It says it must present a research plan for its water-capping technology by September 2023.

The Alberta Energy Regulator has approved a tailings pond management plan for oilsands miner Syncrude Canada despite its reliance on a remediation method that isn't endorsed by the agency.

Alberta's oilsands could be heading for another showdown over tailings ponds after an independent assessment found that the cleanup plans of six major operators don't meet new rules.

Mines Minister Bill Bennett says British Columbia is making changes to its mining code that sets standards to ensure that a disaster like the Mount Polley tailings pond collapse never happens again.

Half-a-century after the Gunnar uranium mine closed down, the toxic legacy still remains. The problem is, the cost to clean it has gone up dramatically.

Results from water quality tests of Quesnel Lake won't analyze the potentially toxic solids released after Mount Polley mine's tailings pond was breached.

Why the huge difference in responses to the Mount Polley tailings breach in B.C. and the Canadian Natural Resources, Ltd. bitumen spills in northern Alberta?

He's one of Canada's most prominent billionaires - co-owner of the Calgary Flames, creator of oilsands giant CNRL - and main shareholder of Imperial Metals, whose mine spewed millions of cubic metres of tailings into the environment this week.

The bad news: A five-million-cubic-metre spill of mine tailings is a lot. The good news: It's rare. The impact: Almost totally unknown, at this point.