National Museum of Nuclear Science & History
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.
Anderson was a Union Carbide employee who worked on startup operations at the K-25 plant at Oak Ridge during the Manhattan Project.
Warren Best served as a sergeant in the 393rd Bombardment Squadron.
Hankal worked for Stone and Webster Engineering Corporation.
