01856oam 2200505zu 450 991069830700332120210807002451.01-61583-951-8(CKB)3240000000001700(SSID)ssj0000680649(PQKBManifestationID)11394419(PQKBTitleCode)TC0000680649(PQKBWorkID)10627435(PQKB)11242622(WaSeSS)Ind00030477(OCoLC)228142525(EXLCZ)99324000000000170020160829d2007 uy engur|||||||||||txtccrProceedings of the international workshop on rock mass classification in underground mining[Place of publication not identified]U S Department of Health and Human Services CDC/NIOSH Office of Mine Safety and Health Research20071 online resource (162 p.)Information circular ;9498DHHS (NIOSH) publication ;no. 2007-128Bibliographic Level Mode of Issuance: MonographIncludes bibliographical references.Mechanical EngineeringHILCCEngineering & Applied SciencesHILCCMining EngineeringHILCCConference papers and proceedings.lcgftMechanical EngineeringEngineering & Applied SciencesMining EngineeringPakalnis Rimas ThomasMark ChristopherPittsburgh Research Laboratory (National Institute for Occupational Safety and Health)PQKBBOOK9910698307003321Proceedings of the international workshop on rock mass classification in underground mining3176257UNINA