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  • NIOSH
    RI 5486 Influence Of Borehole Freespace On Ignition Of Firedamp By Explosives - Summary

    By R. L. Grant

    An investigation was undertaken by the Bureau of Mines to determine the relationship between freespace and ignition probability for borehole shots. A series of experiments was concluded which covered

    Jan 1, 1959

  • AIME
    Technical Papers and Notes - Institute of Metals Division - The Deformation of Single Crystals of Aluminum

    By J. N. Roberts, K. V. Gow

    In a recent review of the field of plastic deforrnation of metal single crystals, Maddin and chenl indicated the need for systematic investigations of the crystallography of the slip process with spec

    Jan 1, 1959

  • NIOSH
    RI 5480 John Burdette Barite-Fluorite Deposit Garrard County, Ky. ? Summary

    By Kenneth M. Earl

    The purpose of this investigation was to obtain subsurface information on the John Burdette barite-fluorite deposit, Garrard County, Ky. The deposit was intersected in each of five inclined diamon

    Jan 1, 1959

  • SME
    Coal Cleaning Plant Design For Minimum Operating Labor ? Introduction

    By John D. Price

    The solution to the problem expressed in the title of this paper might well be condensed into one word, AUTOMATON, But if I were to stop there, even though most of you might applaud, I am afraid that

    Jan 1, 1959

  • NIOSH
    RI 5538 Fluorescent X-Ray Spectrographic Analysis: Studies Of Low-Energy K, L, And M Spectral Lines ? Summary

    By William J. Campbell

    These investigations were undertaken as part of a program to determine the optimum X-ray spectral lines to use for analyzing the wide variety of samples received by the X-ray Laboratory. Theoretical c

    Jan 1, 1959

  • AIME
    Technical Note - Beneficiation Of Autunitic Ores

    By William C. Aitkenhead, John A. Jaekel

    Uranium deposits in the Spokane Indian Reservation, as well as those around Mt. Spokane, are essentially low grade, much of the ore containing less than 0.2 pct U808. The Mining Experiment Station of

    Jan 1, 1959

  • SME
    Ammonium Nitrate Blasting Agents

    By Louis W. Towle

    A brief history of the use of Ammonium Nitrate in explosives and blasting agents is given. Methods of manufacture and physical properties of the various types of Ammonium Nitrate are given with partic

    Jan 1, 1959

  • AIME
    Geology - Lineament Tectonics and Some Ore Districts of the Southwest

    By Evans B. Mayo

    This study examines the structural framework of the Southwest for evidence of the four principal trends of lineament tectonics. It attempts to classify their intersections and compares the positions o

    Jan 1, 1959

  • NIOSH
    RI 5459 Volatilization Of Tin Chloride From Bolivian Slimes ? Summary

    By K. K. Kershner

    The purpose of this investigation was to develop methods, on a laboratory scale, for recovering tin from Bolivian metallurgical slimes. Petrographic and chemical analyses were made of slime ore fracti

    Jan 1, 1959

  • AIME
    Technical Papers and Notes - Extractive Metallurgy Division - The Improved Wheaton-Najarian Vacuum Condenser

    By H. K. Najarian

    This paper describes recent development work on the Wheaton-Najarian Vacuum Condenser for Zinc at Josephtown Zinc Smelter, wherein, to dissipate the heat of condensation, the "airlift" action of gases

    Jan 1, 1959

  • NIOSH
    RI 5436 Some Thermodynamic Properties Of Fluorphlogopite Mica ? Introduction And Summary

    By K. K. Kelley

    Synthetic fluorphlogopite mica (KMg3AlSi3010F2) is a relatively new product developed at the Norris (Tenn.) Station of the Bureau of Mines, Thermodynamic data have applications both in the production

    Jan 1, 1959

  • NIOSH
    RI 5467 Duplicability Studies Of The BM-AGA Test Method And Correlation With Industrial Coking - Introduction

    By J. G. Walters

    In a survey of the coking properties of United States coals, the Bureau of Mines has accumulated data on more than 500 coals and blends tested by the Bureau of Mines-American Gas Association (BM-AGA)

    Jan 1, 1959

  • CIM
    Drilling Mud Filtration and Its Effect on the Electrical Resistivity of -Porous Media

    By H. T. Kennedy, D. L. Flock

    "The project described in this pa-per was undertaken to provide a more thorough understanding of the effect of contamination by drilling fluids on the electrical properties of porous systems. The basi

    Jan 1, 1959

  • AIME
    Technical Papers and Notes - Institute of Metals Division - The Effect of Oxygen on the Impact Transition of Iodide-Titanium

    By E. H. Rennhack

    THE presence of sufficient quantities of the inter- stitial elements, carbon, oxygen, and nitrogen is known to decrease sienificantly the room-temperature impact resistance of titanium. Hydrogen does

    Jan 1, 1959

  • NIOSH
    IC 7934 Coke Plants In The United States On December 31, 1958 ? Summary And Introduction

    By Joseph A. DeCarlo

    This publication presents statistical data on oven-and beehive-coke plants in the United States. Information on the carbonizing capacity of the coke industry is important because of the close relation

    Jan 1, 1959

  • SME
    Problems And Developments In Mineral Beneficiation

    By Norman Weiss

    The purpose of this paper is to relate progress in the engineering field called Minerals Beneficiation to undergraduate and graduate education in our colleges and universities. So mach has been writte

    Jan 1, 1959

  • NIOSH
    IC 7903 Mining Methods And Costs, Baguio Gold Mine, Baguio Gold Mining Co., Baguio, Luzon, Philippine Islands ? Introduction And Summary

    By A. A. Bakewell

    This information circular, which describes mining methods and practices at the Baguio Gold Mining Co., Philippine Islands, is one of a series being prepared by the Bureau of Mines on mining methods, p

    Jan 1, 1959

  • AIME
    Discussion - Institute of Metals Division

    H. H. Bleakney (Dept. of Mines and Technical Surveys, Ottawa, Canada)— The work of Dr. Machlin and his colleagues at Columbia University is so scholarly that one hesitates to take issue with them. Nev

    Jan 1, 1959

  • AIME
    Discussion of Papers Published Prior to 1958 - Mineralizing Solutions That Carry and Deposit Iron and Sulfur

    By B. S. Butler

    A. D. Mutch (Falconbridge Nickel Mines Ltd., Ona-ping, Ontario)—This contribution is prompted by the fact that the writer has recently published an article'!' which has in part the same gene

    Jan 1, 1959

  • AUSIMM
    Presidential Address, 1959

    A President, soon after he is appointed, sees looming ahead of him the Presidential Address; and in something approaching despair wonders what he can possibly talk about which might hold the interest

    Jan 1, 1959