National Museum of Nuclear Science & History
Manning worked for Stone and Webster Engineering Corporation.
Louis Fasulo worked at Los Alamos for nine years, beginning in 1943. In 1952, he began a 31 year long career with the Rocky Flats nuclear weapons plant.
W. P. Perry worked for the Union Carbide & Carbon Corporation.
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.