Related by context. Frequent words. (Click for all words.) 49 MSHA 47 Mine Safety 46 CONSOL 45 Darby Mine 45 Sago miners 44 NIOSH 44 PENNDOT 43 UMWA 43 Kasunic 43 Aracoma 43 Kennecott 42 Oppegard 42 Quecreek 42 OSHA 42 Allegheny Ludlum 41 miners 41 Surface Mine 41 Sheptor 41 DEP 41 PBS Coals 40 WCI Steel 40 mine 40 coal mines 40 Yuzhkuzbassugol 40 Stickler 39 IOSHA 39 coal mine 39 Manchin 39 Ormet 39 Jerritt Canyon 39 Randal McCloy 39 Mine Workers 39 Oglebay Norton 39 Bushong 39 Labor Occupational Safety 39 Gov. Joe Manchin 39 AK Steel 39 longwall mining 39 Sago 39 Grogg 39 Brimmeier 39 PennDOT 39 Tomblin 39 AmerGen 38 ActiveMine 38 Governor Joe Manchin 38 SunCoke 38 O'Dell 38 CNX Gas 38 DEQ 38 Marcellus Shale Coalition 38 Jeff Gillenwater 38 Feickert 38 PureSafety 38 mines 38 Sago mine disaster 38 Gillenwater 38 coal miners 38 Weirton Steel 38 Repace 38 Crandall Canyon 38 safety 37 ODNR 37 Louviere 37 Consol Energy 37 Mine 37 Whittall 37 Massey Energy 37 mine subsidence 37 longwall 37 ADEQ 37 Consol 37 CONSOL Energy 37 Mundy 37 Shenango 37 CDPHE 37 Alpha Natural Resources 37 COGCC 37 Lipford 36 Sago Mine 36 Bresland 36 Gunnoe 36 Sago Mine disaster 36 Equitable Gas 36 Safety 36 Coal Mine 36 Hecla Mining Co. 36 Xstrata Coal 36 coalmine 36 Patriot Coal 36 Siptroth 36 Auvil 36 NUM 36 Quaker Chemical 36 Aquarius Platinum 36 Arch Coal 36 CSXT 36 Assmang 36 coalmines 36 MHSA 36 Crandall Canyon mine