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Advances in Dry Jigging Improves Coal Quality
By Richard Weinstein, Richard Snoby
There are many advantages to upgrading coal with dry jigging technology. The most obvious is the lack of process water, which eliminates the need for fines dewatering and slurry confinement. Dry jiggi
Jan 1, 2007
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Engineering And Construction Of The Goldstrike Roaster Facility
By B. Burke, R. Colquhoun, K. Thomas, R. Walton, D. Fentie
The new Roasting Facility at Barrick’s Goldstrike Mine in Nevada, U.S.A. was developed to process 12,000 tons per day of refractory gold ore. The process consists of crushing, dry grinding, roasting,
Jan 1, 2001
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Exploration (2303cc71-ebf3-44eb-bd90-42769f9f3467)
By D. R. Wilburn
The worldwide budget for nonferrous, nonfuel mineral exploration was expected to increase by 58 percent in 2004 from the 2003 budget, according to Metals Economics Group (MEG) of Halifax, Nova Scotia.
Jan 1, 2005
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Tunneling at Hollywood Reservoir
By D. Olsen, S. Cole, J. Strid, G. Colzani
This paper focuses on the underground tunnel work at the Hollywood Water Quality Improvement Project (HWQIP) in Los Angeles, CA. The HWQIP is being constructed to provide a water distribution system t
Jan 1, 2001
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Industry and University Cooperative Research– Ways to Make It Work
By William H. Dresher
Introduction A subject long debated but rarely resolved involves the interaction between the academic community and industry in the sponsorship and conduct of research. The subject is, unfortunately,
Jan 10, 1984
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CART?: A Fundamental Tool For Process Circuit Design
By A. Noble
The design of separation circuits can be a complex, labor-intensive and costly process. While the engineer?s experience along with extensive data sets and simulation are crucial tools for determining
Feb 27, 2013
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Acquiring Capital Funds for Coal Mining
By Dale S. Hursh, William A. Brooks
Introduction US dependence on external energy sources is dangerous because of unstable political situations existing in key energy exporting countries. So, recent national energy policies call for
Jan 9, 1982
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Laboratory Evaluation Of Shield Dust Entrainment In High Velocity Airstreams (913d8715-0740-44d1-b301-b965be654afd)
In conjunction with steady increases in production levels, longwall operators have applied greater quantities of ventilating air and spray water in an effort to control respirable dust and/or methane.
Jan 1, 2001
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Design And Construction Service Tunnels On Palm Jumeirah Island
By Ben Hayes, Michael Ryjevski
The Palm Jumeirah is the smallest of the three Palm Islands (Palm Jumeirah, Palm Jebel Ali and Palm Deira). It is located on the Jumeirah coastal area of the emirate of Dubai, in the United Arab Emira
Jan 1, 2007
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Middle Rouge Parkway Interceptor Extension—A Case History
By Harry R. Price, Behrooz Tahmasbi, Charles J. Roarty
The 2,408 meter (7,900-foot) long Middle Rouge Parkway Interceptor Extension varies in size from 1.52-meter (5-foot) to 2.36 meter (7-foot 9-inch) inside diameter. Most of the sewer was constructed in
Jan 1, 2007
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Cost Effective Tunnel Development In Slovakia
By John Chadwick
In the drive for faster development advance rates, railbound systems can be advantageous, in the right application. Skanska BS, the contractor to mine-owner VSK Mining, is driving an adit access deep
Jan 1, 2009
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TECHNICAL NOTE - Influence of Process Variables in the High Gradient Separation of Uranium Ores
By S. G. Malghan, J. P. Van Dillen
Introduction Some uranium minerals are paramagnetic and hence are amenable to concentration by high gradient magnetic separation (HGMS). This paper describes effects of the HGMS parameters-pulp vel
Jan 12, 1983
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Use Of The 1500-pDR For Gravimetric Respirable Dust Measurements At Mines
By W. R. Reed
The National Institute for Occupational Safety and Health (NIOSH) uses light-scattering dust monitors (nephelometers) in its research to develop dust controls to reduce respirable silica dust overexpo
Jan 1, 2012
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Solid Phase Characterization For Metal Mine Waste Drainage Quality Prediction
By K. Lapakko
Several static tests estimate the capacity of mine waste to produce and neutralize acid and are used as tools for predicting metal-mine waste drainage quality. Various methods and their accuracies ar
Jan 1, 2003
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Terrorism and the Mining Industry
By A. Dale Wunderlich
Since Sept. 11, 2001, the author has been asked by several mining companies and mining publications to share some of his insights on how the terrorist attacks on the World Trade Center (WTC) and Penta
Jan 1, 2002
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Case Study: Correcting Mechanical And Control Problems On Essroc?s Multi-Drive Station Horizontally Curved Conveyor ? Introduction
By A. Jennings
[ ] In November 2005, Essroc Cement, part of the Italcementi Group, commissioned a long overland conveyor at their Nazareth plant in Pennsylvania. This conveyor, tagged CV-105, was designed to tran
Jan 1, 2012
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Extraction Metallurgy Of Copper From Chalcopyrite Concentrates Without Sulfuric Acid Generation Via Chlorination III. Integration Of Gaseous Chlorination And Selective Oxidation
By T. Tamagawa, N. S. Fu, I. Iwasaki, M. Kobayashi
A 3-stage fluidizing bed process of chlorination, selective oxidation and sulfur chloride conversion was tested for processing of a chalcopyrite concentrate. It was found that the use of excess oxygen
Jan 1, 2000
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Proposed Contracting Practices For The Caltrain Downtown Extension
By Derek J. Penrice
The Caltrain Downtown Extension (DTX) project will extend commuter and future statewide high-speed rail service into the Transbay Transit Center, which will be located in the business district in down
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Durban Harbour Tunnel—First Use of a Slurry Tunnel Boring Machine in South Africa
By Andrew K. hg` Officer, A. L. Griffiths, J. Andrew Hindmarch, Gert Wittneben
Durban Harbour in South Africa is one of the continent’s busiest ports however the harbor entrance is currently too small for the new generation of container ships. There-fore it is to be deepened and
Jan 1, 2007
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Replacing The Stone and Rebuilding the Pentagon
By Jim Owens
The methodology of quarrying changed significantly in the Indiana limestone industry in the 60 years between Sept. 11, 1941 and Sept. 11, 2001. The former was the date of the Pentagon groundbreaking
Jan 1, 2005