Canada oil coke stirs trouble in US

Canadian petroleum sands produce piles of black powdery substance that blows into US homes.

    Canada's oil sands boom is producing an unwanted by-product, huge piles of petroleum coke.

    Tens of millions of tonnes of the black powdery substance are accumulating in both Canada and the US.

    Al Jazeera's Daniel Lak reports from the US city of Detroit, where large clouds of coke from nearby Canada blew into homes last month.

    SOURCE: Al Jazeera


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