The Kyshtym disaster, sometimes referred to as the Mayak disaster or Ozyorsk disaster in newer sources, was a radioactive contamination accident that occurred on 29 September 1957 at Mayak, a plutonium reprocessing production plant for nuclear weapons located in the closed city of Chelyabinsk-40 in Chelyabinsk Oblast, Russia in the Soviet Union.
Image: Wikimedia Commons contributor, CC BY-SA 4.0 · Text from Wikipedia, CC BY-SA 4.0
Ozyorsk, Chelyabinsk OblastClosed city in Chelyabinsk Oblast, Russia
MayakNuclear reprocessing plant in Russia
Chelyabinsk OblastFirst-level administrative division of Russia
Russian Soviet Federative Socialist RepublicSoviet republic from 1917 to 1991
Soviet UnionCountry in Eurasia from 1922 to 1991
Pollution of Lake KarachayRadioactive contamination of Lake Karachay
Coordinated Universal TimePrimary time standard globally used to regulate clocks and time
Geographic coordinate systemSystem to specify locations on Earth
