National Museum of Nuclear Science & History
Greenhalgh worked in the United States Engineer District Office.
Duane Sewell began working with the Manhattan Project in 1941. He was one of the first people to arrive at Oak Ridge and experienced first-hand some of the difficulties there with cyclotrons and isotope separation.
Vera Williams was in charge of the housing office at Los Alamos during the Manhattan Project. The wife of physicist John Williams, she also helped organize a maid service to help with housework and childcare.
