An abandoned gravel machine sits in disuse on the riverbank, with a pile of leftover stones, as the river in the background ...

Beneath parts of the Appalachian Mountains, thousands of mine shafts still descend deep into the earth. Some of these ...

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 250,000 ...