358 MmiNG IXDIJSTEY. 



invested ; it being represented that tlie assessments up to the time referred 

 to had reached but $7,000, while the dividends returned amounted to 

 $25,000. 



In consequence of the impoverishment and loss of the vein, as before 

 described, the product of the mine fell off in the summer of 1867. A verti- 

 cal shaft, located northeast of the croppings and designed to strike the lode 

 in depth, was commenced, but all work was subsequently suspended. The 

 mine was idle in the summer of 1869. 



Manhattan Mine. — The Manhattan is one of the most important and 

 productive mines in the district. Its claim on the North Star vein is between 

 the Timoke and the Buel. It commenced operations on that ledge in 1863, 

 sinking an incline on the outcrop, which soon encountered a slide or fault, and 

 the work was transferred to a vertical shaft, located several hundred feet to 

 the northeast. This shaft, known as the "Manhattan," was sunk through the 

 hanging wall of the ledge, striking it at a depth of 183 feet, and passing 

 through it, was continued vertically, connections being made with the vein at 

 lower levels by cross-cuts from the shaft. 



The first level on the vein was made at the point where it was cut by the 

 shaft, 183 feet below the surface; the second at 229 feet, the cross-cut to the 

 vein being 87 feet long ; the third level was made at a depth of 300 feet, the 

 cross-cut to the lode being 327 feet long. Each of these levels was driven 

 on the vein for a length of several hundred feet, developing some large and 

 valuable bodies of ore. The most productive portion of the mine was found 

 by the first and second levels, westerly from the shaft. In these levels the 

 drift passed through not less than 100 feet of ore, which was stoped out from 

 the second level to a considerable distance above the first, yielding a large 

 amount of bullion with profit to the mine. The vein was less rich in the 

 third level. 



The development of the vein is carried on at greater depth by means of 

 another vertical shaft, known as the "Oregon," located further up the hill, or 

 to the northeast, and sunk vertically. This shaft was originally begun for the 

 purpose of working the Oregon ledge, another of the same system of north- 

 west and southeast veins, cropping out a little above the North Star. The 

 Oregon ledge was opened years ago by an incline and produced ore of a high 



