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ore with traces of heavy metals lie in wait (106 อ่าน)
14 เม.ย 2565 17:25
Above ground, meanwhile, tailings ponds and piles of low-grade ore with traces of heavy metals lie in wait. "All of this material is exposed to water and oxygen," says Lèbre. Exposing such elements to, well, the elements, wreaks havoc on ecosystems, soils and water supplies through acid leaching. "A mine that is abandoned can have chronic pollution for hundreds if not thousands of years," says Lèbre.
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