National Museum of Nuclear Science & History
W. G. Butler worked for the J.A. Jones Construction Company.
Arthur Harold Jaffey was an associate chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Andrew H. MacMahon was the Chief Property Officer of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Walter Brill worked for the Fercleve Corporation.
