National Museum of Nuclear Science & History
John Geffel worked at Oak Ridge as the Prime Building Contractor for Construction of the Oak Ridge facilities.
Walker worked at the 100-D Area at Hanford during the Manhattan Project.
D. G. Graham worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John William Starner joined the Manhattan Project in December 1943 as a member of the Special Engineer Detachement at Los Alamos.
