National Museum of Nuclear Science & History
F. J. Troy worked for the United States Engineer District Office.
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Frank D. Duffy served in the 393rd Bombardment Squadron.
Francis L. Friedman was a theoretical physicist and group leader at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
