National Museum of Nuclear Science & History
J. C. Watkins worked for the United States Engineer District Office.
Joseph Hans worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Houston Willson worked for the United States Engineer District Office.
Betty Tellefson was a staff worker at Los Alamos during the Manhattan Project.
Ellis Steinberg was an American Chemist. He was a junior chemist at the Metallurgical Laboratory in Chicago during the Manhattan Project.