock Dust In Paper Bags ? Origin Of Investigation  SUMMARY ... and untreat ed li mestone dust ... corpor- ation visited the authors at the Bureau'e Experimentd coal ... cuss a rock-dust barrier he had invented primakily for use ... AUTHOR Greenwald, H. P. PUBLISHED 1938 TITLE Tests Of A Barrier Using Rock Dust In Paper Bags ? Origin Of Investigation  SUMMARY ... and untreat ed li mestone dust ... the best i nsurance agai nst ignition of coal dust and spr ead of incipient coal-dust expl osions ... omplet e rock- dusting is thoh ... AUTHOR Greenwald, H. P. PUBLISHED 1938 TITLE The Effectiveness Of Different Size Rock Dusts In Preventing Coal-Dust Explosions In Mines  SUMMARY ... " .. . E,L-qz,y 5TUDIS OF ROC'C-DUST G AND THE SIZE OF ROC· T .. • Tests nd ltrr.1ted trila of stone d at or roCk dUst for extinguish- • ... AUTHOR Rice, G. S. PUBLISHED 1930 TITLE The Selection of Gravels for use on Unsealed Access Roads  SUMMARY ... The Aus.IMMlI.E. Aust ... Gravel material from the volcanic rock areas gave consistently higher plasticity ... The stone hardness in the volcanic colluvium deposits was ... PUBLISHED 1982 TITLE Quarrying And Crushing Methods And Costs At The Avon Mountain Trap Rock Quarry Of The Atlas Sand, Gravel & Stone Co., West Hartford, Conn. - Introduction  SUMMARY ... or wi til products of surf"ace e'rosion. ... feet of the ledge was alrea dy highly fra ctured, mak- li ng r ... about 1 cubic yard for each 18 tons of stone re- 'cover ... AUTHOR Dunning, John S. PUBLISHED 1936 TITLE Mining Program, Bureau Of Mines Oil-Shale Project. Rifle, Colo.  SUMMARY ... stration plants to ·.roduce synthetic· li quid f uels from coal ... the roof stone were 't ested at th Bureau of ... eas of drill cutt ings also wor e ·.det ermined ... AUTHOR Gardner, E. D. PUBLISHED 1948 TITLE Geology in Quarrying  SUMMARY ... wll"el,e • d q".9le h.ole ... " "Li&-t-'-'-D ( r" 9f\ t rne.t c:rl) ... One approach for the quarryman is "if someone wants to buy the stone then it must be good ... PUBLISHED 1978 Showing: 1 to 10 of 823 matches for "li,e stone rock dust"  Page   1   2   3   4   5   6   7   8   9  next Search Again