The copper era., 1910-10-21
Arizona Mining News.
tMining world.)
Prescott.

unuer operation the mlnlng pIdnS call for deep development.
 The Lincoln mine, one of the old time producers of the district, is to be operated again on an extensive scale. Preparations are now being made to resume work at an early date. A permanent camp has been established on the ground and a small force of hien engaged to do preliminary work.
 Work at the mines of the Tiger Gold company, at Har- in gton in the same district, is going steadily on un- derground with the mill running at intervals. A new shaft is being sunk near the mouth of the main tunnel. From the shaft drifting will be done to tap virgin ground to the north.
 The Superior-Ne mining com pany, working the Mascot group, is one of the new operators in the dis trict The showing is favorable and , it is proposed to build a mill in a few months when production will be heavier. The company is building wagon road from the railroad to the camp. New machinery will be in- stalled when the road is finished.
 Work ou the Wildhoyer group, in the same district, is being pushed at the 500-foot level In a winze sunk from this point and also in a raise the vein is strong and values good.
 At the Old Tigre mine work is con- fined to drifting and stoping. It is said the mine will soon be shipping ore again.
 The Pacific Copper mining com pany has finished wagon road from Harrington to its camp and will be- gin installing new machinery, the first to be taken to the ground by wagon. With the new machinery in operation the main shaft will be sunk to depth of 1000 feet.
 Two other properties that have re- sumed operations in the Bradshaw district recently are the Gladiator War Eagle and the Towers group. The GladiatorWar Eagle is an old producer with a very good record. l The Towers is a newer group of mines, but has favorable showing
 From OO0.pound test run of ores from the Big Butte mine recently the results were so encouraging that it has been decided to enlarge and improve the plant at that property | located in the Walnut Grove district Among the improvements will be cyanide plant. The run was made on ore taken from a shaft of limited depth and in which there was a A. foot vein running high iu gold There is practically no silver in the ore and very little lead. In both shaft and tunnel work on the prop erty there is total of but 2JO feet. The group consists of four claims covering a system of veins and dikes that can be traced on the surface for 25O0 feet.
 The tunnel at the Monte Carlo mine in the Silver mountain district is in 16O feet. It will be driven 600 feet farther to connect with the shaft Only a small force is at work in the mine as the mill has been shut down on account of lack of water. The ore bodies are changing to sul- phide formation.
 Phoenix.
 At many points in the Columbia district Yavapai county, mining activity is under way with gratifying results. At the Uncle Sam mine sys tematic development is maintained with force of men, and the showing is good. Many other discoveries are also being worked.
 The survey corps of the territorial road has completed its work estab- fishing permanent route that runs to within one and a half miles of Columbia. This movement is regard ed of great importance to the ca mp, it is to be built next year.
 Kingman.
 In the Tub mine, owned by MT. Boyle, development work has been stopped for the present. With a 40- foot width ot fine milling ore, taous- ands of tons Of which is already blocked out. Mr. Boyle has stopped further work pending the erection of a large mill tor the treatment nf the Tube ore alone. Although the Tub and Golconda are adjoining mines, their ores are quite different in char acter. Golconda ore is a simple com bination of lead and zinc sulphides, while the Tub ore is rich Tn copper pyrites, however, carries better sil- yer and gold values than the Col conda ore, so that in the end it is just as valuable.-~
 Walker.
 The Black Diamond mine in the Walker district has entered the pro- ducing class. It has an abundance of ore.
 Another attractive property is the Griffin mine, adjoining the North Capital. The yield is a good grade of gold ore which is being treated at the Poland mill.
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