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The Utilization Of Coarse Pre-Concentration Rejects In The Preparation Of Underground Backfills At Xstrata Nickel?s Ontario Operations
By T. Weatherwax
As part of a strategic research initiative at UBC to design and evaluate integrated underground mining and mineral processing systems, work has been done to determine how to utilize the coarse rejects
Jan 1, 2008
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IntelliMine - Innovative technologies and concepts for the sustainable and intelligent Deep Mine of the future
By H. Hejny
"The mine of the future will exploit mineral raw materials at greater depths than today, requiring completely different approaches compared to today’s deep mines, in order to get mineral rights. Only
Jan 1, 2011
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Effect of Operating Parameters on the Breakage Process of Calcite in a Stirred Media Mill Mining, Metallurgy and Exploration
By Diler Katircioglu-Bayel, Oner Yusuf Toraman, Safak Gokhan Ozkan
One of the most energy-intensive processes for producing submicron range calcite is stirred media mill. In the present work, numerous operating parameters such as solid mass fraction, grinding media s
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Multi-Gravity Separator: An Alternate Gravity Concentrator To Process Coal Fines
By A. K. Majumder
The multi-gravity separator (MGS) is a novel piece of equipment for the separation of fine and ultra-fine minerals. However, the published literature does not demonstrate its use in the separation of
Jan 1, 2007
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An Innovation Of Practical Underground Stope Design Optimization And Cut-Off Grade Calculation
An incremental analysis based stope design optimization method was developed at Exodus, an underground project located 30 miles north of Carlin, Nevada. Traditional underground stope design methods, b
Jan 1, 2012
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Preliminary Design of the Caldecott Fourth Bore
By Bhaskar B. Thapa, Michael T. McRae, Johannes V. Greunen
This paper describes the preliminary design of the fourth bore of the Caldecott Tunnels along State Route 24 in Oakland, California. The paper focus is on two major aspects of the project: initial sup
Jan 1, 2007
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Economic Decision-Making For Methane Drainage Systems For Underground Coal Mines – Preprint 97-157
By J. M. Mutmansky, A. Wang
This paper defines the elements of a basic economic model for decision-making when considering a methane drainage system for an underground coal mine. A drainage system will require significant capita
Feb 24, 1997
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Nation Needs More Coal-Fired Plants, National Coal Show Attendees Told
By Steve Kral
A few months ago, Congress passed, and President Bush signed, a national energy bill. Designed to decrease the nation’s dependence on foreign sources of energy, the bill earmarked several billion dol
Jan 1, 2005
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Recent Advances In Coal Spiral Development – Preprint 97-82
By W. S. Weldon, R. M. G. Machunter
The use of spiral separators for the beneficiation of fine coal typically in the size range - 2+0.lmm is now well established process technology. Developments during the mid 1980's resulted in th
Feb 24, 1997
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Sustainability For Nature And Mankind
By M. Javier
Defining the concept of sustainability is an important step for industry and society. It is necessary in order to clarify what it means when debunking the many misinterpretations pervasive in differe
Jan 1, 2012
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Pumpable Roof Supports: An Evolution In Longwall Roof Support Technology (aa067599-8739-4939-97db-53d31f797a34)
By T. M. Barczak
Pumpable roof supports provide an alternative approach to secondary support in underground mining. Unlike all other supports that are either partially or fully prefabricated prior to being transporte
Jan 1, 2008
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Pre-Failure Pillar Yielding
By J. F. T. Agapito, R. R. Goodrich
Yield pillars have been used for many years to help reduce stresses near mine openings and improve roof and floor stability. A yield pillar is often defined as a pillar that fails but retains residual
Jan 1, 2001
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Non-Invasive Exploration In An Environmentally Sensitive World
By K. E. Livo, D. H. Knepper
Modern remote sensing provides a means for locating and characterizing exposed mineralized systems in many parts of the world. These capabilities are non-invasive and help target specific areas for mo
Jan 1, 2004
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Control Of Surface Movements Above Active Coal Mines In Appalachia
By A. Jarosz
The surface manifestation of underground mining usually entails five distinct types of surface movements, which can affect or damage surface structures, facilities and renewable resources. These m
Jan 1, 1986
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Chunnel Repairs Call On Conjet Hydrodemolition Robots
Train services through the Channel Tunnel linking Britain and France where scheduled to be fully restored in February 2009 following several months of repairs after a major fire in the tunnel on Sept.
Jan 1, 2009
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A simplified approach to coal mine seal design
By M. M. Gadde
Recent regulatory changes in the United States make it mandatory to conduct structural analysis of coal mine seals used to isolate abandoned workings from active mining areas. Different loading criter
Jan 1, 2009
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Technical Note - Increased value of refined high sulfur coal
By P. R. Dugan
Sulfur removal from high sulfur coal has several objectives including: a) reduction of the atmospheric load that contributes to the problem of acid precipitation; b) reduction of ash, which contribute
Jan 8, 1987
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Mine Pillar Design Using the Ground Reaction Curve Concept
By Ravi Ray, Kostas Kaklis, Zach Agioutantis
"Modern underground mining is becoming more complex and geotechnically challenging. The engineer uses numerical, analytical, and data-driven methods (empirical and/or experimental) or their combinatio
Jan 1, 2019
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Impact Of Electronic Blasting Detonators On Downstream Operations Of A Quarry
By G. Caron, M. Boisclair
In 2005, CANMET-MMSL used its pool of expertise in ground control, open pit and underground mine engineering, mineral processing, information technology and applied mineralogy to launch a mine-to-mill
Jan 1, 2007
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Numerical Evaluation of Tunnel Lining in Visco?elastic creep active ground
By Kyoosang Yoo
The report presents the results corresponding to the analysis of a lining system for tunnels in soil and soft rock in creep-active ground. The purpose of the analysis is to evaluate the performance of
Jan 1, 2010