ARGONNE NATIONAL LABORATORY / SCIENCE PHOTO LIBRARY ARGONNE NATIONAL LABORATORY / SCIENCE PHOTO LIBRARY
Herbert Anderson, US physicist and member of the team which built the first atomic pile (or nuclear reactor). In 1939, Anderson became a research associate of the team leader, Enrico Fermi, at Columbia University. He collaborated in Fermi's work on uranium fission, which led to the planning and building of the atomic pile in Chicago. The first self-sustaining nuclear chain reaction occurred in this atomic pile at 3.36 pm on 2 December 1942. Anderson went on to participate in other aspects of the Manhattan Project, the US programme to build the atomic bomb. This photo was taken in Chicago in 1942.
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