Search Documents

  • CIM
    Stratified Sampling of Drill Core

    By Norman O. Lotter

    Drill core is preferred as the sample material for metallurgical and mineralogical characterisation and flowsheeting of an orebody. The question arises as to how to do this at the economic optimum, si

    Jan 1, 2010

  • NIOSH
    OFR-22-72 Evaluation Of Anemometers For Use In Coal Mines - I. Introduction - A. Background

    By J. F. McCoy

    The quantitative determination of the mass rate of flow of methane in an underground airway is calculated as the product of the methane concentration and the air flow rate. Velocities are taken at sev

    Jan 1, 1972

  • SME
    Silver In Transition ? Introduction

    By Mark E. Emerson

    1967 will be remembered as the year the world realized it was running out of silver. In May of this year a new era in tin the history of the white metal was begun as the power of the U.S. Treasury to

    Jan 1, 1967

  • AUSIMM
    The State of Sampling Practice in the South African Minerals Industry

    The state of sampling practice in South African minerals industry must be appreciated in the context of the changes that the country has recently lived through. These include the entrepreneurship and

    Mar 1, 2010

  • SME
    The Use Of Instrumented Split-Set Rock Bolts To Monitor Strain In The Walls Of A Deep Underground Mine Stope

    By F. Maciosek, D. Denton, J. Johnson

    Researchers from the Spokane Research Laboratory of the National Institute for Occupational Safety and Health and personnel from Coeur Silver Valley, Wallace, ID, conducted tests using rock strain st

    Jan 1, 2004

  • SME
    Pregrouting in Rock: Contemporary Basic Principles

    By Donald A. Bruce

    Pregrouting is an extremely important part of many rock tunneling projects. However, poor and unsatisfactory performances have been frequently recorded often with very severe consequences, technically

    Jan 1, 2005

  • AIME
    New York Paper - Austenite and Austenitic Steels

    By John A. Mathews

    It is a great honor to be asked by the Board of Directors of this Institute to deliver the Henry Marion Howe lecture. The invitation carries with it a great responsibility, which I accept with conside

    Jan 1, 1925

  • CIM
    Development of New Frothers through Hydrodynamic Characterization of Frother Chemistry

    By J. A. Finch

    "Much progress has been made over the last several years in the ability to measure flotation cell hydrodynamic parameters in both the laboratory and plant. These techniques have allowed fundamental re

    Jan 1, 2007

  • SME-ICGCM
    Roof Control Analysis In North River Mine

    By Mike Watts

    Since the first longwall panel development started in the new mining, (Southern) area, a number of roof falls have occurred in L1 and L2 gate-entries. The longwall was delayed for a total of two month

    Jan 1, 2000

  • NIOSH
    IC 8380 United States Coals In World Markets

    By George Markon

    The importance of United States coal exports as a component of the national economy, the potential for growth of these exports, and the inter-national character of this sector of the coal industry are

    Jan 1, 1968

  • AIME
    Part VI – June 1968 - Papers - An Electron Microscope Investigation of Explosion-Bonded Metals

    By Lucien F. Trueb

    The microstructure of explosion-bonded pairs of similar and dissimilar metals has been investigated by electron microscopy. A review of the specific problems encountered and the methods used for obtai

    Jan 1, 1969

  • CIM
    The economics of diamond projects in the Canadian Arctic (bbedb282-085a-4c62-8fa2-4245fef0430a)

    By W. Bullen

    A hypothetical economic model has been developed for diamond projects in the Canadian Arctic using data from recent exploration and mining projects. The model reflects economic conditions applicable t

    Jan 1, 2006

  • NIOSH
    IC 6465 Zircon The Gem

    By E. P. Youngman

    From a scientific point of view , the zircon is by far the most remarkable of the gem stones , and a satisfactory solution of the problems offered by its characters and constitution has not yet been m

    Jul 1, 1931

  • AIME
    Notes on Ruff's Carbon-Iron Equilibrium Diagram.

    By J. E. Johnson

    Discussion of the paper of Prof. Henry M. Howe, presented in abstract by Bradley Stoughton at the Cleveland meeting, October, 1912, and printed in Bulletin No. 71, November, 1912, pp. 1181 to 1227. J

    Dec 1, 1912

  • AIME
    Bougainville's EDP Techniques Up Mine Productivity, Simplify Planning

    By H. David Swain

    On Bougainville Island in Papua New Guinea, Bougainville Copper Ltd. (BCL) has successfully applied electronic data processing (EDP) techniques to pit operations and mine planning. Though the EDP prog

    Jan 3, 1979

  • NIOSH
    OFR-68-73 EM Location System Prototype And Communication Station Modification (3f90e3fe-7df3-4a30-87c7-cb58a9840560)

    A prototype EM Location System was fabricated and tested at the Geneva Mine near Dragerton, Utah. This system consisted of six manpack transmitters and six manpack receivers covering the frequency ban

    Jan 1, 1973

  • CIM
    An Improved Definition of Rock Quality Designation, RQDc

    By L. Li

    The rock quality designation (RQD) was initially introduced by Deere (1963) for civil engineering. But, its application has been largely extended to rock mechanics and has become a fundamental paramet

    May 1, 2009

  • TMS
    Native Metals

    By Fathi Habashi

    While it is commonly known that the precious metals and to some extent copper occur in the native state, it is less known that mercury, iron, nickel, and cobalt do occur also in the native state; the

    Jan 1, 1993

  • CIM
    Frother Analysis: Procedure and Plant Experiences

    By James A. Finch, Stéphanie Gélinas

    "A colorimetric technique, originally developed for methyl iso butyl carbinol (MIBC) based on the Komarowsky reaction, has been extended to a wide range of common mineral flotation frothers. The proce

    Jan 1, 2007

  • NIOSH
    MLA 9-90 - Mineral Appraisal Of The White River National Forest, Colorado

    By S. Don Brown

    Between 1987 and 1988, the Bureau of Mines studied the mineral resources of the White River National Forest and part of the Arapaho National Forest to appraise the resources present and to determine t

    Jan 1, 1990