hydraulic mining so muddied the waters of the Sacramento that their numbers greatly decreased.
Deep mining may be divided into drifting and hydraulic mining.
hydraulic mining, quartz processes, and corporate effort succeed the earlier mining attempts.
The profits obtained in some cases of extensive deep diggings and hydraulic mining are very great.
Later dredges and hydraulic mining were resorted to with success.
It was a camp where hydraulic mining was being conducted on a large scale.
The party of spectators stood well out of the way, for the work of hydraulic mining has attached to it no little danger.
A derrick capable of moving heavy boulders, and driven by water power, is a necessity in all hydraulic mining.
This hydraulic mining seemed to be most in favor there, and the power developed by some of these streams was immense.
My attention was aroused to the fearful effects of hydraulic mining as we journeyed on ever upward.