National Museum of Nuclear Science & History
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
Douglas Morgan served in the Army at Los Alamos during the Manhattan Project.
Alexander worked at the 100 D Area at Hanford during the Manhattan Project.
Alfred Neyens served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.