Green Run

The "Green Run" was a secret U.S. Government release of radioactive fission products on December 2–3, 1949 at the Hanford Site plutonium production facility, located in Eastern Washington. Radioisotopes released at that time were supposed to be detected by U.S. Air Force reconnaissance. Freedom of Information Act (FOIA) requests to the U.S. Government have revealed some of the details of the experiment.[1] Sources cite 5,500 to 12,000 curies (200 to 440 TBq) of iodine-131 released,[1][2][3] and an even greater amount of xenon-133. The radiation was distributed over populated areas and caused the cessation of intentional radioactive releases at Hanford until 1962, when more experiments commenced.[3]

For other uses, see Green Run (disambiguation).

There are some indications contained in the documents released by the FOIA requests that many other tests were conducted in the 1940s prior to the Green Run, although the Green Run was a particularly large test. Evidence suggests that filters to remove the iodine were disabled during the Green Run.[3][4]

Oral history

Health Physicist Carl C. Gamertsfelder, Ph.D. described his recollections as to the reasons for the Green Run by attributing it to the intentions of the Air Force to be able to track Soviet releases.[5]

Herb Parker called me to request that I, and the groups that I supervised, cooperate with the Air Force in the conduct of an experiment which became known as the Green Run ... And we didn't recommend, we wouldn't have recommended, that they operate it. We told them that. They wanted to run anyway, and they did run.

See also

References
  1. The Release of Radioactive Materials from Hanford: 1944–1972.
  2. Miller, Richard L. (1991). Under the Cloud: The Decades of Nuclear Testing. The Woodlands, Texas: Two Sixty Press. pp. 71. ISBN 0-02-921620-6. (See Google Books)
  3. Goliszek, Andrew (2003). In The Name of Science. New York: St. Martin's Press. pp. 130–131. ISBN 978-0-312-30356-3.
  4. "New documents reveal story behind green run". WISE News Communique. October 30, 1992.
  5. Oral History of Health Physicist Carl C. Gamertsfelder, Ph.D., DOE/EH-0467, HUMAN RADIATION STUDIES: REMEMBERING THE EARLY YEARS. Conducted January 19, 1995, United States Department of Energy, Office of Human Radiation Experiments, September 1995.
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