National Museum of Nuclear Science & History
H. C. Smith worked for the United States Engineer District Office.
William R. Purnell (1886-1955) was a Rear Admiral in the US Navy and served as the Navy liaison on the Military Policy Committee for the Manhattan Project.
Robert Cohen was an American chemist. Cohen was born in 1923 in Rochester, NY. He received a B.S. in Chemical Engineering in 1944 and an M.
Alfred Pfanstiehl was a junior physicist at the Chicago Met Lab during the Manhattan Project. Pfanstiehl was a signatory of the Szilard Petition, an attempt to avert military use of the atomic bomb against Japan.
