National Museum of Nuclear Science & History
R. G. Humphries worked for the United States Engineer District Office.
John “Jake” Warner was an American chemist and the President of the Carnegie Institute of Technology, today known as Carnegie Mellon University.
Melvin Bengston was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Annie Lee Patterson was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
