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  2. Mark 39 nuclear bomb - Wikipedia

    en.wikipedia.org/wiki/Mark_39_nuclear_bomb

    The Mark 39 design was a thermonuclear bomb and had a yield of 3.8 megatons. [1] It weighed 6,500–6,750 pounds (2,950–3,060 kilograms), [2] and was about 11 feet, 8 inches long (3.556 meters) [2] with a diameter of 35 inches (89 cm). [2] The design is an improved Mark 15 nuclear bomb design (the TX-15-X3 design and Mark 39 Mod 0 were the ...

  3. Operation Plumbbob - Wikipedia

    en.wikipedia.org/wiki/Operation_Plumbbob

    The operation consisted of 29 explosions, of which only two did not produce any nuclear yield.Twenty-one laboratories and government agencies were involved. While most Operation Plumbbob tests contributed to the development of warheads for intercontinental and intermediate range missiles, they also tested air defense and anti-submarine warheads with smaller yields.

  4. List of military nuclear accidents - Wikipedia

    en.wikipedia.org/wiki/List_of_military_nuclear...

    Nuclear bomb burned after B-47 aircraft accident B-47 aircraft crashed during take-off after a wheel exploded; one Mark 15 Mod 0 nuclear bomb burned in the resulting fire. [34] The aircraft was carrying the unarmed weapon in a ferry configuration in the bomb bay, and the nuclear capsule in the crew compartment.

  5. Thermonuclear weapon - Wikipedia

    en.wikipedia.org/wiki/Thermonuclear_weapon

    A second set of tests was scheduled, with testing recommencing in September 1957. The first test was based on a "… new simpler design. A two-stage thermonuclear bomb that had a much more powerful trigger". This test Grapple X Round C was exploded on 8 November and yielded approximately 1.8 Mt (7.5 PJ).

  6. 1980 Damascus Titan missile explosion - Wikipedia

    en.wikipedia.org/wiki/1980_Damascus_Titan...

    The initial explosion catapulted the 740-ton silo door away from the silo and ejected the second stage and warhead. Once clear of the silo, the second stage exploded. The W53 thermonuclear warhead landed about 100 feet (30 m) from the launch complex's entry gate. Its safety features prevented any loss of radioactive material or nuclear detonation.

  7. 1966 Palomares incident - Wikipedia

    en.wikipedia.org/wiki/1966_Palomares_incident

    The amount is nominal, usually 1 or 2 percent, sometimes a bit more, of the intrinsic value to the owner of the thing salved. But the thing salved off Palomares was a thermonuclear bomb, the same bomb valued by no less an authority than the Secretary of Defense at $2 billion—each percent of which is, of course, $20 million.

  8. 1961 Goldsboro B-52 crash - Wikipedia

    en.wikipedia.org/wiki/1961_Goldsboro_B-52_crash

    The two Mark 39 Mod 2 nuclear bombs involved in the Goldsboro crash had distinctly different outcomes. Official reports identified them as weapon no. 1 (or bomb no. 1) and weapon no. 2 (or bomb no. 2), with the first's parachute having deployed and the second having crashed into the ground in free-fall without any decrease in its speed.

  9. Mark 36 nuclear bomb - Wikipedia

    en.wikipedia.org/wiki/Mark_36_nuclear_bomb

    The Mark 36 bomb was 56.2 to 59 inches (143 to 150 cm) in diameter, depending on version, and 150 inches (3.8 m) long. It weighed 17,500 or 17,700 pounds (7,900 or 8,000 kg) depending on version. There were two major variants, conventional ("dirty") weapon designated the Y1 and a low fission fraction "clean" Y2 version. [ 3 ]