National Museum of Nuclear Science & History
Clarence Yohn worked for the Tennessee Eastman Corporation at the Y-12 Plant.
James Roberts was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Before the war Oswald Greager was a high-ranking DuPont chemist. He took leave from DuPont in 1942 to join the Army's Chemical Warfare Service.
Charles Mallon worked for the Kellex Corporation at the K-25 Plant.
