Joseph H. Leopold

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.

H. L. Roland

H. L. Roland worked for the Midwest Piping and Supply Company.

James R. McGuffey

Attended Pennsylvania State University.

William A. Smith