National Museum of Nuclear Science & History
D. W. Cardwell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
P. R. Payne worked for the Roane-Anderson Company.
Edward Smith was a chemical engineer employed by the civilian contractor Eastman Kodak at the K-25 Plant in Oak Ridge, Tennessee.
Soffe worked at the 200 East Area at Hanford during the Manhattan Project.