Hydraulic mining - washing down the bank into the sluice.
Hydraulic Mining - washing down the bank into the sluice.
Hydraulic mining - behind the pipes.
Hydraulic mining - behind the pipes.
Hydraulic mining - The Palm claim, Timbuctoo, Yuba County.
Hydraulic mining - The Palm claim, Timbuctoo, Yuba County.
Hydraulic mining - The gate, Yuba County.
Hydraulic Mining, Gold Run C.P.R.R. Cal.
Hydraulic Gold Mining, California.
Pipes that supply the water for hydraulic mining.
Gold Bearing Pyramid, California.
Hydraulic mining in California.
