01570oam 2200421 a 450 991070056840332120111202113108.0(CKB)5470000002410311(OCoLC)765922226(EXLCZ)99547000000241031120111202d2010 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierBreathable air, air-monitoring and harmful gas removal components for use in refuge alternatives consisting of 15-psi stoppings[electronic resource][Arlington, Va.] :[U.S. Dept. of Labor, Mine Safety and Health Administration],[2010]1 online resource (10 unnumbered pages) color illustrationsProgram information bulletin ;no. P10-21Title from title screen (viewed on Dec. 2, 2011)."Issue date: 12/09/2010."Mine rescue workSafety measuresMine ventilationMine safetyUnited StatesMine accidentsMine rescue workSafety measures.Mine ventilation.Mine safetyMine accidents.United States.Mine Safety and Health Administration.GPOGPOGPOBOOK9910700568403321Breathable air, air-monitoring and harmful gas removal components for use in refuge alternatives consisting of 15-psi stoppings3180212UNINA