Related by context. Frequent words. (Click for all words.) 76 fracking 68 hydrofracking 66 hydraulic fracturing 63 Hydraulic fracturing 53 fracing 53 Marcellus Shale 53 Marcellus Shale formation 53 drillers 51 Gas Drilling 50 Marcellus shale 50 frack 49 shale gas 49 horizontal drilling 48 Shale Gas 48 shale 48 shale formations 47 Eminent Domain 47 Marcellus Shale drilling 47 drilling 47 Tar Sands 47 shale deposits 46 tar sands 45 offshore drilling 45 Marcellus 45 Gasland 45 coalbed methane 45 oil sands 44 Alberta tar sands 44 Offshore Drilling 44 contaminate groundwater 43 categorical exclusions 43 MTBE 43 Oilsands 43 Atrazine 43 mountaintop mining 43 Arctic Refuge 43 Fluoridation 42 Government Shutdown 42 Drilling 42 Barnett Shale 42 contaminate drinking 42 outer continental shelf 42 ANWR 41 Outer Continental Shelf 41 Safe Drinking Water 41 Lease Sale 41 Methane 41 oilsands 41 Gulf Oil Spill 41 Fluoride 41 Carbon Monoxide 41 coal slurry 41 Sludge 40 Spill 40 deepwater wells 40 Cleaning Up 40 Oil Spill 40 Roan Plateau 40 gasoline additive 40 Bakken Formation 40 bed methane 40 extraction 40 Marcellus Shale Coalition 40 hydrofluoric acid 39 Roadless Rule 39 Oil Shale 39 enviros 39 drilling fluids 39 Aspartame 39 tarsands 39 Inhalation 39 NYRI 39 Pebble Mine 39 flowback 39 deepwater drilling 39 NPRA 39 Ethanol 39 Perchlorate 39 Crowdsourcing 39 Polluted 39 longwall mining 39 Haynesville Shale 38 PennFuture 38 Ogallala Aquifer 38 extractive 38 mountaintop removal 38 Superfund Site 38 Toxic 38 Contaminated 38 coal seams 38 dispersants 38 Derailment 38 Inaction 38 Contamination 38 Lead Paint 38 gasoline additive MTBE 38 Shale 38 BOEMRE 38 groundwater contamination 38 Natural Gas 37 perchlorethylene