Related by context. Frequent words. (Click for all words.) 45 coal mine 42 coal mines 42 Consol Energy 41 Massey Energy 40 mines 40 MSHA 40 coal seam 40 colliery 39 Mine Safety 39 coalmines 39 NYSE CNX 39 mine shaft 39 longwall mining 39 Crandall Canyon mine 39 Arch Coal 38 Patriot Coal 38 mine 38 Surface Mining 38 Raspadskaya mine 38 CONSOL 38 Coal Mine Safety 38 limestone quarry 38 coal mining 38 quarry 38 spokeswoman Amy Louviere 38 coalmine 38 Sago Baptist Church 37 coal miner 37 Coal 37 Aracoma 37 mine shafts 37 miners 37 PBS Coals 37 Quecreek 37 cavern 37 coal seams 37 Zijin Mining 36 Colliery 36 mine subsidence 36 tailings pond 36 Coal Mine 36 coal miners 36 stone quarry 36 smokestack 36 Marcellus Shale drilling 36 drainage pipe 36 Newmont Mining Corp 36 Jeff Gillenwater 36 Zijin Mining Group 36 Sago Mine 36 Powder River Basin 36 coal 36 CNX Gas 35 driller 35 stormwater drain 35 longwall 35 Kemerovo region 35 COGCC 35 coalfield 35 Cleveland Cliffs 35 Cabin Creek 35 collieries 35 CONSOL Energy 35 mineshaft 35 Hegang 34 China Shenhua Energy 34 creek 34 noxious gases 34 manhole 34 silo 34 SunCoke 34 valley fills 34 coalfields 34 creek bed 34 coal gasification plant 34 Crandall Canyon Mine 34 Shenhua Group 34 coke ovens 34 mining 34 underground 33 Yanzhou Coal Mining 33 DEQ 33 Sago mine 33 Chief Executive Don Blankenship 33 W.Va. mine 33 Peabody Energy 33 Xstrata XTA.L 33 steep hillside 33 trash incinerator 33 steep embankment 33 drillers 33 roadbed 33 Pasminco 33 UMWA 33 Laiwu Steel 33 Alpha Natural Resources 32 crawlspace 32 coalmining 32 Bethlehem Steel 32 coalbed methane 32 streambed