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The copper referred to in the Bible is not pure copper but an alloy of copper and tin. This alloy – bronze – was the most useful and important metal from the beginning of the third millennium B.C.E. to the 13 th century B.C.E. when it began to be replaced by iron.
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It requires mining companies to restore most surface-mined land so it can be used for the same purpose as before it was mined. It also levied a tax on mining companies to restore land that was disturbed by surface mining before the law was passed. Surface mined land can be expensive to restore and almost impossible in arid and semi-arid climates.
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