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  • NIOSH
    IC 7559 Coal for Coke Production

    By Arno C. Fieldner

    Coal for coke production is fundamentally necessary for the manufacture of pig iron , and pig iron must be had for making steel - a vital element in our modern industrial economy . In both World Wars

    Mar 1, 1950

  • NIOSH
    IC 7558 Carbide Insert Bit Drilling at the ClevelandCliffs Iron Co. mines, Ishpeming, Mich

    By Walter E. Lewis

    This circular presents the method of making tests and apparent results of comparing performance of tungsten carbide insert bits and steel detachable bits by the Cleveland-Cliffs Iron Co. at the compan

    Mar 1, 1950

  • NIOSH
    IC 7549 Conditions and Practices at Coal Mines in the Ruhr District of Western Germany

    By R. W. Stahl, H. E. Sanford, J. B. Benson

    Immediately following the capitulation of Germany in World War II, the German State was occupied by various allied forces, who supervised all indus- trial activities in the area. Coal production is vi

    Feb 1, 1950

  • NIOSH
    IC 7546 Mines and Mineral Deposits (Except Fuels), Park County, Mont

    By Glenn C. Reed

    This report is one of a series based upon investigations made and being made within the Missouri River Basin in Montana by engineers of the Bureau of Mines , Albany Branch , Mining Division . These in

    Feb 1, 1950

  • NIOSH
    IC 7550 Economic Importance of Pegmatites

    By Paul M. Tyler

    According to Lindgren , the economic importance of pegmatites stems from the fact that they represent the principal natural storehouse of two classes of mineral products : (1 ) common minerals in exce

    Feb 1, 1950

  • NIOSH
    IC 7551 Report of Petroleum and Natural-Gas Branch, Fiscal Year 1949

    By R. A. Cattell

    Progress of Bureau of Mines research related to oil and gas during the past fiscal year has been marked by the publication of more than 40 reports on the various phases of the work . These include pap

    Feb 1, 1950

  • AIME
    Its Everyones Business

    APPLICATIONS for loan contracts for the exploration, development and mining of strategic and critical metals and minerals are now being accepted by the Department of the Interior. The RFC is authorize

    Jan 12, 1950

  • AIME
    The Influence of Certain Inorganic Salts on the Flotation of Lead Carbonate

    By Maurice Rey, Victor Formanek, Paul Chataignon

    IT is found when floating oxidized lead ores by sulphidization, that the presence of calcium salts in the water, is usually detrimental and lowers the recovery. This effect is particularly marked in d

    Jan 11, 1950

  • AIME
    British Mark a Century of Progress in Coal Mine Health and Safety

    By V. S. Swaminathan

    This year, Great Britain is looking back over a century to August 14, 1850, the day when the first "Act for the Inspection of Coal Mines" was passed in that country, an act which signaled the end of o

    Jan 11, 1950

  • AIME
    Its Everyones Business

    CHAIRMAN DOUGHTON of the House Ways and Means Committee announced on September 23 that the committee has scheduled public hearings on an excess-profits tax, beginning on November 15, 1950. In the mean

    Jan 11, 1950

  • AIME
    Sinking Tennessee Copper's Circular Shaft

    By L. Weaver

    THE Tennessee Copper Co.'s mines are in the southeast corner of the state of Tennessee. Polk Co., in the well-known Ducktown copper basin. Their new circular production shaft will eventually be t

    Jan 11, 1950

  • AIME
    Mining Engineering Editorial - Taking the Long View

    Taking the Long View THE present international situation has serious implications for this nation. The possibility of total war is no more appalling than the threat of making the United States perm

    Jan 10, 1950

  • AIME
    Open-Pit Forum - Drilling and Blasting Bagdad Copper

    By Olaf Hondrum

    CHURN drilling equipment at Bagdad consists of two Bucyrus Erie 27-T model drills and one 22-T drill with gasoline engines. The drilling tools weigh approximately 1600 lb. The holes are drilled with 7

    Jan 10, 1950

  • AIME
    Its Everyones Business

    REPUBLIC STEEL CORP. and Armco Steel Corp. have joined in a $160,000,000 project for the production of iron ore from Taconite in the Lake Superior mining region. The two companies announced acquisitio

    Jan 10, 1950

  • AIME
    Mine and Surface Maps

    By Neil Donnell, O&apos

    MODERN mine maps are largely a product of evolution. The first mine maps used in the west were old composite maps with all the levels plotted on the same sheet. The composite was widely used and occas

    Jan 9, 1950

  • AIME
    Its Everyones Business

    National Minerals Advisory Council A meeting of the National Minerals Advisory Council on August 3rd in Washington, D. C., indicated the vitally important part that the mining industry is to play i

    Jan 9, 1950

  • AIME
    Its Everyones Business

    THE research and policy committee of the Committee for Economic Development, a non-profit research organization composed of leaders in industry and the professions, including such prominent figures as

    Jan 8, 1950

  • AIME
    Inspiration's Successful Change to Open-Pit Mining

    By H. C. Weed

    THE Inspiration Consolidated Copper Co., located in the Globe-Miami district at Inspiration, Ariz., became a producer of copper in 1915. From 1915 until 1948, 116,278,000 tons of ore were produced fro

    Jan 8, 1950

  • AIME
    Its Everyones Business

    PUBLIC hearings began before the Committee for Reciprocity Information on May 24, 1950, for the purpose of unearthing data and opinion that will be helpful in the forthcoming reciprocal tariff and oth

    Jan 7, 1950

  • AIME
    Deposits of Heavy Minerals on the Brazilian Coast

    By Joseph L. Gillson

    BRAZIL has had an industry based on ocean beach deposits of heavy minerals containing monazite, zircon, rutile, and ilmenite for well over 40 years, but except at the very earliest period, prior to 19

    Jan 6, 1950