National Museum of Nuclear Science & History
W. W. Johnson worked for the Kellex Corporation at the K-25 Plant.
Mack worked at the 300 Area at Hanford during the Manhattan Project.
Mary Kelly was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Earl Thomas was an American physicist. After receiving his Ph.D. from CalTech in 1943, he moved to New Mexico to work with the Navy on rocket design and production for the Manhattan Project.