James L. Fox, Jr.

Elmer F. Kelley

Jay Wechsler

Jay Wechsler enlisted in the Army in 1943 and spent several months at Oak Ridge working as an Army construction engineer, In the winter of 1943, he was suddenly transferred to Los Alamos, where he began working directly with Otto Frisch.

L. J. Ritter

L. J. Ritter worked for the Roane-Anderson Company.

Eleanor F. Caldwell

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