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Leonid Toptunov
Soviet senior nuclear engineer (1960–1986)
Leonid Toptunov
Leonid Fedorovych Toptunov (Ukrainian: Леонід Федорович Топтунов, Russian: Леонид Фёдорович Топтунов; 16 August 1960 – 14 May 1986) was a Soviet nuclear engineer who was the senior reactor control chief engineer at the Chernobyl Nuclear Power Plant Reactor Unit 4 on the night of the Chernobyl disaster, 26 April 1986.
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