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  • SME
    Subsidence Monitoring Over Western Coal Mines

    By Frederick K. A1lgaier

    The Bureau of Mines' Denver Research Center initiated a subsidence research program in 1978. The short ten goals of the program were to determine practical methods and equipment for measuring sub

    Jan 1, 1982

  • SME
    Technical Considerations For The Design And Construction Of Mine Seals To Withstand Hydraulic Heads In Underground Mines

    By D. T. Kirkwood

    The practice of impounding mine water and liquid fine waste in underground mines is increasing. Often these underground impoundments are created by constructing seals or bulkheads designed to withstan

    Jan 1, 1995

  • SME
    Reagglomeration Phenomena In Fine Grinding Of Coal

    By E. Kaya

    Investigations of fine grinding of bituminous coal in a laboratory-scale pulverizer are described. The results indicate essentially "normal" breakage behavior at relatively coarse sizes (greater than

    Jan 1, 1996

  • SME
    Laboratory Assessment Of Rock Fragmentation Process By Continuous Miners

    By V. B. Achanti

    Laboratory studies were carried out at West Virginia University to investigate the rock fragmentation mechanism by continuous miners using an automated rotary cutting simulator. The primary factors in

    Jan 1, 1997

  • SME
    Queens Segment, East Side Access Project, New York

    By Bernie W. Martin, Jesus Schabib

    The East Side Access (ESA) Project in New York will be the largest tunneling project ever undertaken by a US railroad. The objective of the ESA project is to connect the Long Island Rail Road (LIRR) M

    Jan 1, 2001

  • SME
    A Review Of Claims Data--Illinois Mine Subsidence Insurance Fund October 1979 To October 1985

    By Edmund W. Murphy

    At the first workshop on Surface Subsidence Due to Underground Mining (1 981 ) , Yarbrough delivered a paper (1 ) describing the mine subsidence insurance program in Illinois operated as the Illinois

    Jan 1, 1986

  • SME
    Plant Waste and Environmental Considerations

    By John G. Groppo, Bonnie Webb-Groppo

    INTRODUCTION The first portion of this chapter is concerned primarily with the contamination aspects of fine coal cleaning that include both the solids and water discharged as waste products after c

    Jan 1, 1991

  • SME
    New Japanese Technology For Economic Dredging Of Industrial/Mining Waste Ponds To Reprocess Materials

    By Peter Van deVelde

    Many companies in North America because of economic or environmental reasons are considering reprocessing material from their waste ponds. The Japanese have developed highly specialized machines and

    Jan 1, 1983

  • SME
    Numerical Simulation Of Charge Motion In Ball Mills -Lifter Bar Effect (b2ca2b2d-7baf-4bbb-98f4-343a6b226144)

    By B. K. Mishra

    This paper focuses on the use of a numerical tool known as the discrete element method (DEM) to study the motion of ball charge in ball mills (14-18 ft). DEM is employed to simulate the motion of indi

    Jan 1, 1992

  • SME
    Power Consumption Of Stirred Media Mills (29e9da19-6cb3-4160-84d7-b13daaba4241)

    Power consumption of stirred media mills has been studied by an approach developed from work on stirred reactors. Relationships between torque required to rotate both disc and pin impellers immersed i

    Jan 1, 1994

  • SME
    Loveridge Coarse Coal Slurry System--An Update

    By R. L. Shaw, D. W. Alexander

    Consolidation Coal Company's Loveridge Mine operates the only coarse coal hoisting and overland slurry transport system in North America. The system has been in operation since April 1980 and acc

    Jan 1, 1983

  • SME
    Precious Metals

    By Nathaniel Herz, R. J. Adamson, C. M. Romanowitz, Frank W. Jr. McQuiston, C. D. Hoyt, Robert S. Shoemaker, P. H. O’Neil

    1. INTRODUCTION In this section, precious metals are defined as gold, silver, and the platinum group metals comprised of platinum, palladium, iridium, osmium, and rhodium. If the first three years

    Jan 1, 1985

  • SME
    Evolution Of Mining Equipment Operations In The Wyoming Powder River Basin

    By K. R. Miller

    In recent years, surface mine equipment operators in the Campbell County region of the Wyoming Powder River Basin have found new ways to solve old problems. This paper will examine overburden strippin

    Jan 1, 1998

  • SME
    Geologic Mapping Techniques And Applications At Kennecott's Utah Copper Division Open Pit Mine At Bingham Canyon, Utah

    By Wilbur H. Smith

    Geologic mapping techniques at the Bingham Mine have evolved as rapidly expanding applications of geological data have caused new methods to be utilized. The most significant changes in method have be

    Jan 1, 1968

  • SME
    Design of Plants

    By F. A. Gates, Bengt Samuelson, James E. Edmunds, S. McCune, Neil Hario, Norman L. Weiss, J. M. Bertram, A. M. Cavaliere, F. M. Jr. Stephens, D. D. Chiang

    DESIGN BASIS Size of Project The size of the project generally is expressed in tons of ore milled per day, but company policies differ widely in this respect with a few adhering to this set figu

    Jan 1, 1985

  • SME
    Optimizing Refractory And Oxide Gold Ore Operations With High-Pressure Grinding Rolls

    Optimal gold recoveries largely depend on efficient liberation of the gold or gold-bearing minerals as well as on maximum access for the lixiviant. Thus, crushing and grinding may become the most cost

    Jan 1, 1994

  • SME
    Heavy Mineral Placers (4805d0a4-d7ed-4952-bcb7-1b02a0140894)

    By K. J. Stanaway

    Concentrations of minerals between 3.5 and 5 specific gravity such as ilmenite, rutile and zircon in large accumulations of sand constitute "heavy mineral" placers. Two fundamentally different modes o

    Jan 1, 1991

  • SME
    Dynamic Modeling & Simulation of a Sag Mill for Characterization of Mill Charge

    By V. Srivastava, T. Ghosh

    "Modeling and Simulation of SAG Mill has been widely used in design and optimization of mill performance in terms of its power draw, processing capacity and product size distribution. However, these m

    Jan 1, 2017

  • SME
    "The Effect Of Coal Strip Mine Reclamation On Midwest Water Supplies"

    By James A. Deane

    Strip mine reclamation Fs the process of restoring the land affected by the mining process to its most productive use. This can be timber production, pasture, crop land, wildlife and/or recreational u

    Jan 1, 1965

  • SME
    Rock, Sand And Gravel Resources Strong, But Challenged

    By John E. Roberts

    People are not a novelty. But the phenomenal numbers thereof, who have approached, settled, and been born in California in the past twenty-five years, are such a problem as to be a novelty in the broa

    Jan 1, 1967