National Museum of Nuclear Science & History
Leo Safranski was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Robert A. Berardo served in the 509th Headquarters and Base Services Squadron.
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
J. S. Staples worked for the Fercleve Corporation.
Roger Rasmussen was an electrical engineer and member of the Special Engineer Detachment at Los Alamos.