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The Manhattan Project Heritage Preservation Association, Inc. "Preserving, Exhibiting, Interpreting and Teaching the History of the Manhattan Project" |
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Columbia University - SAM Lab
Photo: P-207 (John R. Dunning - Chief)
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This is a photo of John R. Dunning, (left) head of the SAM Lab at Columbia University where much of the early work on uranium separation was conducted. George B. Pegram (middle - professor at Columbia) and Eugene T. Booth (right - worked on gaseous diffusion) The following additional information was provided by John Dunning, Jr. - The three people in the photograph, my father, George Pegram and Eugene Booth, are grouped around the control panel of the first cyclotron at Columbia University, which my father constructed in the 1930’s. In the early days my father made neutrons by, for example, using a proton beam to bombard a Beryllium target. These neutrons were in turn used to probe the structure of nuclei including Uranium isotopes. When the cyclotron was retired in about 1965 parts of it were placed on display in the Smithsonian Institution in Washington. |
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