Related by context. Frequent words. (Click for all words.) 68 CONSOL Energy 59 Arch Coal 58 Consol 57 Alpha Natural Resources 55 Peabody Energy 55 Chesapeake Energy 54 Massey Energy 51 Allegheny Energy 50 Mylan 48 Cliffs Natural Resources 48 Dominion Resources 48 AK Steel 47 Coal 47 Allegheny Technologies 47 Norfolk Southern 46 FirstEnergy 45 Allegheny 45 Alcoa 44 Range Resources 44 Susquehanna 44 Cleveland Cliffs 43 coal 43 FirstEnergy Corp. 43 PPL 43 Cinergy 43 Vectren 43 Wheeling Pitt 42 Weirton 42 ArcelorMittal 42 coal mining 42 MSHA 42 Canonsburg 42 Suncor Energy Inc. 42 ConocoPhillips 42 Exelon 42 Massey 42 Steel Dynamics 42 Appalachian Power 42 coal mine 41 Sago Mine 40 Monongahela 40 coal mines 40 metallurgical coal 40 Anadarko Petroleum Corp. 40 West Virginia 40 PNC Park 40 PPG Industries 40 Cedar Fair 40 Rio Tinto 39 Exelon Corp. 39 Suncor Energy 39 Dominion 39 Upper St. Clair 39 Charleston W.Va. 39 Highmark 39 Cameco 39 coal miner 39 Barrick Gold Corp. 39 Lewisburg 39 Dynegy 38 Wheeling 38 coal miners 38 Dick Sporting Goods 38 Fayette County 38 Barrick Gold 38 Constellation Energy 38 EQT 38 Chevron Corp. 38 Mittal Steel 38 Pennsylvania 38 Harmony Gold 38 Mechel 38 Progress Energy 38 drillers 38 Bucyrus 38 Fayette 38 Cephalon 37 PNC Financial 37 Encana 37 NRG Energy 37 Lackawanna County 37 Morgantown W.Va. 37 Gov. Ed Rendell 37 Kinder Morgan 37 BHP Billiton Ltd. 37 Pittsburgh 37 Mine Safety 37 Marcellus Shale 37 Slippery Rock 37 Lycoming 37 Beckley 37 Johnstown 37 Scranton Wilkes Barre 37 Morgantown 37 AEP 37 Tyson Foods Inc. 37 Latrobe 37 Greenbrier 37 Pa. 37 Sunoco 37 Smithfield Foods