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It was difficult to find gold during the Gold Rush because after awhile most of the gold that was near the surface of the ground was found. In order to get the gold that was deeper in the soil, they had to invent something to help them dig deeper. For example, Hydraulic Mining used water jets to dig deeper in the ground. However, about 30 years after it was invented it was banned for destroying the surrounding land.

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15y ago

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