AIKEN, South Carolina, Oct. 10 -- The U.S. Department of Energy's Savannah River Site issued the following news release: Achieving yet another major milestone, employees at the HCanyon Chemical Separations Facility at the Savannah River Site (SRS) recently began the dissolution of nuclear material from a Japanese research reactor, leading to its safe disposal. The achievement follows years of preparation by multiple site contractors and involved replacement of an electrolytic dissolver and its support equipment to process Japan's Fast Critica more PR