Oral Histories

Inge-Juliana Sackmann Christy is a physicist and author. She was born in Germany in 1942 and immigrated to Canada in the 1950s. She later married physicist Robert Christy, who was an important member of the Manhattan Project. In this interview, Sackmann Christy describes details from her early life, how she met Robert Christy, the personalities of famous Caltech scientists such as Richard Feynman, and German physicists’ perspectives on the atomic bomb.

Raymond Sheline was a chemist at Columbia University and a member of the Special Engineer Detachment at Oak Ridge and Los Alamos. After graduating from college in 1942, Sheline received a telegram from Harold Urey inviting him to join the Manhattan Project at Columbia. His group at the university focused on resolving problems caused by corrosion during the gaseous diffusion process. After being drafted into the Army, Sheline was sent to Oak Ridge and Los Alamos as a member of the Special Engineer Detachment. At Los Alamos, he contributed to work on the trigger for the plutonium bomb. In this interview, Sheline discusses his early life and educational background. He describes memories from growing up in Ohio and from his time studying Chemistry at Bethany College. He also explains his time in the U.S. Army and how he came to work with the SED. Sheline then recalls how he met his wife Yvonne. Lastly, Sheline discusses his life after earning his Ph.D. at the University of California, Berkeley, including briefly working in Germany, working at the University of Chicago, how his career began at Florida State University, and his time researching in Copenhagen.

Phillip Broughton is a health physicist and Deputy Laser Safety Officer at the University of California, Berkeley. In this interview, he describes how he became a health physicist and the kind of work he does at Berkeley. He provides an overview of the buildings at Berkeley where Manhattan Project scientists worked during the war, and discusses some of the key scientists such as Glenn Seaborg. Broughton also recounts experiences from the year he spent working at Amundsen-Scott South Pole Station in Antarctica, where in addition to serving as the science cryogenics handler, he also became the Station’s bartender.

Raymond Sheline was a chemist who worked on the Manhattan Project at Columbia University, Oak Ridge, and Los Alamos. Sheline received his Ph.D. from the University of California at Berkeley in 1949 and was a professor at Florida State University for 48 years. Among other accomplishments, he helped establish a nuclear chemistry lab at the Niels Bohr Institute in Copenhagen and published more than 400 scientific papers. In this lecture, Sheline discusses how he initially joined the Manhattan Project, his work on gaseous diffusion at Columbia University under Nobel Prize winner Harold Urey and how he became a member of the Special Engineer Detachment. He also delves into the history of nuclear physics, providing an overview of key discoveries and personalities including J. Robert Oppenheimer, Enrico Fermi, and Edward Teller.

Bill Wilcox was an original resident of Oak Ridge, TN, and served as the Official Historian for the City of Oak Ridge, TN. A chemistry graduate from Washington & Lee University in 1943, he was hired by the Tennessee Eastman Company on a secret project in an unknown location he and his friends nicknamed “Dogpatch.” He worked with uranium, which was referred to only by its codename “Tuballoy.” Wilcox worked at Y-12 for five years and then at K-25 for 20 years, retiring as Technical Director for Union Carbide Nuclear Division. Wilcox actively promoted preservation of the “Secret City” history through the Oak Ridge Heritage & Preservation Association and by founding the Partnership for K-25 Preservation. He also published several books on Oak Ridge, including a history of Y-12 and “Opening the Gates of the Secret City.”

Robert Carter spent a year and a half as a graduate student at Purdue University before being recruited to work for the Manhattan Project. At Los Alamos, Carter’s team, which included his close friend Joan Hinton, worked on the research reactor. Eventually, Carter and Hinton came to work closely with Enrico Fermi, who became a mentor and friend to the two of them. Carter fondly recounts his dinners and hikes with Hinton and Fermi, both at Los Alamos and after. After the war, Carter enrolled in graduate courses at University of Illinois before returning to Los Alamos for fifteen years. For the rest of his career, Carter worked for various government agencies before retiring. Carter also discusses his friend Harry Daghlian and advising prominent physicist George Gamow on a project.

Dieter Gruen worked in the Chemical Research Division at the Y-12 Plant during the Manhattan Project. In this interview, he discusses his childhood in Walldorf, Germany, and how his family’s life changed as the Nazis came to power. Gruen discusses how he came to the U.S. in 1937, and his school experiences both in Little Rock, Arkansas, and at the University of Chicago. He explains how his work at Oak Ridge led him to devote his career to science and innovation. He also spends time sharing his feelings about his involvement with the Manhattan Project. Gruen discusses his views regarding climate change, and how nations can work together to resolve it.

William J. Nicholson grew up in Chicago, with a strong interest in aviation and aeronautics. During the Manhattan Project he worked as an assistant at the Met Lab. He then served in the Army Air Force. In this interview, Nicholson discusses his childhood and school years spent in Chicago. He then explains how he joined the Manhattan Project out of high school. He recalls the secrecy of the work, and describes working with and machining uranium and other metals. Nicholson remembers Edward Creutz, Enrico Fermi, Walter Zinn, and other scientists he worked with. He explains why he wanted to leave Manhattan Project work to join the Air Force, and describes flying bombers over Europe and being shot down by the Germans. He ends by discussing his life and career after the war.

Harris Mayer is an American physicist. A student of both Edward Teller and Maria Goeppert-Mayer, he worked at Columbia University during the Manhattan Project. He moved to Los Alamos in 1947 to work at the Los Alamos laboratory, and his early work contributed to the development of the hydrogen bomb. In this interview, Mayer discusses his close friendships with other scientists and his work on the Operation Greenhouse nuclear tests. He shares stories about Teller, Frederick Reines, and Richard Feynman, and recalls attempting to mediate the conflict between Teller and Hans Bethe.

Robert S. Norris is a senior fellow at the Federation of American Scientists and author of the definitive biography of General Leslie R. Groves, “Racing for the Bomb: General Leslie R. Groves, the Manhattan Project’s Indispensable Man.” In this interview, Norris provides an overview of how the Manhattan Project began, how the project sites were selected, and the role of British scientists in the project. He discusses the fear that many Manhattan Project scientists felt that Germany would develop an atomic bomb first. He explains Groves’ background, why he was the perfect leader for the project, and how he involved industry, especially DuPont, to help with the project. Norris contends that the Manhattan Project was a unique program in American history and would be difficult to replicate today.