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Chief mine inspector says Mt. Polley tailings pond poorly designed

Chief mine inspector says Mt. Polley tailings pond poorly designed

BC’s chief inspector of mines says standards were weak for a tailings pond that collapsed last year, but not weak enough to warrant charges under the Mines Act.

Al Hoffman says the Mount Polley mine and its engineers had weak standards for the tailings-storage facility that collapsed in August 2014.

Hoffman says the strength of a clay layer underneath the dam wasn’t taken into account when the dam was built and water management at the Cariboo site was inadequate.

He makes 19 recommendations in a report released into the disaster, including that all mines with similar storage facilities be required to have designated mine safety managers.

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