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The Madawaska Mine is an abandoned underground uranium mine near the town of Bancroft, Ontario which produced 9,492,171 pounds of U3O8 during its two periods of production.〔http://www.canamuranium.com/sites/bce/files/CAUIProfileSept2007.pdf production numbers -- canamuranium.com〕 From 1954 to 1964 it operated as the Faraday Mine, and after it reopened as the Madawaska mine in 1975, production continued to 1982. The shaft into the uranium-bearing pegmatite reached a depth of .〔http://www.mindat.org/loc.php?loc=542&ob=4 data from Geological Survey of Canada Miscellaneous Report 39 -- mindat.org〕 The mine is currently decommissioned, and a mass of 4,000,000 tonnes of uranium tailings remains at the surface at the mine site.〔http://www.llrwmo.org/en/programs/ongoing/inventory.pdf Inventory of Radioactive Waste in Canada -- llrwmo.org〕 == See also == *Uranium ore deposits *List of uranium mines *Uranium mining *List of mines in Ontario 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Madawaska Mine」の詳細全文を読む スポンサード リンク
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