Updated tailings code after Mount Polley an improvement: B.C. mines auditor
VICTORIA — A new report says changes to British Columbia’s requirements for tailings storage after the Mount Polley disaster have generally improved the management of mining waste.
The mines chief auditor found many of the revisions made in 2016 to how tailings are managed align the province’s regulatory framework with the industry’s best practices, “with a few exceptions.”
It says changes to the province’s code on tailings storage facilities stemmed from recommendations by an independent engineering investigation into the 2014 failure of the tailings dam at the Mount Polley copper and gold mine in B.C., which sent more than 20 million cubic metres of mining wastewater into the surrounding waterways.
The audit focused on the clarity, enforceability and consistency of the code revisions with best practices, as well as on industry compliance and government enforcement, finding they have helped but there is room for improvement.