This mountain of coal next to Duke Energy’s Marshall Steam Station on Lake Norman, as seen from the coal ash basin, could yield rare metals after its burning.
This mountain of coal next to Duke Energy’s Marshall Steam Station on Lake Norman, as seen from the coal ash basin, could yield rare metals after its burning. Davie Hinshaw dhinshaw@charlotteobserver.com
This mountain of coal next to Duke Energy’s Marshall Steam Station on Lake Norman, as seen from the coal ash basin, could yield rare metals after its burning. Davie Hinshaw dhinshaw@charlotteobserver.com

Duke researchers: NC coal ash could be a resource, not just a hazard

June 24, 2016 3:42 PM