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National Museum of Nuclear Science & History

Oral Histories

Samuel Beall Jr.’s Interview

Sam Beall is an American nuclear engineer. During the Manhattan Project, he worked for the DuPont Company at the Chicago Met Lab, Oak Ridge, TN, and Hanford, WA. After the war, he stayed at Oak Ridge and ultimately became head of the Reactor Division at Oak Ridge National Laboratory (ORNL). In this interview, Beall discusses his involvement with various nuclear reactors at Oak Ridge and recalls his friendship with former ORNL director Alvin Weinberg. He also describes his childhood in Richland, Georgia.

Milton Levenson’s Interview

Milton Levenson is an American chemical engineer and former president of the American Nuclear Society who has worked in the nuclear energy field for more than 60 years. During the Manhattan Project, he worked at Decatur, IL, and Oak Ridge, TN, where he was a supervisor at the X-10 plant. In this interview, he describes how he joined the Manhattan Project and his experiences at Oak Ridge, including his memories of segregation there. Levenson then talks about his post-war career as an expert on nuclear safety, including his role in responding to the SL-1, Three Mile Island, and Chernobyl accidents. He also recalls having to tell Enrico Fermi that he could not perform an experiment for safety reasons.

Harris Harold Levee’s Interview

Harris Harold Levee served in the Special Engineering Detachment at the Metallurgical Laboratory at the University of Chicago on the Manhattan Project. At the Met Lab, he worked with Enrico Fermi and Leo Szilard, who he describes as “not two peas in a pod, one was a pea and one was a string bean.” Levee’s assignments included following up on patents and ensuring strict secrecy was maintained at the laboratory. Levee later worked on construction of nuclear submarines.