For the past 250 years, people have mined coal industrially in Pennsylvania, U.S.. By 1830, the city of Pittsburgh was using more than 400 tons of the fossil fuel every day. Burning all that coal has ...
UNITY TOWNSHIP, Pa. — Crews will return to the abandoned coal mine in Unity Township Friday and start to drill holes in the ground — about 40 feet deep — to send cameras and drones down into the mine ...
Decades after underground coal mining all but ended in Eastern Pennsylvania, residents of certain areas continue today to face a hidden danger: mine subsidence. Gaping holes sometimes open without ...
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