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East Pit of Sherman Mine in Temagami, Ontario, Canada. Adams Mine – abandoned mine in Kirkland Lake, Ontario; Athabasca oil sands – second largest proven petroleum reserve in the world as of 2013, located in northern Alberta along the Athabasca river. Barkerville Mine - Gold Mine near Wells, British Columbia
Thompson Creek Mine (near Challis, Idaho) — The Thompson Creek Mine is a primary molybdenum mine located approximately 35 miles southwest of Challis in Idaho's Custer County, a historic mining area. Known as the Thompson Creek deposit, it was discovered in 1968 by Cyprus Minerals Corporation.
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, [1] is a surface mining technique that extracts rock or minerals from the earth. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin. In contrast, deeper mineral ...
Mining of the original Bethlehem Copper pits ceased in 1982. The Bethlehem concentrator continued to operate on ore from the Valley Copper deposit until June 1989. Production on the Valley Copper mine, now the largest mine and most noticeable feature, began in January 1983. [5] For fifty years the ore was dug using shovels and open pit methods ...
The following lists of mines in Canada are subsidiaries to the list of mines article and lists working, defunct and future mines in the country and is organised by the primary mineral output and province.
During the 1980s, the company, Summitville Consolidated Mining Company, started open-pit mining of gold ore. Open-pit mining uses cyanide, which is poured over the broken-down ore and dissolves the gold. After this process, gold is extracted from the bottom and processed. [10] Environmental problems followed after the beginning of open-pit ...
Sherman Mine is a closed open pit mine in Temagami, Ontario, Canada.It was a major producer of iron ore, starting production in 1968 and closing in 1990.Sherman was the largest open pit mine in Temagami, consisting of seven open pits known as the East Pit, South Pit, North Pit, West Pit and the Turtle Pits.
The Québec Cartier Mining Company opened the Lake Jeannine iron mine to the southwest of Fire Lake in 1961, near the company-built town of Gagnon. The company made investments in the 1970s at Mont-Wright, Fermont and Fire Lake. [4] The open pit mine near Fire Lake was exploited by Sidbec-Normines, a private-public consortium, between 1977 and ...