/tags/chromium-6 Chromium-6 en-US Copyright Thu, 27 Oct 2016 14:27:47 GMT /environment/2016-10-27/study-coal-ash-not-source-of-contamination-in-nc-wells Researchers at Duke University have found widespread contamination of North Carolina well-water with hexavalent chromium. Researchers initially believed… Thu, 27 Oct 2016 14:27:47 GMT /environment/2016-10-27/study-coal-ash-not-source-of-contamination-in-nc-wells Jess Clark