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.
Rachel Erlanger worked in a Kellex Corporation chemistry lab in New Jersey, where they researched gaseous diffusion barriers and other processes critical to the development of the K-25 plant. She got involved in the Manhattan Project when responding to an ad for Kellex. As a chemist, she recognized uranium-235 as the material used in an atomic bomb. In this interview, she describes how she got involved in the Manhattan Project, her excitement at contributing at that time, and how her attitude turned more negative after the war. She recalls her and her mother’s experiences during the prewar era and the pressure for women to marry and have children. She also briefly discusses her husband Bernard Erlanger, who also worked on the Manhattan Project.
Esther Vigil was living in the Española Valley with her family when Los Alamos was selected as a site for the Manhattan Project. She attended school at Los Alamos for several years. Both she and her mother worked at Los Alamos, babysitting for famous scientists like Edward Teller and Stanislaus Ulam. Vigil also worked for the Supply and Property Department. In this interview, she discusses not only her experiences at Los Alamos but also her later contributions to preserving local culture, a passion her mother also shared. She also explains how she helped preserve and reintroduce the tradition of colcha embroidery.
Russell E. Gackenbach was a navigator in the 393rd Bombardment Squadron. He flew on both the Hiroshima and Nagasaki missions. His crew flew aboard the Necessary Evil, which was the camera plane for the Hiroshima mission. Gackenbach photographed the mushroom cloud over Hiroshima. His crew flew again during the Nagasaki mission as the weather reconnaissance plane for the city of Kokura. In this interview, Gackenbach describes his wartime experiences, from enlisting in the service, to training in Wendover, UT and Cuba with the modified B-29s, to flying on both atomic bomb missions. He recalls the personalities of other members and leaders in the 509th, including Col. Paul Tibbets and his crew pilot, Capt. George Marquardt. He also describes his life after the war, including being honored at a Tampa Bay Buccaneers game as their “hero of the day” and participating in 509th reunions around the country.
Rachel Bronson has served as the Executive Director of the Bulletin of the Atomic Scientists since February 2015. In this interview, she discusses the role the Bulletin plays today in informing the public on threats posed by nuclear weapons, climate change, and emerging technologies. She articulates Manhattan Project veteran and Bulletin co-founder Eugene Rabinowitch’s concerns about the “Pandora’s box of modern science.” She also describes an exhibit opening in May 2017 that the Bulletin is putting together in partnership with the Museum of Science and Industry in Chicago.
Dr. Henry Frisch is a professor of physics at the University of Chicago. He is the son of David Frisch, who worked on the Manhattan Project at Los Alamos. In this interview, Frisch discusses the University of Chicago’s role in the Manhattan Project and how leading figures at UChicago advocated for civilian control of atomic energy. He also shares some of his father’s stories from Los Alamos, and reflects on the challenges of addressing nuclear weapons today.
Roger Hildebrand is an American physicist and the S.K. Allison Distinguished Service Professor, Emeritus, at the University of Chicago. His involvement with the Manhattan Project began with a tap on the shoulder by Ernest Lawrence, who convinced Hildebrand to shift from being a chemist to a physicist. He worked with cyclotrons and mass spectrometers at Berkeley before transferring to the Y-12 Plant in Oak Ridge. In this interview, Hildebrand shares his memories of Lawrence, Enrico Fermi, Samuel Allison, and other Manhattan Project scientists. He recalls his postwar work at the University of Chicago, and the pressure he felt after being asked to be a substitute in one of Fermi’s classes.
Ruth E. Coffin (1920-2017) of Portland, Maine was married to Judge Frank M. Coffin (1919-2009) who was a lawyer, Congressman, executive branch official, and judge on the First Circuit Court of Appeals for forty years. In this interview, she discusses her earliest childhood memories of the Bronx, falling in love with Frank Coffin, the “Big Man on Campus” at Bates College, and highlights of her life as Coffin’s wife and mother of their four children.
Peter Vandervoort is an American astrophysicist and professor emeritus at the University of Chicago. In this interview, Vandervoort shares stories about the university’s role in the Manhattan Project. He describes in depth how different buildings on its campus were appropriated for the project. He later discusses his interactions with the university’s distinguished physics faculty members after the war, such as Nobel Prize winner Subrahmanyan Chandrasekhar, who was Vandervoort’s Ph.D. advisor in the 1950s. Vandervoort also talks about the university’s community outreach efforts through the years. He concludes the interview by discussing the contributions of women to physics.
Kennette Benedict is the Senior Advisor to the Bulletin of the Atomic Scientists. She served as the Bulletin’s Executive Director and Publisher from 2005 until her retirement in February 2015. In this interview, Benedict discusses the history of the Bulletin. She recalls the scientists and staff involved with the Bulletin over the years, and describes the role the magazine has played in providing scientists with a platform to inform the debate on nuclear policy and other global security issues.