Financial Post | Oil prices are at a two-year high, but out-of-luck Canadian producers are missing out on all the upswing Financial Post But the discount on Canadian oil has only worsened after TransCanada Corp. shutdown its Keystone mainline after an oil spill late last week, choking off a vital conduit connecting Alberta to American refineries. The pipeline, built 10 years ago ... TransCanada: Over 24K Gallons of Oil Recovered from Spill South Dakota Warns Keystone Pipeline Permit Could Be Revoked After Oil Spill |