Coal runs deep in Pennsylvania, below old barns, graves, and wind turbines. Family trees remain rooted in the sooty black seams their ancestors mined. East of the Susquehanna River, in northeastern Pennsylvania, miners dug for anthracite coal, the harder, rarer product, almost luminous black in the light. Today, the heyday of the anthracite industry is mostly a memory. The “Black Diamonds” play youth football on fall weekends in Ashland. Statues of miners stand in town squares, and murals recall when anthracite was mined and “coal was king.”