Green Run

The Green Run was a classified, intentional release of radioactive fission products conducted on December 2 and 3, 1949, at the Hanford Site plutonium production complex in Eastern Washington. The experiment was conducted by the United States Atomic Energy Commission and the United States Air Force, with General Electric as Hanford's operating contractor. For the test, irradiated uranium fuel from Hanford's F Reactor was processed after a 16-day decay period rather than the longer cooling period normally used, and off-gas scrubbers were not operated during the release from the T Plant chemical separation facility.

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