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Technology News - Urethane Foam Stops Metal Corrosion At Salt Mine
The conveyor housing's corroded, exposed metal- deck was cleaned and cocooned to prevent renewed corrosion, at less than the cost of replacing the structure. And the process did not require opera
Jan 1, 1997
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The two Faces of Smoke
By Charles D. Litton
This paper presents a description of the hazards of smoke from fires, the detectability of smoke using smoke sensors, and the operational characteristics of such detectors. It places in perspective th
Jan 1, 1992
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Geometric and Physico-chemical Properties Determining Sulfide Oxidation Rates in Waste Rock Dumps
By Alan M. Ritchie, Paul Miskelly
The 2-D code FIDHELM has been used to simulate conditions in piles of pyritic material with vertical dimensions of 20 to 70 m and a horizontal dimension of 500m. Those properties of the pile and its e
Jan 1, 2000
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The Method Of Bullflex® - An Entire New Approach In Making Steel-Rib Supports For Roadways Far More Effective
By Werner A. Dürrfeld
The Bullflex® System was introduced as a substitute for timber and debris lagging in mines and to create an in-situ early-stage interlocking effect between steel supports and the rock wall. As deplace
Jan 1, 1981
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Coal desulfurization by bacteria
By S. K. Kawatra, S. Bagley, T. C. Eisele
To meet federal air pollution guidelines, it is necessary to remove a considerable quantity of sulfur from many North American coals. This may be accomplished by oxidizing the sulfur to water soluble
Jan 1, 1988
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Evaluation of Toxicology of Reagents in the Mining Industry
By Marvin A. Ph. D. Friedman
The following paper describes an overview of evaluations for assessing the potential hazards associated with handling newly developed reagents used in the mining industry. Important factors in determi
Jan 1, 1994
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John Doe Bloopers, Blunders, and Scams
By William F. Riggs
The name of this symposium speaks for itself in the connotation normally assigned to the term 'political. "In this paper, various donors have contributed their stories of metallurgical bloopers,
Jan 1, 2001
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Aggregation And Salt Flotation Of Talc
By Antonieta Middea, Rupen Adamian, Fernando F. Lins
This work presents the results obtained with aggregation of fine talc (-19 m), a naturally hydrophobic mineral, in the presence of KC1 solutions. The classical DLVO theory describes well the aggregati
Jan 1, 1995
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Cationic Flotation Reagents for Mineral Beneficiation
By David L. Gefvert
A general review of the role of cationic flotation reagents in the beneficiation of phosphate, iron, and potash ores. The three major types of cationic collectors-amines, ether amines, and condensates
Jan 1, 1986
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The Development Of A Mine Systems Engineering Program
By R. V. Ramani
This paper is based on the thesis that the demand for computer-oriented mining engineers will continue to sharply increase in coming years. It presents the philosophy behind the development of a mine
Jan 1, 1982
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Industry, Government Review Mine Safety Procedures
Accidents that resulted in 16 deaths in three West Virginia coal mines, two in Kentucky and one in Utah have government and industry re-evaluating current safety regulations. Even though U.S. mines co
Jan 1, 2006
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The Recirculation Hoax
By John A. L. Campbell
Are safety concerns justified regarding the potential for a gas explosion due to recirculation when a scrubber is used on a continuous miner? The role of a respirable dust scrubber on a continuous min
Jan 1, 1987
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Laboratory Studies Of High Speed Tunnel Boring
By Jerry Dollinger, Levent Ozdemir
An extensive series of laboratory cutting tests using linear and rotary cutting machines were carried out with the objective of investigating the feasibility of achieving very high rates of penetratio
Jan 1, 1987
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Phosphate Rock Beneficiation Practice in Florida
By Ronald L. Wiegel
The United States produces approximately 40 mil- lion tons of phosphate rock per year. Most of this rock is converted to diammonium phosphate and used as a fertilizer component for the domestic and in
Jan 1, 1999
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Simulation Studies On Truck Dispatching - Introduction
By F. L. Wilke
Truck haulage costs form a major part of the total mining costs in hard rock open pit, mining operations. In order to minimize these costs one has to - determine the optimal truck fleet (type, size
Jan 1, 1982
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Discussion – Paleoplacers of the Witwatersrand Basin – Mining Engineering, Vol. 42, No. 2, pp. 195-199 – Minter, W. E. L.
By E. S. Cheney
Minter (1990) has provided an excellent summary of the sedimentology and theories of origin of the Witwatersrand paleoplacer Au/U deposits. However, recent stratigraphic, metamorphic and structural-te
Jan 1, 1991
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When to Use Water Only Cyclones
By Mark P. Schmidt, Douglas D. Schlepp
Water Only cyclones were introduced into commercial operation for cleaning of metallurgical and steam coal around 1950. Since its original introduction as a primary cleaning device, the employment of
Jan 1, 1988
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Adsorption of silver thiourea on activated carbon
By H. J. Sohn
Systematic studies were carried out on the adsorption of the silver thiourea complex on activated carbon. The experimental isotherm data fit the Freundlich isotherm equation. The adsorption rates incr
Jan 1, 1987
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Solving Operation And Production Problems At The Soldier Canyon Mine Degasification Project
By Jeff Schwoebel, Dale Evans, Boyd Tangren
The Soldier Canyon Mine (the "Mine") degasification project demonstrates the ability to commercially recover coalbed gas to reduce overall mine costs associated with methane drainage. Gas is recovered
Jan 1, 1993
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Finding The Mining Sequence And Cutoff-Grade Schedule That Maximizes Net Present Value
By F. Seymour
A dynamic programming algorithm is presented that takes a series of nested phases, a fixed mining-rate schedule and a fixed plant-production-capacity schedule, and, from these, finds the mining and cu
Jan 1, 1996