Buffalo Paper - Note on the Cost of Tunneling at the Melones Mine, Calaveras Co., Cal.

The American Institute of Mining, Metallurgical, and Petroleum Engineers
W. C. Ralston
Organization:
The American Institute of Mining, Metallurgical, and Petroleum Engineers
Pages:
7
File Size:
266 KB
Publication Date:
Jan 1, 1899

Abstract

This note will give the cost of driving an adit at the Melones mine, in 1898, and, for purposes of comparison, the cost of similar work, in 1888, at the Hogsback mine, Placer county, Cal. The property of the Melones Consolidated Mining Company is situated on the Mother Lode of California, on Carson Hill, near Robinson's Ferry, and adjoins on the south the famous Morgan mine. The Mother Lode of California extends for a distance of over 100 miles in length through several counties, with a general strike of northwest and southeast. Three veins (commonly called the east vein, middle vein and west vein) comprise the " lode " in this section. The Melones property is situated upon the east and middle vein, and includes 1407 feet on the east vein and 5166 feet upon the middle vein. A shaft had been sunk on the Reserve mine, which is on the east rein, and within 230 feet of the Morgan mine. At the bottom of this shaft drifts and cross-cuts had been run and a large body of ore developed. It was deemed advisable by the Melones Mining Co., which holds this property under bond from the Melones Consolidated Mining Co., to run a tunnel and develop this body of ore at a greater depth. An option was obtained upon the South Carolina mine, which adjoins the property on the south, and is on the same east vein, upon which a tunnel had been run a distance of 1080 feet. This tunnel was cleaned out and continued to a point within forty feet of the Morgan mine. It passes directly under the Reserve shaft, 425 feet below the 200-foot level. The additional length of tunnel to be run was 1923 feet, and
Citation

APA: W. C. Ralston  (1899)  Buffalo Paper - Note on the Cost of Tunneling at the Melones Mine, Calaveras Co., Cal.

MLA: W. C. Ralston Buffalo Paper - Note on the Cost of Tunneling at the Melones Mine, Calaveras Co., Cal.. The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1899.

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