National Museum of Nuclear Science & History
Hugo Leckelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
C. W. McCollum worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Hudson D. Rosenthal served in the First Ordnance Squadron.
Eva Roberts was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.