National Museum of Nuclear Science & History
Betz worked at Los Alamos during the Manhattan Project.
Armstrong worked at the 200 West and 300 Areas at Hanford 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.
