Related by context. Frequent words. (Click for all words.) 62 Marcellus Shale formation 60 Marcellus shale 57 Marcellus Shale 51 Appalachian Basin 47 Fayetteville Shale 47 shale 46 coal seams 45 Hydraulic fracturing 45 shale gas 44 coal seam 44 Marcellus 44 hydraulic fracturing 44 Haynesville shale 44 Bakken formation 44 Marcellus Shale drilling 44 fracking 43 hydrofracking 43 shale formations 43 shale deposits 42 Barnett Shale 42 drillers 42 Bakken Shale 42 Woodford Shale 42 coalbed methane 42 Fracking 41 Marcellus Shale Coalition 41 Uinta Basin 40 sedimentary rock 40 shales 40 Haynesville Shale 39 CNX Gas 39 subsalt 39 horizontal drilling 39 Roan Plateau 38 Pinedale Anticline 38 bed methane 38 natural gas 38 Chesapeake Energy 37 coal mine 37 Montcoal 37 Piceance Basin 37 Williston Basin 36 coal mining 36 underground aquifers 36 exploratory drilling 36 COGCC 36 Tupi field 36 Ford Shale 36 mining 36 spokeswoman Kendra Barkoff 36 methane 36 geologic formations 36 mineral 36 Shelley Moore Capito 36 frack 36 Austin Chalk 35 geological formations 35 Granite Wash 35 Surat Basin 35 longwall mining 35 mountaintop mining 35 mineral extraction 35 aquifers 35 drilling 35 Appalachians 35 oil sands 35 Ogallala Aquifer 35 Arkoma Basin 35 hydrocarbon 35 Outer Continental Shelf 35 anthracite coal 35 AmeriLithium 35 windfall profits 35 Santos Basin 35 Haynesville 35 Consol Energy 35 geologic 35 undrilled 35 Campos Basin 34 XTO Energy Inc. 34 underground aquifer 34 Surface Mining 34 outer continental shelf 34 EnCana 34 Piceance 34 mountaintop removal 34 relatively unexplored 34 EXCO Resources Inc. 34 Lease Sale 34 hydrocarbons 34 mineral riches 34 Niobrara 34 mother lode 34 fracing 34 Powder River Basin 34 geologically 34 Oil Shale 34 Range Resources 33 Joe Manchin 33 Montney 33 coalfields