from The Century Dictionary.

  • noun A term used in various gold regions to denote that kind of mining which is carried on by following, by means of drifts or levels, the detrital material in the channels of former rivers, now obliterated and covered with volcanic and other accumulations.


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  • In drift-mining the rich gravel is covered by hard lava rock thrown up by some old volcanic outburst.

    Stories of California Ella M. Sexton


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