Robert Dyer

Evelyn Manchester

Evelyn Manchester worked for the United States Engineer District Office.

Wilcox P. Overbeck

Wilcox P. Overbeck was a research associate and instrumentation designer at the Chicago Met Lab. He was responsible for calling out the neutron count when Chicago Pile-1 went critical on December 2, 1942.

Elizabeth Howlett

Elizabeth Howlett was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

R. F. Stainback