01377oam 2200409 a 450 991070058190332120110803102434.0(CKB)5470000002410175(OCoLC)744579118(EXLCZ)99547000000241017520110803d2011 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierRe-issue of P07-20[electronic resource] change to respirable dust data card-addition of pre-weight date[Arlington, Va.] :[U.S. Dept. of Labor, Mine Safety and Health Administration],[2011]1 online resource (3 pages)Program information bulletin ;no. P11-23Title from title screen (viewed on August 1, 2011)."Issue date 4/06/2011."Re-issue of P07-20 Mine safetyUnited StatesMine dustsUnited StatesCoal mines and miningDust controlUnited StatesMine safetyMine dustsCoal mines and miningDust controlUnited States.Mine Safety and Health Administration.GPOGPOGPOBOOK9910700581903321Re-issue of P07-203476290UNINA