Engineering & Mining Journal

MAR 2016

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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October 16, 1886—Governor Hauser, in a report to the Secretary of the Interior, makes an excellent showing of Montana's progress in mining and other industries during the year past…. There is every reason to believe that the products of our mines will steadily increase from year to year until Montana stands reli- ably foremost among the States and terri- tories as a producer of the precious metals. The Alice mine has erected fine new hoisting works at an expense of $12,000. A new steam stamp has been added to the Anaconda works, with a capacity in operation of 250 tons of ore a day. The ore- crushers, which have been stationed next to the ore-bins, have been taken down and out, and will be used in another place. The old concentrator building has been changed materially. The company is at present rebuilding the chutes at the St. Lawrence mine as well as the Anaconda. Large amounts of lumber are daily hauled to the mine for that purpose. The Blue Bird mill goes steadily on at a cost of $250,000. The company has also erected hoisting-works at an expense of $40,000. …a very rich but singular discovery bas been made in the Lexington [mine]. It has always been a silver mine. For ten years, it has been a producer of silver ore. On the 800-foot level, where prospecting has been active of late, and where a chute of the usual character of ore was expected, a body of distinctively copper ore has recently been struck. The size of the strike has not yet been developed. The ore is a pyrites of a bright and beautiful color, and assays from 25 to 30 per cent copper and about 80 ounces in silver. Of course, it can only be treated by smelting: The discovery dispels the idea that copper may not abound at great depth under all the silver mines in the vicinity of Walkerville. The freak of the Lexington is as interesting as it is important. The Automatic Air Compressor September 4, 1886—Mine operations and tunnel-boring are not usually accomplished by the aid of automatic machinery, owing to the peculiarity of the work and crude appli- ances presented. Operators and contractors have not taken kindly to machinery that very soon proves to be more expensive than the MARCH 2016 ¥ E&MJ; 63 www.e-mj.com E & M J 1 5 0 Y E A R S The Automatic Air Compressor (September 4, 1886) Get connected HOW CAN YOU PROTECT YOUR ASSETS? Æ www.rema-tiptop.com MONITOR // MAINTAIN // MANAGE ANSWERS AT BAUMA 2016 April 11- 17 in hall b2, booth 437

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