Pollution in China: thallium leak in Yangtze River linked to zinc smelter

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Authorities in northwest China have ordered the suspension of a zinc smelting facility after it was linked to a toxic chemical leak into the Yangtze River.The alarm was raised when environmental officials in Hanzhong, a downstream city in Shaanxi province, recorded unsafe levels of thallium in a reservoir fed by a tributary of the Yangtze.Following an investigation, Chengzhou Zinc Smelter in Cheng county, Gansu province was identified as the likely culprit, according to a statement released by…

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