National Museum of Nuclear Science & History
J. E. Mason worked for the Roane-Anderson Company.
Robert Stone was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Larrie Arnold worked for the Tennessee Eastman Corporation at the Y-12 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.
Luther Carpenter worked for the Kellex Corporation at the K-25 Plant.
