National Museum of Nuclear Science & History
Eugene Edwards worked for the Roane-Anderson Company.
Henry Fritz was a chemist in the Special Engineering Detachment assigned to the K-25 Plant in Oak Ridge, Tennesee.
John Riddle was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Charles W. Hagen was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
