National Museum of Nuclear Science & History
O. H. Moyer worked for the J.A. Jones Construction Company.
Cyril Smith (1903-1992) was a British metallurgist. He was married to the historian Alice Kimball Smith.
Blum worked in the United States Engineer District Office.
Helen Williams was a stenographer and clerk at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.