Nuclear Energy and Nuclear Disasters. In the context of nuclear technology, heavy metal means all uranium, plutonium, or thorium placed into a nuclear reactor. See: metric tons of heavy metal.
National Environmental Policy Act (NEPA), Glossary of Terms Used in DOE NEPA Documents, US Department of Energy, Office of NEPA Policy and Compliance, USA 1998. http://energy.gov/sites/prod/files/NEPA_Glossary%2 008_2011.pdf, (EHS - Amer) {515}