Robert A. Benson

William A. McDonald

A. R. Johnson

A. R. Johnson worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Frank E. Keene

Frank E. Keene was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

W. A. Briggs

Briggs worked at the 100-D Area at Hanford during the Manhattan Project.