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