"One of the largest leaks in Alberta history has spilled about five million litres of emulsion from a Nexen Energy pipeline at the company's Long Lake oilsands facility south of Fort McMurray.
The leak was discovered Wednesday afternoon.
Nexen said in a statement its emergency response plan has been activated and personnel were onsite. The leak has been stabilized, the company said."
CBC News had the story July 16, 2015.
Source: CBS News, 07/17/2015