Related by context. Frequent words. (Click for all words.) 52 coal mine 49 coal seam 48 coalmine 47 Elandsrand mine 47 Marcellus shale formation 47 Shanxi Coking Coal 47 Zasyadko mine 47 Ulyanovskaya mine 46 near Carletonville 46 coal mines 46 Meikle mine 46 colliery 46 Kingking 45 coalfield 45 coal mining 44 highwall 44 Elandsrand 44 Coal Mine 44 mine shaft 44 Wangjialing Coal Mine 44 Xinxing mine 44 Congressman Nick Rahall 43 Quecreek Mine 43 Chesapeake Appalachia 43 underground 43 Paradox Basin 43 Quecreek 43 mines 43 coalmines 43 coal seams 43 previously undrilled 43 Galena Mine 42 mountaintop removal mines 42 bauxite deposits 42 Gujiao 42 mine 42 La Colosa 42 Yuzhou 42 coal miners 42 Marcellus wells 41 alluvial mining 41 Kuzbass 41 Reightler 41 Kroondal 41 Driefontein 41 coke oven 41 mine shafts 41 Marcellus Shale wells 41 Mine 41 Cerrejon 41 Marikana 41 Neijiang 41 Westmoreland Coal 41 opencast mine 41 bituminous coal 40 McCully Field 40 Aranzazu Project 40 #.#mtpa 40 Colliery 40 Darby Mine 40 artisanal mining 40 Jixi 40 Wuhai 40 Carnarvon Basin 40 Xintai 40 Kisladag 40 stone quarry 40 CONSOL 40 CNX Gas Corporation 40 Bharat Coking Coal 40 Chattanooga Shale 40 mineshaft 40 mining 40 stopes 40 Qitaihe 40 Marcellus Shale formation 40 properly ventilating 40 mined 40 opencast 40 coalfields 40 Montana Tunnels 39 Tallmansville 39 limestone quarry 39 Marcellus Shale 39 Los Pelambres 39 bauxite mines 39 seismically defined 39 Coal Seam Gas 39 Paracatu 39 underground workings 39 Massey Aracoma Alma 39 Donlin Creek gold 39 collieries 39 vertical shaft 39 Hyden Ky. 39 Carletonville 39 Diavik mine 39 phosphate mines 39 Aracoma Coal Alma 39 Chuquicamata 39 Shelocta