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Cumulative Impact of Mountaintop Mining Documented

Increased salinity and concentrations of trace elements in one West Virginia watershed have been tied directly to multiple surface coal mines upstream by a detailed new survey of stream chemistry. The Duke University team that conducted the study said it provides new evidence of the cumulative effects multiple mountaintop mining permits can have in a river network.

Our analysis of water samples from 23 sites along West Virginia’s Upper Mud River and its tributaries shows that salinity and trace element concentrations, including selenium, increased at a rate directly proportional to the cumulative amount of surface mining in the watershed,” said Duke researcher Ty Lindberg. “We found a strong linear correlation.”

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