Chernobyl disaster

1986 nuclear accident in the Soviet Union

On 26 April 1986, reactor 4 of the Chernobyl Nuclear Power Plant, located near Pripyat in the Ukrainian SSR of the Soviet Union, exploded. The accident resulted in dozens of direct deaths and a major release of radioactive material into the environment, causing widespread health effects and requiring the establishment of the Chernobyl exclusion zone. The response involved more than 500,000 personnel and cost an estimated 18 billion rubles (about $85 billion in 2026).

From Wikipedia, under CC BY-SA. More on occurri.