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acres Address Alaska American Annual Ariz Arizona assaying average Black Bldg bonds Boston Butte CALIFORNIA carrying City claims Colo Colorado compressor concentrates Cons Consolidated containing Copper Co Copper Mining cost COUNTY Creek deposit depth Development directors district Dividends drifts electric engine Equipment estimated fissure furnace Globe Gold Mining Hill hoist Idaho Idle includes iron issued July June Lake Lands lead lease metal Mexico Michigan miles mill mineral Mining Co Mont Mountain Nevada North occurs Officers opened operations orebody oxidized patented plant pres Production Property quartz reported rock sec.-treas shaft shares $1 shipped silver smelter Smelting sold South Succeeded sulphide supt tons treas tunnel United Utah values vein VIII Wash wide York zinc
Page 115 - Leadville — Arkansas Valley plant, American Smelting & Refining Co. Pueblo — Pueblo plant, American Smelting & Refining Co. Salida— The Ohio & Colorado Smelting & Refining Co. Idaho: Clayton— Red Bird Smelting Co.
Page 179 - AMERICAN ZINC OF, ILLINOIS— AMERICAN ZINC ORE 261 new orebodies, with the purpose of keeping 5 to 10 years' production in sight. The low grade of concentrates in the Wisconsin district necessitates treatment by means of partial roast and magnetic separation. The company has a plant for this purpose, equipped with a 7-hearth roaster of the Skinner type near the Champion property. This plant has 200 tons daily capacity, producing a finished concentrate assaying 58 to 60% zinc. American Zinc Co. of...
Page 230 - Pelton wheel, taking water from Beaver creek and actuating a 6-kw generator, and a 16" Pelton wheel taking water under a 330...
Page 199 - Silver 1916 37,789,310 1,310 471,867 1915 1 22,889,885 599 331.836 1914 29,591,658 1,006 435,482 1913 36,598,132 .... The Moctezuma is one of the world's really great copper mines and the management is of the best. BUNKER HILL MINES CO. Mine office: Tombstone, Ariz. Officer: Dr. E. Grebe, supt. Inc. to take over and operate the property of the old Tombstone Cons. Mines Co. at Tombstone, discovered in 1878 and at one time one of the largest producers of gold-silver-lead ore in the Southwest. At a...
Page 792 - A crystalline, usually micaceous rock of foliated structure, made up of superimposed flattened particles. Scoria. Slags from copper smelters: volcanic ash. Scoriaceous. Of the nature of scoria. Scram. To search for ore in a mine that is apparently worked out and to extract it. Screen. A grating of perforated metal or woven wire. Seam. A thin layer of rock or ore. Secondary Enrichment. An enrichment of a vein or an orebody by material of later origin, often derived from the oxidation of decomposed...
Page 191 - SE, where it is reached at 1,400' below the Czar collar, in its farthest extension at present -developed on Copper Queen ground. There is one major extension from the NW end of the zone toward the west along the Czar fault, and others of minor importance. Individual orebodies are scattered through the zone in an eccentric manner, only matched by their own irregularities of form and size. Their most general characteristics are the softness of the ore and their great horizontal rather than vertical...
Page 154 - Casting — Copper usually analyzing from 99.50 to 99.75% made from ore and scrap. Used for casting purposes. Best Selected — British copper averaging 99.75% fine. Largely used in the British brass trades. Tough — British copper largely used for casting, rolling, drawing. Runs about 99.25%. Chile Bars — Copper smelted in Chile, running 95 to 99% pure and in some cases carrying bullion. Standard — Electro or HC fire-refined, running from 99.70% upwards, dealt in on London Metal Exchange and...
Page 792 - ... forcing or sucking air into or out of a mine. Fathom. Six feet. In sloping, a fathom is a cube of six feet. Fault. Dislocation of a vein or of a rock stratum. Feeder. A branch or small vein joining a larger one. Ferruginous. Containing iron. Filling. The waste material used to fill up old stopes or chambers ; allowing a mine to fill with water.
Page 730 - CRUSHER USED IN ALL PARTS OF THE WORLD LARGE RECEIVING CAPACITY SPECIALLY DESIGNED AND CONSTRUCTED FOR HARDEST KIND OF WORK BACON'S CRUSHING ROLLS SEND FOR CATALOGUE EARLE C.