Henry McDonald, Jr.

Ralph Levey

Levey was a member of the Army Special Engineering Detachment who worked at the K-25 plant at Oak Ridge during the Manhattan Project.

Eugene Gardner

Glen Montgomery

Glen Montgomery was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

A. H. Frost

A. H. Frost worked for the Tennessee Eastman Corporation at the Y-12 Plant.