National Museum of Nuclear Science & History
Halpern worked in the United States Engineer District Office.
Stanley A. Kiedrowski served as a sergeant in the 393rd Bombardment Squadron.
P. B. Mayo, Jr. worked for the J.A. Jones Construction Company.
Charles K. Krause was a consultant for the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Robert O. Nohr was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
