Louis J. Ruotolo

N. J. Fisch

Fisch worked for Stone and Webster Engineering Corporation.

Philip Grant Koontz

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

Charles W. Hagen

Charles W. Hagen was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

John Hermann