George Graber

G. W. Flack

G. W. Flack worked for the Union Carbide & Carbon Corporation.

C. V. Griffin

T. J. O’Donnell

T. J. O’Donnell was the Shop Chief at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Lester Orlan Keen

Lester Orlan Keen worked as an engineering draftsman at Hanford during the Manhattan Project. His son, Jack Keen, was a young boy at the time.