01528nam 2200385Ia 450 991069640770332120080403145143.0(CKB)5470000002378769(OCoLC)218493099(EXLCZ)99547000000237876920080403d1998 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierAnalysis of hangups and structural failure in underground mine ore passes[electronic resource][Spokane, WA] :U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health,[1998]2 unnumbered pages digital, PDF fileTechnology news / NIOSH ;no. 470Title from title screen (viewed on Mar. 10, 2008)."February 1998."Mine safetyUnited StatesMine accidentsResearchUnited StatesMine roof controlUnited StatesEquipment and suppliesMine safetyMine accidentsResearchMine roof controlEquipment and supplies.Spokane Research Laboratory (National Institute for Occupational Safety and Health)GPOGPOBOOK9910696407703321Analysis of hangups and structural failure in underground mine ore passes3163114UNINA