National Museum of Nuclear Science & History
Conen served as a first lieutenant in the 393rd Bombardment Squadron. He participated in the mission to bomb Hiroshima as a flight engineer for the Top Secret.
John Crawford was a physicist and research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Marshall Holloway was an American physicist. He received his PhD in physics from Cornell University. In 1942, he directed a secret Manhattan Project assignment at Purdue University.
