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  • NIOSH
    Mineral Indicators - Bituminous Coal And Lignite: (dc9eb6a8-3c88-4933-81fe-334238c72f19)

    The revised estimate of coal production in January 1977, is 39 million tons -- down 12 mi 11 ion tons compared with production in January of last year, largely as a consequence of the snow storms and

    Jan 1, 1977

  • DFI
    Nonlinear Spring Functions For 3-D Seismic Responses Of Structures On Piles

    By Nien-Yin Chang

    The contemporary seismic response analysis of structures using a finite element analysis code requires six elastic spring constants to address the six degrees of freedom ground/foundation contribution

    Jan 1, 2007

  • NIOSH
    IC 8417 Helium Symposia Proceedings In 1968 - A Hundred Years Of Helium - Helium Applications Symposium, Washington, D.C., October 23-24, 1968; Helium Centennial Symposium, Atlantic City, N.J., September 11, 1968.

    Applications of helium in aerostatics, cryogenics, space, and undersea work are described in papers from the Helium Applications Symposium. Specific subjects include investigations of X-ray sources by

    Jan 1, 1969

  • AUSIMM
    Distribution of Hard Hematite Ore at the Quadilßtero Ferrffero, Minas Gerais, Brazil and its Possible Genetic Significance

    The hematite deposits of Quadrilßtero Ferrffero (QF) are hosted by the Proterozoic itabirites of the Itabira iron formation (Harder and Chamberlin, 1915). These deposits are widely distributed at QF a

    Jan 1, 2002

  • NIOSH
    Mineral Indicators - Aluminum--(See Also North Carolina)

    On April 5, the potlines at Consolidated Aluminum Corp.'s 35,000 ton-per-year primary aluminum smelter at Lake Charles, La., were frozen when natural gas lines were accidently cut by a dredge. Fu

    Jan 1, 1980

  • SAIMM
    Redox catalysts for Becher aeration

    By S. Fletcher, C. Calle, K. Constanti-Carey, R. Ruzbacky, M. D. Horne

    Laboratory test-work has established that two classes of redox catalysts based on anthraquinone and bipyridinium derivatives are effective in accelerating the rate of removal of metallic iron from red

    Jan 1, 2003

  • NIOSH
    Mineral Indicators - Aluminum (71314e0d-45fa-4c74-84f3-a93382bd3cfc)

    Mitsui Aluminium Co. of Japan announced that it would finance 25 percent of the construction costs for the 217,000 ton-per-year primary aluminum smelter being built by Alumax, Inc. at Holly, SC. Mitsu

    Jan 1, 1979

  • AUSIMM
    Metamorphism of the Itabira Iron Formation and Haematite Generation at the Quadrilßtero Ferrffero, Minas Gerais, Brazil

    By D M. Aranha, M A. Fonseca, M Echtern

    The regional syndeformational metamorphism affecting the Itabira Iron Formation (IIF) at Quadrilßtero Ferrffero (QF) was formerly discussed by Dorr (1965), who proposed that quartz grain size could mo

    Jan 1, 2007

  • NIOSH
    OFR-9(1)-80 Handbook For Surveys Of Inhalation Contaminants In Above-Ground Metal And Nonmetal Mining And Processing Work Areas

    The objective of this handbook is to provide the inspector with guidance for recognizing hazards from inhalation contaminants in above ground work areas of underground and surface metal and nonmetal m

    Jan 1, 2011

  • NIOSH
    State Mineral Summaries - 1992

    The STATE MINERAL SUMMARIES publication provides estimated data and summaries of mineral activities at the State level for 1991. Most of the estimates are based on nine months data. Individual State s

    Jan 1, 1992

  • SME
    Laboratory heap leach testing : How small-and large-scale tests compare

    By Russell B. Dix

    Laboratory column leach tests are used routinely to evaluate gold and silver ores for heap leaching. The tests are fairly straightforward. The ore to be tested is placed into an appropriately sized le

    Jan 1, 1989

  • DFI
    Realization Of An Innercity Car Park By Means Of A Complex Underpinning Measure

    By Robert Thurner

    The underground car park "Admonterhof in the historical centre of Graz is an example for the technical and economical success of a complicated structural design using a concept on the basis of the obs

    Jan 1, 2006

  • SME
    A Century of Research Leading to Understanding the Scientific Basis of Selective Mineral Flotation and Design of Flotation Collectors Mining, Metallurgy and Exploration

    By Douglas W. Fuerstenau, Pradip Pradip

    The design and development of selective flotation collectors has been the key to the remarkable success of flotation in beneficiating complex, difficult-to-process ores. Sustained research efforts in

  • NIOSH
    Mineral Indicators - Antimony -

    A new mine has begun production of antimony ore and concentrates in Serbia, Yugoslavia. The mine is operated by the mining and metallurgical enterprise "Aajaca." Initial production is running at appro

    Jan 1, 1976

  • SME
    An Overview Of Gemstone Production In The United States

    By G. T. Austin

    This is an overview of the gemstone industry with special attention on particular states within the united states. The U.S. Bureau of Mines, Department of the Interior compiled and analyzed the inform

    Jan 1, 1995

  • NIOSH
    Commodity Data Summaries 1976 - An Up-To-Date Summary Of 95 Mineral Commodities ? Aluminum

    1. Domestic Production and Use: In 1975.12 companies operated 31 primary aluminum reduction plants, with 3 firms accounting for 67% of production capacity. Washington, Oregon, and Montana accounted fo

    Jan 1, 1976

  • AIME
    The Excursion To Hawaii And Japan.

    By R. W. Raymond

    On the Manchuria. SOMEWHAT fatigued with excess of enjoyment and strenuous continuity of movement on the trip to and through California, the members and guests of the Institute party embarked Tuesday

    Jan 1, 1912

  • NIOSH
    Abrasive Materials (MATERIALS MINERALS YEARBOOK-1977)

    By Robert G. Clarke

    The production of natural abrasives varied in quantity and value compared with those of 1974. Output of tripoli-type materials and garnet both decreased in quantity and value. Special silica stone pro

    Jan 1, 1977

  • AIME
    Improved Outlook for Gold and Silver

    By Scott, Turner

    IN 1933, the monetary metals were produced in a ratio of 6.7 oz. of silver to 1 oz. of gold, the lowest relatively for silver since the period from 1851 to 1865. At the beginning of that period, the v

    Jan 1, 1934

  • SME
    Energy Plan For Mining Operations - Introduction

    By F. Mielli

    Ranging between 20% and 40% of the typical mining operational costs, energy in mining operations is a growing concern for the industry. However, this concern is a complex, multi-faceted variable that

    Jan 1, 2012