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  • SME
    Mineralogical Evaluation Of The Effect Of Reclamation Processing Variables On Chemical Foundry Sand

    During foundry sand reclamation process development, molds formed from reclaimed chromite sand showed a rapid decline in tensile strength during thermal cycling tests. Because this characteristic coul

    Jan 1, 1993

  • SME
    Mercury Content Of Soils As An Ore Guide In The Pachuca-Real Del Monte District, Hidalgo, Mexico ? Summary And Conclusions

    By G. H. Friedrich

    The distribution of mercury in soils, rocks, and ore was studied in three areas of the Pachuca-Real del Monte District: (1) An area north of the town of Pachuca where ore veins have been found at or n

    Jan 1, 1965

  • SME
    Evaluation Index System of Green Surface Mining in China "Mining, Metallurgy & Exploration (2020)"

    By QINGXIANG CAI, Lin Li, PENG LIU, IZHAR MITHAL JISKANI, XIANG LU, Wei Zhou, YONGLI ZHOU

    The concept of green mining is to improve the mining industry in a holistic way so that it is safe, efficient, and environmentally sustainable. The purpose of this study was to develop an evaluation i

    May 26, 2020

  • SME
    Toledo Waterways Initiative—Completion of an 18-Year LTCP Program - RETC2021

    By Leo Gentile, David Selhorst

    The $528 million Toledo Waterways Initiative (TWI) was implemented by the City of Toledo in 2002 and completed in August 2020. Toledo is one of many US cities required to implement a Long-Term Control

    Jun 13, 2021

  • SME
    Synthetic Quartz Crystal - A Review (4d222b27-2d26-4275-a6ef-417772e1b076)

    By P. R. Hervey

    Quartz is the second most widely used electronic material, with approximately 3,000 tons of single crystals used each year. Virtually all of this material is synthetic; grown with a technique called h

    Jan 1, 1999

  • SME
    Roof Bolting Patterns At The Four-Way Entry Intersections

    By Syd S. Peng

    According to accident statistics (l, 2), roof fall accidents occur quite frequently at the intersections of underground? openings and account for up to 30% of the roof fall fatalities. But this figure

    Jan 1, 1978

  • SME
    Part I - Mining And Processing At Lac D'Amiante Du Quebec, Ltee - Part I - Mining - Introduction

    By Clément F. Bernier

    One of the chief sources of the world's supply of asbestos lies in a belt of ultrabasic rocks which runs northeastward through an area called the Eastern Townships, south of the St. Lawrence Rive

    Jan 1, 1984

  • SME
    Continuous Coke Production On A Water-Cooled Grate Stoker

    By R. J. Grace

    Carbon in the form of coke is used as a reactant in various chemical and metallurgical processes, The high cost of by-product coke along with its periodic lack of availability and high investment nece

    Jan 1, 1958

  • SME
    Electric Hydraulic Power For Small Underground Mines

    By Alfred G. Hoyl

    The author, in exploring a virgin area vertically in two known ore shoots requiring decline shaft sinking, drifting, crosscutting and diamond drilling, chose to use electric, electric hydraulic, and d

    Jan 1, 1984

  • SME
    Mineralogical Characterization Of Products From A Smelting Reduction Ironmaking Pilot Plant

    By J. W. Cash

    The mineralogy and textures of cyclone dust, sludge, and occasional build-ups in the American Iron and Steel Institute (AISI) direct iron making pilot plant at Universal, Pennsylvania have been studie

    Jan 1, 1995

  • SME
    Wear Patterns And Prediction Of Disc Cutter Consumption For Tunnel Boring Machines

    By C. Frenzel

    Tunnel boring machines (TBM) utilize disc cutters as the primary means for excavating hard rock. Depending on rock excavatability and rock abrasivity disc cutters can exhibit significant wear. A detai

    Jan 1, 2011

  • SME
    Numerical Modeling of a Flooded-Bed Dust Scrubber Integrated into a Longwall Shearer "Mining, Metallurgy & Exploration (2020)"

    By Thomas Novak, Sampurna Arya, Joseph Sottile

    Dust generation and its dispersion in a longwall mine pose significant health and safety issues. The concern is prominent at both the working face, where coal excavation exposes workers to high dust c

    May 26, 2020

  • SME
    RockVision3DTM Applications to Delineate Hazardous Geologic and Stress Conditions in Coal Mines-Case Histories

    By K. Hanna

    Early identification of adverse geologic conditions and high stress concentrations during the high-speed extraction of coal using modern mechanized long wall systems is a major challenge facing the mi

    Jan 1, 1999

  • SME
    Emission Control Options For Mine Diesels

    By R. W. Waytulonis

    New exhaust control techniques and devices may be necessary to meet future diesel particulate matter emission standards in underground coal mines. This paper reviews conventional work practices and de

    Jan 1, 1990

  • SME
    TBM Excavation Through Pre-Existing Tie-Backs—Ship Canal Water Quality Project (SCWQP) - NAT2024

    By Francesco Chiappalone, Franco Gasperin, Fabrizio Fara

    This document describes the challenging task of mining through tiebacks using a 21'-8" diameter Tunnel Boring Machine (TBM) as part of the Ship Canal Water Quality Project. The mining operation involv

    Jun 23, 2024

  • SME
    Using Bucket Force/Torque Feedback For Control Of An Automated Excavator (6bf850aa-88b7-4262-b38b-f6271f506143)

    In this paper, we present design and implementation details of a fuzzy-behavior-based controller for an automated excavator. This robotic excavator must be equipped with sensors, actuators and an embe

    Jan 1, 1996

  • SME
    Angle Bolts Control Rib Side At No. 4 Mine, Brookwood, Alabama

    By Michael Gauna

    A high seam geologic condition exists at Jim Walter Resources No.4 mine which requires immediate rib support after a continuous miner cuts a place, High seam mining heights are typically 2.4 to 2.6 m

    Jan 1, 1983

  • SME
    Critical Surface Tensions Of Wetting Of Low Surface Energy Minerals And Their Separations By Gamma Flotation: Realgar, Talc, Stibnite And Sulfur

    By M. Yekeler

    The critical surface tension of wetting values (Ye) of realgar (AsS), talc [Mg3si401o (OH) 2]' stibnite (Sb2S3), and sulfur (S) were determined by flotation in the absence of conventional flotati

    Jan 1, 1994

  • SME
    Influence of blasting techniques on open pit economics

    By H. G. Naidu, Raj K. Singhai, S. P. Singh

    Introduction The economics of open-pit mining de¬pend heavily on the cost of overburden removal. It is necessary to maintain a pit slope as steep as possible. Steeper slopes lower the volume of overb

    Jan 1, 1989

  • SME
    Improving Workplace Environment of a Deep Underground Coal Mine with Multiseam Workings: An Alternative Approach

    By J. K. Pandey, ebashish Mishra, D. P. Mishra, N. K. Mohalik, S. K. Ray

    The increasing demand for coal and depletion of shallow depth reserves are pushing towards deeper mining. In deeper coal mines with multiseam workings, the problem of ventilation surges many folds pri

    Jun 2, 2022