Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Metallurgy of Zinc - Practice Shows Numerous Small Improvements as Rapid Price Increase Brings Technologic ActivityBy H. R. Hanley
IN AS MUCH as the interesting changes in the economics of the zinc industry are covered nowhere else in this issue, and they are related to technological progress in the metallurgy of zinc, some refer
Jan 1, 1940
-
Coal - Coking Properties of Pittsburgh District CoalsBy D. E. Wolfson, D. A. Reynolds, F. W. Smith
IN 1948 the U. S. Bureau of Mines began a three-phase program to evaluate the extent and quality of U. S. coking coal: 1) a factual appraisal of known recoverable reserves in beds of mineable thicknes
Jan 1, 1958
-
Productivity Improvement in Large Stripping MachinesBy Tom Learmont
The emergence of the dragline as the dominant stripping tool is described and reasons for this are noted. Brief comparisons are made with stripping shovels and wheel excavators. Representative output
Jan 1, 1976
-
The Schumacher Briquetting Process.By Joseph W. Richards
THIS method of briquetting flue-dust, or flue-dust mixed with fine ores, or, in a few exceptional cases, coke-dust, has come into large commercial use in Europe, and a small plant is already in operat
May 1, 1912
-
Metal PricesBy FREDERICW K. BRADLE
I HAVE been puzzled by two lines of thought'; one emanating from Washington, D. C., to the effect that we must all cheer up, that in a very short time, measured in terms of months, prices would b
Jan 1, 1930
-
Secondary Crushing PlantBy A. P. Svenningsen
DURING the work at the test mill in Morenci, it was determined that a suitable feed for the ball mills could be made by a single pass through a short-head cone crusher. These crushers did not require
Jan 1, 1942
-
Impressions of Soviet Russia Gathered at the Geological CongressBy Charles Will Wright
THOSE that attended the seventeenth International Geological Congress held in Russia last summer had an excellent opportunity to gather data and to form impressions on the progress made in the industr
Jan 1, 1937
-
Toronto Paper - The Electric-Air Drill.By William L. Saunders
Many members of the Institute, who participated in the visit made, during the Bethlehem meeting of February, 1906, to the shops of the Ingersoll-Rand Company, at Phillipsburg, N. J., inspected with in
Jan 1, 1908
-
The Relative Merits of Large and Small Drilling-Machines in Development Work.By Frederick T. Williams
THE purpose of this paper is to discuss the relative merits of the large 31/8 in. machine and the small 21/4-in. tappett machine in driving development-headings ; and although the . data here presente
Mar 1, 1906
-
Blast-Furnace PracticeBy Chas. B. Dudley
A Discussion of the papers of Mr. James Gayley, on "The Application of the Dry-Air Blast to the Manufacture of Iron," and of Mr. J. E. Johnson, Jr., on "The Physical Action of the Blast-Furnace," by M
Sep 1, 1905
-
Laboratory Practice at the Fidelity Coal WasheryBy C. MeCulloch
A NOVEL practice in the bituminous coal industry is the accelerated method of burning coal to ash used in the laboratory of the Fidelity washery of the United Electric Coal Companies, Du Quoin, Ill. D
Jan 1, 1937
-
Another Big Annual Meeting AssuredBy AIME AIME
FIVE days, extending from Monday, Feb. 18 to Friday, Feb. 22, inclusive, will be required for the annual meeting this year. The first fours days will be devoted to reading and discussion of papers, ge
Jan 1, 1929
-
The Physical Chemistry Of SlagsSLAG composition, slag constitution, reactions in slag, and reactions between slag and metal-in other words, the physical chemistry of slags-are matters of great importance to the open-hearth operator
Jan 1, 1944
-
Variants Influencing Austenite Grain Size as Determined by Standards MethodsBy R. Schempp
DURING the past few years, general interest in the steel-producing and steel-consuming industries has been centered on the so-called "inherent characteristics" of steels. While often vaguely described
Jan 1, 1937
-
Phenomenal Accomplishments Made by Petroleum Refiners Since Pearl Harbor as All Actual War Needs are MetBy Walter Miller
DURING the second year of America's active participation in the war the main objectives of the petroleum refining industry were again to provide the four most important product needs for war: 100
Jan 1, 1944
-
The Production Of Copper And Copper Alloy TubesBy H. Y. Bassett
THIS paper attempts to show the various major operations used in nonferrous tube mills and does not necessarily represent the current practices at the two plants of the Wolverine Tube Div., of Calumet
Jan 1, 1951
-
Institute of Metals Division - Young's Modulus and Its Temperature Dependence in 36 to 52 Pct Nickel-Iron AlloysBy W. C. Elli, M. E. Fine
YOUNG'S modulus of elasticity in metals ordinarily decreases with rising temperature. The range of the thermoelastic coefficient at room tem- 1/E dE/dT perature (temperature coefficient
Jan 1, 1951
-
Institute of Metals Division - Effect of Mo, W, and V on the High Temperature Rupture Strength of Ferritic SteelBy A. E. Powers
YEARS of experience and research have shown that molybdenum, tungsten, and vanadium are among the most useful and effective elements in augmenting the high-temperature strength of heat-treatable, ferr
Jan 1, 1957
-
The Irish Mining RenaissanceBy Thomas J. O’Neil
From the time of its emergence as an independent state until the late 1950's, the Republic of Ireland suffered from chronic unemployment, the lowest living standard in Northern Europe, and-most s
Jan 1, 1970
-
Railroad Presidents Meet with Herbert Hoover and Mining EngineersBy AIME AIME
A COMMITTEE of the American Railroad Association, consisting of Samuel Rea, president of the Pennsylvania System, Chairman; F. D. Underwood, president of the Erie Railroad; A. T. Dice, president of th
Jan 1, 1920