The Mother Lode region of California . Af^F{)ENT OP- TTfvJQErRS - WlLD/V)A/s| Sh/\F-T. Fig. 23. 4^ X 4^ feet, and the pump and ladder compartments 4| x 5 feet. Thewall-plates and ends of dividers are so framed that the dividers aredriven up into place instead of down, which prevents their beingknocked out by blasts. 70 CALIFORNIA STATE MINING BUREAU. It is the intention to use skips that will carry 3 tons of ore at a load,making total weight of load (including cable and skip), starting at adepth of 2500 feet, about 6 tons. Foundations of stone and cement forpermanent headgear have been
The Mother Lode region of California . Af^F{)ENT OP- TTfvJQErRS - WlLD/V)A/s| Sh/\F-T. Fig. 23. 4^ X 4^ feet, and the pump and ladder compartments 4| x 5 feet. Thewall-plates and ends of dividers are so framed that the dividers aredriven up into place instead of down, which prevents their beingknocked out by blasts. 70 CALIFORNIA STATE MINING BUREAU. It is the intention to use skips that will carry 3 tons of ore at a load,making total weight of load (including cable and skip), starting at adepth of 2500 feet, about 6 tons. Foundations of stone and cement forpermanent headgear have been built from bedrock to the level of thecollar of the shaft. The temporary hoist and gallows frame now in use NlW a)T/Lt OP SdR&fcN Ff^AME-a+- WlLDMAN MlJ-Lwithout ii^side Fig. 24. at this shaft is so constructed and arranged that the permanent steelhead frame can be erected over the shaft without interfering with theprogress of work. The design of the proposed steel headgear is by EChodsko, of San Francisco. If erected this year it will be the first of itskind in California. THE MOTHER LODE REGION—AMADOR COUNTY. 71 The Wildman Mill.—The mills of the Wildman Company are operatedwith as great care as any in the State, and merit a detailed are two mills, each of 40 stamps. In the Wildman mill thestamps weigh 850 pounds; these drop from 7 to 9 inches 96 times perminute; the guides are of iron; the height of discharge is 7^ inches,regulated by chuck-blocks, having a difference of 4 to 2 inches in No. 2 punched tin screen is used. The capacity of the mill had beenabout 145 tons per day under the above conditions, but the height ofdischarge has been lowered not to exceed 6 inches for the purpose ofexperimentation. This will have
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectminesandmineralresou
