Archaeology students examine Khirbat en Nahas, an ancient copper-smelting center south of the Dead Sea.

考古专业的学生们正在检查克巴特·恩-纳哈斯遗址，这里是位于死海以南的一处古老铜冶炼中心。

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Below, a photo of a woman recycling a piece of imported American scrap metal inside of an industrial-scale motor scrap recycling (and copper smelting) operation south of Shanghai.

下面是一个妇女的照片，她正在一家上海南部的工业汽车废物回收(和金属熔化)厂回收一件美国进口的废金属。

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This article presents the requirement of automatic control for the production process of a copper smelting furnace and the application of DCS to process.

本文介绍铜冶炼鼓风炉生产过程的自动控制要求以及小型集散控制系统在该过程的应用情况。

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Dioxin, though, is usually formed as a byproduct in processes such as copper smelting, paper-production and the making of pesticides and chlorine-containing organic chemicals.

CNN: THE GREAT DIOXIN SCARE

They want to provide a series of incentives to mine owners and firms which make gold as a by-product of smelting copper ore.

BBC: Golden opportunity for old Indian mines