Mountaintop Mining (IMAGE) University of Wyoming Caption A portion of the Hobet 21 coal mine in West Virginia shows the effects of mountaintop-removal mining, which, new research shows, causes many streams and rivers in Appalachia to run consistently saltier for up to 80 percent of the year. Credit Fabian Nippgen Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.