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  1. en.wikipedia.org › wiki › MetalMetal - Wikipedia

    17 hours ago · Between 1932 and 1999, copper in use in the U.S. rose from 73 g to 238 g per person. Metals are inherently recyclable, so in principle, can be used over and over again, minimizing these negative environmental impacts and saving energy. For example, 95% of the energy used to make aluminum from bauxite ore is saved by using recycled material.

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