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Tensile Properties of Rail and 'other Steels at Elevated Temperatures
By John Freeman
THE tensile properties of steels at elevated temperatures have been studied by numerous investigators,1 primarily for the purpose of determining their suitability for structural uses. Tests with this
Jan 1, 1930
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Preparation of Metallic Single Crystals and Twinning in Zinc and Zinc Single Crystals (a8e18352-9158-49b1-97eb-ed30e470a6c9)
By Orlando E. Romig
As metals and alloys are composed of an aggregate of allotriomorphic crystals or grains, each possessing an individual orientation, the physical characteristics of a metal or an alloy are closely rela
Jan 1, 1927
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Cleveland Paper - The Ultimate Source of Metals
By Blamey Stevens
It is now generally agreed that most metals have been brought to the surface of the earth by volcanic agencies. The question as to how these metals came from the volcanic matrix to the mineral deposit
Jan 1, 1913
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Institute of Metals Division - The Determination of Solid Solubilities by Quantitative Metallography of a Single Alloy (TN)
By R. E. Morgan, D. L. Douglass
The determination of phase relationships and solid-solubility limits can be performed by quantitative metallography in addition to the usual X-ray and metallographic techniques. For example, Beck and
Jan 1, 1960
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Sinking a Shaft and Solving a Pumping Problem
By J. Fred Johnson
MORE ORE is mined in the Bingham District than in any other mining district in Utah. In addition to the open-pit operations of the Utah Copper Co., there have been, many large underground mines. Until
Jan 1, 1934
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Pittsburg Paper - The Ultimate Source of Ores
By Charles R. Keyes
PAGE. I. IntRoduction,...........139 11. Four Phases of Primary Ore-Genesis,......141 1. Extraction of Ore-Materials from Sea-Water,....141 A. Early Views,........141 B. Metals in Sea-Water,.....
Jan 1, 1911
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Logging and Log Interpretation - Some Effects of Invasion on the SP Curve
By L. F. Elkins
Water coming into wells with bottom water present in the Fosterton field, when their oil recovery was only 0.1 to 1.5 per cent of oil in place below the lowest perforation, confirms lack of shale barr
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Part 1. Accounting For The Extractive Industries (2c007f3d-0020-4c34-8e9d-834c17fed200)
By Maurice E. Peloubet
This discussion of accounting will describe the statements and the information that the accounting system produces, from the point of view of those who use such systems rather than of those who prepar
Jan 1, 1964
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Minerals Beneficiation - Countercurrent Decantation: When and Why
By E. J. Roberts
Hydrometallurgical operations and many processes in the chemical industry require the separation of dissolved material from solids. One of the decisions which has to be made in designing a plant for s
Jan 1, 1961
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Solution Mining Of Evaporites And Its Relationship To The Future Of Hydrometallurgy
By Charles H. Jacoby
The solution mining of evaporites has a history of approximately 5,000 years. The insitu leaching of metalliferous ore will have many of the same characteristic problems which have confronted industry
Jan 1, 1974
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Drilling – Equipment, Methods and Materials - Mechanics of Differential Pressure Sticking of Drill Collars
By H. D. Outmans
A method has been developed for determining the relative water wet-tability (fraction of the surface wet by water) of porous media. This method involves the adsorption of methylene blue dye from an aq
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Sand Filling through Pipes and Boreholes
By Lucien Eaton
THE use of filling in mines is less common in the United States than it is in Europe, where in some places it is required by law. In most cases the filling is placed by hand, and the material used for
Jan 1, 1932
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Reservoir Engineering - General - Internal Anatomy of a Tight, Fractured Hunton Lime Reservoir Revealed by Performance – West Edmond Field
By L. F. Elkins
In 1946 Littlefield, Gray and Godbold published a thorough geologic description of the West Edmond Hunton Lime reservoir, located in Central Oklahoma, and discussion of its early performance.l They st
Jan 1, 1970
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Minerals Beneficiation - Preferential Energy Consumption in Tumbling Mills
By P. Somasundaran, D. W. Fuerstenau
This article presents the results of an analysis of grinding of 1:1 mixtures of 4x8-mesh quartz and limestone in laboratory ball and rod mills. From these experiments, the amount of energy consumed in
Jan 1, 1963
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Relation of Gas-well Spacing to Ultimate Recovery
By D. T. MacRoberts
Tins paper embodies the results of theoretical studies concerning gas reservoirs, especially the effect of drilling programs of various intensities upon pressure depletion and ultimate recoveries. The
Jan 1, 1938
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PART I – Papers - Irradiation-Induced Densification of Pyrolytic Carbon
By J. C. Bokros, A. S. Schwartz
The irradiation-induced densification of pyrolytic carbon has been shown to take place by a simple first-order rate process. The values of the densification constant, kd, for isotropic carbons are 1.0
Jan 1, 1968
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Minerals Beneficiation - Relation of Magnetic Susceptibility to Mineral Composition
By David R. Mitchell, Ernest M. Spokes
There is evidence that study of minerals now considered to have susceptibilities too low for magnetic separation should be continued. Present concepts may be false. INFORMATION on magnetic properti
Jan 1, 1959
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Extractive Metallurgy Division - Kinetic and Equilibrium Studies of Redox Reactions in Liquid Bismuth
By D. H. Gurinsky, D. G. Schweitzer
The empirical equilibrium constantsd the heat of reaction for the reduction have been determined from 300° to 500°C. The mechanisms of the oxidation of uranium and magnesium fro
Jan 1, 1962
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San Francisco Paper - Biographical Notice of Samuel Franklin Emmons
By George F. Becker
A Nere record of Emmons's professional career would very inadequately represent the man. That he was eminent mc know, and our successors will realize in due time; but they must depend upon us for
Jan 1, 1912
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A Peculiar Type Of Intercrystalline Brittleness Of Copper
By Henry Rawdon
THE following note describing the behavior of copper under rather unusual conditions is offered here for its suggestiveness rather than as a complete study of the question. The examinations described
Jan 2, 1920