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Ore Passes, Tunnels And ShaftsBy David J. Selleck, Eugene P. Pfleider
9.61. Introduction. Open pit mining methods produce more than 80% of all raw materials today in the United States. Much of this comes either from properties that formerly employed underground methods
Jan 1, 1968
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Student Associates (dc9d62da-d3e7-4c40-90a1-df05a0e37955)Abbott, Robert H., (S'42) Agricultural & Mech. College of Texas, College Sta.. Texas. Abrahamson, Guy C., (S'43) Univ. of California, Berkeley. Calif. Abrego, Alfredo, (S'43) Texas Co
Jan 1, 1943
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Minerals Beneficiation - Fine Grinding at Supercritical Speeds - Discussion - CorrectionBy R. T. Hukki
John F. Myers (Consulting Engineer, Greenwich, Corm.)—Since the art of comminution has lain practically dormant for many years, it is very interesting that R. T. Hukki approaches the subject with a ne
Jan 1, 1959
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Coeur D’Alene Profile – 1966 - IntroductionBy John V. Beall
Hard as the Revett quartzite are conditions governing the deep mines of the Coeur d'Al6ne. In fourscore years of mining, heat and pressure have been the rewards of preseverance. Such obstacles ar
Jan 7, 1966
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Papers - Zinc - History of the Metallurgy of ZincBy W. R. Ingalls
In reviewing the history of the metallurgy of zinc, I shall pass hastily over what is only of antiquarian interest. That has been excellently treated by Dr. Bernhard Neumann in "Die Metalle" (1904) an
Jan 1, 1937
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Papers - Mining - Improvements in Mining Practice in the Butte District (Mining Technology, July 1941)By E. R. Borcherdt
Methods and equipment are subject to study in the Butte district at all times in order that advantage may be taken of any new developments that might serve to increase efficiency and lower costs. D
Jan 1, 1943
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Papers - Mining - Improvements in Mining Practice in the Butte District (Mining Technology, July 1941)By E. R. Borcherdt
Methods and equipment are subject to study in the Butte district at all times in order that advantage may be taken of any new developments that might serve to increase efficiency and lower costs. D
Jan 1, 1943
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Papers - Concentration - Collector Coatings in Soap Flotation (Mining Technology, July 1943.) (with discussion)By Arthur F. Taggart, Nathaniel Arbiter
The fact that the floatability of minerals with fatty-acid collectors changes as the pH of a pulp varies was utilized in the early days of flotation, when sulphuric acid was used with oleic acid to fl
Jan 1, 1943
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Papers - Concentration - Collector Coatings in Soap Flotation (Mining Technology, July 1943.) (with discussion)By Nathaniel Arbiter, Arthur F. Taggart
The fact that the floatability of minerals with fatty-acid collectors changes as the pH of a pulp varies was utilized in the early days of flotation, when sulphuric acid was used with oleic acid to fl
Jan 1, 1943
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Electrolytic Zinc Plant Of American Zinc Company, East St. Louis, IllinoisBy O. H. Banes
The electrolytic zinc plant of the American Zinc Company located at Sauget, Illinois started operations in April 1941. The plant had a designed capacity of 45(T) per day. The original flow sheet was q
Jan 1, 1970
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Boston Paper - Husgafvel's Improved High Bloomary for Producing Iron and Steel Direct from OreBy F. Lynwood Garrison
Except in the old Catalan forge, or its modifications, attempts to make iron and steel directly from ore in a practical and economical manner have failed so frequently and completely that such schemes
Jan 1, 1888
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Iron and Steel Division - Solubility of Nitrogen in Liquid Iron Alloys II KineticsBy John F. Elliott, Robert D. Pehlke
The rate of reaction of nitrogen with liquid iron and with binary alloys of iron and Al, Cb, Cr, Ni, O, S, Si, and W were measured. The surface active elements, oxygen and sulfur, decrease the rate
Jan 1, 1963
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Coal - Solution Hydrogenation of Lignite in Coal-Derived SolventsBy D. S. Gleason, D. E. Severson, D. R. Skidmore
Pittsburg and Midway Coal Co. has modified the German Pott-Broche process, on which patents date back to 1927, to produce on a bench scale liquid products by solution hydrogenation of coal. A continui
Jan 1, 1971
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Distribution of Tensile Strength in Hard Drawn Copper Wire (ee5ff4ce-74fb-4688-88ab-abc048467c6b)By Frank Harris
THE strength of hard drawn copper wire is a question of considerable importance to both manufacturer and consumer. Unlike steel and alloy wires, in which strength is governed by both chemical and phys
Jan 1, 1928
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Metallurgical Society of AIME and Divisions Society OfficersInstitute of Metals Division Iron and Steel Division Extractive Metallurgy Division J C Kinnear, Jr, President A W Thornton, Past President W R Hibbard, Jr, Vice-President R W Shearman, Secretar
Jan 1, 1957
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Coal - Municipal-water Needs vs. Strip Coal MiningBy Gregory M. Dexter
Recent litigation in Pennsylvania between three coal-mining companies and a private water company resulted in the payment by the coal companies of the equivalent of about $500,000 to buy a new water s
Jan 1, 1950
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PART IV - Communications - Activation Energies for Creep of Polycrystalline Nickel WireBy J. E. Cannaday, R. J. Austin, R. K. Saxer
PREVIOUS investigators have determined activation energies and have postulated various controlling mechanisms for creep.'-' Recently Barrett et 01.I5 have suggested, as the result of their w
Jan 1, 1967
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Theoretical MetallurgyBy Robert F. Mehl
EXTENSION of physical and chemical methods of research in the study of metallic behavior continues rapidly, particularly in the correlation of behavior with crystal structure, and in the analysis of e
Jan 1, 1934
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Wilkes-Barre, Pa.Paper - Electric Power a Factor in the Anthracite Field (with Discussion)By W. A. Thomas
Steam is, and doubtless always will be, the basic power in the anthracite industry, either directly applied through engines and pumps or electrically. The rapidity with which electric power is being a
Jan 1, 1922
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New York Paper February, 1918 - The Briquetting of Anthracite Coal (with Discussion)By W. P. Frey
The briquet plant of the Lehigh Coal and Navigation Co., at Lansford, Pa., has previously been referred to.' It has passed the stage of experiment and now rests on a foundation practically and fi
Jan 1, 1918