National Museum of Nuclear Science & History
James C. Hart was a DuPont chemist and member of the health physics group during the Manhattan Project.
Nathaniel Saxe worked for the Kellex Corporation at the K-25 Plant.
Rozel E. Curtis was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Charles J. Spiegl was a civilian scientist employed by the Manhattan Project. He was involved in radiation toxicology, studying the effects of radiation on animals at the Trinity Site near Alamogordo, New Mexico.
