The defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) in Aiken, SC began immobilizing high-level radioactive waste in borosilicate glass in 1996. Currently, the radioactive glass is being produced as a "sludge-only" composition by combining washed high level waste sludge with glass frit. The glass is poured into stainless steel canisters which will eventually be disposed of in a permanent, gological repository.
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