National Museum of Nuclear Science & History
A. M. Hartman worked for the Roane-Anderson Company.
Cordell W. Callahan served in the 1st Ordnance Squadron.
Newcombe worked at the 200 East Area at Hanford during the Manhattan Project.
Dickinson worked in the United States Engineer District Office.
R. A Winkel worked for the Union Carbide & Carbon Corporation. At Oak Ridge he assisted in the development of the K-25 plant.
