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A Criterion For Quasibrittle Crack GrowthBy L. G. Margolin
INTRODUCTION In this paper we derive an expression to predict the onset of growth of a crack in a quasibrittle material. We employ an energy criterion, which was first proposed by Griffith (1920),
Jan 1, 1984
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Factors For The Calculation Of HardenabilityBy Sidney Siegel, J. Gardner Brooks, Irvin R. Kramer
IN 1942 Grossmann1 proposed that the hardenability of a steel may be calculated from its chemical composition by considering the base hardenability associated with its carbon content and grain size an
Jan 1, 1946
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Geology - Nuclear Detector for Beryllium MineralsBy T. Cantwell, N. C. Rasmussen, H. E. Hawkes
Beryl is a mineral that may be difficult to distinguish from quartz by casual field inspection. The easily recognized green color and hexagonal crystal form of coarse-grained beryl are by no means uni
Jan 1, 1960
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Simulation Of Grinding Circuits For DesignBy L. G. Austin, P. T. Luckie, R. R. Klimpel, R. S. C. Rogers
1. INTRODUCTION The Bond method(1.2) for sizing tumbling ball mills has been used successfully for many years. The primary purpose of the Bond calculation is to predict the mill size and mill power
Jan 1, 1982
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Hazleton the Mecca for Coal DivisionBy E. J. Kenaedy, E. H. Robie
THOUGH the fall meeting of the Coal Division was held in the heart of the anthracite section, at Hazleton, Pa., the bituminous industry was well represented also, and the two groups found much common
Jan 1, 1932
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A Novel Oxidant For Nickel HydrometallurgyBy E. A. Devuyst, M. A. Mosoiu, V. A. Ettel
Nickelic hydroxide is an important metallurgical reagent used for precipitating cobalt from nickel sulfate solutions. Existing methods of preparation of nickelic hydroxide involve electrolytic oxi
Jan 1, 1981
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Choosing Ore Feeders For Beneficiation PlantsBy O. W. Walvoord
A Definition: An ore feeder is a mechanical device that, by virtue of its motion, causes ore to be supplied or carried forward at a desired metered rate to other milling equipment. From the vi
Jan 2, 1955
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Institute Reports for the Year 1927Secretary Membership Committee Increase of Membership Papers and Publications Committee Library Committee Treasurer Report of the Secretary TO THE BOARDOF DIRECTORASN D THE MEMBEROS F THE AMERI
Jan 1, 1928
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Coal - Automatic Ash Determination for CoalBy J. G. Balkestein, J. W. R. Baerts
During an attempt to develop a method for accurate, rapid, continuous analysis of ash content of wal, the Dutch State Mines Laboratory found that the absorption coefficient for X-rays was related to a
Jan 1, 1962
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A New Era for Mineral ProcessingBy D. W. Fuerstenau
The United States is rapidly approaching an acute shortage of minerals. According to some observers, this situation may even be more severe than the energy crisis because the US consumes nearly 30% of
Jan 11, 1975
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Coal Looks Secure For The SeventiesBy Richard L. Gordon, Charles J. Johnson
Electric power demand doubles about every ten years, and because of the associated burgeoning fuel requirements, power stations absorb over half of the coal output in the United States. Throughout the
Jan 1, 1971
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Middle Management Training For Mining EngineersBy John Fayerweather
Here is a challenge to industry to meet the need for management training for the men now passing from essentially technical work into managerial responsibility . . . And a program to handle the job.
Oct 1, 1956
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Gold Milling Developments in Northern OntarioBy William F. Boericke
KIRKLAND LAKE and Porcupine in 1931 accounted for more than $41,625,000 of Ontario's total gold production of $43,117,688. For the first time, the younger camp surpassed the older in gold output,
Jan 1, 1932
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Geochemical Prospecting for Gold in AlabamaBy John B. Gustavson, Thornton L. Neathery
A geochemical survey was conducted in the gold district in Alabama. Eight old mines were found to be sufficiently large in tenor and tonnage to be economical today. Four of these appeared to be amenab
Jan 1, 1977
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Method for Evaluating Flotation Kinetics ParametersBy P. Somasundaran, I. J. Lin
There are several methods described in the literature for the determination of the order and the rate constant for the flotation of minerals. These often involve some type of computational or graphica
Jan 1, 1974
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Southern High-volatile Coals for MetallurgicalBy Howard Eavenson
PRIOR to 1907 nearly all coke was made in beehive ovens, and most of the gas produced was made in the old-style gas retorts, and while there were a few coke plants in southern West Virginia, southwest
Jan 1, 1932
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Mass Balance Calculations For Comminution CircuitsBy J. W. White, J. M. Richardson
Mass balance calculations on industrial grinding circuits are routinely performed during circuit design as well as during post-installation evaluation of operating circuits. Though such routine mass b
Jan 1, 1982
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Plan for Settlement of Labor DisputesBy AIME AIME
THE Industrial Conference appointed by President Wilson has presented the following tentative plan for preventing or retarding strikes and industrial conflicts by proposing new Federal machinery for t
Jan 1, 1920
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Rules for Interpretation of Bylaws, AIMEThe following rules, upon approval by the Board of Directors, shall serve as guides in the practical applications of the Bylaws for the operation of the Institute and have the full power and effect of
Jan 1, 1960
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Electrical Apparatus For Surface Mining OperationsBy E. C. Rien
When the electrical system for a surface or open pit mine is designed, four major considerations should be satisfied in the following order: safety, reliability, flexibility, and cost. Careful plannin
Jan 1, 1968