Related by context. Frequent words. (Click for all words.) 64 Marcellus Shale 64 Marcellus shale 55 hydraulic fracturing 54 fracking 52 coalbed methane 51 Marcellus 48 drillers 48 DEP 47 bed methane 47 horizontal drilling 47 coal mining 47 shale gas 47 shale 47 Barnett Shale 47 Gov. Ed Rendell 47 drilling 45 Pennsylvania 45 oilsands 44 PennDOT 44 oil sands 43 natural gas 43 Onorato 43 farmland preservation 42 Rendell 42 Environmental Conservation 42 Gov. Rendell 42 Luzerne 42 mountaintop removal 42 Trout Unlimited 42 Allegheny 42 Northeastern Pennsylvania 42 Hazleton 42 mining 41 North Slope 41 Luzerne County 41 Appalachian Basin 41 Tom Corbett 41 Tioga 41 Pennsylvanians 41 Monongahela 41 northeastern Pennsylvania 41 Powder River Basin 40 coal seam gas 40 Haynesville Shale 40 coal 40 Nanticoke 40 offshore drilling 39 Environmental Protection 39 Pittston 39 Lycoming 39 exploratory drilling 39 Hanover Township 39 Old Forge 39 uranium mining 39 wells drilled 39 Chemung County 39 Susquehanna River 39 Susquehanna 39 Governor Rendell 38 wells 38 Gov. Joe Manchin 38 Cabot Oil 38 KDKA 38 Wyoming 38 Harrisburg 38 environmental 38 Ravenstahl 38 Tunkhannock 38 Clairton 38 Haynesville 38 Allegany County 38 drilling rigs 37 Lackawanna County 37 groundwater contamination 37 Encana 37 Range Resources 37 West Virginia 37 DEQ 37 Pennsylvania Turnpike 37 horizontal wells 37 EOG 37 Poconos 37 borough 37 Scranton 37 DNR 37 CBM 37 HARRISBURG 37 tar sands 37 frac 36 coal seams 36 Schuylkill 36 Pinedale 36 Rahall 36 Hempfield 36 deepwater 36 Chesapeake Energy 36 deepwater drilling 36 Southern Tier 36 Barletta 36 MSHA 36 Manchin