T.J. Ryan

M.B. Gardner

E. S. Bettis

E. S. Bettis worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Opaline Calhoun

Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Esther Floth

Esther (Green) Floth worked as a secretary for General Leslie Groves during the Manhattan Project in Washington, DC.