Jewish culture and many Jewish scientists had a significant role in the project. The theoretical physicist Robert Oppenheimer, often considered as the ""father of the atomic bomb"", was chosen to direct the Manhattan Project at Los Alamos National Laboratory in 1942. The physicist Leó Szilárd, that conceived the nuclear chain reaction; Edward Teller, ""the father of the hydrogen bomb"" and Stanislaw Ulam; Eugene Wigner contributed to theory of Atomic nucleus and Elementary particle; Hans Bethe whose work included Stellar nucleosynthesis and was head of the Theoretical Division at the secret Los Alamos laboratory; Richard Feynman, Niels Bohr, Victor Weisskopf and Joseph Rotblat.
Mark 8 nuclear bomb Mark 8 nuclear bomb The Mark 8 nuclear bomb was a nuclear bomb, designed in the late 1940s and early 1950s, which was in service from 1952 to 1957. The Mark 8 was a gun-type nuclear bomb, which rapidly assembles several critical masses of fissile nuclear material by firing a fissile projectile or "bullet" into a hollow opening in a larger fissile "target", using a system which closely resembles a medium-sized cannon barrel and propellant. The Mark 8 was an early earth-penetrating bomb (see nuclear bunker buster), intended to dig into the earth some distance prior to detonating. According to