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Enhancement Of Bacterial Iron And Sulfate Respiration For In-Situ Bioremediation Of Acid Mine Drainage Sites: A Case Study
By James M. Harrington, A. Azra Bilgin, JoAnn Silverstein
The prevention of AMD in situ is more attractive compared to subsequent downgradient treatment alternatives that do not involve source control. AMD source control can be achieved by shifting the micr
Jan 1, 2005
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SME Research Forum - Mining Technology and Research Needs – Chemical Products Suppliers’ Perspective
The minerals industry consumes billions of dollars in raw materials, equipment, tools, services and chemicals. The industry, though, has turned overmuch of the research and development (R&D) for thes
Jan 1, 2000
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Tribute To J. Robert Woolsey
By Michael Cruickshank
Bob Woolsey was born in 1936 in the state of Georgia and grew up to be a man of great integrity, vitality, wisdom and charm, totally neutral on matters of race, gender, and religion. A true Southern G
Jan 1, 2008
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Application of Load Factors for Underground Structural Design
By John C. Stankus, Xiaoting Li
"Underground structures such as square/arch steel sets, king beam structure, etc. are widely used for the roof support in underground mines. In designing and calculating the required carrying capaciti
Jan 1, 2019
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Extraction and Separation of Zirconium Using 1-Octanol Mining, Metallurgy and Exploration) (58a7adb7-21cd-47cb-bca7-f6dd6d33ac42)
By P. L. Crouse, S. J. Lubbe, M. J. Kabangu
A selective extraction and separation of zirconium by solvent extraction with 1-octanol is proposed. The process is based on the dissolution of the metal basic carbonates in hydrochloric acid in the p
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The Kensico-City Tunnel Will Add Reliability to New York City’s Water Supply System
By Verya Nasri, Heather M. Ivory, Kevin Clarke, Eric Cole
Development of the New York City Water Supply System The New York City water supply system serves a population of almost nine million, including residents in neighboring counties. Peak day demands
Jan 1, 2007
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Recent Advancements In Slurry Shield Tunneling
By Yoshihiro Kawarabata
INTRODUCTION With only about 30% of Japan's entire population served by sewer systems at the end of 1980, extensive sewerage construction programs have been implemented. As major sewer network
Jan 1, 1983
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Times Square Connection: ?Supporting The Cross Roads Of The World?
By Victor F. Paterno
In December of 2007, a joint venture of J.F Shea, Skanska and Schiavone referred to as S-3II, was awarded a $1.15 billion (? 886,880,000) contract to construct the run-ning tunnels and station structu
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Innovations in Underground Communication Infrastructures
By Darrell Gillis
Recent accidents in the United States underground Coal Mines and the on-going carnage in Underground Chinese Coal Mines has shown the danger associated with the lack of communication infrastructures i
Jan 1, 2007
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Developing a Virtual Reality Environment for Mining Research
By J. Navoyski, B. Macdonald, W. J. Helfrich, J. L. Bellanca, B. Demich
DISCLAIMER The findings and conclusions in this paper are those of the authors and do not necessarily represent the official position of the National Institute for Occupational Safety and Health, Cen
Jan 1, 2019
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Reducing Enclosed Cab Drill Operator’s Respirable Dust Exposure At Surface Coal Operation With A Retrofitted Filtration And Pressurization System (83490ae4-de2e-4245-8093-9fec0a123d31)
By W. A. Heitbrink, J. D. Ashley, R. E. Gresh, J. A. Organiscak, A. B. Cecala
Many different types of mobile equipment used in surface coal mining utilize enclosed cabs to protect equipment operators. The overburden removal process is extremely dusty and can cause excessive ex
Jan 1, 2002
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Design And Construction Of Norad Expansion Project "Excavation Phase"
By Gerald G. Griswold, Allan G. Provost
INTRODUCTION The Norad Expansion Project was located 10 miles southwest of Colorado Springs, Colorado, within Cheyenne Mountain. The expansion areas to be excavated would be adjacent to the existin
Jan 1, 1979
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A Dynamic Systems Modeling Approach To Evaluating Backfill Designs
By M. Wickham
Design of an open pit backfill requires an understanding of highly varied processes including slope stability, hydrogeology, pit lake chemistry, climate, runoff, and mine waste behavior. Dynamic syst
Jan 1, 2001
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Evaluation Of Ct-Based Coal Washability Analysis System Under Simulated On-Line Conditions
By J. D. Miller, C. L. Lin
Appropriate software and hardware necessary to adapt a x-ray CT analyzer for determination of coal washability has recently been developed and sucessfully tested for well characterized samples under l
Jan 1, 2001
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Binding Iron Ore Pellets With Fly-Ash – Preprint 97-105
By D. D. Banerjee, S. K. Kawatra, T. C. Eisele
A high calcium fluid-bed combustor ash has been shown to be an effective binder at dosages of 1 to 2% of the magnetite concentrate weight. Magnetite pellets 1.3 cm (1/2 inch) in diameter were produced
Feb 24, 1997
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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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Challenge of Minerals Exploration in the 1990s
By Roy Woodall
Successful mineral exploration is the lifeblood of the mining industry. Contrary to what the environmental lobby would have the world believe, the industry is replacing the metals it is extracting. Th
Jan 1, 1992
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CIM and PDAC – South African Gold; Mining in a dot.com World
By Steve Kral
The mining industry has had three difficult years. Commodity prices have remained low and investor confidence in the industry has been shaken. And even though the Asian economy appears to be improvi
Jan 1, 2000
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Copper Hydrometallurgy – Evolution and Milestones
By Nathaniel Arbiter
In contrast to pyrometallurgy's 6000year history in metals production, hydrometallurgy is of relatively recent origin. The earliest reference to it was in the 16th century, with the first applica
Jan 1, 1994
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Creation Of An Underground Mine Development Sequencing Optimizer
By M. J. Blattman
Upon completion of an underground mine design, the planning engineer is faced with a surprisingly complex problem, “What development and mining sequence should be implemented so as to maximize the ret
Jan 1, 2003