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Impact Of Groundwater Chemistry On Wall Rock Chemical Leaching And Pit Lake Character
By D. Richers
When modeling predictive pit lake chemistry, groundwater chemistry is integrated with the affected portions of the wall rock and chemistry of the lake in a complex series of mixing. Fractions of the s
Jan 1, 2012
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Coupled Role Of Sulphidizers And Xanthates On The Electrokinetic Property And Flotation Behavior Of Malachite
By K. Park
Coupled influence of sulphidizers and xanthates on the electrokinetic property and flotation behavior of malachite was systematically examined via electrophoretic mobility measurements and microflotat
Feb 27, 2013
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CIM and PDAC – South African Gold; Mining in a dot.com World
By Steve Kral
The mining industry has had three difficult years. Commodity prices have remained low and investor confidence in the industry has been shaken. And even though the Asian economy appears to be improvi
Jan 1, 2000
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Influence of blasting techniques on open pit economics
By H. G. Naidu, Raj K. Singhai, S. P. Singh
Introduction The economics of open-pit mining de¬pend heavily on the cost of overburden removal. It is necessary to maintain a pit slope as steep as possible. Steeper slopes lower the volume of overb
Jan 1, 1989
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Development Of New Process And Reagent For Flotation Of Graphite
By G. M. Rao, P. N. Deo
Graphite is soft and easily floatable but it is quite difficult to obtain high purity concentrate at coarse sizes. Chemical treatment can produce high grade concentrate but it is an expensive process.
Jan 1, 1995
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Health and Safety Challenges for China’s Mining Industry
By Jerry C. Tien
Mining in China dates back at least 4,000 years. Today, with no less than 103,000 metal/nonmetal mines and between 40,000 to 80,000 coal mines, China’s mining industry is undoubtedly the largest in t
Jan 1, 2005
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Designing, Scheduling And Managing Waste Rock Facilities - A Case Study On The Waste Rock Facilities At The Phoenix Mine, Nevada.
By V. Galla
Waste rock facilities (WRF) generally have a large footprint depending on the strip ratio the mine plan provides. Considerable planning is involved during the initial phase of the mine plan regarding
Jan 1, 2011
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Horizontal Air Blocking Shelf Reduces Dust Leakage From Surface Drill Shroud - Preprint 09-041
By J. D. Potts
Installation of a horizontal air blocking shelf around the inside perimeter of the surface mining drill deck shroud is proposed to improve dust capture. Without the use of this shelf, a strong coanda
Jan 1, 2009
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Sustainable Change of Coal-Mining Regions Mining, Metallurgy and Exploration (eb41200c-f89a-4073-aec3-fcdb45ccee3e)
By Jürgen Kretschmann
According to the model of product life cycles, the global coal mining industry is in the stagnation phase. The coal demand of the main consumer, China, has peaked in 2013 and is slowly declining. The
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Activation Mechanism of Lead Ions in the Flotation of Rutile Using Amyl Xanthate as a Collector Mining, Metallurgy and Exploration
By Qinbo Cao, Qianshan Peng, Heng Zou, Xingcai Yu
In this work, a new flotation strategy was proposed for the flotation of rutile. In this strategy, rutile was activated by Pb(NO3)2 and then floated with amyl xanthate (AX) as a collector at pH 8. Pb(
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Activation Mechanism of Lead Ions in the Flotation of Rutile Using Amyl Xanthate as a Collector Mining, Metallurgy and Exploration (4401b4da-c269-4538-8819-8ae624ce5432)
By Qinbo Cao, Qianshan Peng, Heng Zou, Xingcai Yu
In this work, a new flotation strategy was proposed for the flotation of rutile. In this strategy, rutile was activated by Pb(NO3)2 and then floated with amyl xanthate (AX) as a collector at pH 8. Pb(
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Fe-Mn crusts from the Central Atlantic
By José Mirão, Pedro Madureira, v Costa, Patrícia Conceição
"The exploration of seamounts south of the Azores during the EMEPC/Açores/G3/2007 campaign allowed for the collection of 30 Fe-Mn crusts from the Atlantis, Great Meteor, Small Hyeres, Irving and Plato
Sep 1, 2014
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Los Angeles Metro Gold Line Eastside Extension—Tunnel Construction Case History
By Christophe Bragard, Brett Robinson
This paper reflects the challenges encountered during the construction of the light rail tunnels under Boyle Heights, in Los Angeles, California. Equipped with two state-of-the-art EPB TBMs, the c
Jan 1, 2007
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Construction Of A TBM Launch Box In A Complex Urban Environment
By Vincent Tirolo
The proposed Second Avenue Subway is a new two-track subway line running from 125th Street and Park Avenue at the north, east along 125th Street to Second Avenue and south along Second Avenue to the F
Jan 1, 2013
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State Summaries ? Arizona
By N. Niemuth
Strong demand for copper in developing nations such as China and India, plus the additional demand for industrial minerals to supply the Arizona construction market, brought about a record-setting yea
Jan 1, 2008
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Targeting and Prioritizing Safety Interventions in West Virginia – Preprint 97-51
By J. M. Dean, R. L. Grayson, R. C. Althouse, M. J. Klishis, G. L. Winn
Using powerful database management software, nested-field analysis and microanalysis of narratives have been made of West Virginia accident data, resulting in a new approach for targeting and prioriti
Feb 24, 1997
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Single-Shell Tunnel Lining with Reinforced Concrete Rings: Critical Loads and Damage Prevention
By Fritz Grübl
Modern shield TBMs allow tunnel drives through almost any type of ground. Thanks to high elaborated technical measures, significant subsidence of the ground surface can be almost entirely avoided.
Jan 1, 2001
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A Field Study Of US Longwall Coal Mine Ventilation And Bleeder Performance
By S. J. Schatzel
Longwall coal mine operators in the US are required to ventilate multi-panel longwall districts but may have little or no knowledge about what happens to the ventilation air between the inlet evaluati
Jan 1, 2011
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Stability Investigations In Three-Dimensions Around A Tunnel In A Metal Mine In China
By P. H. S. W. Kulatilake
To exploit an underground mine effectively and safely, it is important to have a good understanding of the geotechnical behavior around underground excavations made in the mine. The aim of this study
Jan 1, 2012
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Industrial Minerals 2005 – Construction Aggregates
By T. J. Nelson
Natural aggregates, primarily stone, sand and gravel, are recovered from widespread, naturally occurring mineral deposits and processed for use primarily in the construction industry. They are mined,
Jan 1, 2006