M. B. Parker

Ella B. Tyree

Ella Tyree was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.

S.T. Cantrill

S. T. Cantrill was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

George Hale

C. E. Twigg

C. E. Twigg worked for the Tennessee Eastman Corporation at the Y-12 Plant.