National Museum of Nuclear Science & History
Halbrook worked in the United States Engineer District Office.
W. A. Collins worked for the Poe Piping & Heating Company.
Olga M. Klicek was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
S. F. Vesser worked for the J.A. Jones Construction Company.
