Toronto Star: Oil spills at a major oil sands operation in Alberta have been ongoing for at least six weeks and have cast doubts on the safety of underground extraction methods, according to documents obtained by the Star and a government scientist who has been on site.
Canadian Natural Resources Ltd. has been unable to stop an underground oil blowout that has killed numerous animals and contaminated a lake, forest, and muskeg at its operations in Cold Lake, Alta.
The documents indicate that, since cleanup...