National Museum of Nuclear Science & History
Brown worked in the United States Engineer District Office.
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Lawrence S. O’Rourke began working on the Manhattan Project at Columbia University after he was called up from the Army Reserves in 1943.
A. C. Blackman worked for the Edenfield Electric Company.
