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  • NIOSH
    OFR-168-84 Geostatistics For Resource, Reserve Estimation

    By Luis v. Coppa

    Since its inception in 1910, the Bureau of Mines has been the principal Federal agency involved in ore reserve estimations, using such traditional methods as polygons of influence and variations of in

    Jan 1, 1984

  • NIOSH
    Using An Anemometer To Measure Gas Flow From Pipe Outlets - Objective

    Provide the mining industry with a simple, accurate and readily available means of measuring the gas flow from pipe outlets such as gob holes Approach The Bureau of Mines conducted laboratory s

    Jan 1, 1987

  • DFI
    Geojet®-Turbojet® - A Deep Mixing Method For The Solution Of Geotechnical Problems

    By Maurizio Siepi

    The realisation of most of the civil engineering works is subordinate to the execution of consolidation works, in order to improve the soil physical-mechanics characteristics. The works classifiable w

    Jan 1, 2002

  • CIM
    K-Ar and Rb-Sr dating and the genesis of tungsten at the Clea tungsten skarn property, Selwyn Mountains, Yukon Territory

    By K. M. Tompson, R. L. Armstrong, C. I. Godwin

    "Tungsten skarn deposits on the Clea property in the Selwyn Mountains, Y. T., are related genetically to a quartz monzonite stock, about 500 metres in diameter at the surface. Lower Paleozoic sediment

    Jan 1, 1980

  • AUSIMM
    Proposed workflows for portable X-ray fluorescence and near infrared instruments for soil and drill hole sampling

    By N H. Jansen, H L. Bridgwater

    Field portable X-ray fluorescence (XRF) and near infrared (NIR) instruments are proven technologies in the minerals industry. The in-field results of these instruments can add value early in the proje

    May 9, 2017

  • SME
    Moon Creek Reclamation Project Creative Solutions For An Historic Mine Site

    By B. A. Ridolfi, S. M. Alvarez

    The Moon Creek Reclamation Project provides a case study in the development of creative cleanup solutions for an abandoned lead and zinc mine and mill site located in northern Idaho. Innovative design

    Jan 1, 1999

  • NIOSH
    RI 7749 Sulfatization-Reduction Of Manganiferous Iron Ore

    By F. E. Joyce

    This paper describes the development of a process for producing manganese and iron pellet concentrates from low-grade manganiferous iron ores of the Cuyuna range by a two-stage sulfatization-reduction

    Jan 1, 1973

  • CIM
    Applications of fracture mechanics in failure analysis case studies

    By M. N. Bassim, W. W. Tennese

    "Concepts of linear elastic fracture mechanics were applied to study two cases of failure, namely an equalizing beam from a tandem rear axle of a highway tractor unit and the main beam of a flat bed t

    Jan 1, 1985

  • SME
    Investigation Of The Effects Of Various Water Mediums On Desulfurization And Deashing Of A Coal Sample By Flotation

    By F. D. Ayhan

    The aim of this study was to investigate the effects of various water mediums on desulfurization and deashing of a coal sample using flotation. For this purpose, experimental studies were conducted on

    Jan 1, 2009

  • SAIMM
    Characterisation studies of Tectonised Clay shales and implications in the excavation of large size tunnels

    By Marco Barla, Mariacristina Bonini, Giovanni Barla

    ABSTRACT: The paper describes the characterisation studies of Tectonised Clay Shales at laboratory and in situ scale. The interest relates to tunnelling under squeezing and swelling conditions, in Ita

    Jan 1, 2003

  • AUSIMM
    The Effect of Sodium Chloride on Bacterial Leaching of Low-Grade Copper Ore

    By Madgwick J. C

    Leaching column techniques and microbiological methods have been described in detail in Madgwick and Ralph (1980) and Madgwick, Ralph and Sadler (1981).Sixty-nine kilograms of copper porphyry ore (0.4

    Jan 1, 1982

  • AUSIMM
    A New Method for Coal Pillar Design

    By KEITH BARRONI

    In the proposed criterion for coal a distinction is made between brittle and "psuedo-ductile" failure. This criterion is the basis for the development of new equations for coal pillar streng

    Jan 1, 1988

  • SME-ICGCM
    Weak Floor Stability During Perimeter Mining In The Illinois Basin Coal Mines (40fab914-2257-4efe-b587-9358b9303f41)

    By Murali M. Gadde

    Perimeter mining is a special form of very productive partial extraction method practiced at some mines in the United States. In the Illinois Basin mines where all major coal seams have weak underclay

    Jan 1, 2009

  • AUSIMM
    Industrial Minerals the South Island Potential

    Industrial minerals by definition are minerals used as part of an industrial process and usually are one of a number of components, eg finely ground Limestone is an extender in the manufacture of pain

    Jan 1, 1985

  • ABM
    ENHANCED PRODUCT QUALITY & ENERGY EFFICIENCY BY MEANS OF INTEGRATED PLANT MONITORING SYSTEM

    By Detlef Ehlert

    In view of the increasing level of cost pressure on the part of plant owners, optimized plant operation with top product quality and maintenance costs is indispensable. Unscheduled shutdowns with incr

    Aug 16, 2017

  • NIOSH
    RI 8716 Recovery of Scheelite and Byproduct Sphalerite From Western U. S. Sphalerite From Western U. S.

    By J. M. Gomes

    Bench-scale flotation tests were conducted on two western tactite ores to study the recovery of tungsten and zinc minerals. The investigation, which is part of the Bureau of Mines ongoing program to d

    Jan 1, 1982

  • SME-ICGCM
    Airbag Support for Ground Control in Thin Seam Coal Mining

    By Fan Shaogang

    In this paper, the airbags' structure and technical characteristics and its applications in China are described. Based on the practice of the airbags in mining thin seams, the effects on ground c

    Jan 1, 1997

  • NIOSH
    RI 3445 Effect Of Acid Treatment Upon The Ultimate Recovery Of Oil From Some Limestone Fields Of Kansas ? Introduction

    By R. E. Heithecker

    In Kansas, almost every oil well drilled into a limestone formation is treated with hydrochloric (muriatic) acid upon completion. This is done to increase the potential capacity of the well and thereb

    Jan 1, 1939

  • SAIMM
    Remote Mine Wide Communications

    Mine wide, underground wireless communications are possible with the use of Ultra Low Frequency (ULF) technology. Due to the propagation through rock of ULF radio signals a relatively small antenna ca

    Jan 1, 2007

  • ISEE
    Vibration Spectral Mapping

    By Gordon M. Matheson, Douglas A. Anderson, David K. Miller

    "Traditionally, analysis of vibrations from blasting has been focused on peak particle velocity fordetermining the likelihood of both annoyance and damage. The US Bureau of Mines, in RI 8507,indicated

    Jan 1, 1997