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.
Frank Cook worked for the JA Jones Construction Company in Oak Ridge, Tennessee during the Manhattan Project.
Edwin M. Bell served as a staff sergeant in the 393rd Bombardment Squadron.
Arthur Levy was a member of the Special Engineering Detachment responsible for developing high explosive casting procedures for the Fat Man plutonium bomb at S-Site at Los Alamos.
