H. C. Montford

H. S. Traynor

H. S. Traynor worked for the United States Engineer District Office.

Frank R. Johnson

Frank R. Johnson was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

J.H. Rector

H. F. Jacobsen

H. F. Jacobsen worked for the Union Carbide & Carbon Corporation.