National Museum of Nuclear Science & History
Tabb worked at the 100-D Area and 300 Area at Hanford during the Manhattan Project.
J. C. Ridenour worked for the Roane-Anderson Company.
F. A. Wallin worked for the Kellex Corporation at the K-25 Plant.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.