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Techa River
The Techa River is a river on the eastern flank of the southern Ural Mountains noted for its nuclear contamination. It is about long, and its basin covers . It begins at the formerly secret nuclear-processing town of Ozyorsk, Chelyabinsk Oblast about northwest of Chelyabinsk and flows northeast to Dalmatovo on the Iset River, a tributary of the Tobol River. Its basin is enclosed on the southeast by that of the Miass River, another river that flows northeast into the Iset.
==Water pollution==
From 1949 to 1956 the Mayak complex〔(Techa River ) 〕 dumped an estimated of radioactive waste water into the Techa River,〔(CHELYABINSK "The Most Contaminated Spot on the Planet" - a documentary film by Slawomir Grunberg - Log In Productions - distributed by LogTV LTD )〕 a cumulative dispersal of of radioactivity.
As many as forty villages, with a combined population of about 28,000 residents, lined the river at the time.〔(Radioactive Contamination of the Techa River and its Effects )〕 For 24 of them, the Techa was a major source of water; 23 of them were eventually evacuated.〔 〕 In the past 45 years, about half a million people in the region have been irradiated in one or more of the incidents,〔 exposing them to as much as 20 times the radiation suffered by the Chernobyl disaster victims.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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