National Museum of Nuclear Science & History
A. Roach worked for the United States Engineer District Office.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Clyde Crowley worked for the Roane-Anderson Company.
Gale Young was a research associate in theoretical studies at the University of Chicago Met Lab. Before joining the Manhattan Project in 1942, Young taught mathematics and physics at Olivet College.
