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CHERNOBYL, UKRAINE : View of the Chernobyl Nuclear power after the explosion on April 26 1986 in Chernobyl:,Ukraine. (Photo by SHONE/GAMMA/Gamma-Rapho via Getty Images)

CHERNOBYL, UKRAINE : View of the Chernobyl Nuclear power after the explosion on April 26 1986 in Chernobyl:,Ukraine. (Photo by SHONE/GAMMA/Gamma-Rapho via Getty Images)

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Photo, dated 01 October 1986, showing repairs being carried out on the Chernobyl nuclear plant in the Ukraine, following a major explosion 26 April 1996 which, according to official statistics, affected 3,235,984 Ukrainians and sent radioactive clouds all over Europe. (Photo credit should read ZUFAROV/AFP via Getty Images)

Photo, dated 01 October 1986, showing repairs being carried out on the Chernobyl nuclear plant in the Ukraine, following a major explosion 26 April 1996 which, according to official statistics, affected 3,235,984 Ukrainians and sent radioactive clouds all over Europe. (Photo credit should read ZUFAROV/AFP via Getty Images)

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CHERNOBYL, UKRAINE- APRIL 29: View of the Chernobyl Nuclear power plant three days after the explosion on April 29, 1986 in Chernobyl:,Ukraine. (Photo by SHONE/GAMMA/Gamma-Rapho via Getty Images)

CHERNOBYL, UKRAINE- APRIL 29: View of the Chernobyl Nuclear power plant three days after the explosion on April 29, 1986 in Chernobyl:,Ukraine. (Photo by SHONE/GAMMA/Gamma-Rapho via Getty Images)

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CHERNOBYL, UKRAINE- APRIL 29: View of the Chernobyl Nuclear power plant three days after the explosion on April 29, 1986 in Chernobyl:,Ukraine. (Photo by SHONE/GAMMA/Gamma-Rapho via Getty Images)

CHERNOBYL, UKRAINE- APRIL 29: View of the Chernobyl Nuclear power plant three days after the explosion on April 29, 1986 in Chernobyl:,Ukraine. (Photo by SHONE/GAMMA/Gamma-Rapho via Getty Images)

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un agriculteur suédois portant une combinaison antiatomique déplace, en juin 1986, du fourrage contaminé par le nuage radioactif de Tchernobyl, quelques jours après l'explosion du réacteur No 4 de la centrale nucléaire ukrainienne, le plus grave accident nucléaire du XX siècle.A Swedish farmer wearing anti atomic clothes shifts fodder contemned by the radioactive cloud of Chernobyl in June 1986, a few days after the No. 4 reactor's blast, the world's worst nuclear accident of the 20th century. (Photo credit should read STF/AFP via Getty Images)

un agriculteur suédois portant une combinaison antiatomique déplace, en juin 1986, du fourrage contaminé par le nuage radioactif de Tchernobyl, quelques jours après l'explosion du réacteur No 4 de la centrale nucléaire ukrainienne, le plus grave accident nucléaire du XX siècle.A Swedish farmer wearing anti atomic clothes shifts fodder contemned by the radioactive cloud of Chernobyl in June 1986, a few days after the No. 4 reactor's blast, the world's worst nuclear accident of the 20th century. (Photo credit should read STF/AFP via Getty Images)