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  3. the copper mining process from underground and open pits

the copper mining process from underground and open pits

Open pit miningis a technique used to extractcopperore near the earth's surface.Open pit miningis the most widely used technique ofmining coppertoday. It is accomplished by creating and using benches or terraces to gradually reach deeper under the earth's surface.Underground miningis used when thecopperore is not near the earth's surface.

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