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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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