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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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