The refuse of from stamping and crushing mills.

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1860.  [Their] labors are confined to washing by a more careful method the “tailings” or refuse discharged from the end of the sluices, often with a success which leads one to doubt the efficacy of the original process.—W. V. Wells, ‘How We Get Gold in California,’ Harper’s Mag., xx. 616 (April) (Bartlett).

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