Haakon Chevalier - Part 1: Haakon Chevalier was a French literature professor at Berkeley and close friend of J. Robert Oppenheimer. In this interview, Chevalier discusses aspects of Oppenheimer's personal life, including his romantic relationships and family, hobbies including learning Sanskrit, and religious views. He recalls how Oppenheimer became involved in politics on the Berkeley campus. He also discusses who was present for his infamous conversation with Oppenheimer, in which Chevalier told Oppie he knew a way to pass scientific secrets to the Soviets. This conversation played a key role in Oppenheimer's security trial in 1954.

Hanford 25th Anniversary Celebration: This program was recorded at the 25th anniversary of the construction of the B Reactor, the world's first full-scale nuclear reactor, in Hanford, WA. Leading Manhattan Project scientists, including Glenn Seaborg, John Wheeler, Lombard Squires, and Norman Hilberry, as well as its military leaders, General Leslie R. Groves and Colonel Franklin Matthias, participated in the ceremony. They discussed the start of the Manhattan Project, how the reactor's site was chosen, and other information about the project.

J. Samuel Walker is the former historian of the U.S. Nuclear Regulatory Commission and the author of "Prompt and Utter Destruction: Truman and the Use of Atomic Bombs against Japan." In this interview, he describes the motivations behind President Truman's decision to authorize the use of the atomic bombs. He explains the key differences between "traditionalist" and "revisionist" interpretations, and identifies weaknesses in each perspective's argument. He also assesses the role of the Soviet declaration of war against Japan, whether the Japanese were ready to surrender before the bombs were dropped, and American plans for an invasion of mainland Japan. Walker concludes by recalling President Truman's reaction to the human impact of the bomb.

Raymond Grills was a DuPont physical chemist who worked at the Met Lab and later at Hanford during the Manhattan Project. While at Hanford, he was one of two men who invented the canning process that sealed uranium slugs for use in Hanford's water-cooled nuclear reactors. In this interview, he describes the challenges and pressures he and his colleagues had to overcome, and explains why the canning had to be designed perfectly. He also describes humorous encounters with a machinist and a railroad porter while transporting uranium slugs.

Bill and Louise Cease: Bill Cease worked in the 100 and 300 areas at Hanford, working as a patrolman and later as an operator at B Reactor and D Reactor. His wife Louise accompanied him to Hanford, and worked at Penney's. In this interview, Bill discusses how he came to work at Hanford in 1944 after working in Bridgeport, PA, at the Remington Plant making explosives. Bill elaborates on the various roles he had at Hanford, what working conditions were like, the technical aspects of his work, and his reactions to the bomb. Bill and Louise also discuss social life at Hanford, what the living conditions were like, and how the dust impacted them.