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The Relationship Between Tunnel Convergence and Machine Operational Parameters and Chip Size for Double Shield TBMs— A Case History of Ghomroud Water Conveyance Tunnel
By Jamal Rostami, Ebrahim Farrokh
Selection of tunneling method, specially the use of shielded machines for application in deep rock tunnels can be heavily impacted by presence of ground convergence and squeezing conditions. Tunnel co
Jan 1, 2007
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New Process For The Recovery Of High Grade Copper From Ammonical Solutions. - 1. - Summary Of The Process:
By Luis de la Pe[n]a Porth
The present process refers to a method for efficiently obtaining high purity metallic copper from copper ammonium sulfite. Essentially, this process consists of submitting the copper ammonium sulfite
Jan 1, 1974
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Study Of High MgO Blast Furnace Pellets
By J. A. M. Cano
An extensive research work was developed by Samarco Mineracao S/A to study the quality characteristics of blast furnace pellets produced with high content of MgO. Comparative blast furnace simulatio
Jan 1, 1991
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Methane Emissions And Airflow Patterns On A Longwall Face
By S. J. Schatzel
Coal mine longwall face ventilation is an important component of the overall mine ventilation system. Increases in the production rate due to higher capacity mining equipment tend to increase methane
Jan 1, 2012
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Tunneling Methods Under Low Cover Conditions
By Terry M. Tilley, Gregory P. Sherry
Purpose This is a unique project because the mining and tunneling industries have become highly mechanized and cannot normally accommodate a project where surface disturbance must be minimized or e
Jan 1, 2005
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Maximizing Return On Capital Projects
By J. Humphries
With today?s turbulent markets and unprecedented global opportunities, the need to optimize net present value and internal rates of return from capital investments has never been greater. To help addr
Jan 1, 2011
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Improving Real-Time Expert Control Systems Through Deep Data Mining Of Plant Data And Global Plant-Wide Energy Monitoring And Analysis
By L. B. Hales
Expert control of grinding and flotation plants has been successfully used in the minerals industry since the 1970?s. The earliest of these systems were written in a hard-coded fashion in FORTRAN, BA
Jan 1, 2012
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Production Of Huntite And Hydromagnesite With Flame Retardant Featured By Flotation
By O. Kangal
Flame retardant materials can be incorporated or applied to products, including plastics and textiles, to increase their resistance to fire. Incorporating a flame retardant in combustible materials an
Jan 1, 2009
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NATM Tunnels at Stanford Linear Accelerator Center, Menlo Park, California
By P. J. Doig
The LCLS project at SLAC will allow new insights into material properties, chemical reactions and biological processes. The project includes half a mile of new underground construction. Excavation in
Jan 1, 2008
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Automated Conditions Mining at Sylvite
By William G. Schultz
Sylvite of Canada, a wholly owned subsidiary of Hudson Bay Mining and Smelting Co., operates an 8000 TPD potash mine and refinery located nine miles North East of Rocanville, Saskatchewan. Prior to Hu
Jan 1, 1972
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Evaluation Of Silica Sand And Steel Shot For Superfine Grinding Of Coal
By O. A. Orumwense
The liberation of intimately disseminated impurities from the coal matrix often demands that the material be ground to a high degree of fineness. Similarly, some technologies for coal utilization requ
Jan 1, 1993
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Design of the Brightwater Conveyance Tunnels
By Leon Maday, Dan L. Pecha, Jeremy Johnson, Daniel N. Adams
The Brightwater conveyance system includes 26 km of tunnels, a 130 mgd pump station, 2 km of micro tunnels, and a 2.4 km outfall. The tunnels extend from Woodinville to Puget Sound through varying soi
Jan 1, 2005
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Methods For Removing Arsenic From Aqueous Systems
By L. R. Moore
Arsenic is among the list of major contaminants in mining aqueous waste streams. Though the elemental form is toxic, the aqueous oxyanions are more so. The most common forms of arsenic released duri
Jan 1, 2012
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Discussion - Using Geostatistics to Predict the Characteristics of Washed Coal
S.L. Barua and Y.C. Kim M. Armstrong's paper is very interesting and can be regarded as a pioneering work of applying geostatistics on washed coal. The density levels used in her study are uni
Jan 1, 1985
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A Patent Licensing Regime for the Development and Protection of the Area’s Resources
By Yao Zhou
Under the United Nations Convention on the Law of the Sea (UNCLOS), the international seabed area (Area) and its resources are the common heritage of humanity (CHH). Patent rights can be incompatible
Sep 1, 2014
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Engineering Geology Of The Mica Underground Powerplant
By Douglas D. Campbell, Alan S. Imrie
INTRODUCTION Mica Dam is located on the Columbia River just downstream of the "big bend" of the Columbia, where it leaves the Rocky Mountain Trench and begins to flow southwards, approximately 85 m
Jan 1, 1976
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Performance Of The Lorraine Mine Site Cover To Limit Oxygen Migration
By Bruno Bussière, Michel Aubertin, Anne-Marie Dagenais, Johanne Cyr
A five steps remediation program was commissioned in 1998 for the acid generating Lorraine mine site, located in the Témiscamingue region, Quebec, Canada. It included, as the main expenditure, a cover
Jan 1, 2005
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Interaction Of Grade And Metallurgy Simulations In Assessing Uncertainty For Ore Routing Determinations In The Gold Quarry Deposit
By M. Baumann
Introduction Gold Quarry is one of the largest gold deposits in Nevada, located along the Carlin Trend, approximately seven miles north of Carlin, NV. Owned and operated by Newmont Mining Corporati
Jan 1, 2007
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Conversion Of A Tailing Impoundment To A Freshwater Reservoir, The Eagle Park Reservoir Project, Climax Mine, Colorado
By J. L. Cupp, R. C. Ford, B. R. Romig
The Climax Molybdenum Mine, located near Leadville, Colorado, is the site of a lengthy mining history spanning more than 80 years. In the 1960’s, extraction of molybdenum from oxide ore located adjac
Jan 1, 1999
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Ergonomic Interventions At Unimin (a8427aad-fa40-4708-ba18-5e74f8b6935f)
By A. Mayton, W. Porter, A. O’Brien
In 2004, management at Unimin’s Gleason, TN operation began implementing ergonomic interventions specifically targeted to reduce risk of musculoskeletal injuries (MSIs). Together with corporate and s
Jan 1, 2007