01514oam 2200409 a 450 991070137660332120170512100646.0(CKB)5470000002417299(OCoLC)776641294(EXLCZ)99547000000241729920120214d2011 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierPotential shock and ignition hazard involving permissible and non-permissible battery-powered machines[Arlington, Va.] :[U.S. Dept. of the Interior, Mine Safety and Health Administration],[2011]1 online resource (3 pages) color illustrationsProgram information bulletin ;no. P11-52Title from title screen (viewed on Feb. 14, 2012)."Issue date: 11/28/2011."Coal-mining machinerySafety regulationsUnited StatesCoal mines and miningUnited StatesSafety measuresCoal-mining machinerySafety regulationsCoal mines and miningSafety measures.United States.Mine Safety and Health Administration.GPOGPOOCLCQOCLCOOCLCQGPOBOOK9910701376603321Potential shock and ignition hazard involving permissible and non-permissible battery-powered machines3128887UNINA