National Museum of Nuclear Science & History
Harold Seward worked for the Roane-Anderson Company.
Frederick D. Kopka served in the 1027th Air Material Squadron.
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.
Robert J. Westmark served in the First Ordnance Squadron.
