United States Congressional Serial Set Volume 4351 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 Excerpt: ...hoist; rope speed, 600 feet per minute. One 30 and a 1 horsepower constant-speed motor, respectively, driving saws and a fan in the blacksmith shop. Works fully lighted throughout with arc and incandescent lamps. Taylor's Mill, Silver City.--Huntington crusher, 35 tons daily capacity. One 50-horsepower constant-speed motor. Mill electrically lighted. Jackson's Mill, Silver City.--Ten stamps, old style; 25 tons daily capacity; 30-horsepower constant-speed motor. Fitted to work both ore and mill tailings by cyanide process. Virginia City, Gold Hill, and Silver City.--All three lighted from Floriston circuit. Telephone circuit from substation at Virginia to the Gould & Curry Mill, Yellow Jacket and Belcher mines; also connects with power house at Floriston. RELATIVE COST OF ELECTRIC AND STEAM POWER. The cost of power furnished as per contract with the Truckee River General Electric Company is $7 per horsepower, based upon a continuous service and a two-minute peak load. In cases of such continuous service this shows an actual saving of 200 per cent. That is, the former rate for steam power was never less than $21 per horsepower. By way of illustration, the Consolidated California and Virginia air compressor is using 96 horsepower, at $7, amounting to $672 per month; former cost was about $1,700 per month. The Yellow Jacket air compressor is using 80 horsepower, at $7, amounting to $560 per month; former cost for the same service was $1,500 per month. These former costs were for wood and water to generate steam, cost of repairs to boilers, etc. It will be seen, therefore, that while the mining companies are paying for 1,000 horsepower, the cost upon this basis is much less than the mines could be run for by steam. When the pumping is done by electric power ...