National Museum of Nuclear Science & History
Sidney Yenny was a staff worker at Los Alamos during the Manhattan Project.
Thomas Chaney worked for the Tennessee Eastman Corporation at the Y-12 Plant.
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.
