Related by context. Frequent words. (Click for all words.) 52 zinc smelting 52 LTV Steel 49 Atlantic Richfield 49 Rio Algom 48 Montana Tunnels 48 Jerritt Canyon Mine 47 Cominco 47 Kaiser Aluminum 47 Kaiser Aluminum Corp. 46 Homestake Mining Company 46 slag pile 46 smelting 46 Halaco 45 Morrison Knudsen 45 La Coipa 45 Farmland Industries 45 Smelting 45 Occidental Chemical 45 Westmoreland Coal 45 Quadra Mining 45 Hibbing Taconite 45 Kennecott Exploration 45 Magnum Coal 44 goldmining 44 Noranda 44 Piedras Verdes 44 Donlin Creek gold 44 Morococha 44 smelter 44 Tintaya 44 Claymont Steel 43 uranium vanadium 43 Antero Resources 43 Denison Mines 43 Texaco Petroleum 43 Asarco 43 Powertech Uranium Corp. 43 Glamis Gold 43 mining 42 copper smelter 42 uranium tailings 42 tailings 42 copper smelting 42 Unimin 42 Northshore Mining 42 Astaris 42 Kennecott Utah 42 JR Simplot Co. 42 Phelps Dodge 42 Freeport McMoran 41 Mount Emmons 41 El Abra 41 Refractories 41 USX 41 Mining 41 Kerr Addison 41 Nugget Pond 41 NovaGold Resources 41 Los Pelambres 41 Cline Mining 41 phosphate mines 41 Quadra Mining Ltd. 41 Tosco 41 Revett Minerals Inc. 41 Westvaco 41 Hugo Neu 41 Erdenet 41 Teck Cominco 40 Galena Mine 40 Uravan 40 Allegheny Ludlum 40 ferromanganese 40 Tesoro Petroleum 40 Amcast 40 Revett Minerals 40 Kennecott 40 Apex Silver 40 Coeur Alaska 40 Stillwater Mining Co. 40 minesite 40 Boddington mine 40 Murrin Murrin 40 Huanuni 40 evaporation ponds 40 Horsehead Holding Corp. 40 Borden Chemical 40 CalEnergy 39 Peru Copper 39 Elf Aquitaine 39 Palabora 39 Montanore 39 EVTAC 39 Grupo Mexico GMEXICOB.MX 39 Alamo Dorado 39 Minntac 39 mine tailings 39 settling ponds 39 EuroZinc 39 Antamina 39 Diavik Diamond Mines 39 Milltown Dam