Search Documents

Search Again

Search Again

Refine Search

Publication Date
Clear

Refine Search

Publication Date
Clear
Organization
Organization
  • NIOSH
    OFR-136-78 Propagation Of EM Signal In Underground Mines

    By Terry S. Cory

    This report is a comprehensive summary of the results of the propagation measurements program conducted for the US Bureau of Mines under Contract H0366028. Data was gathered in the MF frequency range

    Jan 1, 1977

  • NIOSH
    IC 6573 Milling Methods And Costs At The Concentrator Of The Miami Copper Co., Miami, Ariz. ? Introduction

    By H. D. Hunt

    This paper which describes the milling practice of the Miami Copper Co. is one of a series being prepared by the United States Bureau of Mines. LOCATION The mine, concentrator, and other surface

    Jan 1, 1932

  • NIOSH
    Government Actions And The Mineral Industry (dd005bac-daa5-4b21-bd61-2f4113c16e49)

    Lead Tariff.--The full House Ways and Means Committee approved H.R. 6089 which will have the effect of reducing the tariff on unwrought lead to 3% ad valorem, with a floor duty of 1.0625 cents per pou

    Jan 1, 1980

  • NIOSH
    Government Actions And The Mineral Industry (e6dd984d-a67d-4dc2-8850-982c71e4b1c5)

    Antitrust Investigation Dropped. - The Department of Justice announced that it was dropping its 5-year investigation of the aluminum industry. The investigation was over whether the aluminum companies

    Jan 1, 1980

  • NIOSH
    IC 7544 Mines and Mineral Deposits (Except Fuels), Fergus County, Mont

    By Almon F. Robertson

    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

    Jan 1, 1950

  • NIOSH
    Mineral Indicators - Aluminum (52afa842-f160-4911-9105-d0cbeea5ddcb)

    Aluminum Production. -By October 1, Aluminum Company of America will restart a 35,000-ton-per-year unit at its aluminum smelter at Rockdale, Tex., restoring that facility to its full capacity of 325,0

    Jan 1, 1980

  • NIOSH
    Mineral Indicators - Aluminum (4f66e2e8-882d-4f3f-b5c8-6e72d1ac7837)

    Workers at Anaconda Aluminum Company's primary aluminum smelter at Sebree, Ky., were back on the job December 1, after agreeing to a new 3-year contract. The old contract had expired November 15.

    Jan 1, 1980

  • NIOSH
    The National Economy, Raw Nonfuel Minerals, And Processed Mineral Materials - National Economic Statistics

    By Edward E. Johnson

    The U.S. economy made significant progress in 1984. The current-dollar gross national product (GNP), the market value of the Nation's output of goods and services, increased almost 11 percent ove

    Jan 1, 1985

  • NIOSH
    Government Actions And The Mineral Industry

    New GSP Trade Status Approved.--President Carter, by Executive Order effective March 30, has approved Generalized System of Preference treatment for imports of nonferrous metal products and other impo

    Jan 1, 1980

  • NIOSH
    IC 7771 Bibliography Of Zirconium ? Introduction

    By Eleanor Abshire

    This bibliography is the result of a cooperative project undertaken by the Bureau of Ships and the Bureau of Mines to accumulate literature published to date on zirconium and hafnium and to establish

    Jan 1, 1957

  • NIOSH
    Mineral Commodity Summaries 1985 - An Up-To-Date Summary Of 87 Nonfuel Mineral Commodities ? Aluminum

    1. Domestic Production and Use: In 1984, 12 companies operated 27 primary aluminum reduction plants, with 3 firms accounting for 57% of production. Washington, Oregon, and Montana accounted for 35% of

    Jan 1, 1985

  • NIOSH
    Sampling And Analyzing Flue Gases. - Introduction.

    By Henry Kreisinger

    Some of the investigations conducted by the Bureau of Mines have for their object the collecting and disseminating of information regarding methods by which the fuels of the country may be most effici

    Jan 1, 1915

  • NIOSH
    RI 6632 Spectrochemical Analysis Of Tungsten

    By Jr. Gabler

    Methods for the direct spectrochemical determination of impurities at the parts-per-million level in tungsten metal and oxide are presented. Several published procedures were investigated and numerous

    Jan 1, 1965

  • NIOSH
    OFR-127-80 Improved Light-Scattering Dust Monitor

    By Byron S. Kutscher

    This report summarizes the program to develop and construct an improved light-scattering dust monitor (ILSDM). This improved light-scattering dust monitor, which operates on the forward light scatteri

    Jan 1, 1980

  • NIOSH
    OFR-56-75 Early Warning System Of Impending Rock Failure For Safety In Mines And Excavations

    By A. L. Podia

    The purpose of this research was to develop a system capable of detecting changes in the structure of rocks, leading to failure of mine roofs, and/or excavations. A prototype system was developed,

    Jan 1, 1973

  • NIOSH
    Government Actions And The Mineral Industry (35aa520d-3a97-490d-bb46-c0b92558a58c)

    New Trade Status for Mainland China--On January 24, the Congress approved a most-favored-nation trade status with Mainland China for both imports and exports. A Presidential Proclamation had been issu

    Jan 1, 1980

  • NIOSH
    Mineral Indicators - Aluminum (b6c6fa00-b521-4d61-9f60-0a92eebb97b1)

    Anaconda Aluminum Co. began production from a new 60,000-ton-per-year potline at Sebree, KY, which brings the total capacity of the plant to 180,000 tons per year. A strike by workers at Alcan Alu

    Jan 1, 1979

  • NIOSH
    Subject Index to Bureau of Mines Publications from July 1, 1990 to January 1, 1960 - Subject Index M-P

    "M bed, Matanuska valley, Alaska, coal carbonizingproperties B 510M spectral lines, low-energy, study RI 5538Mab shaft, Leadvile district, Colo., investigation RI .1518Maberry process, for aluminum c

    Jan 1, 1960

  • NIOSH
    RI 6996 Fracturing A Deposit With Nuclear Explosives And Recovering Copper By The In-Situ Leaching Method

    By William R. Hardwick

    Present information indicates that a copper deposit can be safely fractured with a nuclear explosive and the copper successfully recovered by the in-situ leaching method. The process is not yet at the

    Jan 1, 1967

  • NIOSH
    Bulletin 139 Control of Hookworm Infection at the Deep Gold Mines of the Mother Lode, CA

    By Joseph H. White, DR. JAMES G. CUMMING

    This report presents the results of an investigation of hookworm infection in the deep gold mines of the Mother Lode, California. In this investigation 1,440 miners of the Mother Lode have been examin

    Jan 1, 1917