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Mine Drainage Pollution Control By Reverse OsmosisBy Roger C. Wilmoth
The most common method of treating mine drainage to prevent water pollution consists of neutralization and aeration. This process removes the acidity, iron, aluminum, and some other heavy metals, but
Jan 1, 1972
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Applications of LiDAR in Underground MinesBy Emily Muto
LiDAR technology has made it possible to map large areas of underground mines accurately and rapidly in three dimensions. MSHA Technical Support began implementing LiDAR technology in conjunction with
Jun 25, 2024
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Discrimination and location of seismic events for characterization of rock mass response near a dyke - RASIM 2022By Guangyao Si, Ismet Canbulat, Xun Luo, Yi Duan
Routine analyses of seismicity and event locations are essential for coal burst risk management, especially in the presence of unfavorable and complex geology. In an Australian longwall coal mine, a s
Apr 26, 2022
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Radial pick cutting performance in dry and saturated sandstone - SME Transactions 2012By L. S. Gertsch, M. Z. Abu Bakar
Linear cutting tests of a porous sandstone with a radial drag pick show that saturation of rock with water can increase the specific energy of fragmentation. This appears to be due, in this case, to a
Jan 1, 2012
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Research In The Mineral Aggregate Industry - IntroductionBy F. A. Renninger
The mineral aggregate industry is the world's largest mining and processing endeavor, yet it is graced with little of the romance or public awareness that accompanies mention of gold, silver, iro
Jan 1, 1968
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Borehole Mining Of Deep Phosphate Ore In St. Johns County, FloridaBy George A. Savanick
Borehole (slurry) mining, in which a tool incorporating a water-jet cutter and a downhole slurry pump mines phosphate through a borehole, was field tested in northeastern Florida as part of a Bureau o
Jan 1, 1983
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Examples Of Routine Computer Processing In Applied Mineral Exploration GeophysicsBy William O. Rasmussen
Exploration requires processing highly varying kinds and amounts of geologic information. Successful discovery dictates that this be done quickly with maximum confidence. Most phases of exploration ar
Jan 1, 1969
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Migration Control And Remediation Of Acid Mine Drainage, Part I: Ground Water RemediationBy R. J. Bridwell
Acid mine drainage (AMD) occurs in high sulfur coal and heavy metal mining environments. We show remediation methods using 3D numerical ground water flow models and chemical kinetics of pyrite oxidati
Jan 1, 1994
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Development And Calibration Of An Integrated Hydrologic ModelBy R. M. Powers
The Florida Institute of Phosphate Research (FIPR) has funded a four-year research project to develop a computer model 'which will predict the hydrologic impacts of phosphate mining on surface an
Jan 1, 1990
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Methods To Operate Successful LongwallsBy Dr. Ing. Hermann Boldt
The Bituminous Coal Mining Industry of the Federal Republic of Germany produces nearly 100 million t/yr of clean coal. The largest coal mining area is the Ruhr District with dimensions of 100 x 40 km
Jan 1, 1977
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Geostatistical Analysis Of Dynamic Transmissivity Conditions During In Situ Copper LeachingBy Michael J. Friedel
As part of a study aimed at understanding the hydrology of in situ leach mining (ISLM), the Bureau of Mines, in cooperation with the Cyprus Casa Grande Corporation and the University of Arizona, is in
Jan 1, 1992
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Particle Interactions In High Ionic Strength SolutionsBy J. D. Miller
The recent non-equilibrium electro-phoretic mobility measurements by laser-Doppler electrophoresis coupled with the stability and prevalence of collector colloids in soluble salt flotation systems sug
Jan 1, 1996
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A Novel Hybrid Cementitious Material for Pumpable Roof Supports: From Laboratory-Scale Investigation to Full-Scale ProductionBy Arash Nikvar-Hassani, Lianyang Zhang
To address the drawbacks of the conventional portland cement/fly ash (PC/FA)–based cementitious material currently used in practice to construct pumpable roof supports (PRSs), a novel cementitious mat
Jul 1, 2023
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The Influence Of Oxygen Defect States On The Surface Charge Of Alkali HalidesBy S. Veeramasuneni
The sign of the surface charge for alkali halides in their saturated brines has been established from non equilibrium electrophoresis measurements and on this basis the flotation response of alkali ha
Jan 1, 1996
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Observations On The Association Of Gold Mineralization With Organic Matter In Carlin-Type OresBy D. M. Hausen
Carbonaceous gold ores are ubiquitous to virtually all of the Carlin-type gold deposits along the Carlin gold belt in north central Nevada, representing the unoxidized "zones" of presumably extinct th
Jan 1, 2013
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Modeling The Rapid Flotation Of CoalBy F. J. Susko
The Bureau of Mines applied a flotation model to the hydrodynamics of the Bureau-developed rapid flotation system. Rapid flotation is a process which separates the bubble-particle attachment and froth
Jan 1, 1993
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Flocculation Kinetics Of A Bituminous Coal ? IntroductionBy K. N. Han
Coal is becoming increasingly important as a major energy source in the face of the world's depleting energy mainly based on oil reserves. Coal is by far the most abundant fossil fuel both in the
Jan 1, 1985
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On-Stream Composition Analysis of Mineral SlurriesBy S. K. Kawatra, Harrison R. Cooper
In the last 30 years, on-¬stream slurry analyzers have proven to be of great use in the control of mineral processing circuits. This review discusses the two most popular methods, x-ray fluorescence a
Jan 1, 1986
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Flash Smelting At Magma Metals CompanyBy T. Gonzales
Magma Metals Company operates an Outokumpu Flash Furnace, four Peirce-Smith Converters and two Anode Casting Wheels supported by six Anode Vessels. Process gasses from the Flash Furnace and Converters
Jan 1, 1992
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Basic Iron Sulfate ? A Potential Killer In The Processing Of Refractory Gold Concentrates By Pressure OxidationRefractory gold concentrates often contain submicroscopic gold that is encapsulated within the crystal matrix of iron sulfide minerals, such as pyrite, pyrrhotite and arsenopyrite. To recover the gold
Jan 1, 2010