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Developments In PelletizingBy Alan English
INTRODUCTION During the Bicentennial Year in the United States of America, recognition should be given to the fact that 20 years ago the first large-scale commercial pelletizing plant was started
Jan 1, 1977
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New York Paper - Handling Ore in Mines of Butte DistrictBy H. R. Tunnell
Every one connected with a mine knows that it is hard to keep down the costs of moving ore from the place where it is broken to the shaft or portal. Considered broadly, the subject of handling would c
Jan 1, 1923
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New York Paper - Handling Ore in Mines of Butte DistrictBy H. R. Tunnell
Every one connected with a mine knows that it is hard to keep down the costs of moving ore from the place where it is broken to the shaft or portal. Considered broadly, the subject of handling would c
Jan 1, 1923
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St. Louis Paper - Zinc Mining at Franklin, N. J. (with Discussion)By B. F. Tillson, C. M. Haight
I. General Remarks..........................723 1. Location............................723 2. Characteristics of the Orebody..................725 (a) Mineralogical (b) Shape, Strike, Dip, Size
Jan 1, 1918
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Rates Of Open-Hearth ReactionsTHE problem of reaction rates in the open-hearth process is essentially that of trying to form a fairly clear picture of the "chemical mechanisms" in the bath. Quantitative data on reaction rates woul
Jan 1, 1951
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Part VIII - Papers - Heterogeneous Nucleation of Undercooled SilverBy G. L. F. Powell
Bulk samples of silver have beat undercooled lo a large degree in contact with crystalline siliceous and ceramic oxide materials, indicating lhat stable oxides and oxide compounds are not the heteroge
Jan 1, 1968
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Salt Lake Paper - Leaching Experiments on the Ajo OresBy Stuart Croasdale
Not long ago I was called upon to conduct some experiments on the treatment of ores from the New Cornelia copper mine, Ajo mountains, Arizona, for the Calumet & Arizona Copper Co. The problem was a ve
Jan 1, 1915
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Institute of Metals Division - Grain Growth in Dilute Alloys of CopperBy S. Weinig, E. S. Machlin
IN a previous study of the grain boundary stress relaxation phenomenon,' the authors had arrived at the conclusion that two successive steps were involved in the complete relaxation of stress at
Jan 1, 1958
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Papers - Properties of Metals - Working Properties of TantalumBy M. M. Austin
Pure metallic tantalum, from a practical standpoint, is one of the newer developments in the metal field. Although it was used as filament in incandescent lamps in 1906, only within the last, five yea
Jan 1, 1930
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Recovery Of Resin From Utah CoalBy Ernest Klepetko
A NOTABLE amount of fossil resin exists in many of the bituminous coal beds of Utah. The upper part of these show a marked concentration of resin, which occurs primarily in the fracture seams. In gene
Jan 1, 1947
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Preparation of Industrial Minerals - Recovery of Resin from Utah Coal (Mining Tech., May 1947; Coal Tech., May 1947, T.P. 2166)By Ernest Klepetko
A notable amount of fossil resin exists in many of the bituminous coal beds of Utah. The upper part of these show a marked concentration of resin, which occurs primarily in the fracture seams. In gene
Jan 1, 1948
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Preparation of Industrial Minerals - Recovery of Resin from Utah Coal (Mining Tech., May 1947; Coal Tech., May 1947, T.P. 2166)By Ernest Klepetko
A notable amount of fossil resin exists in many of the bituminous coal beds of Utah. The upper part of these show a marked concentration of resin, which occurs primarily in the fracture seams. In gene
Jan 1, 1948
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Part VII - Papers - Deformation of Silver-Zinc Single Crystals as a Function of Zinc ConcentrationBy W. L. Phillips
Stress-train curves were obtained for single crystals of silver, Ag-5 pct Zn, Ag-10 pct Zn, and Ag-20 pct Zn tested in tension and shear at 78°, 195°, and 297°K. At room temperature the critical resol
Jan 1, 1968
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Conference on Production and Design Limitation and Possibilities for Powder Metallurgy (Metal Technology, January 1945) - Sintered MagnetsBy C. R. Fulton
The idea of making permanent magnets by sintering is not a new one, but until the introduction of the iron-nickel-aluminum permanent-magnet alloys there was little need for such a process. Permanent-m
Jan 1, 1945
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Institute of Metals Division - Effect of Temperature on the Creep of Polycrystalline Aluminum by the Cross-Slip MechanismBy N. Jaffee, J. E. Dorn
An activation energy of 27,400 5 1000 cal per mole was obtained for the creep of poly crystaLline aluminum over the temperature range of 273° to 350°K, at strains varying from 0.003 to 0.230. Stresses
Jan 1, 1962
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Rock In The Box Mining And Exploration Division - Adult Students Need Adult ResponsibilitiesBy John F. Abel
"The most conservative persons I ever met are college undergraduates." Woodrow Wilson said that in 1905. No one is saying anything like it today. Chaos on the campus was a cliche of the sixties. Sinc
Jan 1, 1970
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A Re-Evaluation Of The Origin And Diagenesis Of Borate Deposits, Death Valley Region, CaliforniaBy Charles E. Barker
Jan 1, 1985
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Chicago Paper - Experimental Investigations on the " Loss of Head" of Air-Currents in Underground WorkingBy D. Murgue
The circulation of air in underground workings is subject to a gradual and continuous reduction of its pressure, from intake to outlet, caused by the friction between it and the more or less rough and
Jan 1, 1894
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Institute of Metals Division - Constitution and Properties of Some Iron-Bearing Cupro-Nickels - DiscussionBy F. H. Wilson, E. W. Palmer
G. L. Bailey (British Non-Ferrous Metals Research Association, London, England)—I was glad to see this further work on the structure and properties of the Cu-Ni-Fe alloys of low nickel content in whic
Jan 1, 1953
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Part I – January 1968 - Papers - The Relation Between Superplasticity and Grain Boundary Shear in the Aluminum-Zinc Eutectoid AlloyBy David L. Holt
The contribution of grain boundary shear to total elongation, CS/E', has been measured in an Al-Zn eu-tectoid alloy that was quenched from above the invariant temperature, then annealed at 250° C
Jan 1, 1969