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Bomvu Ridge 40,000 years ago may have been the first large-scale underground mine anywhere. Australia well populated 60,000 years ago?

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Advances in quarrying technology have eased the challenge of extracting natural stone from the earth.

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Mining is the extraction of valuable minerals or other ... identical to open-pit mining except that it refers to sand, stone and ... and technology improves ...

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DRIVAGE IN STONE (COAL MINES) A drift in coal mining terminology is a roadway in stone, and is driven for access to shallow seams, for...

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