Quarrying, Solution Mining, and Longwall Mining..this answer is
presented to you by Tim/ Memphis
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that they are mint :)
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underground minning, open pit minning, solution mining, strip
mining
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underground minning, open pit minning, solution mining, strip
mining
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The solution of the mining is in the underground of the rock is
the coal and in this world there are lots. The human help each
other to do it. That is the tention for human