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23 July, 10:32

What type of mining is used for both coltan and gold?

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  1. 23 July, 14:03
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    Open pit mining

    Open-pit mining is a process by which a cut is made on the surface of the earth to form an open pit from which rocks and minerals (such as gold and coltan) can be extracted. Open pit mining has the advantages of being economical and less risky for miners since they are not subject to toxic fumes or working in caves.
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