01909nam 2200445Ia 450 991069643920332120080331135914.0(CKB)5470000002378451(OCoLC)216865768(EXLCZ)99547000000237845120080331d1999 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierProceedings of the Second International Workshop on Coal Pillar Mechanics and Design[electronic resource] /edited by Christopher Mark ... [and others]Pittsburgh, PA :U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occuptional Safety and Health, Pittsburgh Research Laboratory,[1999]192 pages digital, PDF fileInformation circular ;9448DHHS (NIOSH) publication ;no. 99-114Title from title screen (viewed on Mar. 25, 2008)."June 1999.""The workshop was held in Vail, CO, on June 6, 1999, in association with the 37th U.S. Rock Mechanics Symposium"-Abstract, p. 1.Includes bibliographical references.Second International Workshop on Coal Pillar Mechanics and DesignPillaring (Mining)CongressesGround control (Mining)CongressesCoal mines and miningCongressesConference papers and proceedings.lcgftPillaring (Mining)Ground control (Mining)Coal mines and miningMark Christopher1408674GPOGPOBOOK9910696439203321Proceedings of the Second International Workshop on Coal Pillar Mechanics and Design3493140UNINA