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  • SME-ICGCM
    Visual Recognition of the Load of Roof-Bolts by an Indicator

    By Joachim Leonhardt

    Hundreds ofbolt-indicators were already used successfully in the German deep hard coal-mines to increase the safety and economy. The bolt-indicator offers the simple possibility to show roof-bolt (anc

    Jan 1, 2001

  • SME-ICGCM
    Eclipse Bolting System

    By Alan Campoli

    The Eclipse System was developed by Minova USA Inc. formerly Fosroc Inc. to improve the performance of 5/8-inch deformed rebar fully grouted into a one inch borehole. An 1/8-inch offset bolt head comb

    Jan 1, 2003

  • SME-ICGCM
    An Investigation into the Support Systems in South African Collieries

    By A. Wilkinson

    An investigation into the performance of support systems that are currently used in South African coal mines was conducted. Five most critical components of a support system have been identified. Thes

    Jan 1, 2005

  • SME-ICGCM
    Engineering Classification of Ultra-close Multiple Seam Roofs in Datong Mining District of China

    By Yingda Zhai

    The range of interburden thickness between coal seams in Datong Mining District of China is large. From mining operation point of view, the closer is between the two seams, the greater is the impact f

    Jan 1, 2005