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  • SME
    Contract Mining and its Role in Gold Mine Development

    By W. Joseph Schlitt, Donald B. Swanson

    The paper provides an overview of the role that contract mining plays in the minerals industry. Particular emphasis is on contract mining and its place in the development and operation of small to med

    Jan 1, 1987

  • SME
    Developing The Simon Silver Mine

    By Walter N. Campbell

    The Simon Silver Mine is located near Mina, Nevada, approximately 50 miles northwest of Tonopah and 40 miles east of Hawthorne. It is an old property which was last worked in 1932 and closed operation

    Jan 1, 1967

  • SME
    Recovery Of Metal Values From Copper Slags By Flotation And Roasting With Pyrite

    By G. Bulut

    The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe were su

    Jan 1, 2007

  • SME
    Enhanced flotation separation of phosphate and dolomite using a new amphoteric collector

    By C. L. Jiang, B. K. Parekh, X. Shao

    Among the impurities present in phosphate ore, dolomite is the most difficult to remove. This is because dolomite and phosphate have similar chemical compositions and because the dissolved species of

    Jan 1, 1999

  • SME
    The Relationship Between Tunnel Convergence and Machine Operational Parameters and Chip Size for Double Shield TBMs— A Case History of Ghomroud Water Conveyance Tunnel

    By Jamal Rostami, Ebrahim Farrokh

    Selection of tunneling method, specially the use of shielded machines for application in deep rock tunnels can be heavily impacted by presence of ground convergence and squeezing conditions. Tunnel co

    Jan 1, 2007

  • SME
    Optimization of the Flotation of Low‑Grade Phosphate Ore Using DOE: a Comparative Evaluation of Fatty Acid Formulation to Sodium Oleate - Mining, Metallurgy & Exploration (2023)

    By Abdelaziz Baçaoui, Imane Aarab, Abdelrani Yaacoubi, Khalid El Amari, Abderahman Etahiri

    Phosphate ores upgraded by flotation are widely used as vital raw materials for the sustainable production of phosphate fertilizers to maintain the food supply. High-grade phosphate reserves become mo

    Dec 7, 2022

  • SME
    The Mine Management Support System: A Knowledge-Based System For Better Management Of Underground Coal Mines

    By R. L. Grayson

    Productivity achievements in underground coal mining over the past ten years highlight the improvement of management practices as well as the adoption of new technology. Research findings and results

    Jan 1, 1990

  • SME
    Planning and Designing For Mining Conservation

    By David B. Brooks, Roger L. Williams

    Control of the environment is as old as mining. Engineers have always had to consider how best to deal with the surface, and the character of the surface environment always affects mining method in so

    Jan 1, 1973

  • SME
    Modeling And Field Verification Of Roof-Bolt Systems

    By Thomas W. Smelser

    A full-scale geotechnical model of a 15-foot (4.6 m) wide coal mine entry in correlation with computer finite-element analysis (FEA) is being employed at the Bureau of Mines Spokane Research Center fo

    Jan 1, 1982

  • SME
    Processing Molybdenite Concentrate By An Acid Bake-Leach-Flotation Method

    By H. Rush Spedden

    A process has been developed and piloted to reject copper, lead, iron, phosphorus, bismuth, antimony, elemental sulfur, and insol from molybdenite concentrate without decomposing the contained molybde

    Jan 1, 1971

  • SME
    Hydrochloric Acid Leach Processes For Copper Concentrates ? Introduction

    By W. W. Harvey

    The work to be described was part of an exploratory research program directed toward identifying potentially useful but little known reactions in extractive metallurgy. In particular, the major copper

    Jan 1, 1976

  • SME
    Evaluation Of Design And Performance - Porter Square Transit Station Chamber Lining

    By David E. Thompson, Andrew F. McKown, Herbert H. Einstein, Amr S. Azzouz

    INTRODUCTION Design of supports for underground chambers in rock has undergone considerable development. This becomes evident when comparing support dimensions of subway station caverns built in th

    Jan 1, 1983

  • SME
    A New Method To Correlate Radiometric And Chemical Assay Values In Uranium Deposits - Introduction

    By Michel Dagbert

    With the growing demand for energy, explora¬tion for uranium deposits has dramatically increased in the past few years. Since the early ages of uranium exploration, natural gamma ray logs has proved f

    Jan 1, 1979

  • SME
    Carbonatites: An Important Source For Space-Age Materials

    By D. P. Gold

    Major sources and reserves of Cb/Nb, Ta, REE, Y, Sc, Zr, Hf, Cu, apatite and vermiculite may be concentrated in primary and secondary minerals associated with different stages and depths of emplacemen

    Jan 1, 1991

  • SME
    Routine Mineral Composition Characterization By Electron Microprobe Applied To Base And Precious Metal Exploration

    By Erich U. Petersen

    Chemical zoning studies of mineralization can be useful in guiding exploration efforts. They permit one to determine the limits of mineralization and to correlate mineralized intervals in drill holes.

    Jan 1, 1991

  • SME
    A review of digital transformation in mining (MME Extended Abstracts)

    By Pratt Rogers, Aaron Young

    This paper considers the mining industry’s need for digital transformation (DT) and presents a three-part review of the foundational components of the DT process: ubiquitous data, connectivity and dec

  • SME
    Wolframite Flotation With Chelating Collector And Neutral Oil Synergist

    By Weibai Hu

    The flotation separation of wolframite from fluorite and quartz is investigated with chelating agents and neutral oil as synergic collectors. Test results indicated that a-nitroso-ß-naphthol has a str

    Jan 1, 1985

  • SME
    Novel Flocculants For The Treatment Of Oil Sand Tailings

    Two new inorganic-organic hybrid polymers, Al(OH)3-polyacrylamide (Al(OH)3-PAM) and Mg(OH)2-polyacrylamide (Mg(OH)2-PAM) were synthesized and successfully applied for the treatment of oil sand tailing

    Jan 1, 2012

  • SME
    Electrochemistry Of Pyrite And Its Significance In Sulphide Flotation

    By H. Majima

    In spite of the importance of the presence of pyrite in the flotation of sulphide ores, not many studies have been made from the electrochemical point of view. It is generally recognized that the oxid

    Jan 1, 1971

  • SME
    Mine Preplanning

    By Christopher J. Bise

    INTRODUCTION Before a mine is planned in detail, a preliminary analysis is often conducted. This preplanning permits the mining engineer to make a rapid assessment as to whether or not a particula

    Jan 1, 1986