OENTEAL Am) EASTERN NEVADA. 385 



Four levels have been driven from the shaft, the extent of which may 

 be readily seen in the section ; the character of the ground passed through 

 is also partly indicated, the shaded portions representing the stopes. It w^iU 

 be seen that the vein in the northern part of the work is cut off by a fault,/,/ 

 This is occasioned by a cross-vein, or slide, having a nearly east and west 

 course, and dipping north at an angle of about 50°. This slide is encoun- 

 tered in the 10-fathom level at a distance of 310 feet, and in the 20-fathom 

 level 340 feet north of the incline ; the distance between the incline and the 

 shde thus gaining on each successive level in depth. On the 10-fathom level 

 the vein is cut off abruptly by the slide, beyond which a wide belt of soft, 

 clayey, altered rock was cut through. A small seam, having the general 

 course of the main vein, was followed for about 100 feet and a cross-cut driven 

 from that point east, but without satisfactory result. Attempts have also been 

 made on the same level to find the vein in the western counlry-rock, and were 

 in progress in the summer of 1868, but had not reached anything definite when 

 the operations of the mine were suspended, for reasons mentioned below. 



The distribution of ore in the vein is shown by these developments to be 

 variable, rich courses of ore alternating with ground, if not barren, at least too 

 poor to pay at present rates. The richest portion of the mine was between 

 the third and fourth levels, directly under the slide. Immediately above the 

 third level the ground for its entire length was rich enough to stope, but 

 courses or chimneys of ore, richer than the surrounding portions, were per- 

 ceptible. These courses have a northerly dip, and extend for 100 feet or more 

 in horizontal measurement. The most remarkable was that just under and 

 dipping with the slide, where the vein was very large and rich, the pay-seam 

 in places filling the entire width of the vein, about 8 feet, and carrying ore of 

 a very high grade. Two others, of less importance, occurred further south, 

 one near the incline and one about 100 to 150 feet north of it ; both being in 

 the neighborhood of, and coinciding in direction with, the so-called "floors'' in 

 the vein, or cross-seams, traversing the vein distinctly, but not occasioning any 

 fault or displacement. The general direction and location of these "floors," as 

 indicated by Mr. Richards, captain of the mine, are shown in the section by 

 the lines s s. 



The costs of working the mine, the details of which are given further on, 

 49 



