National Museum of Nuclear Science & History
Henry Martin worked for the J.A. Jones Construction Company.
Roy Bonsib was a research associte at the Metallurgical Laboratory in Chicago during the Manhattan Project.
T. M. Keiller worked for the United States Engineer District Office.
Frank Jones worked for the Roane-Anderson Company.
John Mihalkanin was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
