Related by context. Frequent words. (Click for all words.) 75 tailings ponds 62 tailings 59 Syncrude 55 Syncrude Canada 54 tailings dam 53 Tailings 52 mine tailings 49 ERCB 48 Athabasca River 48 weir 48 Fort McMurray Alta 47 oilsands 46 gravel pit 46 oil sands 46 dewatering 45 leach pad 45 Taseko 45 Fort McMurray 44 bitumen 44 Teck Cominco 44 quarry 44 Cigar Lake 44 impoundment 44 stope 43 cofferdam 43 mine 43 heap leach 43 Kennecott 43 Lake Simcoe 43 ponds 43 upgrader 43 leaching 42 Oilsands 42 Cambior 42 Athabasca 42 SAGD 42 reservoir 42 Fort McMurray Alberta 42 effluent 42 watercourse 41 Suncor 41 ore 41 coal slurry 41 brine 40 sulfide 40 Alberta tar sands 40 Minto Mine 40 HudBay Minerals 40 delineation drilling 40 scoping study 40 leachate 40 Clean Water Act 40 contaminated soils 40 limestone quarry 40 uranium mines 40 mill throughput 40 gravels 40 heap leaching 40 coal mine 40 rip rap 40 Voisey Bay 40 silt 40 Penasquito 40 gravel pits 40 situ 40 Definitive Feasibility Study 39 dam 39 mining 39 tarsands 39 Belledune 39 Ok Tedi 39 Placer Dome 39 Cameco 39 Zijin 39 tar sands 39 Mine 39 retention ponds 39 Attawapiskat 39 sediment 39 Diavik 39 Noranda 39 lake 39 Alexco 39 mines 39 Newalta 39 prefeasibility study 38 Teck Resources 38 slurry 38 underground workings 38 watercourses 38 Northwest Territories 38 Scoping Study 38 frac 38 bulk sampling 38 mine shaft 38 kimberlite 38 Northern Dynasty 38 Pinos Altos 38 tpd 38 Las Cristinas 38 sulphide