National Museum of Nuclear Science & History
N. J. Holland worked for the Roane-Anderson Company.
Eleanor Ewing Ehrlich (1918-2011) was an American mathematician. During the Manhattan Project, Ewing worked at Los Alamos and helped run the IBM calculating team.
Robert Harrison was an engineer in the Special Engineering Detachment (SED) in Oak Ridge, Tennessee from August 1944 to August 1945.