From Europe to North America, an energy revolution is breathing new life into empty, long-forgotten coal mine shafts—by repurposing them into places to store renewable energy. Using "gravity batteries ...
Ukraine blew up the No. 3 mine's shaft in the village of Pishchane in Donetsk Oblast to prevent Russia from deploying its troops closer to the front-line town of Pokrovsk, The New York Times (NYT) ...
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