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The Giant Mine was a large gold mine located on the Ingraham Trail just outside of Yellowknife, Northwest Territories. Giant Mine is within the Kam Group, which is part of the Yellowknife greenstone belt. Gold was discovered on the property in 1935 by Johnny Baker, but the true extent of the gold deposits were not known until 1944 when a massive gold-bearing shear zone was uncovered beneath the drift-filled Baker Creek Valley. The discovery led to a massive post-war staking boom in Yellowknife. Giant Mine entered production in 1948 and ceased operations in 2004. It produced over of gold. 〔Silke, Ryan. 2009. "The Operational History of Mines in the Northwest Territories, Canada" Self Published, November 2009.〕〔Silke, Ryan. 2012. "High Grade Tales: Stories from mining camps of the Northwest Territories" Self Published, January 2012.〕 Owners of the mine have included Falconbridge (1948-1986 through subsidiary Giant Yellowknife Mines Limited), Pamour of Australia (1986-1990 through subsidiary Giant Yellowknife Mines Limited), Royal Oak Mines (1990–1999), and Miramar Mining Corporation (1999–2004). When Royal Oak went bankrupt in 1999 DIAND took over responsibility for cleaning up the Giant mine site.〔 According to an article published in ''The Star'' in 2006, there were 15 storage chambers a total of tonnes of deadly arsenic trioxide dust, the lethal byproduct of extracting gold from the mineral arsenopyrite ore,〔 In 2006 underground flooding around Giant Mine's Mill Pond's underground chamber which contained tonnes of arsenic trioxide dust threatened to dump large amounts of arsenic into Yellowknife Bay.〔 On September 18, 1992, at the height of a labour dispute during the tenure of Royal Oak Mines ownership, an explosion in a drift of the mine, underground, killed nine strikebreakers and replacement workers riding in a man-car. Mine employee Roger Warren was later convicted of placing the bomb. The strike/lockout ended in 1993, pursuant to an order by the (then) Canada Labour Relations Board. A civil suit also resulted on behalf of the families of the replacement workers killed in the explosion (''Fullowka v. Royal Oak Ventures Inc.'') In 2008 the nine Giant Mine widows lost their $10-million civil judgment when the Northwest Territories Supreme Court overturned an earlier ruling. The Northwest Territories' first mining museum is to be built on the old property. The N.W.T. Mining Heritage Society is in charge of the work. ==Contamination== Mining operations over five decades has created a massive environmental liability, a problem which the mine's previous owners left to the Government of Canada and Government of the Northwest Territories to sort out.〔 The site's footprint includes 8 open pits, 4 tailing ponds, of contaminated soils, and approximately 100 buildings including a roaster/bag house complex that is highly contaminated with arsenic and fibrous asbestos.〔 The remediation plan proposed by the SRK Consulting Inc. and SENES Consultants Limited, the leading technical advisors since 2000 to Aboriginal Affairs and Northern Development Canada on the Giant Mine Remediation Project, includes underground issues such as arsenic trioxide, and remediation of the surface, water and Baker Creek.〔 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「Giant Mine」の詳細全文を読む スポンサード リンク
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