Related by context. Frequent words. (Click for all words.) 81 coal mining 77 coal mine 73 mines 72 coalmine 67 coal miners 66 coal 64 coal miner 63 mine 62 colliery 61 coalfields 60 mining 60 miners 59 Coal Mine 58 steel mills 56 Coal 56 iron ore mines 55 uranium mines 54 miner 54 steel mill 54 mine shafts 53 Sago Mine 53 coal seams 52 steelworks 51 smelters 51 MSHA 51 blast furnaces 51 coal fired 51 Mine Safety 50 quarries 50 thermal coal 50 coking coal 49 steelmaking 48 metallurgical coal 48 coking 48 smelting 47 Shanxi province 47 Colliery 47 Mine 47 kilns 46 furnaces 46 blast furnace 46 coal seam 46 bauxite 46 Patriot Coal 46 steelmakers 46 Mining 46 smelter 46 Massey Energy 46 iron ore 45 lignite 45 factories 45 Mine Workers 44 mountaintop removal 44 ArcelorMittal 44 refineries 44 coalbed methane 44 mine shaft 44 dams 44 trapped miners 44 Sago 44 coal gasification 43 iron ore miner 43 alumina refinery 43 textile mills 42 polluting industries 42 coal ash 42 Appalachia 42 miners trapped 42 nuclear reactors 42 hog farms 42 uranium mining 42 Pilbara region 42 mountaintop removal mining 42 Peabody Energy 42 shipyards 42 refinery 42 dairies 42 railways 41 alumina 41 steelmaker 41 Crandall Canyon 41 dairy farms 41 Macarthur Coal 41 Shanxi 41 plants 40 Consol Energy 40 ferrochrome 40 metallurgical 40 Sinosteel 40 sawmills 40 breweries 40 hydroelectric 40 mined 40 Crandall Canyon mine 40 distilleries 40 Tangshan 40 mills 40 Pilbara 40 poultry farms 40 SOEs 40 shale gas