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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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