Charles Dietrich

Blanche J. Lawrence

Blanche J. Lawrence was an African-American research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

J.A. Sandlin

H. F. Koch

H. F. Koch worked for the Tennessee Eastman Corporation at the Y-12 Plant.

R. G. Humphries

R. G. Humphries worked for the United States Engineer District Office.