Related by context. Frequent words. (Click for all words.) 48 Chernobyl 41 Bulgakov 41 Chornobyl 40 Bellona 39 Andrei Tarkovsky 39 Mayak 39 Fyodor 39 Roald 38 Leonid 37 Nikonov 37 Mykhailo 36 Grigori 36 Gromov 36 Aleksandr Solzhenitsyn 36 Grigor 35 Academician 35 Nadezhda 35 Lake Baikal 35 Viacheslav 35 Rivne 35 Sobolev 35 Ponomarev 35 Leningrad 34 Rogov 34 Sergei 34 Komi Republic 34 Konstantin 34 Mikhail 34 Vilna 34 Siberia 34 Grigory 34 Pokrovsky 34 Radioactive 34 Russian Emergencies Ministry 33 Pripyat 33 Simonov 33 Yuri 33 ecological catastrophe 33 Tver region 33 Solovyov 33 Bryansk region 33 radiation poisoning 33 physicist 33 Vladimir 33 Bryansk 33 peat fires 33 Rumyantsev 33 Chernobyl catastrophe 33 Danilov 33 Oleg 32 radioactive substances 32 Tretyakov 32 Solzhenitsyn 32 Vassily 32 Andreyev 32 Lidice 32 Ryzhkov 32 Khojaly 32 Kherson 32 Ihor 31 Oleg Mitvol 31 Holodomor 31 Khakassia 31 Crimea 31 Radioactivity 31 Lubyanka 31 Chernobyl disaster 31 radioactive contamination 30 Lomonosov 30 radioactive fallout 30 Nuclear Reactors 30 Aral Sea 30 Tunguska 30 King Sejong 30 Lvov 30 Evgeny 30 Yevgeni 30 Kola Peninsula 30 Semipalatinsk 30 Kursk 30 Edwin Lyman 30 radioactive 30 Stalin purges 30 Greenpeace 30 radioactivity 30 holocaust 29 Nuclear Reactor 29 Japan stricken Fukushima 29 Rosenergoatom 29 Dimona reactor 29 Sakharov 29 Koodankulam 29 Emergency Situations Ministry 29 Rostekhnadzor 29 Evgeniy 29 Plutonium 29 Gomel 29 Hiroshima Nagasaki 29 Depleted Uranium 29 Lenin 29 David Lochbaum