National Museum of Nuclear Science & History
Waverly Smith was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Leo J. Czaja served in the 603rd Air Engineering Squadron.
David P. Rudolph was an administrator in charge of inventory at the Chicago Metallurgical Laboratory.
Arthur S. Olson was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.