National Museum of Nuclear Science & History
W. A. Chalkley worked for the Tennessee Eastman Corporation at the Y-12 Plant.
J. H. Marsh worked for the Kellex Corporation at the K-25 Plant.
Andrew Stehney was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Sloan worked at the 100-B Area at Hanford during the Manhattan Project.