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Minerals Beneficiation - Chemical Upgrading of Stillwater Chromite
By D. L. Harris
Chemical upgrading testwork on Stillwater chomite concentrate shows that reduction roasting and leaching (sulfuric acid and/or ferric sulfate) can provide upgraded feed to ferrochromium furnaces for m
Jan 1, 1964
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Institute of Metals Division - Crystal Structure of UAI4
By Bernard S. Borie
THE U-A1 binary system has been studied by Kaufmann and Gordon.' They have shown that three intermetallic compounds occur in the system: UAl², UAl², and a third compound tentatively identified as
Jan 1, 1952
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Institute of Metals Division - Neptunium-Aluminum Intermetallic Compounds
By O. J. C. Runnals
The intermetallic compounds NpAl2, NpAl3, and NpAl have been prepared, and examined by X-ray diffraction methods. The compounds are isostructural with the corresponding U-Al compounds. NpAl3 is face-c
Jan 1, 1954
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The Thirty-Hour Week of the Coal Miner
By S. A. TAYLOR
AN EDITORIAL on the Strike Situation in the Coal mining industry in the New York Evening Post of Nov. 4, 1919, gave what purported to be statistics of the Department of Labor, for a period of two week
Jan 1, 1920
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Employees' Welfare
Readers of recent Bulletins have doubtless observed that the problem of improving both material and moral condition of employees is receiving close attention from influential members of the Institute.
Jan 5, 1918
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Gold and World Trade
By James R. Finlay
SOMETIMES the American Institute of Mining and Metallurgical Engineers appears to be a strictly technical society, and if so my paper should deal with the technical operations of finding and producing
Jan 1, 1933
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Dealing With Interest Rate And Exchange Rate Risks
By James L. Poole
INTRODUCTION Companies in the mining industry are subjected at times to currency exchange rate risks and interest rate risks. The former occurs any time a firm deals in more than one currency. The
Jan 1, 1985
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Technical Notes - Substructures in Retained-Beta Phase of Ti-Ni Alloys
By J. Gordon Parr, D. H. Polonis
IN a previous study of hypereutectoid Ti-Ni alloys' a substructure was observed in quenched powder specimens when the constitution was 100 pet retained ß body-centered-cubic phase. The alloy powd
Jan 1, 1957
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Some General Problems of the Mineral Industry
By Thomas T. Read
THE official title of our topic for today is "Resources of Metals and Other Strategic Minerals," but in accepting the invitation to open this discussion I claimed the privilege of being allowed to tal
Jan 1, 1929
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Institute of Metals Division - The Sigma Phase in Binary Alloys
By P. Greenfield, P. A. Beck
The phase is a hard and extremely brittle material with a tetragonal crystal structure, containing 30 atoms per unit cell' It occurs in many binary and ternary alloys of the transition elements.
Jan 1, 1955
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The Continuous Wide Strip Steel Rolling Mill - Social and Economic Consequence of a Recent Development in American Steel-Mill Practice
By Edwin Dudley Martin
DURING the past twelve years the iron and steel industry has made a major advance through the development of the continuous wide strip rolling mill. So far-reaching have been the results that not only
Jan 1, 1939
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Part III - Papers - Rapid Vapor Phase Growth of High-Resistivity GaP for Electro-Optic Modulators
By J. J. Tietjen, D. Richman
Single-crystal Gap lms been epitaxially grow from the vapor phase at a rate oJ 3 p per nzin without encountering a7Zy low-ang-le grain boundaries or debwading- the electrical properties of the materia
Jan 1, 1968
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New York Paper - Mental Tests in Industry (with Discussion)
By Robert M. Yerkes
The following is a brief account of the methods of measuring intelligence especially prepared for use in the U. S. Army, of typical results, and of some of their immediately practical applications. It
Jan 1, 1919
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The Thriving Bootleg Anthracite Industry in Pennsylvania
By George H. Jones
NO STRANGER phenomenon exists in the American mining industry today than the so-called bootleg anthracite industry in Pennsylvania which now produces probably close to 15 per cent of the total hard co
Jan 1, 1939
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Iron and Steel Division - The Density of Liquid Iron from the Melting Point to 2500°K
By J. A. Cahill, A. D. Kirshenbaum
Using an alumina or zirconia crucible with an alumina sinker or a molybdenum sinker coated with zirconium dioxide, the density of liquid iron was determined by the immersed-sinker method over the temp
Jan 1, 1962
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Present Economic Situation of the Oil Industry
By M. E. Lombardi
IN comparison with the mining industry the petroleum industry is new and inexperienced, and until now it might have been called the fortunate industry. Its great good fortune consisted in two things;
Jan 1, 1931
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Institute of Metals Division - Prismatic Slip in Zone-Refined Beryllium (TN)
By D. F. Kaufman, E. D. Levine, L. R. Aronin
ThE primary slip plane in hcp metal crystals can usually be inferred from the c/a ratio. Basal slip is the primary system at room temperature for zinc, cadmium, magnesium, cobalt, and rhenium, all of
Jan 1, 1964
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The Passing of the Prospector
By MERLE HOWARD GUISE
WHEN I was a boy I walked into Fairbanks in 1905. I was but a soft chechako, and arrived with blisters covering my feet, as a result of "mushing" the 400-mile trail on foot. Because of them, the displ
Jan 1, 1929
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Members Of The Institute In Military Service (5ef1cd2c-4f23-4f16-80ae-691d61adc2ae)
(The following list contains the names of those members of the Institute of whose connection with military service we have only recently become acquainted; it also includes the names of a few who have
Jan 7, 1918
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Gold And Silver - Money And Credit
By Charles White Merrill
Money is one of the most .pervasive elements in human life. The compensation for a workman's daily efforts is expressed as a wage and is measured in money. What an individual may consume depends
Jan 1, 1959