National Museum of Nuclear Science & History
Roger Hall worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John Kenyon Kinnear, Sr. was raised in Brooklyn, NY. He joined the Army and because he was a tool and die maker, he was assigned to the Manhattan Project.
R. G. Mansfield worked for the Tennessee Eastman Corporation at the Y-12 Plant.
James Barton worked as a carpenter for the DuPont Company at the Hanford, Washington site. He never knew he was working on the atomic bomb until after it was dropped in Japan.