The engineering firm that designed the Mount Polley tailings pond containment system that collapsed on Aug. 4 also designed a tailings dam that failed catastrophically in South America on Aug. 19, 1995.
Knight Piésold designed the tailings containment facility for the Canadian-owned Omai gold mine in Guyana. Before the accident, it had handed off operational responsibility to the mining company, which then hired another engineering consultant,...
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