Oral Histories

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.

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.

Charles Yulish has devoted his career to nuclear and environmental science. From an early age, Yulish fell in love with nuclear energy and set up a lab that received radioisotopes from the Atomic Energy Commission—who did not initially realize their samples were being sent to a high school student and his classroom lab. In this interview, Yulish remembers his teacher, who instilled in him a curiosity towards all things nuclear. He talks about his career in nuclear research—both public and private—throughout his 50 year career. He worked for many years for the United States Enrichment Corporation and its “Megatons to Megawatts” program. He also consulted with the Mescalero Apache Tribe in New Mexico, who wanted to set up a nuclear storage waste site on its land in the 1990s when the US government was considering such a program.

John Manley was a nuclear physicist who worked for the Manhattan Project from its early days. In this interview with Martin Sherwin, Manley recalls being impressed by George Kennan and Omar Bradley’s testimony before the Atomic Energy Commission. He also discusses the contributions to the project and personalities of General Kenneth Nichols, General Leslie Groves, and Peer de Silva. He also explains the founding of Los Alamos and and reflects on Oppenheimer’s transition into the “great administrator.”

John Manley was a nuclear physicist who worked for the Manhattan Project from its early days. After the war, Manley served as the Executive Secretary of the General Advisory Committee (GAC) of the Atomic Energy Commission (AEC), and later also became Associate Director of the Los Alamos National Laboratory. In this interview, Manley discusses how he came into these positions and reflects upon the relationship of the GAC and the AEC. He recalls Oppenheimer’s relationship with others on the GAC, including James B. Conant, and Oppenheimer’s leadership on the GAC.

Dorothy Ritter is the daughter of Manhattan Project veteran Francis Oley. Oley worked at the K-25 gaseous diffusion plant in Oak Ridge, TN. His job required him and his family to move from New York to Oak Ridge. Ritter spent several years of her childhood in Oak Ridge. In this interview she reminisces about the simplicity of her life there, and discusses how living and working at Oak Ridge impacted her family. She recalls the strain her father was under during the project, and the house they lived in. She also explains how the excellent teachers she had at Oak Ridge influenced her to become a teacher.

J.C. Hobbs was an American inventor and engineer who created a key part of the valves used in the K-25 gaseous diffusion plant in Oak Ridge, Tennessee. Hobbs was brought on to the Manhattan Project by the head of the Kellex Corporation, Percival Keith, to improve the piping system in the K-25 plant. In part three of his interview with Stephane Groueff, Hobbs discusses the key role he played in troubleshooting problems for K-25 and for other power plants across the country. He emphasizes the importance of the efficiencies he introduced at K-25, and describes some of the technical challenges he and his colleagues faced.

General Kenneth Nichols was the District Engineer for the Manhattan Engineering District, and oversaw the design and operation of the Hanford and Oak Ridge sites. He was responsible for securing the initial deals with Stone & Webster and the DuPont Company to develop the industry for the site, and lived for a time with his wife at Oak Ridge. He discusses sabotage and Klaus Fuchs, dealings with the British, and the very start of the Manhattan Project. He recalls some conflict between the scientists and engineers, the importance of industry in the project, and the initial problems with the startup of the B Reactor.

Sir Rudolf Peierls was a German-born physicist. He worked with Wolfgang Pauli in Switzerland, and moved to England when Hitler rose to power in 1933. In March 1940, Peierls and fellow colleague Otto Frisch co-authored the Frisch-Peierls memorandum, the first technical exposition of a practical atomic weapon. Peierls joined the British Mission and worked on the Manhattan Project in New York and Los Alamos. In this interview, Peierls discusses his work in atomic research and how the Frisch-Peierls memorandum was developed. He recalls going sailing with Oppenheimer, and how the scientists at Los Alamos respected Oppenheimer’s leadership.

J.C. Hobbs was an American inventor and engineer who created a key part of the valves used in the K-25 gaseous diffusion plant in Oak Ridge, Tennessee. Hobbs was brought on to the Manhattan Project by the head of the Kellex Corporation, Percival Keith, to improve the piping system in the K-25 plant. In this interview, Hobbs discusses his career in industrial engineering, the work environment in New York, and the development of the valves that proved crucial to the success of gaseous diffusion.