01396nam 2200361 450 991070565390332120170516092400.0(CKB)5470000002451858(OCoLC)987300843(EXLCZ)99547000000245185820170516d2013 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierTemporary suspension of MSHA approval of the 50 psi Minova Gob Isolation Tekseal design[Arlington, Va.] :[U.S. Department of Labor, Mine Safety and Health Administration],2013.1 online resource (2 unnumbered pages)Program information bulletin ;no. P13-02"Issue date 03/18/13."Temporary suspension of Mine Safety and Health Administration approval of the 50 psi MINOVA Gob Isolation Tekseal design.Mine safetyUnited StatesMine ventilationUnited StatesEquipment and suppliesMine safetyMine ventilationEquipment and supplies.United States.Mine Safety and Health Administration,GPOGPOBOOK9910705653903321Temporary suspension of MSHA approval of the 50 psi Minova Gob Isolation Tekseal design3342925UNINA