CBC.ca | Canada's Nexen Directed to Contain Oil Pipeline Spill in Alberta - WSJ Wall Street Journal CALGARY, Alberta—Alberta's energy regulator Friday directed the Canadian unit of a Chinese state-owned company to contain a large oil-sands pipeline spill in northern Alberta, the cause of which remains under investigation. The Alberta Energy ... Alberta pipelines: 6 major oil spills in recent history - Canada - CBC News Alberta oil spill: When 'failsafe' leak detection systems fail | Globalnews.ca Massive Alberta oil spill bigger than Kalamazoo disaster | National Observer |