National Museum of Nuclear Science & History
Irvin Mastin worked for the J.A. Jones Construction Company.
D. C. Shugart worked for the United States Engineer District Office.
Hendrickson worked in the United States Engineer District Office.
Robert Spencer Stone (1895-1966) was a radiologist and headed the Health Division of the Chicago Metallurgical Laboratory (Met Lab) during the Manhattan Project.
Howard Braasch was a laborer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
