National Museum of Nuclear Science & History
R. Petyko worked for the Roane-Anderson Company.
Gerald F. Smith served in the Special Engineer Detachment at Los Alamos, NM during the Manhattan Project.
Marvin H. Arnold, Jr. served in the 320th Troop Carrier Squadron.
Ernest E. Wollan was a research associate at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
