<span>Hydraulic mining, or hydraulicking, is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. In the placer mining of gold or tin, the resulting water-sediment slurry is directed through sluice boxes to remove the gold. It is also used in mining kaolin and coal.</span>
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Answer: a recess appointment is an appointment by the President of a federal official when the U.S. Senate is in recess.
Explanation:
That slaves would take its jobs at lower wages is people in border states.
