02011nas 2200565-a 450 991069343200332120240111213018.02169-7337(OCoLC)700286778(CKB)2560000000094067(CONSER)--2011230307(EXLCZ)99256000000009406720110203b20012008 -a- aengur|||||||||||txtrdacontentcrdamediacrrdacarrierCoal contractor mining factsPittsburgh, PA National Institute for Occupational Safety and Health-20111 online resource (volumes)DHHS (NIOSH) publicationDHHS publication.Coal contractorsCoal mines and miningUnited StatesStatisticsPeriodicalsContractors' operationsUnited StatesStatisticsPeriodicalsCoal mine accidentsUnited StatesStatisticsPeriodicalsMine safetyUnited StatesStatisticsPeriodicalsCoal mine accidentsfast(OCoLC)fst00865301Coal mines and miningfast(OCoLC)fst00865355Contractors' operationsfast(OCoLC)fst00876957Mine safetyfast(OCoLC)fst01022140United Statesfasthttps://id.oclc.org/worldcat/entity/E39PBJtxgQXMWqmjMjjwXRHgrqPeriodicals.fastStatistics.fastStatistics.lcgftCoal mines and miningContractors' operationsCoal mine accidentsMine safetyCoal mine accidents.Coal mines and mining.Contractors' operations.Mine safety.553.21National Institute for Occupational Safety and Health.JOURNAL9910693432003321Coal contractor mining facts3204951UNINA