01453nam 2200349Ka 450 991069675120332120080715163111.0(CKB)5470000002381360(OCoLC)233823889(EXLCZ)99547000000238136020080714d1999 ua 0engtxtrdacontentcrdamediacrrdacarrierMaterial properties affecting the stability of a 50-year-old rock dump in an active mine[electronic resource] /D.R. Tesarik and R.W. McKibbinPittsburgh, 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, Pittsburgh Research Laboratory,[1999]22 pages digital, PDF fileReport of investigations ;9651Title from title screen (viewed on July 11, 2008)."December 1999."Mine fillingMine filling.Tesarik D. R(Douglas R.)1405841McKibbin R. W(Robert W.)1405842Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health)GPOGPOBOOK9910696751203321Material properties affecting the stability of a 50-year-old rock dump in an active mine3483134UNINA