National Museum of Nuclear Science & History
M. E. Gregson worked for the Roane-Anderson Company.
D. I. Nicholson worked for the United States Engineer District Office.
C. W. Cryer worked for the Midwest Piping and Supply Company.
Leon Sayvetz was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Charles Mignon worked for the Kellex Corporation at the K-25 Plant.
