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English Sea Drives - A Success Story
By Joseph L. Margin
From a stubborn start to record setting performances in little over a year, that is the story of the English Running Tunnel Boring Machines. The program to transfer technical information on these high
Jan 1, 1991
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Industrial Minerals 2003
Editor’s note: As usual, the June issue features an industrial minerals review. And some thanks are in order. Thank you to the industrial minerals annual-review editor, to the technical committees
Jan 1, 2004
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A Slope Stability Analysis For The Trojan Pit Expansion At The Wharf Resources Mine, Black Hills, SD
By V. L. Franzen, Z. J. Hladysz, C. A. Kliche
The Wharf Resources mine, located in the Bald Mountain Mining District approximately 6.4 km (4miles) west of Lead, South Dakota, has operated a surface gold and silver mine and heap leaching processin
Jan 1, 2000
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Using Metal-Tolerant Plants to Reclaim Mining Wastes
By David R. Morrey
During the past 50 years, significant research has been performed in the ecology and physiology of plants that colonize soils containing elevated concentrations of heavy metals. Similar work has also
Jan 1, 1995
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Geochemical Profiling Of A Sulfide Leaching Operation: A Case Study
By S. M. Flaherty, R. E. Scheffel, A. Guzman
Geochemical conditions within a leaching operation are heterogeneous. This variability arises mainly from hydrological controls imparted by physical characteristics of the ore and by heterogeneous me
Jan 1, 2006
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Characterization Of Coal And Quartz Dust In Interior Basin Coal Mines
By Y. Paul Chugh
NIOSH and the Illinois Clean Coal Institute are funding studies on characterization of coal and quartz dust in Interior Basin mines since 2009. Coal dust characteristics vary significantly and, are vi
Jan 1, 2011
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Large Flotation Cells In The Copper Processing Industry ? Recent Experiences And Future Considerations (Part 1)
By D. Govender
In recent years, economies of scale have continued to drive copper projects to larger throughputs to offset depleting lower grade resources. A decade ago there were only a small number of projects tha
Feb 27, 2013
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Discussion - Development of the Screen Bowl Centrifuge for Dewatering Coal Fines Technical Papers, MINING ENGINEERING, Vol. 35, No. 4 April 1983, PP. 333-336
By N. D. Policow, J. S. Orphanos
D.A. Dahlstrom In the paper, a comparison was made between flowsheets using the screen bowl centrifuge and disc filters, respectively, as the primary dewatering device. The authors very effectively
Jan 12, 1983
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The Priceless Ingredients
By Grant P. Cordon
Our subject, "Safety, Legal, and Contracting," is a range of topics which covers a broad spectrum, but is obviously Intended to focus our attention upon certain particular aspects of tunnel problems.
Jan 1, 1974
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Piedras Verdes: Mexico?s Newest Copper Mine
By P. J. Rua
The Piedras Verdes copper mine is a new run-of-mine (ROM), heap leach, solvent-extraction/electrowinning (SX-EW) operation located 21 km (13 miles) north-northwest of the town of Alamos in the state o
Jan 1, 2008
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Productivity Gains Using A Computer-Aided Earthmoving System On A Track-Type Dozer
By D. R. Gagnon
Mining companies are continually looking for product-ivity and efficiency improvements with their equipment to reduce operating costs. This paper will review the results of a productivity analysis co
Jan 1, 2002
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Review of Issues Related to Cerchar Abrasivity Testing and Their Implications on Geotechnical Investigations and Cutter Cost Estimates
By Jamal Rostami, Levent Ozdemir, Amund Bruland, Filip Dahl
Cerchar Abrasivity Index (CAI) is one of the commonly used tests to evaluate rock abrasiveness for cutter life/cost estimations of TBM projects. There are at least 3 style machines, 2 different pin ha
Jan 1, 2005
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An Investigation Of Grout Penetration Depth In Fractured Rocks
Grouting is mainly used to improve mechanical properties or decrease the permeability of rock mass around civil and mining projects. The purpose of this paper is to present the most effective factors
Feb 27, 2013
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Design and Risk Management Strategy for the Sound Transit Beacon Hill Station and Tunnels
By Joseph Gildner, Donald J. Phelps, Jürgen Laubbichler, Christopher Tattersall, David McAllister
The Beacon Hill Station and Tunnels portion of the Sound Transit Central Link Project consists of one mile of twin rapid transit tunnels, an underground station, portals and ancillary works constructe
Jan 1, 2005
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Our Government's Stifling Excesses
By R. E. Murray
"It is a gloomy moment in the history of our country. Not in the lifetime of most men has there been so much grave and deep apprehension; never has the future seemed so incalculable as at this time. T
Jan 1, 1980
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American College Tunnels in Athens, Greece—Design and Construction of Very Large Diameter Tunnels in Rock
By S. Schina
Part of the Imittos Western Peripheral Motorway in Athens is the twin road tunnel in the vicinity of American College, with 20m excavation diameter. In the paper, the environmental and other requireme
Jan 1, 2001
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Advances In Autogenous And Semiautogenous Grinding
By Vladimir G. Kochnev
Crushing and grinding account for the major portion (60 to 80 percent) of the overall expenses for ore processing. Autogenous (AG) and semiautogenous grinding (SAG) have been considered a step forward
Jan 1, 2008
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Yule Quarry Back in Business Again
By Rex E. Loesby
The marble deposits of Yule Creek were first discovered in the late1870s. Minor quarrying occurred between that discovery and the early 1900s. Major development occurred in 1905, when Channing Meek,
Jan 1, 2003
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Proceedings Of Elko 2009: Mine Closure And Cover Design
By Bryan Ulrich
Rroundtable 2009, a Knight Piésold and Co.-hosted roundtable discussion on mine closure and cover design was held at the Red Lion Inn and Casino in Elko, NV on Feb. 12, 2009. Knight Piésold?s Bryan Ul
Jan 1, 2009
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More Than 30,000 Expected At MinExpo 2008
From Sept. 22-24, the Las Vegas Convention Center will be home to MinExpo 2008, the world?s largest mining equipment show that comes along once every four years. Sponsored by the National Mining Assoc
Jan 1, 2008