National Museum of Nuclear Science & History
Martin Punis was a laboratory helper at the Chicago Met Lab during the Manhattan Project.
Crenner worked at the 300 Area at Hanford during the Manhattan Project.
N. B. Newcomb worked for the Kellex Corporation at the K-25 Plant.
Leonard Krouldis was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.