National Museum of Nuclear Science & History
Jack Hefner joined the Manhattan Project at Oak Ridge in 1943. Hefner was a reactor engineer and helped supervise the construction of the X-10 Graphite Reactor.
Leo Szilard (1898-1964) was a Hungarian-American physicist and inventor. EARLY LIFE Leo Szilard was born Leo Spitz on February 11, 1898 in Budapest, Hungary.
W. O. Wigtil worked for the Tennessee Eastman Corporation at the Y-12 Plant.
