The company will mine metallurgical coal, but an environmental group worries the project will exacerbate mine drainage problems in the Laurel Highlands.

HARRISBURG, PA — The Pennsylvania Department of Environmental Protection ... (SXO-D17): Efforts will include reviewing historic mine maps to locate mine openings and associated entries ...

That Pennsylvania coal ... of the commonwealth,” DEP’s Camarda added. “While DEP has made strides inventorying these abandoned mine land features, digitizing maps and completing projects ...