National Museum of Nuclear Science & History
John L. Willoughby served as a sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Bockscar.
Hyman H. Goldsmith (1907-1949) was an American physicist. In 1943, Goldsmith became coordinator of information for the Metallurgical Lab in Chicago.
Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.