The Worst Nuclear Disasters

The accident in the Siberian city of Tomsk took place after a tank exploded while being cleaned with nitric acid.
Keerle Georges De / Sygma / Corbis

Tomsk-7 Explosion, April 6. 1993
The accident in the Siberian city of Tomsk took place after a tank exploded while being cleaned with nitric acid. The explosion released a cloud of radioactive gas drifting from the Tomsk-7 Reprocessing Complex.

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