Biology, asked by ApilGurung, 1 year ago

about underground method

Answers

Answered by deepshika1512
4
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Underground hard rock mining refers to variousunderground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds.

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