National Museum of Nuclear Science & History
Arthur was a staff member at Los Alamos during the Manhattan Project.
Andrew Welch was a janitor at the Chicago Met Lab during the Manhattan Project.
Morris R. Jeppson served as a lieutenant in the 1st Ordnance Squadron. He also worked as a weapons test officer.
Rolland Perry was a staff worker at Los Alamos during the Manhattan Project.
R. M. Van Petten worked for the Kellex Corporation at the K-25 Plant.
