Coal from the Powder River Basin of Montana and Wyoming tends to be low in sulfur, for example, allowing power plants to burn more without exceeding local pollution limits.

来自蒙大拿粉河盆地和怀俄明州的煤炭含硫量低，可保证发电厂不超出本地排污限制。

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Other coal companies have drifted out West to the Powder River Basin, where the coal lies right at your feet.

FORBES: Not King Coal

It owns 200 miles of gas pipelines and operates coal-bed methane gas wells in the Powder River Basin of Wyoming.

FORBES: Magazine Article

The lawsuit was filed against the commission by the Powder River Basin Resource Council, Wyoming Outdoor Council, Earthworks and OMB Watch.

NPR: Judge Sides With Wyoming In Fracking Chemical Suit