Related by context. Frequent words. (Click for all words.) 47 Tony Oppegard 45 Rostekhnadzor 45 J. Davitt McAteer 44 Coal Mine Safety 43 Suboleski 43 MSHA 43 Davitt McAteer 42 Mine Safety 40 Gene Kitts 40 industrial hygienist 40 Surface Mining Reclamation 40 Bresland 40 Safety Advisory Panel 39 Utah Crandall Canyon 38 Surface Mining 38 Yuzhkuzbassugol 38 Massey Aracoma Alma 38 Luke Popovich 38 Oppegard 37 Luo Lin 36 CHARLESTON W.Va. Massey 36 Shanxi provincial 36 Chemical Safety 36 Elizabeth Birnbaum 36 Appalachian Voices 36 UMWA 36 spokesman Erik Ablin 36 Safety Administration 36 Ken Hechler 36 Darby Mine 36 Jeff Gillenwater 35 Vittitow 35 Xinxing 35 Clarence Ditlow 35 Mine Workers 35 Mineworkers Union 35 Quecreek 35 Jay Rockefeller 35 Occupational Safety 35 Senator Jay Rockefeller 35 Safety 35 Quality Supervision 35 Monongah 35 highly combustible methane 35 Administrative Hearing 35 Crandall Canyon 35 spokeswoman Amy Louviere 34 Energy DOE Brookhaven 34 Administration 34 Rosprirodnadzor 34 Bill Caylor 34 Toxicology Program 34 Radiation Control 34 Alan Mollohan 34 NIOSH 34 Seismic Safety 34 asbestos removal 34 Armando Falcon 34 valley fills 34 Barab 34 Labor Occupational Safety 34 MSHA inspectors 34 administrator Sean O'Keefe 34 Congressman Nick Rahall 34 Bevin Boys 34 Environmental Protection 34 Health NIOSH 34 Barbara Harsha executive 33 Mars Surveyor Operations 33 Accident Investigation 33 Randal McCloy 33 Aracoma 33 Michael Bromwich 33 Marsh Fork 33 Mines Minerals 33 Toxic Substances Control 33 MINER Act 33 Quecreek Mine 33 Transportation Safety 33 mine subsidence 33 properly ventilating 33 Pete Dye Classic 33 Watzman 33 Sago Mine 33 CEO Don Blankenship 33 escapeway 32 regulates offshore drilling 32 National Tax Limitation 32 Hobet 32 Taum Sauk 32 BMWU 32 Deborah Hersman 32 Marshall Wythe 32 Sago Mine explosion 32 coal slurry 32 PIKEVILLE Ky. 32 cave ins 32 Gen. Lisa Madigan 32 NRC 32 IOSHA 32 Professional Licensure