National Museum of Nuclear Science & History
Ralph Nobles was one of three brothers to work on the Manhattan Project. He and his brother William worked at Los Alamos, while brother Robert was at the University of Chicago’s Metallurgical Laboratory.
Bill Cease worked in the 100 and 300 areas at Hanford, working as a patrolman and later as an operator at B Reactor and D Reactor.
Sievers worked at the 300 Area at Hanford during the Manhattan Project.