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Examining Trends in Individual Risk Factors: Organizational Approaches to Emergency Management
By M. E. Ryan, C. L. Hoebbel, E. J. Haas
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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Spectroelectrochemistry Of Enargite I: Reactivity In Alkaline Solutions
By R. N. Gow
The presence of enargite (Cu3AsS4) is problematic in gold processing because it is environmentally hazardous due to its arsenic content but also because it is double refractory causing both cyanide an
Feb 27, 2013
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Stability Of Open Stopes Intercepted By Graphitic Shears At Ashanti Gold Fields Company Ltd., Obuasi Operations In Ghana
By A. Adu-Acheampong
A geotechnical study was conducted to identify the cause(s) of stope instability at the Ashanti Mine (Obuasi, Ghana). As part of the investigation, laboratory testing of rock was performed and the roc
Jan 1, 2003
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Expansion And Modernization Of An Iron Ore Pelletizing Plant In Northern Sweden
By M. Ahrens
The paper describes the main drive systems of an iron ore pelletizing plant and related important design aspects. It is shown how today?s drive systems provide the desired flexibility for the process
Jan 1, 2008
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Wet Autogenous Grinding In Tumbling Mills ? 1. Introduction
By Marcus Digre
The autogenous grinding method has been progressively employed in mineral dressing plants during the last 15 years. The term has been used with somewhat different meanings (1), (2), (3). In this paper
Jan 1, 1970
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An Investigation On The Surface Chemistry Of Some Rare Earth Minerals During Flotation By TOF-SIMS (I-Bench Scale Tests)
By S. C. Chelgani
The Thor lake deposit is a world class resource of rare earth (REE) metals and minerals in Canada. Development work to optimize a REE mineral recovery process flow sheet is underway, however, given th
Feb 27, 2013
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Discriminating between different genetic types of marine ferro-manganese crusts and nodules based on rare earth elements and yttrium
By Andrea Koschinsky, Akira Usui, Michael Bau, Katja Schmidt, James Hein, Thomas Kuhn
Marine ferro-manganese (Fe-Mn) crusts and nodules are metal-rich chemical sediments that are archives of paleoceanographic proxies and potential metal resources and targets of deep-sea mining. Traditi
Sep 1, 2014
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Factors in the Variability of Measured Surface Settlements over EPB Driven Tunnels in Soft Clay
By S. Boone, J. N. Shirlaw
INTRODUCTION Soft, near normally consolidated clays generally provide ideal conditions for tunneling using Earth Pressure Balance (EPB) shields. It is easy to turn the clay into a low permeability,
Jan 1, 2007
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Helping Banks To Manage Mineral Land Trusts
By S. M. Pickering
Banks frequently manage large privately owned mineral land trust accounts for estate heirs. The bank has a fiduciary obligation to follow the “Prudent Man Rule”, which requires that trust properties
Jan 1, 2002
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Tunnel Interaction: Hydraulic, Mechanical, And Hydromechanical Approach
By John Kinneen, Sunghoon Choi, Arne Fareth, Edward S. Barboe, Kyle R. Ott
A new water treatment plant is to be constructed for a portion of the water supply system of New York City. The project includes construction of new water conveyance tunnels crossing perpendicular and
Jan 1, 2007
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Soil Deformation Analysis During TBM Excavation: Comparing Three Different TBM Technologies Used During the Construction of the Toulouse Metro Line B
By Richard Kastner, Emilie Vanoudheusden, Fabrice Emeriault, Jacques Robert
INTRODUCTION The subway line B of Toulouse (France) has been realized with three different tunnel boring machines (TBM) techniques: Contracts 2 and 5 are excavated with earth-pressure balanced TBM
Jan 1, 2007
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Engineered Pumpable pHoam?: A New Innovative Method For Mitigating Ard
If one can embrace the medical analogue, much of the mining industry currently suffers from a massive bacterial infection. When pyrite-bearing or sulfide-bearing rock formations, tailings, or mine was
Jan 1, 2012
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Recovery Of Phosphate Values From Benefication Wastes
By N. Abdel-Khalek, A. Youssef
The tailings from beneficiation of Florida phosphate ore contain considerable phosphate values. These tailings are currently discharged into large disposal areas. More than three million tons of P2O5
Jan 1, 2002
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The role of coal and CCS in energy policy and sustainable development of Turkey: Is it compatible to the EU energy policy?
By N. Sahin, K. Baris, A. Ozarslan
This paper aims to assess the current and future role of coal in energy strategy of Turkey and evaluates the compatibility of the policies to the EU energy policy and strategy. The Turkish government
Jan 1, 2011
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Improving Screen-Bowl Centrifuge Performance
By T. Burchett, F. Stanley, K. McGough, G. Luttrell
The vast majority of U.S. coal preparation plants utilize screen-bowl centrifuges to dewater their fine clean coal products. In light of this popularity, researchers at Virginia Tech have engaged in a
Jan 1, 2006
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Longwall-Induced Ground Movement at a Shale Gas Well Site Located in a District Barrier Pillar—FLAC3D Modeling Results and Interpretation
This paper evaluates the effect of longwall mining on a cluster of unconventional shale gas wells located in a district barrier pillar between a current longwall panel and the future panel north of th
Jan 7, 2020
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Effects of Longwsll Subsidence on Escarpment Stability
By Valois R. Shea-Albin
Increasing pressure from State and Federal agencies to mitigate mining-induced subsidence damage to overlying structures has presented a unique problem to the coal industry in the western United Stat
Jan 1, 1986
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Characterization Of Copper Flotation Products Utilzing The JKMRC/FEI Mineral Liberation Analyzer (MLA)
By D. Brosnahan, J. Gathje
Newmont Metallurgical Services (NMS) recently acquired a Scanning Electron Microscope (SEM) with a JKMRC/FEI Mineral Liberation Analyzer (MLA). With the MLA software package, raw particle image and X
Jan 1, 2007
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Efficient Separation of Trace Muscovite within the Surface/Interface of Quartz Grains from a Hydrothermal Deposit by Oxidizing Calcination and Catalytic Pressure Leaching Mining, Metallurgy and Exploration
By Xun Zhang, Hang Qiu, Andrea R. Gerson4, Shaomin Lei, Yubiao Li, Yu Meng, Zhenyu Pei, Min Lin
Efficient separation of trace muscovite from the surface/interface of quartz grains was accomplished during oxidizing calcination and catalytic pressure leaching of the hydrothermal quartz. Experiment
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Modeling The Influence Of Slurry Temperature On Gold Leach And Adsorption Kinetics At The Fort Knox Mine, Fairbanks, Alaska
By Eric M. Hill, Daniel E. Walsh, Hsing K. Lin, John T. Hollow
The Fort Knox Mine is located in Alaska’s interior where the average ambient air temperatures range from -24°C in January to 16°C in July. The mill processes a free milling gold ore utilizing both a
Jan 1, 2005