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  • SME
    Development of a Robust Ultra-Wideband Module for Underground Positioning and Collision Avoidance "Mining, Metallurgy & Exploration (2020)"

    By RALPH BALTES, AMIR EHSAN KIANFAR, FABIAN UTH, ELISABETH CLAUSEN

    As indoor positioning provides particular challenges due to the unavailability of GPS signals, various systems such as ultrawideband (UWB), radio frequency identification (RFID), ultrasound, and wirel

    Jul 31, 2020

  • SME
    Characterization of respirable coal mine dust recovered from fibrous polyvinyl chloride filters by scanning electron microscopy

    By S. Afrouz, C. Keles, E. Sarver, A. Greth

    While respirable dust monitoring has long been done on the basis of mass concentration, it is increasingly recognized that specific dust characteristics may play an important role in health outcomes.

    Oct 1, 2024

  • SME
    Stress Distribution Around A Cylindrical Opening Under Uniaxial Compression And Lateral Confinement ? Introduction

    By N. K. Bohidar

    Evaluation of the stability of a structure under given boundary conditions requires accurate knowledge of the state of stress as well as the mechanism of failure at the critical state of stress. This

    Jan 1, 1970

  • SME
    Million Dollar Grinding Mill – Is It For You?

    By Vas P. Kenyen

    Introduction Autogenous, semi-autogenous, and conventional grinding circuits are used to process ores. Current emphasis, though, is towards the use of the first two systems. The reason is the general

    Jan 10, 1984

  • SME
    Trace Element Partitioning In Coal Utilization Systems

    By A. G. Fonseca

    The effects of coal cleaning, coal combustion and flue gas particulate removal systems on the partitioning of 12 trace elements were investigated. This study was prepared to help document the fate of

    Jan 1, 1993

  • SME
    Problems Encountered In The Design And Construction Of A New Aggregate Plant ? Introduction

    By Frederick C. Moore

    This paper describes the original planning which actually resulted in the opening of a new aggregate plant located in central New York State. This plant, which is now named the Skaneateles Plant of Th

    Jan 1, 1968

  • SME
    The Risks Associated with TBM Procurement and the Next Steps toward Industry Change

    By Gary Brierley, Lok Home

    "The majority of tunnels for civil engineering applications are now being constructed using some form of mechanical excavation. Beginning in the 1960s with rock tunnel boring machines (TBM), the tunne

    Jan 9, 2018

  • SME
    Room-and-pillar panel design method to avoid surface subsidence

    By Y. Luo

    In designing and operating underground room-and-pillar coal mines, it is always difficult to achieve a good balance between preventing surface subsidence and achieving high recovery ratio. In this pap

    Jan 1, 2014

  • SME
    Anamax Mining Company Uranium Plant Design And Construction

    By E. Krist

    The newest addition to the Anamax Mining Company's Twin Buttes copper producing complex is a by-product uranium extraction plant which was placed into service in February 1980. The plant is unusu

    Jan 1, 1981

  • SME
    Temperature and Humidity Rise for 23-Person Tent-Type Mobile Refuge Alternative

    By P. Bissert, M. Klein, L. Yan, D. Yantek

    "Mine Safety and Health Administration (MSHA) regulations require underground coal mines to use refuge alternatives (RAs) to provide a breathable air environment for 96 hrs. One of the main concerns w

    Jan 1, 2016

  • SME
    The Lead-Zinc Anomaly

    By David B. Brooks

    I gratefully acknowledge the help of a number of American and Canadian geologists, in both federal surveys and in private firms, who took the time to discuss this problem with me. Hans Landsberg and B

    Jan 1, 1967

  • SME
    Solution Mining At Searles Lake, Trona, CA

    By Stephen P. Mulqueen

    Searles Lake is an evaporite basin located near the community of Trona in northwestern San Bernardino County, CA. Searles Valley Minerals Operations Inc. (SVM), a subsidiary of Nirma Limited, current

    Jan 1, 2012

  • SME
    Dielectric Properties And Numerical Modeling For Temperature Distributions In The Microwave Drying Of Fine Coal

    By I. Chatterjee

    The application of microwaves has a demonstrated potential for the ultimate removal of water from fine coal. The principle of microwave drying of fine coal is based on the selective absorption of micr

    Jan 1, 1990

  • SME
    Shaft Design Criteria ? Introduction

    By Kot F. Unrug

    When reading different studies discussing trends in coal mining, it appears that a substantial expansion of output by the year 2000 is predicted, even in the most pessimistic forecasts. Depletion of s

    Jan 1, 1984

  • SME
    Room-and-pillar panel design method to avoid surface subsidence (baff531e-1217-4963-ad11-1cde90cbd566)

    By Y. Luo

    Cuando se diseña y operan minas de carbón subterráneas con el método de cámaras y pilares, es siempre difícil obtener un buen equilibrio entre la prevención de subsidencia de la superficie y la obtenc

    Jan 1, 2014

  • SME
    Silver Metal Extraction from Refractory Silver Ore Using Chloride-Hypochlorite and Hydrochloric Acid Media Under High Pressure "Mining, Metallurgy & Exploration (2021)"

    By Cengiz Karagüzel, Ömer Canıeren

    The mobility of gold and silver metals from refractory ores is very low due to free metal ions in their bodies that bind the transportable and free metal molecules or they are encapsulated in minerals

    Jan 28, 2021

  • SME
    Development Of A Gas Monitor Simulator And Mine Rescue Contest Field Trials

    By D. W. Alexander

    Researchers from the U.S. Office of Mine Safety and Health Research (OMSHR) of the U.S. National Institute for Occupational Safety and Health (NIOSH) completed field trials during coal mine rescue con

    Jan 1, 2012

  • SME
    Monoalkyldithiocarbamates As Promoters For Copper Oxide And Carbonate Minerals

    By M. F. Werneke

    Flotation of the carbonate, oxide and silicate minerals of copper (malachite, azurite, chrysocolla) has been the subject of much research in recent years, but few effective solutions to this problem h

    Jan 1, 1977

  • SME
    Applications Of The Coal Mine Roof Rating (CMRR) For Ground Control Planning And Operations

    By W. J. Wuest

    The U.S. Bureau of Mines (USBM) has recently developed a rock mass classification system for evaluating the structural competency of bedded roof strata; the Coal Mine Roof Rating, or CMRR. When compil

    Jan 1, 1995

  • SME
    Past, Present, and Future of Cement Manufacturing and Decarbonization in the United States - SME Annual Meeting 2025

    By Duah Philip, Awuah-Offei Kwame

    Regulatory pressure to mitigate the cement industry’s environmental impact has intensified recently, spurring innovation in low-carbon cement technologies. In the United States, cement production, con

    Feb 1, 2025