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.
Mark L. Bayrik, Jr. served in the 320th Troop Carrier Squadron.
G. H. McLarty worked for the Kellex Corporation at the K-25 Plant.
John Geffel worked at Oak Ridge as the Prime Building Contractor for Construction of the Oak Ridge facilities.
Walter Horne worked on the Manhattan Project as a chemist at the Y-12 Plant in Oak Ridge Tennesee from 1943 to 1945.