National Museum of Nuclear Science & History
M. A. Ruth worked for the United States Engineer District Office.
P. Lambeth worked for the Comstock-Bryant Electric Company.
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.
F. A. Thomas worked for the Edenfield Electric Company.
