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Thermodynamics And Coal Formation (43f63970-a1ec-4cc6-97e1-d6b9fd9f9ba2)
By Walter Fuchs
IT is now generally conceded that coal is the product of deposition and transformation of debris of forests and swamps.29 Ample data are available to illustrate the metamorphosis of biochemical substa
Jan 1, 1941
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Modernization - An Answer to the Cement Industry's Dilemma
By A. H. Tousley
Current problems in the cement industry are discussed and suggestions for solving them by modernization are made. Cement facility modernization is discussed in considerable detail with examples illust
Jan 1, 1972
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Coal-Mining Practice in Europe
By George S. Rice
INTERESTING developments going on in European coal mines look to: (1) increasing mechanization; 12) concentration of mining; (3) improvement in safety appliances; and (4) studies in bettering roof sup
Jan 1, 1934
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The Notion Of "Extension Variance" And Its Application To The Grade Estimation Of Stratiform Deposits
By Michel David
One of the most important questions that arises in ore estimation can be stated as follows: What is the error when one extends the grade of a sample to a certain volume? The theory of regionalized var
Jan 1, 1969
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Discussion - Production Of Acid Iron Ore Pellet For Direct Reduction, Using An Organic Binder - Technical Papers, Mining Engineering, Vol. 36, No. 10, October, 1984, pp. 1437 -1441 – de Souza, R. P., de Mendonca, C. F., Kater, T.
By G. G. Reed
G.G. Reed, Jr. The authors are to be commended for finding a material for pellets binding that we were unable to uncover during the investigations that led to US Patent No. 3,748,116, "Method for
Jan 1, 1986
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Management and the Engineer
By HAROLD VINTON COES
MANAGEMENT has been tersely defined as getting things done through the efforts of other people; but before we proceed further, let us distinguish between administration, management, and organization.
Jan 1, 1943
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Proceedings Of The One Hundred And Second Meeting, New York, N. Y., February, 1912.
By AIME AIME
The 102d meeting of the Institute was held at the Institute headquarters in the Engineering Societies Building, New York, N. Y., on Feb. 19, 20 and 21, 1912. A Bureau of Information, in charge. of Mr.
Mar 1, 1912
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Extractant Classifications
By A. W. Ashbrook
There are essentially three main classifications for extractants: acidic, basic, and neutral. The acidic and basic are also referred to as cationic and anionic, respectively. Some extractants are s
Jan 1, 1978
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Metal Mining - Activity Increases at Iron Ore Properties - Improvements in Mechanization Noted
By Verne D. Johnston
ALTHOUGH the stocks of Lake Superior iron ore on dock or at furnaces at the beginning of the year were about 6,000,000 tons less than at the beginning of 1938, the steel industry was operating at only
Jan 1, 1940
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Institute of Metals Division - Comparison of Dispersion Hardening in Four Silver-Base Alloys of Equivalent Composition (TN)
By J. Gurland
The effect of four different second-phase additions on the strength of composite alloys with a common matrix was investigated. The four compositions each consisted of 85 pct by volume of silver with
Jan 1, 1962
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Roasting and Magnetic Separation of a Blende-Marcasite Concentrate
By H. I. NORTON, H. O. Hofman
ZINC smelters in the central western. States have established a very high standard of purity for blende-concentrates, viz., zinc 60, iron less than 3, and lead less than 1 per cent. The very low perce
Mar 1, 1905
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Fluid Bed Roasting Of Zinc Concentrate And Production Of Sulphuric Acid And Phosphate Fertilizer At Canadian Electrolytic Zinc, Ltd . Valleyfield, Quebec
By K. H. Heino
Two 200 T/da Lurgi Turbulent Layer fluid-bed roasters have been in operation at Canadian Electrolytic Zinc Limited since 1966. Zinc concentrate containing 52-54% Zn, 9-11% Fe,31-33% S is treated to pr
Jan 1, 1970
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Case Against a Copper Tariff
By AIME AIME
THAT the copper industry is in serious straits is admitted. So are the lead and zinc industries, and both lead and zinc are tariff protected. Conditions in the Western lead, zinc and silver mining dis
Jan 1, 1932
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Eastern Magnetite - Shipping Product Drops 10 Per Cent Owing to Lack of Experienced Miners
By J. R. Linney
THE Eastern Magnetite Industry produced approximately 7,850,000 long tons of crude ore in 1945 from which was obtained approximately 3,650,000 long tons of shipping product or a ratio of 2.10 to 1. La
Jan 1, 1946
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Influence of Stress on Corrosion
By D. J. Jr. McAdam
PART I.-OUTLINE OF INVESTIGATION, DESCRIPTION OF METHODS AND MATERIAL Previous Investigation of the Influence of Stress on Corrosion IN 1917 Haigh1 presented evidence that under simultaneous corr
Jan 1, 1931
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Special Evaluation Problems in Mining
By Dr. O’Neil Thomas J., Donald W. Gentry
"If you can hold a board of cross directors In happiness against their gauzy schemes; If you can dodge the wrath of the electors Till dividends will flow as in their dreams; If you can make a mine pay
Jan 1, 1984
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Engineering Training for Professional and Civil Life ? A Proposal to Produce Well-Rounded Engineers ? An Educational Plan Is Suggested for Postgraduates
By John S. Crout
TWENTY-FIVE years ago the training of an engineer was of interest solely to the educator and to the student entering the field. At that time the engineer's position in society was relatively simp
Jan 1, 1947
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Diamond Drilling with Surfactants in Upper Michigan Amygdaloidal Basalts Using Surface-Set Bits
By Harold F. Unger, Byron S. Snowden, William H. Engelmann
The effects of using surfactant solutions while diamond drilling in amygdaloidal basalt of the Upper Michigan copper mining district were investigated. Nonionic, anionic, and cationic surfactant solut
Jan 1, 1976
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Mill Operations At United Eastern During 1917 And 1918
By Wheeler North
THE United Eastern Mining Co.'s property is located in the Oatman, Gold Roads mining district of Mohave County, Ariz. The mine and mill are some 26 mi. (41.8 km.) southwest of Kingman, the neares
Jan 8, 1919