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Abandoned coal mine drainage identified as a significant source of carbon emissions

Summary by Phys.org
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 contributed to climate change. Additionally, unremediated mines—especially those that operated before Congress passed regulations in 1977—have leaked environmentally harmful mine drainage. But that might not be the end of their legacy.

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Over the past 250 years, people have been extracting coal industrially in Pennsylvania, the United States. In 1830, the city of Pittsburgh used more than 400 tons of fossil fuel every day. Burning all this coal has contributed to climate change. In addition, unsanitized mines – especially those that [...]

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Phys.org broke the news in United Kingdom on Saturday, November 1, 2025.
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