Tar-sands Sentence Examples
tar-sands
Coal and lignitic coal are the principal economic minerals met with in this central plain, though natural gas occurs and is put to use near Medicine Hat, and " tar sands " along the northeastern edge of the Cretaceous indicate the presence of petroleum.
The reserves in the Alberta tar sands are quoted at 180 billion barrels, bigger than that of every OPEC country except Saudi Arabia.
There are several sources for oil including shale, tar sands and the liquid petroleum that is refined into several types of fuel.
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