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  • SME
    A Design Model For Integrated Haulage Systems

    By H. Sevim

    An innovative approach in designing the haulage systems for underground coal mines is discussed in this paper. The haulage systems are formed by serially connected components. Therefore an economic an

    Jan 1, 1987

  • SME
    Current Applications And Future Trends Of Perlite Worldwide

    By T. Karalis

    Perlite is a generic term for naturally occurring siliceous rock. It is a form of natural volcanic glass the main constituent of which is amorphous silica (70-76%). Perlite, when heated rapidly to its

    Jan 1, 2006

  • SME
    Selectively Depress Copper-Activated Pyrite in Copper Flotation at Slightly Alkaline pH "Mining, Metallurgy & Exploration (2021)"

    By Yongjun Peng, Yufan Mu

    Pyrite depression in the flotation of copper ores is difficult due to the activation of Cu2+ ions on pyrite surface. In this study, the radical chain reaction involving the redox cycling of Cu(I/II) i

    Jan 26, 2021

  • SME
    Comparing the Air Quality inside Enclosed Cabs of Underground Mining Equipment with MERV 16aAnd HEPA Filters

    By J. Noll, J. A. Organiscak, A. B. Cecala

    "In recent years, significant strides have been made to optimize the design of filtration and pressurization systems used on enclosed cabs of mobile mining equipment to reduce respirable dust and othe

    Jan 1, 2016

  • SME
    Horse: Value-Based Objective Functions Applied to Circuit Analysis

    By A. Noble

    Linear circuit analysis (LCA) is a fundamental tool which has been used to evaluate mineral separation circuits during the preliminary design phase. Traditionally, the LCA methodology uses the analyt

    Feb 23, 2014

  • SME
    East Arlberg Highway Tunnel, Austria

    By Hans Treichl

    1. INTRODUCTION For Europe the Arlberg road tunnel signifies the elimination of the largest traffic barrier between Bucharest and Paris in the east-west transversal. Apart from that the tunnel will

    Jan 1, 1979

  • SME
    Use Of Rubber-Lined Balling Drums In The Pelletizing Plant At Hoogovens Ijmuiden ? Summary

    By Dolf Vos

    The balling section of the pelletizing plant at Hoogovens IJmuiden consists of 7 balling drums. Each with an average capacity of 100 tons of green pellets per hour. The balling drums are equipped wi

    Jan 1, 1983

  • SME
    Until the End and Beyond: The Sustainable Development Strategy of the German Hard Coal Mining Industry

    By J. Kretschmann

    "By the end of the 1950s, the German hard coal mining industry produced 150 million tons of hard coal per year in 170 collieries with 600,000 employees. At that time, 70% of the primary energy demand

    Jan 1, 2017

  • SME
    Design Considerations For Subsidence Control

    By M. Karmis

    Subsidence planning and control must be an integral part of mine design in order to minimize the economic impact of underground mining on the surface. Pre-calculation of surface deformations which may

    Jan 1, 1990

  • SME
    Biodegradation of Sodium Isopropyl Xanthate by Paenibacillus Polymyxa and Pseudomonas Putida

    By K. A. Natarajan, M. R. Sabari Prakasan

    "Biodegradation of sodium isopropyl xanthate using two types of bacterial strains, Paenibacillus polymyxa and Pseudomonas putida, is demonstrated. At concentrations higher than 50 mg/L, the presence o

    Jan 1, 2015

  • SME
    New Developments In The Recovery Of Manganese From Lower-Grade Resources (444eb20b-69a4-4c4b-b903-e25e4ea9e5f8)

    By N. Chow

    The recovery of manganese from lower-grade resources has been studied for a number of years. Of key importance in prior work was the discovery that higher-valent manganese can be readily leached with

    Feb 1, 2012

  • SME
    The Effects of Rock Mass Strength and Joint Orientation on Pillar Stability in Underground Coal Mines

    By S. M. Hossaini, M. Ataei, H. Moosavi

    The abstract highlights the importance of pillar stability in underground coal mines and the influence of rock mass strength and joint orientation on pillar behavior. The study employs numerical model

    Apr 4, 2022

  • SME
    EPB Bypass and Hanging of 2.6 m Dia. Sewer under Live Flow Conditions

    By Matthew Geary, Stephen J. Marino, Jordan A. Schreiner

    "INTRODUCTION Project Overview The Southeast Collector (SeC) is a new 15km long 3.0m internal diameter wastewater tunnel designed by Hatch Mott MacDonald (HMM) that twins the existing 2.6m diameter Yo

    Jan 1, 2016

  • SME
    Acid/Base Sites On Mineral Filler Surfaces Determined By The Adsorption Of Probe Molecules (AIME)

    By R. J. Pugh

    In addition to directly analyzing the surfaces of minerals using high vacuum instrumentation methods, some important surface properties of mineral fillers can be determined indirectly by using reactiv

    Jan 1, 1992

  • SME
    Nuclear Methods Applied To Ore Beneficiating Processes Present And Future ? Introduction

    By Jack G. Crump

    Nuclear radiation systems for gauging solids content in process slurries and level in crushers has demonstrated acceptance in ore processing. The use of nuclear radiation for moisture analysis of bulk

    Jan 1, 1965

  • SME
    The Economic Impact Of EPA SO2 Standards On The U.S. Coal Industry ? Introduction

    By Richard A. Levins

    The imposition of non-market regulations, such as the proposed SO2 standards for coal combustion, will typically lead to less efficient (thus more costly) production in a free enterprise system. For t

    Jan 1, 1976

  • SME
    In Situ Assessment of the Effectiveness of an Undisturbed Single Driving Entry’s Relief Borehole in Coal Burst‑prone Seam - Mining, Metallurgy & Exploration (2021)

    By Qingwen Shi, Gang Xu, Shuwen Wang, Brijes Mishra

    Pressure relief borehole is one of the most effective methods to treat coal burst in deep-buried coal seams. However, due to the large amount of randomly distributed fractures in the coal body and the

    Oct 19, 2021

  • SME
    Study on Optimization of Stope Structure Parameters for Steeply Inclined Medium-thick Broken Ore Bodies

    By Dongjie Zhang, Shuxin Liu, Jianduo Wang

    Broken rock mass and unreasonable stope structure parameters can cause excessive ore loss and dilution in sublevel caving; this is the main problem faced by caving mining in recent years. This paper p

    Mar 10, 2022

  • SME
    Pan American Mine Operation In The Combined Metals Limestone, Pioche, Nevada ? Introduction

    By Virgil A. Bilyeu

    The Pan American Mine, in southeastern Nevada, is about 26 miles west southwest of Pioche, Nevada, and about 266 miles southwest of Salt Lake City, Utah. The mine is located in the Comet Mining Dis

    Jan 1, 1967

  • SME
    Cemented Tailings Backfill - It's Better, Now Prove It!

    By P. Moran

    A promising and increasingly popular tailings management strategy is to place cemented tailings underground as backfill. The placement of cemented tailings results in enhanced geotechnical stability a

    Feb 27, 2013