National Museum of Nuclear Science & History
Harper worked for Stone and Webster Engineering 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.
Anthony J. Okleshen worked in the shop at the University of Chicago’s Metallurgical Laboratory.
C. Labuzan worked for the Roane-Anderson Company.
