National Museum of Nuclear Science & History
Frederick Rich worked for the Union Carbide & Carbon Corporation.
H. H. Maples worked for the Roane-Anderson Company.
Hood worked at the 200 West Area at Hanford 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.