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  • Hiroshima, Japan
    Monday Aug 06, 1945

    The First Time To Use Nuclear Weapons In War

    Hiroshima, Japan
    Monday Aug 06, 1945

    On August 6, 1945, the U.S. Army Air Forces detonated a uranium gun-type fission bomb nicknamed "Little Boy" over the Japanese city of Hiroshima.




  • Nagasaki, Japan
    Thursday Aug 09, 1945

    The Second Time To Use Nuclear Weapons In War

    Nagasaki, Japan
    Thursday Aug 09, 1945

    On August 9, the U.S. Army Air Forces detonated a plutonium implosion-type fission bomb nicknamed "Fat Man" over the Japanese city of Nagasaki.




  • Los Alamos National Laboratory, New Mexico, U.S.
    Tuesday Aug 21, 1945

    Physicist Harry Daghlian received a lethal dose of radiation

    Los Alamos National Laboratory, New Mexico, U.S.
    Tuesday Aug 21, 1945

    21 August 1945: While conducting impromptu experiments on a third core (an alloy of plutonium and gallium) which had been prepared for atomic warfare at Los Alamos National Laboratory, physicist Harry Daghlian received a lethal dose of radiation. He died on 15 September 1945.




  • Los Alamos National Laboratory, New Mexico, U.S.
    Tuesday May 21, 1946

    Physicist Louis Slotin received a lethal dose of radiation

    Los Alamos National Laboratory, New Mexico, U.S.
    Tuesday May 21, 1946

    21 May 1946: While conducting further impromptu experiments on the third plutonium core at Los Alamos National Laboratory, physicist Louis Slotin received a lethal dose of radiation. He died on 30 May 1946.




  • British Columbia, Canada
    Monday Feb 13, 1950

    Jettisoning a Mark IV atomic bomb

    British Columbia, Canada
    Monday Feb 13, 1950

    February 13, 1950: a Convair B-36B crashed in northern British Columbia after jettisoning a Mark IV atomic bomb. This was the first such nuclear weapon loss in history.




  • London, England
    Saturday Jul 09, 1955

    The Russell–Einstein Manifesto

    London, England
    Saturday Jul 09, 1955

    The Russell–Einstein Manifesto was issued in London on July 9, 1955, by Bertrand Russell in the midst of the Cold War. It highlighted the dangers posed by nuclear weapons and called for world leaders to seek peaceful resolutions to international conflict.




  • Albuquerque, New Mexico, U.S.
    Wednesday May 22, 1957

    Mark-17 accident

    Albuquerque, New Mexico, U.S.
    Wednesday May 22, 1957

    May 22, 1957: a 42,000-pound (19,000 kg) Mark-17 hydrogen bomb accidentally fell from a bomber near Albuquerque, New Mexico. The detonation of the device's conventional explosives destroyed it on impact and formed a crater 25 feet (7.6 m) in diameter on land owned by the University of New Mexico. According to a researcher at the Natural Resources Defense Council, it was one of the most powerful bombs made to date.


  • New Jersey, U.S.
    Tuesday Jun 07, 1960

    The 1960 Fort Dix IM-99 accident

    New Jersey, U.S.
    Tuesday Jun 07, 1960

    June 7, 1960: the 1960 Fort Dix IM-99 accident destroyed a Boeing CIM-10 Bomarc nuclear missile and shelter and contaminated the BOMARC Missile Accident Site in New Jersey.


  • Goldsboro, North Carolina, U.S.
    Tuesday Jan 24, 1961

    The 1961 Goldsboro B-52 crash

    Goldsboro, North Carolina, U.S.
    Tuesday Jan 24, 1961

    January 24, 1961: the 1961 Goldsboro B-52 crash occurred near Goldsboro, North Carolina. A Boeing B-52 Stratofortress carrying two Mark 39 nuclear bombs broke up in mid-air, dropping its nuclear payload in the process.


  • Philippine Sea
    Sunday Dec 05, 1965

    1965 Philippine Sea A-4 crash

    Philippine Sea
    Sunday Dec 05, 1965

    1965 Philippine Sea A-4 crash, where a Skyhawk attack aircraft with a nuclear weapon fell into the sea.The pilot, the aircraft, and the B43 nuclear bomb were never recovered. It was not until 1989 that the Pentagon revealed the loss of the one-megaton bomb.


  • Mediterranean Sea
    Monday Jan 17, 1966

    The 1966 Palomares B-52 Crash

    Mediterranean Sea
    Monday Jan 17, 1966

    January 17, 1966: the 1966 Palomares B-52 crash occurred when a B-52G bomber of the USAF collided with a KC-135 tanker during mid-air refuelling off the coast of Spain. The KC-135 was completely destroyed when its fuel load ignited, killing all four crew members. The B-52G broke apart, killing three of the seven crew members aboard. Of the four Mk28 type hydrogen bombs the B-52G carried, three were found on land near Almería, Spain. The non-nuclear explosives in two of the weapons detonated upon impact with the ground, resulting in the contamination of a 2-square-kilometer (490-acre) (0.78 square mile) area by radioactive plutonium. The fourth, which fell into the Mediterranean Sea, was recovered intact after a 2½-month-long search.


  • Thule Air Base (formerly Pituffik), Greenland
    Sunday Jan 21, 1968

    1968 Thule Air Base B-52 crash

    Thule Air Base (formerly Pituffik), Greenland
    Sunday Jan 21, 1968

    January 21, 1968: the 1968 Thule Air Base B-52 crash involved a United States Air Force (USAF) B-52 bomber. The aircraft was carrying four hydrogen bombs when a cabin fire forced the crew to abandon the aircraft. Six crew members ejected safely, but one who did not have an ejection seat was killed while trying to bail out. The bomber crashed onto sea ice in Greenland, causing the nuclear payload to rupture and disperse, which resulted in widespread radioactive contamination.


  • Damascus, Arkansas, U.S.
    Thursday Sep 18, 1980

    The Damascus Accident

    Damascus, Arkansas, U.S.
    Thursday Sep 18, 1980

    September 18–19, 1980: the Damascus Accident, occurred in Damascus, Arkansas, where a Titan missile equipped with a nuclear warhead exploded. The accident was caused by a maintenance man who dropped a socket from a socket wrench down an 80-foot (24 m) shaft, puncturing a fuel tank on the rocket. Leaking fuel resulted in a hypergolic fuel explosion, jettisoning the W-53 warhead beyond the launch site.


  • Chernobyl, Ukraine, Soviet Union (Now Ukraine)
    Saturday Apr 26, 1986

    Chernobyl disaster

    Chernobyl, Ukraine, Soviet Union (Now Ukraine)
    Saturday Apr 26, 1986

    The Chernobyl disaster was a nuclear accident that occurred on 26 April 1986 at the No. 4 nuclear reactor in the Chernobyl Nuclear Power Plant, near the city of Pripyat in the north of the Ukrainian SSR. It is considered the worst nuclear disaster in history and is one of only two nuclear energy disasters rated at seven—the maximum severity—on the International Nuclear Event Scale, the other being the 2011 Fukushima Daiichi nuclear disaster in Japan.


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