Soon, the mill began operations, swallowing scrap metal and then spitting out steel and smog.

很快，工厂开始运作，通过加工废金属生产钢铁，同时产生烟雾。

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Paper, when collected as scrap from newsprint to cardboard cartons, etc. , is baled and shipped back to a recycling paper mill.

纸，作为碎片从新闻用纸到纸板纸箱等收集来，打包后运输到再生纸造纸厂。

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But cars are too bulky to ship as scrap to a steel mill.

但是汽车太大，不可能象碎铁片那样被运到钢铁厂。

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An even lower-cost group of domestic producers are the mini-mill operators, such as Nucor, which make steel from scrap metal instead of iron ore.

ECONOMIST: Steel: Rust never sleeps | The