Preliminary Report Volume 8

Preliminary Report Volume 8

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 edition. Excerpt: ...the tunnel by 3400 feet of lead-armored cable, and again stepped VVdown to 440 volts for use in hoisting and pumping. There is also an air pipe line from the Crescent, and two air receivers, one in the tunnel and one on the 150-foot level, and pumps on each level. The mine yields about 120 gallons of water a minute. Jamison mine. L. and J. N. Sobrero, S. Danelli and H. Hodgkins have been working this mine near J ohnsville under lease since November, 1919, when the owning company quit. Fifteen stamps have been running two shifts a day. Ten men besides the lessees were employed in July, 1921. Madra Mines Company 625 Market street. San Francisco. D. W. Shanks, presidentV During the summer of 1921 this company took options on the Arcadian, Pennsylvania, New York and otherclaims in the Greenville district. At the end of October, the Arcadian and Pennsylvania tunnels had been retimbered and a compressor and engine put in at the Arcadian. Six men were employed. Plumas Eureka mine at J ohnsville was reopened since the last report and 20 stamps were put in operation early in June, 1921. According to Chas. DV Stark, J r., superintendent, late Work has developed an area of 67,500 square feet of stoping ground on the Mohawk flat vein which shows an average width of four to seven feet. This vein is opened through a raise 534 feet long from the Eureka Tunnel. Ore is said to run $8 to $9 a ton and to contain 3% per cent of sulphides, principally pyrite and galena, and worth $68 a ton. This is the most extensively worked gold quartz mine in Plumas County. Plumas Eureka Annex Company is a Reno, Nevada, stock company which has been doing some work on four claims on the west side of Mount Washington, southwest of the Plumas Eureka mine. When visited at more

Product details

  • Paperback
  • 189 x 246 x 2mm | 82g
  • United States
  • English
  • black & white illustrations
  • 1236875583
  • 9781236875587