W. Bell, Jr.

Edward J. Fredrick

Edward J. Fredrick was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

John P. Fitzpatrick

R. J. Guthrie

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

Gerhardt Padalski

Gerhardt Padalski was a staff worker at Los Alamos during the Manhattan Project.