National Museum of Nuclear Science & History
James R. Chapman was an engineer working for Stone & Webster when he was recruited to work on the Manhattan Project.
F. J. Underwood worked for the Roane-Anderson Company.
Alvin Vanvessem was a member of the Special Enginner Detatchment (SED) at Los Alamos during the Manhattan Project.
Mont J. Mickelson served in the 603rd Air Engineering Squadron.