National Museum of Nuclear Science & History
H. V. Appen worked for the J.A. Jones Construction Company.
Gavin Hadden was an American civil engineer who served as special assistant to General Leslie R. Groves during the Manhattan Project.
Quentin V. Larson was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Bohden worked in the United States Engineer District Office.
