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Environmental liabilities in Canada's oilsands: Perspective for investors

Canada's oilsands contain the world's largest remaining deposit of oil that is still open to investment by western oil companies. As such, the oilsands are crucial to the long-term financial future of many of the world's leading oil companies. Yet the economics of oilsands extraction, even at today's relatively high prices, are fairly marginal, and a lack of disclosure by companies may be making the financial picture look better than it actually is.