National Museum of Nuclear Science & History
Gatlin worked in the United States Engineer District Office.
Brown worked in the United States Engineer District Office.
Carl C. Mason served as a private first class in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Up An’ Atom.
Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
