Accidentul nuclear din Urali ascuns timp de 30 de ani

A major nuclear accident in the Ural Mountains was kept secret for thirty years, involving a violent explosion that released massive radioactive materials. The incident occurred in 1957 at the Mayak nuclear complex, where a cooling system failure led to a catastrophic explosion. The radioactive cloud affected around 20,000 km², impacting nearly 270,000 residents who were unaware of the danger. The Soviet regime concealed the disaster, prohibiting medical professionals from mentioning radioactivity and erasing contaminated areas from maps. The event, rated level 6 on the INES scale, is the third worst nuclear disaster in history, revealed to the world in 1976 by dissident Zhores Medvedev, although the CIA had known since 1960. The lingering question is how many similar disasters remain hidden today.