National Museum of Nuclear Science & History
H. B. Mills worked for the United States Engineer District Office.
J. R. McClellan worked for the Roane-Anderson Company.
Robert J. Moon (1911-1989) was a physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project and a signer of the Szilard petition.
Herschel Warren was a staff worker at Los Alamos during the Manhattan Project.