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New Projects Highlight Minnesota?s Mining Industryglobal mining boom and in-creased demand for iron ore has lead to a resurgence in the mining industry in Minnesota. At the combined 81st Annual Minnesota Section of SME Meeting and 69th Annual Univers
Jan 1, 2008
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The Relationship Between Porphyry Copper Deposits And Post-Orogenic VolcanismBy Paul Cameron Gilmour
Geologically, as distinct from economically, "porphyry copper (molybdenum, gold, silver, etc.) deposits" might be defined as large, disseminated and/or stock-work occurrences of copper-minerals, gener
Jan 1, 1972
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North American Tunneling 2010 Conference HighlightsEven though the economy of the United States remains in recession ? or not, depending on which economist you listen to ? muicipalities still need improved transportation, water and wastewater transit
Jan 1, 2010
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Investigations On Recovery Of Hematite From Two Different Banded Iron Ores By FlotationBy B. Das
Hematite floatability from two low grade banded iron ores of India, namely banded hematite quartzite (BHQ) and banded hematite jasper (BHJ) using fatty acids and amine as the collectors is investigate
Feb 27, 2013
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Flotation Plant InstrumentationBy Dexter C. Hatch
At MacIntyre Development of the National Lead Company, Taha s, New York,, the flotation plant was set up to recover ilmenite from the finer size fraction of the ore that cannot be efficiently treated
Jan 1, 1962
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Bleeder Entry Evaluation Using Condition Mapping and Numerical ModelingOne of the most common critical areas of longwall mining in terms of ground stability are the gateroad and bleeder entries. These critical entries provide much-needed safe access for miners and allow
Jan 7, 2020
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Environmental and Mineral Exploration System Integration: Promoting Capture of Quality Environmental Data from the OutsetBy Tom Dettweiler, Robina Sharpe, Wright. Michael
The International Seabed Authority and a number of countries have or are in the process of developing environmental impact assessment guidelines and legislation for seafloor mineral development. The f
Sep 1, 2014
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Justifying API Bentonite Rheological Behavior Through Its Forming Size Fractions Mining, Metallurgy and Exploration (8673045d-721a-4112-8198-a3a9a24151ef)By A. A. El-Midany, R. M. Farag, A. M. Salem, S. E. El-Mofty
Bentonite represents one of the main players in the stability of the drilling mud. Its particle size and particle size distribution affect the physical properties of the drilling mud especially the rh
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Mining And Enviromining Law For Industrial Minerals And RocksWith the advent of the environmental "green" movement of the 1960s, eventually leading to Earth Day 1970, Congress responded by passage of the National Environmental Policy Act (NEPA), 1970. NEPA gave
Jan 1, 1994
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Platinum experts predict demand could reach 93 t (3 million oz) despite price fluctuationsFor the third successive year it appears that demand for platinum will exceed supplies of newly-mined metal, forecasts Johnson Matthey in its "Platinum 1987 Interim Review." Based on data available
Jan 2, 1988
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Thermal Exposure Limit in a Simulated Refuge AlternativeBy C. D. Ashley, X. P. Garzon-Villalba, R. M. Lopez, T. E. Bernard
Federal standards for refuge alternatives (RAs) mandate that they not exceed a Steadman apparent temperature (AT) of 95 °F (35 °C) at an assumedmetabolic rate of 325W, a limit that appears to be arbit
Nov 8, 2019
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Infrastructure in mining industries: A geopolitical and investment challengeBy M. T. Ansari
"This article explains the ways in which investment on mining infrastructure is a geopolitical issue. It discusses the effect of installing sufficient infra structure to get the product to the world m
Jan 1, 2011
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Practical Challenges For The Mine: Precious Metals Accounting And ReconciliationBy Will Jansen
When Enron rocked the United States with its Titanic-sized financial accounting scandal, miners and metallurgists were probably too busy on the mine sites in remote locations to wonder about its rippl
Jan 1, 2009
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Lithologic Controls On SubsidenceBy Jr. Abel
Subsidence is controlled by a complex combination of mining and geologic factors. For example, a world-wide compilation of data shows that, as the percentage of shale in the overying rock mass decreas
Jan 1, 1980
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Cincinnati Features Aggregates and Industrial Minerals ProgrammingThe 2003 SME Annual Meeting and Exhibit will take place Feb. 24-26 in Cincinnati, OH. The meeting will feature a host of special symposia and programming geared toward the industrial minerals and agg
Jan 1, 2003
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Direct Pressure Alkaline Leaching of Scheelite Ores and Concentrates Mining, Metallurgy and Exploration (Springer)By António Fiúza, Anthony Danko, Patrícia Leitão, Aurora Futuro, Cristina Vila, Lurdes Dinis
The average global recovery rates for processing scheelite ores by physical methods are normally in the range 50 to 70%, and it is problematic to attain a minimum grade of 60% WO3 in the concentrates
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Comparison Of Mine Ventilation Simulation SoftwareVentilation network modeling in mine planning dates back at least three decades, but it is not widely accepted and/or practiced until the last decade, thanks to the advent of modern computers with the
Jan 1, 2012
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Upgrading of Phosphate Fines by Fatty Acid Flotation Using Amylase Enzyme as a Surface Modifier (Mining, Metallurgy & Exploration) (8827c093-1c5b-4a9c-b3fd-b59e256d9af5)By K. E. Yassin, A. Yehia, M. Amar
Phosphate fines (size ≤ 45 μm), from the Red Sea Region, Egypt, were subjected to beneficiation process to recover the phosphorite grains from such fines. The sample is characterized by low P2O5 conte
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Application Of Background Oriented Schlieren (BOS) For The Qualitative Analysis Of Flow Through A RegulatorThe schlieren technique describes an optical analysis method designed to enhance light distortions caused by air movement. The ability to visualize air flow has significant implications for analyzing
Jan 1, 2011
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Satisfying information requirements on mineral extraction by applying Earth Observation methods: First results from EO-MINERSBy W. E. Falck, A. Usubiaga, J. Spangenberg, P. Schepelmann, S. Šolar, D. Wittmer, F. Blanchard
The extraction and processing of mineral resources may be accompanied by environmental impacts. In spite of technological advancements, the enormous increase in production volumes within the last deca
Jan 1, 2011