One year later, B.C. must heed Mount Polley disaster’s lessons – Sciene Matters

August 13, 2015

By David Suzuki with contributions from David Suzuki Foundation Communications Specialist Theresa Beer

It was a dramatic image: millions of cubic metres of waste cascading from the Mount Polley mine breach into the Quesnel watershed in B.C.’s Interior. Besides destroying a nine-kilometre creek and endangering salmon and the neighbouring community of Likely, the catastrophe damaged the mining industry’s reputation. In the months following, fingers pointed, independent panels weighed in and committees were struck. One year later, the Mount Polley mine is operating again, this time with a conditional permit and no long-term plan to deal with excess tailings.

In British Columbia, after metals are extracted from large mines, the finely ground rock that remains is stored under water behind earth-and-rock dams, which can prevent acid mine drainage. (Acid mine drainage occurs when water flows through exposed acidic minerals and becomes contaminated.) But storing massive quantities of water in large open pits near towns and waterways is risky.

Read More: http://www.davidsuzuki.org/blogs/science-matters/2015/08/one-year-later-bc-must-heed-mount-polley-disasters-lessons/