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.

James S. Cole is an American engineer. He served as an airplane engineer during World War II, and began working at the K-25 plant at Oak Ridge, TN in 1945, shortly after the end of the war. Cole later worked at the Y-12 plant. In this interview, he recalls his early days at Oak Ridge and how he adjusted to the new environment. He shares several stories about his time working at K-25, including finding ways to fix broken pumps and valves. He also explains the importance of the Special Engineer Detachment and members of the military to the Manhattan Project.

Victor Kumin was a young scientist when he was drafted into the U.S. Army in 1944. In September of that year, he was transferred to Los Alamos, where he was a member of the Special Engineer Detachment (SED). In this interview, courtesy of the Story Preservation Initiative, Kumin discusses his time as a Chemistry student at Harvard and joining the Manhattan Project at Los Alamos. He recalls the secrecy of the project and how he felt about the decision to use the atomic bombs.

Al Zeltmann grew up in Brooklyn, New York. After being drafted into the Army during World War II, he was assigned to the Special Engineer Detachment and arrived at Los Alamos in 1944. After the war, he stayed at Los Alamos, and worked as a physical chemist at the Los Alamos laboratory for nearly 40 years. In this interview, he recalls his Manhattan Project work, including on the “RaLa” experiments with Gerhart Friedlander, and describes the relationship between the military and civilians on “The Hill.” He also remembers receiving some unusual instructions from a mail censor after his wife complained he “wasn’t very warm” in his letters.

Felix DePaula was an Army private stationed at the Trinity Site and Los Alamos during the Manhattan Project. After the war, DePaula stayed at Los Alamos, and worked for the Zia Company there. In this interview, DePaula talks about life at Trinity Site, especially the isolation and the entertainment he and his fellow soldiers would come up with to pass the time. He describes the rodeos the military police would help set up. DePaula also witnessed the Trinity test, and talks about the feeling among the troops after seeing the detonation. He also recalls the high security at the gates to Los Alamos.

William Ginell is a physical chemist who worked on the Manhattan Project. In this interview he describes how he became interested in chemistry and his experiences working at Columbia University and Oak Ridge, TN on the gaseous diffusion process. He reflects on the Army, living conditions, and the intense secrecy and security during the project. He also discusses his life after the war, especially his work at Brookhaven, Atomics International, and Douglas Aircraft.

Hal Behl and his wife, Reggie, an art teacher, arrived in Oak Ridge in 1945. A member of the Special Engineer Detachment, Behl served as Assistant Supervisor in an Engineering Department laboratory at the K-25 plant. He focused mainly on designing and building laboratory, process, health physics, and quality assurance equipment. In this interview, Behl describes everyday life at Oak Ridge and his experiences renting various rooms around the “Secret City.” He also discusses how his Manhattan Project work helped lead to his postwar career in aerospace and weapon system technology.

Donald Ross worked on the Manhattan Project at the University of California-Berkeley and the Y-12 Plant for Tennessee Eastman. In this interview, Ross discusses supervising “Calutron girls” at Y-12. He explains how the electromagnetic separation process for separating uranium isotopes work, and recalls the tight security at Oak Ridge. Ross also describes the social life at Oak Ridge, meeting his wife, and the terrible food in the mess halls. He discusses his views on dropping the bomb on Japan and how his thoughts have changed over time.

Born in Budapest, Hungary, Peter Lax fled Nazi persecution and came to America with his family at the age of 15. Drafted into the Army when he was 18, he joined other émigré scientists and mathematicians in Los Alamos to work on the Manhattan Project. In this interview, Lax discusses his work as a member of the Manhattan Project’s Special Engineer Detachment and his mathematical contributions to the challenges of neutron transport, fluid dynamics, and shockwaves. He vividly describes what life was like at Los Alamos and offers keen insights on the revolutionizing development of scientific computing and atomic energy. He also recalls the many contributions of the Hungarian mathematicians and scientists at Los Alamos, who were nicknamed “the Martians.”

William G. (“Bill”) Hudgins spent most of his childhood years in New Mexico. He first heard about a secret wartime laboratory at Los Alamos in 1943, when he was a student at the University of New Mexico. Hudgins joined the Manhattan Project after writing a letter to Dorothy McKibbin. After briefly being called away for Army training, he returned to Los Alamos as a member of the Special Engineer Detachment. In this interview, he recalls interviewing for a job with McKibbin (who asked, “Where did you hear about me?”) and shares his memories of other Manhattan Project figures, including scientist Rebecca Bradford Diven and project historian David Hawkins. He also describes growing up in Santa Fe, and details the geologic and Native American history of the region.