National Museum of Nuclear Science & History
John Manthey worked for the United States Engineer District Office.
Wayne Marshall was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Betty L. Carlson was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John Venerable was a guard at the Chicago Met Lab during the Manhattan Project.
