National Museum of Nuclear Science & History
Frank Graham worked for the Midwest Piping and Supply Company.
George Tilley was a staff worker at Los Alamos 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.
John Wlodarski served in the 603rd Air Engineering Squadron.
