CENTEAL AND EASTBEN NEVADA. 403 



In May, 927 tons of ore— 480 wet, 447 dry $48, 212 95 



In June— 11 days 29, 939 03 



168,397 25 

 Deducting, as product of custom work 8, 100 00 



Leaves, as product of Combination mine 160, 297 25 



In addition to which there were 2,000 tons (estimated) of second-quality rock 

 awaiting treatment by wet process, of which the assay value was said to average 

 $40 per ton. 



The above statement does not show accurately the yield and costs of 

 treatment of the two classes of ore, as the amalgam from both processes is 

 usually melted together, and the costs were kept without strict classification. 

 For the month of May we have, however, the following figures : 447 tons of 

 first-class ore gave an assay value of $91 10, yielding 88tV per cent., or 

 $80 31 per ton, aggregating $35,898 33 ; while 480 tons of second-class ore, 

 with an assay value of $37 70, yielded 682V per cent., or $25 62 per ton, 

 amounting to $12,314 62. The average yield of the whole amount of ore 

 worked in May was $52 per ton. The additional product of this mill during 

 the latter half of 1868 probably did not exceed $20,000, as it was standing 

 idle nearly all the time. The opening of the mine having been delayed by 

 the accidents to the hoisting and pumping machinery, already referred to, the 

 supply of ore speedily failed, and the mill, which, without this condition of 

 affairs, was built with too great capacity, was thrown out of employment. 



The Belmont mill is in the town of Belmont, a half mile or a mile from 

 the mine. It was built in 1866. It contains 10 stamps, weighing about 600 

 pounds each, and 6 pans, the machinery being driven by a small steam-engine. 

 The mill is only designed for treating ores in the wet, or Washoe process, and 

 was successful in working the surface ores of the vein, extracting from 50 to 

 60 per cent, of their value. According to Mr. Wright, the agent of the com- 

 pany, this mill has treated about 4,000 tons of ore, yielding, on an average, 

 $50 per ton. About one-half this product came from the northern part of 



