01268nam 2200325Ka 450 991069640800332120080403143030.0(CKB)5470000002378766(OCoLC)218474771(EXLCZ)99547000000237876620080403d1997 ua 0engtxtrdacontentcrdamediacrrdacarrierWood crib performance model[electronic resource][Pittsburgh, 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,[1997]2 unnumbered pages digital, PDF fileTechnology news ;no. 467Title from title screen (viewed on Mar. 10, 2008)."November 1997."Coal mines and miningUnited StatesSafety measuresComputer programsCoal mines and miningSafety measuresComputer programs.Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health)GPOGPOBOOK9910696408003321Wood crib performance model3163117UNINA