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 more PR