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WEMCO/LEEDS Flotation Column Development
By John B. Sabey, Vernon R. Degner
The industrial coal processing trend toward greater fines production, due to mining techniques and customer requirements for reduced ash and sulphur content in the fine coal product, is the basis for
Jan 1, 1988
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Impact Of Electronic Blasting Detonators On Downstream Operations Of A Quarry (22d10b2f-aefd-4aac-ad1c-1cb2ae95e088)
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, 2008
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Engineering Properties Of Coal Measure Rocks
By Richard E. Thill
Engineering properties of rock are essential in most phases of mining from site reconnaissance through mineral processing. Review of the literature indicates, however, that property data is scarce for
Jan 1, 1982
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Geology of the Brewer Gold Mine in South Carolina
By W. Scheetz
The Brewer Gold Mine is an open-pit, heap leach operation that processes about 122 kt/m (135,000 stpm). The mine is operated by Brewer Gold Inc., a subsidiary of Westmont Mining Inc., and is located n
Jan 1, 1991
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The Occurrence and Concentration of Rare Earth Elements in Acid Mine Drainage and Treatment Byproducts. Part 2: Regional Survey of Northern and Central Appalachian Coal Basins Mining, Metallurgy and Exploration (97fd897c-9335-44ad-81ca-4f510acd7528)
By Paul F. Ziemkiewicz, Aaron Noble, Christopher R. Vass
Many modern industries rely on rare earth elements (REEs) to produce products that are essential to both civil and defense applications. In a prior study (Vass et al., 2019), the authors showed that R
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The Occurrence and Concentration of Rare Earth Elements in Acid Mine Drainage and Treatment Byproducts. Part 2: Regional Survey of Northern and Central Appalachian Coal Basins Mining, Metallurgy and Exploration
By Paul F. Ziemkiewicz, Aaron Noble, Christopher R. Vass
Many modern industries rely on rare earth elements (REEs) to produce products that are essential to both civil and defense applications. In a prior study (Vass et al., 2019), the authors showed that R
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China’s Coal Industry at the Crossroads
By Jerry C. Tien
Changes and the pace of change in China’s coal industry have been extraordinary during the past several years. At least 35 of the 94 former coal bureaus have been restructured into different mining c
Jan 1, 2003
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Sulfur From Surface Ores
By John M. Dale
Now that the price of sulfur has reached unexpected high levels, it is little wonder that sulfur from surface ores is again receiving attention. In most instances, it is advantageous for an ore to be
Jan 9, 1981
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Carbon Neutral, Energy Efficient Method For Gas Production From Methane Hydrates
By T. Yegulalp, M. Castaldi
As global energy demands increase, there will be a critical need to employ fuels that have minimal environmental impacts. While hydrogen is considered the ultimate fuel for that purpose, hydrocarbon
Jan 1, 2007
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Reclaiming Steep-Slope Eastern Coal Mines For Successful Reforestation
A methodology has been developed and demonstrated to be effective in reclaiming surface-mined land for a forestry post-mining land use. The Forestry Reclamation Approach (FRA) has been applied, almos
Jan 1, 2011
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Recent Developments in North America in the Design of Precast Concrete Tunnel Linings ? Introduction
By Brian Garrod
Increasing use of pressurized-face tunnel boring machines in North America has produced a similar increase in the application of precast concrete tunnel linings. Where a pressurized TBM is needed, imm
Jan 1, 2008
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Dual Concentrate From The Egyptian Baritic Iron Ore
By F. Hassan, M. A. Arafa
At El-Gedida iron ore deposits there is a block of about 30million tons neglected due to its higher sulfur content due to the presence of barite gangue minerals. From this bluk by magnetic separation
Jan 1, 1999
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Development of the Design Build Philosophy—Tren Urbano to Second Avenue Subway
By Chris Bennett, Drupad Desai, Kirit Mevawala
INTRODUCTION The design/build (D/B) philosophy of contract delivery is neither new nor unusual when it comes to at-grade, elevated or high-rise structures. But when it comes to constructing underg
Jan 1, 2005
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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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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
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Recent Developments in the TBM Industry—New and Innovative Technologies
By Martin Herrenknecht, Karin Bäppler
The last five years have seen a remarkable increase in tunnelling projects in both soft ground and hard rock applications. Part of the increase is a result of recent Research & Development efforts to
Jan 1, 2005
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Adventures in Microtunneling
By Joseph Clare, Elizabeth Anderson, Mike McGinley, Ron Hines, Judy Cochran
The South Lake Union Pipelines contract for King County Wastewater Treatment Division and Seattle Public Utilities in Seattle, Washington included three 1.8 m (72-in)inside diameter microtunneled pipe
Jan 1, 2005
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Theoretical And Experimental Study Of Compaction Process In Roll Press
By R. T. Dec
A review is undertaken of existing mathematical models of compaction process in roll press. The example of plane-strain, plane-stress model is presented together with comparisons between computed and
Jan 1, 2000
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Flambeau And Ridgeway Mines – Lessons Learned
By F. D. Fox
The Flambeau and Ridgeway Mines, both owned and operated by wholly owned subsidiaries of Kennecott Minerals Company, were located very close to populated areas having initial concerns about health, sa
Jan 1, 2003
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MINExpo 2000 Exhibitors Display Their Goods & Services
The following is a summary of some of the companies that were exhibiting their products and services at MINExpo INTERNATIONAL 2000. Atlas Copco develops, manufactures and markets rock drilling too
Jan 1, 2000