National Museum of Nuclear Science & History
W. A. Plumb worked for the United States Engineer District Office.
Charles Maier was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Anthony J. (“Tony”) Matz was a procurement officer at the University of Chicago Met Lab. He helped obtain, handle, and move many of the materials for Chicago Pile-1 and witnessed it going critical on December 2, 1942.
Frank Ross served in the Army at Los Alamos during the Manhattan Project.
