How they mine diamonds in Mirny, in the Siberian region of eastern Russia – During the 7 months of freezing winter, workers use jet engines to thaw and dig out the permafrost, or blast it with dynamite to get access. The Mir mine is 1,722 feet deep and 3,900 feet across.

How they mine diamonds in Mirny, in the Siberian region of eastern Russia – During the 7 months of freezing winter, workers use jet engines to thaw and dig out the permafrost, or blast it with dynamite to get…

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