The Giant mine, located just 5 km from the city centre of Yellowknife in the Northwest Territories, produced more than 7 million oz. of gold over its entire history, starting in the 1940s. Through the ore roasting process, the mine also produced an enormous amount of highly toxic arsenic trioxide dust. When the owner of the mine went bankrupt in 1999, the cleanup of the site fell to the federal government.
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