National Museum of Nuclear Science & History
R. M. Smith worked for the United States Engineer District Office.
Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Herbert Potratz was an American chemist. Potratz was born in 1902 in Iowa. He received a B.S., an M.S.
W. H. Zimmer worked for the United States Engineer District Office.
