Nuclear technology the element plutonium possesses an isotope that is sufficiently unstable for this process to be usable. Terrestrial plutonium does not currently occur naturally in sufficient quantities for such use, so it must be manufactured in a nuclear reactor. Ultimately, the Manhattan Project manufactured nuclear weapons based on each of these elements. They detonated the first nuclear weapon in a test code-named "Trinity", near Alamogordo, New Mexico, on July 16, 1945. The test was conducted to ensure that the implosion method of detonation would work, which it did. A uranium bomb, Little Boy, was dropped on the Japanese city Hiroshima on
Mark 10 nuclear bomb a Nuclear bunker buster. The Mark 10 was nicknamed the "Airburst Elsie"; the Mark 8 had been nicknamed the LC or Light Casing bomb, which was then expanded to "Elsie". The Mark 10 was 12 inches in diameter and weighed 1,500 or 1,750 pounds. It had a design yield of 12 to 15 kilotons. The Mark 10 design was cancelled in 1952, replaced by the implosion-type Mark 12 nuclear bomb which was lighter and used considerably less fissile nuclear material. Mark 10 nuclear bomb The Mark 10 nuclear bomb was a proposed American nuclear bomb based on the earlier Mark