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  • SME
    A Rock Mass Classification Scheme For The Planning Of Caving Mine Drift Supports

    By Z. T. Bieniawski, E. H. Skinner, R. A. Cummings, F. S. Kendorski

    INTRODUCTION Caving Mine Drift Support Design The support of production drifts remains a high-cost item facing the developer or operator of an underground caving mine. Support costs are incurre

    Jan 1, 1983

  • SME
    Using lean six sigma techniques for projects at a Canadian uranium mine, mill

    By S. G. Britton

    "Strategies to improve performance in mining production, maintenance and mineral processing operations have evolved over time from straightforward time studies of individual machine performance in the

    Nov 1, 2016

  • SME
    Analysis of Hydro-fracturing Technique Using Ultra-deep Boreholes for Coal Mining with Hard Roofs: a Case Study "Mining, Metallurgy & Exploration (2021)"

    By Wenjun Ju, Xiaodong Sun, Jianwei Zheng, Bingding Yi, Zhaorui Ma, Pengfei Jiang, Lingfu Zhu, Yangfa Zheng

    The presence of hard roof poses a significant threat to the safety of underground coal mining. In this study, a mechanical model is established for underground stopes to analyze the overburden structu

    Nov 2, 2020

  • SME
    New Tricks For An Old Elephant: Revising Concepts Of Coeur D'Alene Geology (03a4e59b-1c67-417e-b15b-710e19186461)

    By B. G. White

    Traditional interpretations of vein ore deposits in the Coeur d' Alene Mining District, such as the view that these deposits formed in a transcurrent tectonic regime during the Precambrian, are b

    Jan 1, 1998

  • SME
    The Factorial Model As A Way Of Thinking About The Results Of A Multi-Factor Lab Experiment Or Plant Trial

    By F. Bruey

    The Factorial Model Experimenters are often interested in systems that are multi-factorial. A multi-factorial system is one whose output is believed or known to be dependent on the particular setti

    Jan 1, 2007

  • SME
    Thoughts on the Responsibility of Geotechnical Engineers and Hydrogeologists in Mining (66e9fdf6-1d88-467f-84a5-f320f0c178c6)

    By R. J. Sheets

    "INTRODUCTION What is the primary responsibility for geo-engineers in mining? Early in my career, I was asked this question by an experienced engineer. After explaining some various tasks, I was infor

    Jan 1, 2018

  • SME
    Updated Study of a Low Overburden Longwall Recovery with Pre-Developed Recovery Entry

    By J. C. Stankus, R. Ochsner, B. Hanson

    "Bull Mountains No. 1 mine of Signal Peak Energy made another success in its 4 Right pre-developed recovery entry on March 23 and 24, 2015, after the first successful cut-through and shield retrieval

    Jan 1, 2016

  • SME
    Release Of Heavy Metals From Sulfide Flotation Tailings Under Deepwater Discharge Environments

    By H. K. Lin

    Deepwater discharges of sulfide flotation tailings have been practiced for several decades. Oxygen penetration and organic matter content in such environments are the two major factors that determine

    Jan 1, 2009

  • SME
    The Uranium Boom In Namibia - Rise Of A New Giant. - Will Namibia Remain A Stable And Secure Supplier For The World's Demand On Nuclear Fuel? - Introduction

    While there have always been mining activities on the outcrops of the copper deposits around Tsumeb, large scale mining activities in Namibia only started in colonial times. Originally focusing on the

    Jan 1, 2011

  • SME
    Extraction Of Bitumen From Utah Tar Sands By A Hot Water Digestion -Flotation Technique

    By J. E. Sepulveda

    Tar sand deposits in the. Stare of Utah contain more than 25 billion barrels of in-place bitumen, Although thirty times smaller than the well-known Athabasca tar sands, Utah tar sands do represent a s

    Jan 1, 1978

  • SME
    Equipment Cost Reporting By Major Component Analysis And Frequency Distribution

    By Lorraine Brandt Yde

    This paper describes development of a cost report that is descriptive, logically oriented, and concise. Since the costs involved relate to mining, this reporting technique could help bridge any possib

    Jan 1, 1971

  • SME
    Tunnel Interaction: Hydraulic, Mechanical, And Hydromechanical Approach

    By John Kinneen, Sunghoon Choi, Arne Fareth, Edward S. Barboe, Kyle R. Ott

    A new water treatment plant is to be constructed for a portion of the water supply system of New York City. The project includes construction of new water conveyance tunnels crossing perpendicular and

    Jan 1, 2007

  • SME
    Design of the University Link Tunnels and Stations

    By Daniel N. Adams

    The University Link project extends Seattle?s light rail from downtown to University of Washington (UW). It includes 5.0 kilometers (3.15 miles) of twin-bored, 6.4 meters (21 feet) excavated diameter

    Jan 1, 2008

  • SME
    Microtunneling to the Rescue: Increasing Capacity and Replacing Aging Interceptor Sewers Due to Rapid Growth in Irving, Texas - NAT2024

    By Amanda Powers, Brian Glynn, Robert Sauceda, Daniel Huffines, Mike Garbeth

    This paper will review the evaluation performed for the Cottonwood & Hackberry Creek Wastewater Interceptor Improvements Project to replace two separate aging and undersized interceptor sewers by eith

    Jun 23, 2024

  • SME
    A New Approach To Fine Solids Dewatering

    By C. St. J. Lowe

    Weir Minerals ? Linatex has developed a new approach to the dewatering of fine solids, particularly mine and process plant tailings and wastes. The Weir process, patented in 2009, uses standard proce

    Feb 23, 2014

  • SME
    Concentration of High-Sulfur Copper Ore Using a Three-Product Magnetic Flotation Column

    By Rongdong Deng

    A tower-like magnetic system comprising eight permanent magnets was installed at the center of a flotation column to separate chalcopyrite and pyrrhotite minerals. A cyclonic flotation was installed w

  • SME
    A Review Of Tunneling Difficulties In Carbonate Sedimentary Rocks

    By D. P. Richards

    Tunneling in carbonate sedimentary rocks such as lime stones and dolomites can be difficult when solution channels or voids are anticipated. Addressing the risk aspects associated with these formation

  • SME
    A Risk Analysis Method for Estimation of Financial Benefits of the Existing Mine Ventilation System "Mining, Metallurgy & Exploration (2020)"

    By Nasser Madani, Yerbol Tussupbekov, Sergei Sabanov, Zarina Mukhamedyarova

    A case study was conducted on a metal mine operating in Kazakhstan, in which problems were associated with use of a complicated and outdated ventilation system and its high expenses. The mine needs to

    Jun 3, 2020

  • SME
    Water Tunnel Beneath New York Harbor

    By Mohammad R. Jafari

    The Camp Dresser & McKee (CDM)/Hatch Mott MacDonald (HMM) joint venture has been engaged by the New York City Economic Development Corporation (NYCEDC) to provide engineering ser-vices in connection w

    Jan 1, 2008

  • SME
    Metrorail's Dual Chamber Rock Tunnel Station--Two Can Be Simpler Than One

    By Charles W. Daugherty

    INTRODUCTION The Washington Metropolitan Area Transit Authority's (WMATA's) rapid transit system, Metro, ultimately will comprise 162.5 km (101 miles) of line divided among 10 routes. As

    Jan 1, 1981