National Museum of Nuclear Science & History
Blackstone worked in the United States Engineer District Office.
A. H. Femmel served in the 390th Air Service Group.
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.
Holmes worked at the 300 Area at Hanford during the Manhattan Project.
