Three days after spilling crude oil into Lake Michigan, BP has doubled its spill estimate to between 470 and 1228 gallons. The leak happened at its refinery in Whiting, Ind. Although some of the oil has been cleaned up, it's unclear how much is left in the lake, a drinking water source for about seven million Chicagoans.
Whether CNRL's problems at Primrose are specific to that site or will become a more generic issue for the industry remains to be seen. But with 80 percent of the massive expansion planned for the oil sands coming from in situ production, it's a question that investors in oil sands stocks will soon want answered.