That Michigan Oil Spill Was Canadian Tar Sand Oil After All

Another reminder that Canadian tar sand crude, when stripped or steamed free from the earth north of the border, can also raise havoc in US when piped here.

Wisconsin has already had its share of documented environmental problems with the Canadian pipelines, and the seven-fold expansion projected in recent years for the Murphy Oil refinery in Superior is part of a large US-Canadian effort to accept more and more tar sand crude.

Murphy has put that refinery on the market; its future ownership and operations are unclear.