National Museum of Nuclear Science & History
Gordon Simmons worked for the J.A. Jones Construction Company.
Sawdon S. Smith served in the 603rd Air Engineering Squadron.
Rolf Landshoff (1911-1999) was a German-American physicist. Soon after receiving a Ph.D. in engineering from the Institute of Technology in his native Berlin, Landshoff began to feel nervous about his place in his home country.
William St. Clair worked for the United States Engineer District Office.