Related by context. Frequent words. (Click for all words.) 43 coalmines 43 colliery 43 Grundy Va. 43 Comibol 42 coalmining 42 Kingking 42 coal mines 42 coal mine 42 Yuzhkuzbassugol 42 zinc smelting 42 Moundsville W.Va. 42 Minntac 41 mine 41 Shanxi Coking Coal 41 Morrison Knudsen 41 Huanuni 41 Chem Nuclear 41 Jixi 40 Colliery 40 Pasminco 40 Portsmouth Gaseous Diffusion Plant 40 Jerritt Canyon Mine 40 coalmine 40 coal mining 40 Cabin Creek 40 Homestake Mine 40 Elandsrand 39 coal miner 39 Erdenet 39 mines 39 Shenhua Group 39 Elandsrand mine 39 Xinxing 39 Cargill Salt 39 Palm Beach Aggregates 39 Cerrejon 39 Gujiao 39 miners 39 collieries 39 Coalmine 38 LTV Steel 38 miner 38 mining 38 PCS Phosphate 38 Reightler 38 DRD Gold 38 Samancor 38 Zijin 38 Pohatcong 38 Sayano Shushenskaya plant 38 Jinfeng 38 Freeport McMoran 38 coalminers 37 Bleachery 37 Horizon oilsands 37 pithead 37 brickworks 37 quarry 37 Wangjialing Coal Mine 37 coalminer 37 Bevin Boys 37 Shenhua Energy 37 Bharat Coking Coal 37 alluvial mining 37 Wuhai 37 Hamersley Iron 37 SECL 37 PT Bumi Resources 37 Barapukuria 37 Teck Cominco 37 JR Simplot Co. 37 Eklutna 37 Zapadnaya mine 36 collier 36 Arch Coal 36 OKD 36 Coking 36 Hunan Nonferrous Metals 36 China Guodian 36 hydro electric dam 36 Shougang Group 36 CHARLESTON W.Va. Massey 36 Hegang 36 zinc smelter 36 La Colosa 36 Centennial Coal 36 opencast mine 36 Westvaco 36 PBS Coals 36 Bumi Resources 36 copper smelting 36 Hobet 36 CBH Resources 36 Hibbing Taconite 36 Weirton Steel Corp. 35 Peter Kiewit Sons 35 Galena Mine 35 Massey Aracoma Alma 35 steel mill 35 smokejumper 35 Brookwood Ala.