How Mount Polley disaster's toxic impact continues to filter through B.C. waters, 10 years later

The catastrophic collapse of a tailings dam sent about 25 million cubic metres of poisoned water from the Mount Polley copper and gold mine surging into waterways on Aug. 4, 2014. The environmental impacts are still being felt, scientists fear, with toxic particles swirling in Quesnel Lake's water a decade later.