National Museum of Nuclear Science & History
R. W. Addington worked for the J.A. Jones Construction 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.
Daniel M. Gowans served in the 1st Ordnance Squadron.
W. T. Sergeant worked for the United States Engineer District Office.
