when was hydraulic mining invented spelling

Hydraulic mining - Wikipedia

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 ...

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Giant Gold Machines - Hydraulic Mining An ancient northern California river once laid down an immense bed of gold-bearing gravel. There had to be an easy way of getting down to the ancient streambeds now buried in the mountains. There was: hydraulic ...

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