 CENTREVILLE, Va., July 12, 2021 GLOBE NEWSWIRE -- The Department of Energys DOE Salt Waste Processing Facility SWPF a first-of-a-kind, one-of-a-kind facility that was designed, built, and is being operated by Parsons Corporation NYSE: PSN has successfully processed more than 1 million gallons of radioactive nuclear waste. SWPF began processing the legacy radioactive material in October 2020. 