National Museum of Nuclear Science & History
Frank Watson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
George Graves was a technical advisor at Hanford, and so famous there that he inspired a poem: "We'd called up a tight design/ Hewn strictly to the longhairs' line.
Robert Schwerin was drafted shortly before the end of the war, in 1945. Following the war, he re-enlisted to avoid being put on a desk job.