Robert L. Higgins

H. Belgorad

H. E. Armstrong

H. E. Armstrong worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Robert Martens

Robert Martens was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Edward Czuba

Edward Czuba was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.