01716nam 2200385Ka 450 991069688650332120080722102850.0(CKB)5470000002382013(OCoLC)234381631(EXLCZ)99547000000238201320080722d2002 ua 0engtxtrdacontentcrdamediacrrdacarrierEvaluation of explosion-resistant seals, stoppings, and overcast for ventilation control in underground coal mining[electronic resource] /by Eric S. Weiss, Kenneth L. Cashdollar, and Michael J. SapkoPittsburgh, Pa. :U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory,[2002]iii, 48 pages digital, PDF fileReport of investigations ;9659Title from title screen (viewed on July 18, 2008)."December 2002."Mine ventilationEquipment and suppliesMine explosionsPreventionMine ventilationEquipment and supplies.Mine explosionsPrevention.Weiss E. S(Eric S.)1386102Cashdollar Kenneth L1387560Sapko M. J1386391Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health)GPOGPOBOOK9910696886503321Evaluation of explosion-resistant seals, stoppings, and overcast for ventilation control in underground coal mining3486555UNINA