CBC.ca | Alberta pipelines: 6 major oil spills in recent history - Canada - CBC News CBC.ca Five million litres of a bitumen-water-sand emulsion were found to have leaked Wednesday from a Nexen Energy pipeline south of Fort McMurray, Alta. — one of the biggest oil spills in the province's history. It adds further fuel to the debate over ... Massive Alberta oil spill bigger than Kalamazoo disaster | National Observer Alberta oil spill: When 'failsafe' leak detection systems fail | Globalnews.ca Canada's Nexen Apologizes for Oil Pipeline Spill in Alberta - WSJ |