Merchant W. Bradley

A. F. Lisner, Jr.

A. F. Lisner, Jr. worked for the Union Carbide & Carbon Corporation.

F. E. Donoghue

Donoghue worked in the United States Engineer District Office.

Charles W. Hagen

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

E. S. Andrew