Journal of electricity, power, and gas . 4 in. nozzle, andis of standard California construction. The hydraulic elevator lifts the gravel a verticalheight of 33 ft., and discharges it into a long line ofelevated sluices, where the gold is caught in riffles andundercurrents and whence the water runs into a set-tling basin. The elevator has a 9 in. throat and 3yiin. nozzle, and handles from 150 to 200 cu. yd. of. The Operators Point of View. dirt per hour. The sluices are 500 ft. long and have adrop of 7 ft. in 12 ft., from head to tail. Water for ope-ration, 400 miners inches, is originally obt
Journal of electricity, power, and gas . 4 in. nozzle, andis of standard California construction. The hydraulic elevator lifts the gravel a verticalheight of 33 ft., and discharges it into a long line ofelevated sluices, where the gold is caught in riffles andundercurrents and whence the water runs into a set-tling basin. The elevator has a 9 in. throat and 3yiin. nozzle, and handles from 150 to 200 cu. yd. of. The Operators Point of View. dirt per hour. The sluices are 500 ft. long and have adrop of 7 ft. in 12 ft., from head to tail. Water for ope-ration, 400 miners inches, is originally obtained froma small reservoir constructed by damming the ravine,and after operation has been started most of the wateris obtained from a settling basin into which the ma-terial is dumped at the end of the sluices. The waterfrom the settling basin is thinned at the pump bymeans of a small stream continually running from thereservoir, the proportion being about one part of freshwater to four parts of settled water. Electric power is obtained from the Great West-ern Power Company, who installed two 250 trans-formers, which step the current down to 2200 is supplied at the minimum rate of $400 permonth, with the right to cease operations during July,August and September in case water fails. With theplant operating continuously day and night the maxi-mum cost of current is $1700 monthly. In o
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