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Part II – February 1969 - Communication - Nickel Activity Data in the Nickel-Aluminum System at 1000°C
By A. U. Seybolt, R. E. Honnemon
THE purpose of this communication is to present activity data of nickel in the Ni-A1 binary system that was obtained for oxidation studies in this system. This data has been calculated from previous
Jan 1, 1970
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Minerals Beneficiation - Rotobelt Filter, New Tool in Minerals Beneficiation
By C. F. Cornell, R. C. Emmett, D. A. Dahlstrom
FOR many years the disk-type and cloth-covered drum filters have found widest application in liquid-solids separation, which uses continuous filters. The disk type is less expensive, occupies less flo
Jan 1, 1959
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Mining - Mechanics of Rock Slopes
By D. H. Trollope
In engineering in general, close agreement between theoretical predictions and structural performance is rare—this is particularly true in rock slopes. Since the complexity of natural arrangements mak
Jan 1, 1961
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Institute of Metals Division - Microstructure of Iron-Sulfur Alloys
By Lawrence H. Van Vlack, Alfred S. Keh
The distribution of sulfur in iron was found to be dependent upon the time and temperature of the treatment as well as the chemical composition of the sulfide. With higher temperatures, the sulfide ph
Jan 1, 1957
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Problems Of Mining And Processing Mineral Aggregates
By Nathan C. Rockwood
THE title of this paper, I understand, was suggested by professional mining engineers as an opportunity for someone to pose problems rather than to offer solutions for them, but the paper will merely
Jan 1, 1943
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Reservoir Engineering- Laboratory Research - Effect of Cleavage Rate and Stress Level on Apparent Surface Energies of Rocks
By W. W. Krech, T. E. Perkins
As fractures are propagated through rocks, energy is absorbed near the extending crack tip. Apparent surface energies for several rocks have been measured by cleavage under dynamic con-ditions. At nom
Jan 1, 1967
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Institute of Metals Division - Some Modifications in the Diagram for the Tantalum-Zirconium System
By L. F. Pease, J. H. Brophy
A phase diagram for the Ta-Zr system is presented. The system is of the minimum-melting point type with the 0-zirconium phase decomposing monotectoidally at 785°C and 95.5 at. pct Zr. The minimum s
Jan 1, 1963
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Comparative Tests Of Hammer Drill Bits
By Carroll Forbes
INTRODUCTION MANY different shapes of drill bits are in use with hammer drills, but little definite information is available whereby to judge which one of these shapes is the best. The following inv
Jan 8, 1917
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Bibliography of Injuries to Vegetation by Furnace Gases
By Persifor Frazer
1. SMOKE PREVENTION. Report of Select Committee of House of Commons (1843). Nuisance considerably abated in Leeds (Wm. Backerd, July 13, 1843, 239 pages). A synoptic index, p. 211, gives, in alphabet
May 1, 1907
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Part II – February 1968 - Papers - Dislocation Structures in Niobium (Columbium) Single Crystals Observed by Optical Microscopy
By R. G. Vardiman, M. R. Achter
Observations of dislocation structure in niobium are presented using two techniques. Triangular pits developed by electroetching are confined to orientations in the stereographic triangle between the
Jan 1, 1969
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Rock Mechanics - Stress Required to Initiate Core Discing
By V. J. Parks, Leonard Obert, A. J. Durelli
The state of stress in the region where core discing initiates has been investigated through the use of three-dimensional photoelastic models and the results of this study have been compared with thos
Jan 1, 1969
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Production and Preparation of Blast-furnace Flux
By P. C. Hodges
WHILE there is very little romance connected with the operation of a stone quarry, yet to those who have participated in the growth and development of a business that has been a pioneer in its field a
Jan 1, 1936
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Geophysics and Geochemistry - Quantitative Distribution of Major and Trace Components in Rock Masses
By E. H. T. Whitten
Fundamental principles of trend surface analysis are briefly reviewed. Recent analyses of several granite masses illustrate the method of estimating the quantitative regional composition and also vari
Jan 1, 1961
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A Study Of Drosses From Lead Blast Furnaces
By Gerald Greene
Tan various lead producers have given the subject of lead drosses much attention in recent years but the problem of their economical treatment is yet to be solved. Formerly the copper in the furnace
Jan 1, 1935
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Hardening Effects Resulting From The Formation Of Both A Precipitate Phase And A Superlattice
By M. R. Pickus, I. W. Pickus
ORDINARILY age-hardening is thought of as being associated with a limited solubility of one metal in another. Much less has been written about the type of age-hardening that attends the formation of s
Jan 1, 1943
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Reservoir Engineering – General - Pulsed Nuclear Magnetic Resonance Studies of Porosity, Movable Fluid and Permeability of Sandstones
By A. Timur
Fluid flow properties of porous media have long been of interest in such varied disciplines as geology, geophysics, soil mechanics, and chemical, civil, and mechanical engineering. This interest has r
Jan 1, 1970
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Institute of Metals Division - Deformation Twinning in Copper Whiskers of [111] Orientation (TN)
By M. N. Shetty
LARGE copper whiskers (-100 p) of 11111 orientation were tested in a floor-model Instron testing machine, at liquid nitrogen temperature. (Testing methods will appear elsewhere.) Whiskers deformed by
Jan 1, 1965
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82. Changes and Developments in Concepts of Ore Genesis - 1933 to 1967
By John D. Ridge
Here are summarized 162 papers, published between 1933 and 1967, that deal with various aspects of ore genesis. Emphasis is placed on additions to, or modifications of, ore-formation theory, no matter
Jan 1, 1968
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Gold: Its Production and Marketing
By F. W. Bradley
GOLD is a large subject. One could talk about its geological or mineralogical occurrences, prospect- i11.g for it, mining of .it, its metallurgy or its marketing; but I have decided to limit my discus
Jan 1, 1932
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Coal - Cyc!one Thickener Applications in the Coal Industry
By H. E. Criner, M. G. Driessen
THE cyclone thickener has two important applications in wet washing plants: (1) water clarification, and (2) fine coal recovery. The thickener consists of a conical chamber into which the fluid i
Jan 1, 1951