National Museum of Nuclear Science & History
Alfonso Tammaro worked for the United States Engineer District Office.
Mary Tinsley was a laboratory techinician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
George Miller was a research assistant at the University of Chicago Met Lab. He was present when Chicago Pile-1 went critical on December 2, 1942.
Frank J. Schnettler was an American metallurgist who studied the properties of plutonium at Los Alamos.
