National Museum of Nuclear Science & History
Harold Smith worked for the Kellex Corporation at the K-25 Plant.
Clarke C. Mathison served in the 320th Troop Carrier Squadron.
Madeline Sohn was a research assistant in the chemistry division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Howard Lange was the Curator in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
