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Ground Improvements for CSO Connections to a Large Tunnel, Cleveland, Ohio
By Narendra N. Khatri, Michael Deutscher, Jozef F. Zurawski
Five sewer connections were required to divert Combined Sewer Overflow (CSO)from existing outfalls to an old underutilized large diameter brick sewer (the Easterly Interceptor). The connections were p
Jan 1, 2005
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Performance Evaluation Of Friction Stabilizer Bolts
By Franz Walchshofer, Mark Kuchta, Nobuharu Isago, Ugur Ozbay, Wolfgang Dolsak
A series of in situ pull test were performed on a new design friction stabilizer bolt with the objective of determining its performance characteristics. The bolt is installed while drilling, thus imp
Jan 1, 2005
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Ventilation And Climate Simulation Of Development Ends In Metal Mines
By P. Rostami
It is important to study the ventilation system in order to better design and control of the working environment in deep underground mines. With increasing depth, heat, and humidity performance may be
Jan 1, 2011
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A study of radon regulation and pathology as it relates to underground hardrock mining
By D. M. Loring
Radon progeny have been a health and safety concern for miners since the mining of radioactive minerals began. Through the ?nuclear age?, it has become better understood and the regulations have becom
Jan 1, 2009
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Destruction Of Cyanide In Gold And Silver Mine Process Water
By F. W. DeVries, O. B. Mathre
Addition of Kastone® peroxygen compound and formaldehyde to cyanide gold extraction process effluents, containing at least 5 mg soluble copper per liter, will oxidize acid-dissociable cyanide to leve
Jan 1, 1981
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Statistical Methods Of Estimating Mining Costs
By K. R. Long
Until it was defunded in 1995, the U.S. Bureau of Mines maintained a Cost Estimating System (CES) for prefeasibility-type economic evaluations of mineral deposits and estimating costs at producing and
Jan 1, 2011
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The Pyke Asbestos Deposits, New Zealand
By Jr. Babcock
The Pyke asbestos deposits were discovered by Kennecott Explorations (Australia) Pty. Ltd., in 1969 during the course of base metal exploration on the South Island of New Zealand. Extensive occurrence
Jan 1, 1978
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Controlled And Monitored Rock Excavations In Urban Areas
By D. S. Saxena, Jack K. Tuttle
Lack of understanding of useful applications of explosives on construction work stem primarily from the fact that explosion is commonly associated with destruction. On rock excavation and other constr
Jan 1, 1997
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Selecting a Minicomputer From a Manufacturer
By David van Cleave, David L. Rome
Whether you buy your minicomputer from a manufacturer or another vendor, the first thing you must do is define your needs. With good planning, the initial cost will be low and your return on investmen
Jan 11, 1981
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The Optimum Production Equipment Scale For Open Pit Coal Mining
The trend for using larger equipment in open pit mining to achieve cost effectiveness raises the question about the optimum economic point of scale in the current world of globalization. The present p
Jan 1, 2004
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Newmont?s Phoenix Mine rises with the help of Hitachi shovels
Scattered north and south along a 161-km (100-mile) stretch of Interstate 80, Newmont Min¬ing Corp. owns four active mining properties in Nevada?s northern high desert ? Carlin Trend Operations, Midas
Jan 2, 2010
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Selenium And Arsenic Removal From Mining Wastewaters
By Phil Pennington, D. Jack Adams
Mining and processing of minerals, metals, and fossil fuels can release selenium and arsenic into wastewaters. Both selenium and arsenic are difficult to remove to levels that meet current drinking w
Jan 1, 2005
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Discussion - Some New Findings From Surface Subsidence Monitoring Over Longwall Panels - Luo, Y., Peng, S. S.
By E. Arioglu
Discussion by E. Arioglu Y. Luo and S.S. Peng are to be congratulated for their outstanding paper providing new results from surface subsidence monitoring over longwall panels under different condi
Jan 1, 1993
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Phased Approach to Stormwater Tunnel Rehabilitation
By Todd Wanless
This paper addresses the challenges experienced by the designer and three government agencies during implementation of major improvements for the Turkey Creek Tunnel in Kansas City, Kansas. The tunnel
Jan 1, 2008
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More Than 500,000 Attend bauma 2007
Things are going well in the mining and construction industries world-wide. So good are things that from April 23 to 29 more than 500,000 visitors involved in those two industries attended the bauma 2
Jan 1, 2007
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Bulk Material Handling by Conveyor Belt at El Abra
By Rainer Kahrger
During the last decade, advances were made in solvent extraction/electrowinning (SX/EW) technologies. Combined with heap leaching, these technologies made it viable to exploit large, low-grade oxide
Jan 1, 1996
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Evaluating The Use Of Booster Fans In Two Underground Coal Mines (dad85aba-30c3-4dbb-bffb-81f370700600)
By J. M. Wempen
As development in underground coal mines progresses away from the critical components of the ventilation system, including the main fans and ventilation shafts, resistance is markedly increased. This
Jan 1, 2011
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New Mining Districts in Mexico
By Leonel Lopez
Throughout Mexican history, mining has been an important, traditional activity. Before the "Discovery of America," native miners worked a variety of deposits throughout the country, including Mixtec g
Jan 1, 1994
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Svedala Barmac “High Intensity” Crushing
By P. J. Cook
Comminution is one of the fundamentals of mineral processing, requiring large expenditures to be made on capital equipment, installation, power and maintenance. The trend toward lower grades and h
Jan 1, 1999
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Evaluation Of An Enhanced Gravity-Based Fine-Coal Circuit For High-Sulfur Coal
By M. K. Mohanty
One of the main objectives of this study was to evaluate a fine-coal cleaning circuit using an enhanced gravity separator specifically for a high sulfur coal application. The evaluation not only inclu
Jan 1, 2008