National Museum of Nuclear Science & History
Christianson worked at the 100-F Area at Hanford during the Manhattan Project.
N. B. Newcomb worked for the Kellex Corporation at the K-25 Plant.
W. A. Chalkley worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Melvin Bengston was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.