Related by context. Frequent words. (Click for all words.) 53 Columbia Gas Transmission 52 Chesapeake Energy 51 fracking fluid 51 Marcellus shale 51 Marcellus Shale 50 Marcellus Shale drilling 50 Kleen Energy Systems 49 Marcellus Shale formation 49 natural gas 49 compressor stations 49 PENNDOT 49 contaminating groundwater 48 GeoMet 48 hydrofracking 48 Motiva Enterprises 48 Nitro Petroleum 48 CNX Gas Corporation 48 Marcellus wells 47 lucrative Marcellus Shale 47 SunCoke 47 DEP 47 Nockamixon 47 Suburban Propane 47 Exco Resources 47 Sunoco Logistics 47 Coeur Alaska 47 Kleen Energy 46 Yuzhkuzbassugol 46 MOEX Offshore 46 Tilcon 46 PBS Coals 46 Kleen Energy plant 46 Appalachian basin 46 COGCC 46 hydraulic fracturing 46 CNX Gas 46 Consol Energy 46 Rulison 45 Equitable Gas 45 Avella 45 CONSOL 45 Bharat Coking Coal 45 N Viro International 45 coal slurry 45 coalbed methane 45 Berwind 45 Marcellus Shale wells 45 Natural Gas 45 drillers 45 MarkWest 44 Lisburne 44 Noxen 44 fracking 44 OAO Lukoil 44 injection wells 44 OMDA Oil 44 Marcellus 44 Vanguard Natural Resources 44 gallon propane tank 43 fracking fluids 43 highly combustible methane 43 DCP Midstream 43 Gas Storage 43 GeoPetro 43 flowback 43 EOG Resources Inc. 43 Geospatial Holdings 43 Allegheny Ludlum 43 Appalachian Basin 43 Coal 43 Newfield Exploration Company 43 Petrosearch 43 Petro Reef 43 gas 43 Range Resources 42 Quecreek Mine 42 EnCana 42 Saudi Refining 42 wells 42 CONSOL Energy 42 Mariner Energy 42 Environmental Protection DEP 42 coal seam 42 Alaska Prudhoe Bay 42 Fallowfield Township 42 polluted groundwater 42 Cabot Oil 42 fracing 42 TexCom 42 Encana 42 shale 42 drilling 42 Dewatering 42 Intermountain Gas 42 Crosstex Energy 42 Pipe Line 42 mine subsidence 42 Newfield Exploration Co. 42 ConocoPhillips COP.N 42 AmerGen 42 Susquehanna