National Museum of Nuclear Science & History
J. E. Crawford worked for the Midwest Piping and Supply 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.
Springer worked at the 200 West Area at Hanford during the Manhattan Project.
R. D. Campbell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
