W. J. Callahan

Fred H. Saak

Fred Saak served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.

Quentin V. Larson

Quentin V. Larson was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

P. G. Bintz

Olen J. Harris