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Tough Times Not Enough To Deter More Than 2,200 From Northwest Mining Meeting
Amid some of the worst economic conditions that the mining industry has been faced with in more than a decade, the mood among the large crowd at the 114th Annual Northwest Mining Association?s annual
Jan 1, 2009
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Design, Construction And Start-Up Of The Ilo Smelter Modernization Project
By H. Walqui, C. Noriega
Southern Copper Corporation (SCC) is one of the world’s largest copper companies and is finishing the modernization of the Ilo copper smelter. A single ISASMELTTM furnace will start smelting 1,200,000
Jan 1, 2007
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Loosening And Face Stability With Shallow Overburden In The ?Sitina Tunnel,? Bratislava, Slovakia
By Chikaosa Tanimoto
INTRODUCTION Bratislava is located at the intersection of important traffic routes, including motor-ways, roads, railways, air traffic, trading, and inland waterway with an important harbour. The con
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Second Avenue Subway—Tunneling Beneath Manhattan
By Geoffrey Fosbrook, Donald Phillips, Anil Parikh
The Second Avenue Subway is a $16.8 billion project planned by the Metropolitan Transportation Authority (MTA) in New York City. It will reduce overcrowding and delays on the Lexington Avenue Line, im
Jan 1, 2005
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Experiences with Undermining by Coal in South Africa
By J. N. Van der Merwe
The paper provides an overview of subsidence research which was done by the Sasol Company in South Africa over a period of more than six years. The magnitudes of subsidence elements in South Africa ar
Jan 1, 1986
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Comparative Real-Time Characterization Of Frother Bubble Thin Films
By M. Gouet-Kaplan, J. A. Finch, S. Gélinas
Methylisobutyl carbinol (MIBC) and methoxy polypropylene glycol (Dowfroth 250) bubble thin films were characterized by composition and thickness determinations, using FT-IR spectroscopy and UV-Visible
Jan 1, 2006
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Boggo Road Busway Project, Brisbane, Australia
By Ted Nye
This paper describes a number of aspects of the design and construction of a driven tunnel which forms part of the Boggo Road Busway project. The driven tunnel is 430m long with an excavated width of
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More Than 1,200 Exhibitors on Hand at MINExpo 2004
By Georgene Renner, William R. Yernberg, Steve Kral
Allmand exhibited its LSC 100Light Sequence Commander, the mining industry’s first automatic lighting and command control system. The system is available with all of Allmand’s portable light towers.
Jan 1, 2004
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Repairs and Modifications to the Providence Water 2.3 m ID Scituate Aqueduct and Tunnel
By David Belknap, Clay Haynes, David Egger
Rehabilitation challenges were met nearly two months ahead of contract schedule for the Design-Build, Fast Track Scituate Aqueduct & Tunnel project in Cranston, Rhode Island. The aqueduct and tunnel w
Jan 1, 2005
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Update On Development Of Mini-Disc Drill Bits
By J. E. Friant
The Mini-DiscTM cutter drill bit is a radical design departure from the traditional tri-cone rockdrill bit. Miniature disc type cutting tools as small as 3.25 inches (82.5 mm) diameter are fitted to
Jan 1, 1999
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Characteristics Of Chimney Subsidence Sinkhole Development From Abandoned Underground Coal Mines Along The Colorado Front Range
By Gordon M. Matheson
The factors which control chimney subsidence sinkhole development in weak rock were assessed by analyzing the characteristics of approximately 3000 chimney subsidence features along the Colorado Front
Jan 1, 1986
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What Happens In Vegas: The Apex Tunnel Geologic Investigation
By Ann L. Backstrom
The Apex Tunnel is part of the Southern Nevada Water Authority?s proposed Clark, Lincoln, and White Pine Counties Groundwater Development Project. The project is intended to develop unused Nevada grou
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Coal Mining Subsidence and Golden Eagle Habitat
By Val E. Payne
Issues between resource utilization and resource preservation often develop in connection with coal mining. One such conflict exists in eastern Utah where PacifiCorp and Energy West Mining Company are
Jan 1, 1986
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New Application Of Organic Coating To Existing Ground Support Products - Preprint 09-107
By M. Slatter
The need for anti-corrosion coatings has existed for many years in the ground support industry, but the application requirements have made coating selection limited. Varying groundwater and chemical
Jan 1, 2009
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Computational Fluid Dynamics Simulations And Experimental Validation Of Tracer Gas Distribution In An Experimental Underground Mine
Following a disaster in a mine, it is important to understand the state of the mine damage immediately with limited information. Computational fluid dynamics can be used to simulate and ascertain info
Jan 1, 2011
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Continuous Improvement And Teamwork Are The Keys To Success At Phoenix Mine
By Scott Ellenbecker
The formation in Newmont Mining?s Phoenix Mine near Battle Mountain, NV contains high levels of abrasive quartzite as well as gold, copper and silver. Newmont started mining operations at Phoenix (for
Jan 1, 2009
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Measurement of Overburden Failure Zones in Close Multiple-Seam Coal Mining
Because of its small interburden thickness, concentrated stress distributions, high coal seam metamorphism, and complex geological conditions, mining the five coal seams (Nos. 5, 7, 8, 9 and 12) of Ka
Jan 7, 2020
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Large Excavator Cuts Operating Costs at Alabama Coal Mine
By Bill Elverman
Randy and Kenny Robison have visited every coal mine that would let them in the door, to survey the best mining practices. The brothers have spent nearly their entire lives working in coal operations
Jan 1, 2005
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The Treatment Of Refractory Gold Ores Containing Carbonaceous Material And Sulfides
By W. J. Guay
Carbonaceous gold ores containing gold dispersed in sulfides are refractory to cyanidation because: (1 ) the carbonaceous materials adsorb gold during cyanidation; (2) a portion of the gold s so finel
Jan 1, 1981
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Adeco As An Alternative To NATM: How It Works, WHY It Works
By Fulvio Tonon
And Rabcewicz said ?tunnels should be driven full face whenever possible.? ADECO, which stands for ?Analysis of Controlled Deformations in tunnels,? now allows us to fulfll Rabcewicz?s dream in any st