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alloys amounts of silver anode base-metal mines blister copper Bluebell British Columbia Buchans bullion by-product Calumet mines Canada chalcopyrite Chibougamau Cobalt and Gowganda Cobalt area Cobalt Refinery coinage Company Limited Company of Canada company'e Comstock Lode concentratee consumption Copper Cliff copper concentrates copper-zinc Deloro deposits discovery feet Figure Flin Flon free stocks furnace Gold Mines Gowganda areas gravity concentrate Hector high-grade Hill Mines Limited industry Keno Hill Mines Kerr Lake Lake lead and zinc Lead bullion Manitoba Mayo district Metals of Ontario Mexico miles mill million ounces mineral Mining and Smelting Mining Corporation Murdochville Noranda Ontario operated orebodies ounces of silver Precambrian producer of silver properties Quebec recovery of silver Refining Company silver content Silver Islet silver mines silver production Silver recovered Siscoe Metals Slocan Slocan district smelter Smelting and Refining Source stope Table tellurium tons troy ounces United Keno Hill veins Yukon Territory zinc concentrates