A mine safety expert says many old mines in Western Pennsylvania have less than 50 feet of ground cover between the mine and the surface, making them vulnerable to collapse.

A mine safety expert says many old mines in Western Pennsylvania have less than 50 feet of ground cover between the mine and the surface, making them vulnerable to collapse.

Rustic Ridge #1 mine is owned by LCT Energy of Johnstown, Pa., which is working it to extract metallurgical coal, used in ...

Coal mining’s roots in the Pittsburgh area run deeper than the foundations of American democracy. Since the mid-1700s, years before the Declaration of Independence, Pennsylvanians have mined ...

A mine safety expert said many old mines in Western Pennsylvania have less than 50 feet of ground cover between the mine and the surface, making them vulnerable to collapse. More for You ...