Related by context. Frequent words. (Click for all words.) 70 coalfields 69 coal mining 62 colliery 60 coal mines 60 coal mine 57 coal miners 56 coalmine 56 coal 52 Colliery 50 mine 49 steelworks 49 Coal Mining 49 mining 49 Coal 49 coal seams 48 coal miner 47 mountaintop removal 47 miners 46 mines 46 Appalachia 46 mountaintop removal mining 45 coalbed methane 44 Coal Mine 43 coal seam 42 UMWA 42 coal fired 42 COAL 42 mountaintop mining 41 Pilbara 41 mine shafts 41 mineworkers 41 Shanxi province 40 miner 40 Mining 40 anthracite 40 Bowen Basin 40 coal seam gas 40 steel mills 39 Mine Workers 39 iron ore mines 39 bauxite 39 Pilbara region 39 Pilbara iron ore 39 thermal coal 38 uplands 38 shale gas 38 quarrying 38 polluting industries 38 MSHA 38 coal ash 38 WV 38 quarry 38 Zijin 38 Powder River Basin 38 Marcellus Shale 38 steelmaking 38 quarries 38 coking coal 37 longwall 37 uranium mining 37 Massey Energy 37 iron ore 37 Shanxi Province 37 Sago Mine 37 Mine Safety 37 mine shaft 37 CBM 37 Marcellus shale 36 uranium mines 36 bed methane 36 metallurgical coal 36 Mine 36 steelworkers 36 Governor Joe Manchin 36 methane 36 Surface Mining 36 MINING 36 Marcellus Shale formation 36 manganese 36 Kennecott 36 subsidence 36 coal gasification 36 silicosis 36 mineral extraction 35 methane gas 35 hydropower 35 West Virginia 35 CNX Gas 35 Appalachian 35 brownfield 35 Mineworkers 35 steel mill 35 Manchin 35 bauxite mine 35 lignite 35 coal gasification plant 35 rust belt 35 Gov. Joe Manchin 35 mined 34 shale 34 brick kilns