The U.S. Department of Energy released Draft Surplus Plutonium Disposition Supplemental Environmental Impact Statement (PDF file). In this document "DOE considers four action alternatives for the disposition of 13.1 metric tons of surplus plutonium and four options for pit disassembly and conversion of 34.6 metric tons. These alternatives involve DOE facilities at LANL, SRS, and WIPP. DOE also analyzes the potential environmental impacts of using MOX fuel in TVA's Browns Ferry and Sequoyah Nuclear Plants, as well as in one or more generic reactors" (p. S-16).