Three years of research at an coal mine in, Illinois, have resulted in findings that scientists believe can help thousands of mine disposal sites that scar the coal-rich regions of the United States.

在伊利诺州Angonne市的一个煤矿的三年研究取得了成果，科学家们相信这些成果可以帮助改造把美国产煤区弄得伤痕累累的数千个旧煤场。

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The existing problems of the tailings and waste residue in Yunnan Lancang Lead Mine have been described, and the feasible disposal methods have been introduced.

阐述了云南澜沧铅矿尾矿和废渣存在的一些问题，提出了切实可行的处理办法。

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This material forms a thick, weighty and highly abrasive sludge that must be transported from the flotation cells, where the copper is extracted, to a mine tailings disposal area.

这种物质会形成浓厚的、沉重的、具有很强研磨性的污泥，这种污泥需要从萃取铜的浮选槽中传输出来，然后输送到矿尾的处置区域。

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During his military career, Mr Smith worked all over the world and was involved in mine clearance, bomb disposal, body recovery and anti-piracy work.

BBC: Diver John Smith