Annual report of the State Mineralogist for the year ending ... . , north of Sierra City, inSections 8 and 9, in the same township. The property was located inthe year 1883, and its dimensions are six thousand feet in length on thevein by six hundred feet in width. The office of the company is at anelevation of six thousand two hundred feet above sea level, and thehighest workings of the mine are at an elevation of seven thousand twohundred feet above sea level. The shipping point for supplies is Moran,lying east thirty-three miles. Freight from San Francisco, via Moran,costs $28 per ton to th
Annual report of the State Mineralogist for the year ending ... . , north of Sierra City, inSections 8 and 9, in the same township. The property was located inthe year 1883, and its dimensions are six thousand feet in length on thevein by six hundred feet in width. The office of the company is at anelevation of six thousand two hundred feet above sea level, and thehighest workings of the mine are at an elevation of seven thousand twohundred feet above sea level. The shipping point for supplies is Moran,lying east thirty-three miles. Freight from San Francisco, via Moran,costs $28 per ton to the mine. The vein courses 22 degrees north of west, and dips to the north withan average of 23 degrees to within four hundred feet of the lower work-ings, when it assumes a dip of about 60 degrees, and averages in widthsix feet. The mine has been opened by a series of four tunnels. No. 1tunnel has been driven on the vein one thousand three hundred feet inlength, and runs directly through the top of the mountain. No. 2 tunnel 644 REPORT OF THE STATE SIERRA COUNTY. 645 [s a crosscut tunnel until the vein is reached, when it continues on it west|,wo thousand two hundred feet in length. It is three hundred and sixfeet below No. 1. No. 3 tunnel is also a crosscut tunnel, and after cutting;he vein it runs on the vein one thousand seven hundred feet, and isjive hundred and seventy-five feet below No. 2. No. 4 tunnel is a cross-out also, and at present one thousand nine hundred and fifty feet [t is estimated by survey that it will have to be continued to a lengthJ}f two thousand five hundred feet before the vein will be reached in ; and by this tunnel a depth of one thousand five hundred feet willIbe attained. From the surface a shaft was sunk near the apex of themountain, one hundred and thirty feet in depth, striking No. 1 tunnelthree hundred and seventy feet from its mouth. From the different tunnel levels upraises have been made to thisshaft, which now, with
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Keywords: ., bookcentury1800, booksubjectgeology, booksubjectminesandmineralr
