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Industrial Minerals 2004 – Industrial Garnet
By D. W. Olson
Garnet has been used as a gemstone for centuries. However, garnet’s angular fractures, relatively high hardness and specific gravity, being chemically inert and non-toxic and free of crystalline silic
Jan 1, 2005
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Passive-Treatment of Acid Rock Drainage: What is the Potential Bottom Line?
By James J. Gusek
Passive-treatment systems that mitigate acid-rock drainage (ARD) from coal mines have operating since the mid-1980s. Large systems at metal mines are being contemplated. A 95L/sec (1500-gpm) capacity
Jan 1, 1995
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Selective mining and good grade control are key to Carlin Gold’s success
By Gerald C. Smith
Introduction Newmont Mining Corp.'s Carlin Gold Mining Co. mines gold ore and waste material from four open-pit mines in Northeastern Nevada. Combined production rate is 24.5 Mt/a (27 million st
Jan 11, 1985
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Looking for Mr. Good Contract
By Wayne E. Kilker, Michael J. McBride, William P. Levy, Thomas J. Lamb
Between 1989 and 2004 the Massachusetts Water Resources Authority (MWRA)constructed several major wastewater and water tunnels associated with three major projects in the Boston area of eastern Massac
Jan 1, 2005
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Bacís Flotation Cell For Gold- And Silver-Beard Pyrite Recovery
By J. R. Parga
In mineral processing, poor froth-flotation performance translates into both an enormous loss of revenue and an unnecessary waste of the ore reserve. In this context, Bacís Mining Company developed a
Jan 1, 2009
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The 97th Hour: Extending Refuge Alternative Survival ? Summary
By S. Cotten
The regulations for current coal mine refuge alternative (RAs) require that there be sufficient life support to sustain survival of the maximum number of RA occupants for a minimum of 96 hours. This
Jan 1, 2011
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The Effect Of Frother Type And Concentration On The Water Recovery And Entrainment Recovery Relationship
By J-P Franzidis
A study was undertaken to determine the effect of five industrial frothers on the relationship between entrainment recovery and water recovery. The experiments were conducted using a Batequip rectangu
Jan 1, 2000
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Water Jet Assisted Boring In South African Quartzites
By J. L. Page, A. C. Marlowe
The Research and Development Services of South Africa has begun underground trials with a Robbins 52RE blindhole borer using a cutterhead fitted with high pressure water jets to assist mechanical cutt
Jan 1, 1985
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Coal Quality And Resources In The Us Gulf Coastal Plain
By J. C. Willett, J. R. Sanfilipo, P. D. Warwick
The U.S. Geological Survey has conducted an assessment of the Nation’s coal deposits that potentially could be mined during the next 30 or more years. For the Gulf Coastal Plain region, the assessmen
Jan 1, 2001
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Ground Freezing Under the Most Adverse Conditions: Moving Groundwater
By Paul C. Schmall, Lucian P. Spiteri, Arthur B. Corwin
Moving groundwater is generally recognized as the most adversarial condition for ground freezing. Moving groundwater can occur due to natural or man-induced groundwater flow, but either way may result
Jan 1, 2007
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Cummins’ Diesel Engines Ready to Meet Global Clean Air Regulations
By Steve Kral
In the United States, the U.S. Environmental Protection Agency (EPA) is set to implement its Tier 2 air quality standards governing high-horsepower, off-road diesel engines. The regulations take effe
Jan 1, 2004
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Appalachian Operators Maintain Significant Production
By Henry A. Signore
The Appalachian coalfield, located in eastern Kentucky, Pennsylvania, Virginia and West Virginia, has been one of the most productive in the United States. Total production from the Appalachian coalfi
Jan 1, 1995
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Statistical Evaluation Of The Effect Of Conditioning Time And Slurry Concentration On The Flotation Performance Of Siliceous Phosphate
By S. Al-Thyabat
Conditioning of flotation feed is an important prerequisite for efficient flotation. This process depends on parameters such as conditioning time, slurry concentration and slurry pH. The objective of
Jan 1, 2008
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Cyanide Leach Process Bans: The Technical Side
By C. A. Young
Cyanide is a fast-acting, highly toxic substance but, at the same time, is deemed essential for sustaining life as well as our standard of living. In this manuscript, the facts about cyanide are pres
Jan 1, 2001
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The Potential Of GPS Guidance In The Mining Industry
Recent advances in GPS, machine guidance technology and telemetry allow an unprecedented level of control of surface mining operations. GPS technology can now locate the bucket of a shovel or the blad
Jan 1, 2004
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Social, Environmental And Governmental Issues Impacting The Uranium Industry
By Jon J. Indall
I. INTRODUCTION The challenge of moving the use of nuclear energy from military to civilian use was first issued by President Dwight Eisenhower in his December 8, 1953 “Atoms for Peace” speech deliv
Jan 1, 2007
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National Western Mining Conference Attendance Mirrors Industry’s Upswing
By Steve Kral
For a state whose roots are in mining, most Colorado residents probably do not realize that the industry still contributes heavily to the state’s economy. In 2005, the industry contributed, directly
Jan 1, 2006
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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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Development of Australia’s first major diamond discovery outlined
By Richard D. Lang
Introduction Argyle is located in the Kimberley region in northwest Australia (Fig. 1). It is a significant diamond discovery by world standards and is the first major diamond find in Australia. T
Jan 1, 1986
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A Thermodynamic and Environmental Assessment of Lanthanide Chloride Production from Bastnaesite
By A. Nivala, S. Ulgiati, M. Canino
Mining and processing of bastnaesite ore, (Ln)CO3F, for lanthanides extraction is investigated in this paper. This series of elements proved to be applicable for a wide range of high-tech uses. In spi
Jan 1, 2005