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MINING INDUSTRY. 



ground opened and available for stoping than is usually found in the produc- 

 ing mines of the district. The vein, where passed through by the shafts, had 

 been found generally small, but the levels driven in either direction from the 

 shaft had cut good bodies of ore. In the first level, 150 feet below the sur- 

 face, east of the eastern shaft, where the vein was standing, there was a seam 

 of solid ore, consisting of iron and copper pyrites ; this was near the north 

 wall, and separated from it by a gouge or selvage of soft clay, some six inches 

 thick. Between the seam of pyrites and the south wall, the vein, 4 or 5 feet 

 thick, was filled with good milling ore, consisting of siliceous, feldspathic 

 matter, thickly impregnated with pyrites. This character of pay-ground was 

 continuous to the end of the drift, some 60 or 70 feet in length. In the 

 lower levels, in the eastern portion of the mine, the vein was smaller, and 

 had the appearance of being somewhat disturbed. West of the shafts the 

 ground has been worked up to the line of the adjoining company, and, as is 

 claimed by the latter, beyond the line, which has caused some litigation. In 

 the bottom the vein maintains its average width, carrying two seams of com- 

 pact ore, a foot apart, and 18 inches wide in the aggregate, the space between 

 being filled with good milling ore. The ore of this vein carries a much larger 

 proportion of galena and zincblende than either the Gregory or the Bobtail, 

 though the predominating mineral is the iron and copper pyrites, and chiefly 

 the former. The main shaft of this mine is being carried down in a work- 

 lanlike manner, substantially timbered with square sets, generally similar to 

 that described in the Consolidated Gregory. The machinery on the surface 

 is a small portable engine, having a 6-inch cylinder, used for hoisting ; the 

 winding apparatus consisting of the drum operated by belting and controlled 

 by brake, in the manner common in this region. The company have a 20- 

 stamp mill in Chase Gulch, about a half mile from the mine, in which the 

 lower-grade rock, or that of second quality, is crushed and subjected to the 

 common process, while the higher grade, or first-class ore, is selected for 

 treatment by other methods. This is said to contain about 5 or 6 ounces of 

 fine gold and 20 ounces of silver to the ton, worth from $120 to $140, in 

 coin. Concerning the yield of the rock, or detailed costs of operations, but 

 little definite information was found available. The low-grade ore is said to 

 yield, in the ordinary stamping process, from 4 to 12, averaging probably 5 



