National Museum of Nuclear Science & History
J. S. Staples worked for the Fercleve Corporation.
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.
W. T. Yates worked for the Roane-Anderson Company.
Blum worked in the United States Engineer District Office.
