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Show fiUH IF IE mm HI Legislature Appropriates $15,000 for Research Study of Mining. Sinvinl to Tlio Trilmup. AVAS IIINMTOX, Dec. lO.-Ttie diivctor of the buro:m of mines in his annual report re-port made public today diseusne;! briefly the work of 1 1 to jiast year at tbo Moseow station of his bureau, sayiui;: "The Uabo le-islature in V.M established estab-lished a slate bureau of mines and j;eol-o:;y j;eol-o:;y in eot;ne-Uon with ttie seiiotil of mines at the Suae university at .Moseow and a I "'propria led ? lut'O for coopi-rai ive work with tiie Imreau of mines for the ensuing two vars. "l'urin.L; tiie year, investigations of the trealnieiit of eoniph'x h-ad-zme sulphide ores and copper-iron sulphide oivs with special reference to differential notation were made at Moseow. Work on antimony anti-mony ore included sulphidizins followed by flotation. "Hefore. experiments started, each ore was examined under the microscope to determine the relationship of the minerals. min-erals. This macroscopic, st mty included products from screen analyses of crushed ore in order to ascertain the size to which the ore should be crashed to liberate lib-erate most of tiie mechanically combined mineral particles. "Jn the work on differential flotation tests were made to determine the most suitable flotative agents or mixtures oils, chemicals, and other snhsta nees which would effect a separation of galena ga-lena from sphalerite or ehalcopyrite from pyrrhoti i e, in order to f i nd the amounts of specific flota t ive agents necessary for each ore, and the proper conditions for obtaining- maximum commercial recovery recov-ery of tiie valuable minerals. Kx perimems indicate that each ore ree.uires a somewhat some-what different mixture. "Iargo-seale flotation tests in the mills in tho Coeur d'Alene district are planned, including tests of the re.miiar flotation feed at one or more mills to see if it is not possible to improve the separation of the minerals. The clay deposits of Idaho and the utilization of the TVtnn l'asin eoa! deposits will alo be investigated. "The coop era i ive sta ft in eludes C A. Wright, metallurgical euginer in charge; .1. T. Norton, ore dress: a-: engineer, bureau bu-reau of mines; F. A. Thompson, dean, school of mines; J. H. Jonte, analyst, and J. O. rarme:ee, research fellow and assistant as-sistant metallurgist of the University of Idaho. |