170 MINING INDUSTEY. 



The entire work being, thus far, in the country-rock, no developments of ore- 

 bodies have been made or looked for. 



Gould and Cuery. — This mine is one of the oldest locations on the lode, 

 and has become widely known as one of the most productive. The company 

 was organized in 1860. The nominal claim and basis of organization was 1,200 

 feet, but the measured length of ground, between the northern and south- 

 ern boundaries, is only 921 feet. The productive ground of the Gould and 

 Curry has thus far been confined to the southern part of the claim. The 

 body of ore cropped out at the surface, some 300 or 400 feet from the south- 

 ern boundary, and, dipping southerly, passed beyond the boundary into the 

 Savage claim. From within these limits, about 400 feet in length, 500 feet 

 in height, and an aggregate width of 80 or 100 feet, the Gould and Curry 

 have extracted the whole of their large product. 



Mining operations were at first carried on by means of tunnels or adits, 

 driven in from the side of the hiU, at right angles to the course of the lode, 

 passing through the eastern country-rock, and cutting the ore-bodies in depth. 

 Three tunnels of this description were driven at diiferent depths, the lowest 

 being over 2,000 feet long, and cutting the lode at a depth of 425 feet. By 

 these means the greater part of the productive ground of the mine was 

 worked out. In 1864 the company commenced the sinking of their deep 

 shaft, through the eastern country-rock, partly for working the ore-ground 

 known to exist below the level of the lowest tunnel, but chiefly to explore 

 the mine at much greater depth. This shaft has already been described, and 

 the costs of sinking it have been shown, on a foregoing page. The work has 

 progressed steadily, with only few interruptions, until the present time. The 

 depth of the shaft, at the date of the company's last report, was 1,187 feet. 

 It is well timbered, as already described, and is in excellent condition. The 

 pumps in the shaft are 12 inches in diameter, and extend from the adit-level, 

 225 feet below the surface, to the bottom of the mine. The column of each 

 plunger pump is 200 feet high. The surface works at the shaft are amply 

 provided with all the appurtenances of a well-equipped mine. There are 

 four engines, two for hoisting and two for pumping, one of the latter being 

 held in reserve as a substitute, in case of accident to the other. The princi- 

 pal pumping engine is a Corliss, the cylinder of which is 18 inches in diam- 



