National Museum of Nuclear Science & History
Engel worked in the United States Engineer District Office.
Edward F. Kolley was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Josephine Hinch was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Charles Mallon worked for the Kellex Corporation at the K-25 Plant.
