Legal action tied to U.S. Steel's spill of nearly 300 pounds of carcinogenic hexavalent chromium near popular surf spot in Lake Michigan (surfrider.org)
However, there are limited human studies on the health effects of hexavalent chromium when ingested,» Dr. Rhea Mehta, a molecular toxicologist, explained to mindbodygreen. (mindbodygreen.com)
Only after atmospheric oxygen was formed did uranium become oxidised to its mobile hexavalent uranium (VI). (sciencedaily.com)