01713oam 2200493I 450 991070566870332120170510123928.0(CKB)5470000002451708(OCoLC)986528254(OCoLC)995470000002451708(EXLCZ)99547000000245170820170510d1942 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierStemming in metal mines progress report 5Comparison of dust and gases produced from blasting charges of dynamite in drill holes, in bombs, and in mud-cap shots /by John A. Johnson and Wing G. Agnew[Washington, D.C.] :U.S. Department of the Interior, Bureau of Mines,1942.10 pages (some folded) ;27 cmR. I. ;3673"December 1942."At head of title: United States Department of the Interior, Bureau of Mines.As of 05/10/2017, GPO could not validate the distribution status of this title for the FDLP.Includes bibliographical references.Stemming in metal mines BlastingMine safetyBlastingfastMine safetyfastBlasting.Mine safety.Blasting.Mine safety.Johnson John A(John Albert),1896-1398682Agnew Wing G.United States.Bureau of Mines,GPOGPOGPOBOOK9910705668703321Stemming in metal mines3537933UNINA