National Museum of Nuclear Science & History
Eugene Edwards worked for the Roane-Anderson Company.
Clarence Grover Sproul worked as a machinist on the Manhattan Project in Los Alamos, NM from January through June 1945.
Marion Edward Cieslicki was an Polish American metallurgist who worked on the Manhattan Project from 1944 to 1946 at the University of Chicago and at Los Alamos.
A. L. Bladholm worked for the J.A. Jones Construction Company.
F. M. Downs worked for the J.A. Jones Construction Company.