01631oam 2200469Ia 450 991070160110332120120308135217.0(CKB)5470000002419072(OCoLC)759599845(EXLCZ)99547000000241907220111104d2011 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierField-use early-strength shotcrete test system[electronic resource][Pittsburgh, PA] :Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health,[2011]1 online resource (2 unnumbered pages) color illustrationsTechnology news ;no. 541DHHS (NIOSH) publication ;no. 2011-186Title from PDF caption (viewed Mar. 8, 2012)."June 2011."Field use early strength shotcrete test systemShotcreteTestingMine roof controlGround control (Mining)Mine safetyTestingMining engineeringShotcreteTesting.Mine roof control.Ground control (Mining)Mine safetyTesting.Mining engineering.National Institute for Occupational Safety and Health.HNCHNCGPOBOOK9910701601103321Field-use early-strength shotcrete test system3188798UNINA