But, today, that mining has hollowed out the ground beneath us. Pennsylvania’s inventory of abandoned coal mines is larger than that of any other state in the nation, and the Keystone State has ...

Rather, researchers are finding that groundwater pouring out of this and other abandoned coal mines contains the rare earth elements and other valuable metals that are vital to making everything ...

A 2023 study suggests that the shafts of such abandoned mines could serve as energy-storing gravity batteries. Editor's note: Readers often ask us for follow-ups on memorable stories. What has ...

Water is currently flowing from an old, abandoned mine ... enough water has on mines. “That’s essentially where the water becomes more than what the mine fill or the coal outcrop barrier ...

THAT LADY PROBABLY WAS WALKING ALONG AND BOOM, A DEP SPOKESPERSON SAYS THE DEPARTMENT HAS TARGETED DOZENS OF DANGEROUS ABANDONED MINES FOR RECLAMATION ... underground coal mine maps currently ...