National Museum of Nuclear Science & History
J. C. Doucha worked for the J.A. Jones Construction Company.
Ben Benjamin was a sergeant in the Special Engineer Detachment during the Manhattan Project. He had previously worked in industry making lenses and prisms, and was assigned to the Optics Group to help with photographing the Trinity Test.
Norman Harry Nachtrieb was an American chemist who worked on the Manhattan Project at the University of Chicago and Los Alamos.
