| 41. | Hydraulic mining was used on ancient gold-bearing gravel beds on hillsides and bluffs in the gold fields.
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| 42. | Both placer and hydraulic mining was conducted.
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| 43. | Hydraulic mining ended when public outcry over the destruction of farmlands led to the outlawing of this practice.
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| 44. | It is the site of extensive gold rush hydraulic mining, with a dramatic and barren landscape still remaining.
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| 45. | The Sterlingville mine quickly became the largest hydraulic mine in Oregon, and possibly the entire western United States.
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| 46. | In 1898 the Last Chance Hydraulic Mining Company was formed to develop the placer by the same name.
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| 47. | It is named after the father of hydraulic mining and benefactor of the original Oakland Observatory, Anthony Chabot.
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| 48. | Hydraulic mining is utilized in forms of water jets to wash away either overburden or the ore itself.
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| 49. | Angry farmers eventually brought an end to hydraulic mining when they scored a victory in federal court in 1884.
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| 50. | Hydraulic mining, which was invented in the 1850s in the Bear River watershed, is believed to be the culprit.
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