Otto C. Block, Jr.

Dorothy Pierce

Dorothy Pierce was a laboratory assistant in the Chemistry Division at the Chicago Met Lab during the Manhattan Project.

Anthony J. Matz

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.

K.M. Nicolson

J. M. Kitchen