National Museum of Nuclear Science & History
Joseph Kouba was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
M. C. Labarr worked for the Kellex Corporation at the K-25 Plant.
Heath worked at the 200 East Area at Hanford during the Manhattan Project.
T. R. Disbrow worked for the Roane-Anderson Company.
Helen J. Arson was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.