National Museum of Nuclear Science & History
Sir Rudolf Peierls (1907-1995) was a German-born British physicist. In March 1940, Peierls and fellow collegue Otto Frisch co-authored the Frisch-Peierls memorandum, the first technical exposition of a practical atomic weapon.
Alfred “Al” Wiora served in the army at Los Alamos during the Manhattan Project. He studied at the University of Pennsylvania and later worked at the Hughes Aircraft Company in Tuscon, Arizona.