![]() ![]() The accident was categorized as a Broken Arrow, that is an accident involving a nuclear weapon but which does not present a risk of war. ![]() All of the sixteen crew members and one passenger were able to parachute from the plane and twelve were subsequently rescued from Princess Royal Island. The weapon's high explosives detonated upon impact with a bright flash visible. Fearing that severe weather and icing would jeopardize a safe emergency landing, the weapon was jettisoned over the Pacific Ocean from a height of 8,000 ft (2,400 m). After six hours of flight, the bomber experienced mechanical problems and was forced to shut down three of its six engines at an altitude of 12,000 feet (3,700 m). The warhead contained conventional explosives and natural uranium but lacked the plutonium core of an actual weapon. 44-92075, was flying a simulated combat mission from Eielson Air Force Base, near Fairbanks, Alaska, to Carswell Air Force Base in Fort Worth, Texas, carrying one weapon containing a dummy warhead. The weapon was briefly thought to have been located by a civilian diver in 2016 near Pitt Island but this was subsequently found not to be the case. Four years later the wreckage was found and searched, but no bomb was found. The bomber eventually crashed at an unknown location in Canada. The crew reported releasing the weapon out of concern for the amount of TNT inside, alone, before they bailed out of the aircraft. Main article: 1950 British Columbia B-36 crashĪ simulated nuclear bomb containing TNT and uranium, but without the plutonium needed to create a nuclear explosion, was proactively dumped in the Pacific Ocean after a Convair B-36 bomber's engines caught fire during a test of its ability to carry nuclear payloads. Loss of nuclear bomb/Non-nuclear detonation of nuclear bomb. Slotin worked with the same bomb core as Daghlian which became known as the " demon core." It was later melted down and combined with existing weapons-grade material. Seven observers, who received doses as high as 166 rads, survived, yet three died within a few decades from conditions believed to be radiation-related. Slotin died on May 30 from massive radiation poisoning, with an estimated dose of 1,000 rads (rad), or 10 grays (Gy). A momentary slip of a screwdriver caused a prompt critical reaction. While demonstrating his technique to visiting scientists at Los Alamos, Canadian physicist Louis Slotin manually assembled a critical mass of plutonium. ![]() Ī sketch of Louis Slotin's criticality accident used to determine exposure of those in the room at the time. ![]() He quickly removed the brick, but was fatally irradiated, and died on September 15. Harry Daghlian dropped a tungsten carbide brick onto a plutonium core, inadvertently creating a critical mass at the Los Alamos Omega site. Los Alamos National Laboratory, Los Alamos, New Mexico, United States Burning uranium powder scattered throughout the lab causing a larger fire at the facility. The burning uranium boiled the water jacket, generating enough steam pressure to blow the reactor apart. During the inspection, air leaked in, igniting the uranium powder inside. Leipzig L-IV experiment accident: Shortly after the Leipzig L-IV atomic pile – worked on by Werner Heisenberg and Robert Doepel – demonstrated Germany's first signs of neutron propagation, the device was checked for a possible heavy water leak. This list may be incomplete due to military secrecy. To qualify as "accident", the damage should not be intentional, unlike in nuclear warfare.To qualify as "military", the nuclear operation/material must be principally for military purposes.There must be well-attested and substantial health risks associated with nuclear materials.In listing military nuclear accidents, the following criteria have been adopted: For other lists, see Lists of nuclear disasters and radioactive incidents. For a general discussion of both civilian and military accidents, see nuclear and radiation accidents. Civilian accidents are listed at List of civilian nuclear accidents. This article lists notable military accidents involving nuclear material. ![]()
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