National Museum of Nuclear Science & History
Ray Moneyhun worked for the Fercleve Corporation.
N. W. Lowery worked for the Roane-Anderson Company.
Helgeson worked at the 300 Area at Hanford during the Manhattan Project.
A. A. Maupin worked for the Kellex Corporation at the K-25 Plant.
H.A. Fettinger was a junior physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.