Reverse curve, Summerwell estate, sta. 3421. |
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Curve 16, sec. 7. |
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Boston water works, Sudbury River Conduit, 1876, Division 1, Section 1, conduit under Proctor + Albany railroad tracks. |
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Hydraulic mining - washing down the bank into the sluice. |
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Hydraulic Mining - washing down the bank into the sluice. |
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Hydraulic Mining, Cal. |
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Pipes that supply the water for hydraulic mining. |