J.E. Irwin

Eugenia M. Jackson

Eugenia M. Jackson was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Benjamin N. Nelson

Benjamin Nelson served in the Army at Los Alamos during the Manhattan Project.

R. J. Guthrie

R. J. Guthrie worked for the Watson-Flagg Engineering Company.

H. G. Warren