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#11
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I don't have the answer, but I can speculate. Canadian oil has heavy sands. It is more time consuming to refine, it pollutes the environment (air and freshwater) 3X more than conventional crude, and it's more harsh on the process equipment because of the abrasiveness. All around, it's more costly to refine. Again, I don't know if that's the reason or not, but I imagine that has a lot to do with it.
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