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LURGl's Circulating Fluid Bed Roasting Process Improves Gold Recovery
By Bodo Peinemann
For more than 35 years Lurgi has been providing its fluid bed roasters on a worldwide basis. The current total annual capacity of the 250 Lurgi roasters approaches 26 million mt of sulphide minerals
Jan 1, 1990
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Tunneling Through Faults In Volcanic Rocks For The Construction Of The La Joya Project (Costa Rica)
By R. Grandori, L. Pellegrini
The construction of the La Joya hydropower plant (Costa Rica) was awarded by the Spanish power company, Union Fenosa, to the Italian Joint Venture formed by the companies SELI SpA and Ghella SpA. T
Jan 1, 2007
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Mongolia: Little Known Mineral Wealth
By Louis W. Cope
Mongolia is known in western countries as the location of rich dinosaur fossil fields. However, the country is even richer in mineral resources. The Ministry of Industry and Trade reports 6,000 mine
Jan 1, 2006
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Annual Review 1995 – The United States 1995
By D. Washington
The US economy and the demand for nonfuel minerals grew at lower rates in 1995 than in 1994. Demand for major metals, such as aluminum, copper and steel, was mixed but relatively stable. The buildin
Jan 1, 1996
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Evaluation Of Phosphate Depressants In The Phosphate/Silica System
By P. Zhang
The use of phosphate depressants in the cationic flotation of silica from francolite in the Florida phosphate industry is rarely practiced. The occasional use of gelatinized starch derivatives and pH
Jan 1, 2009
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Notes On The Efficacy Of Wet Versus Dry Screening Of Fly Ash
By B. Valentim
The methodology used to obtain fly ash subsamples of different sizes is generally based on wet or dry sieving methods. However, the worth of such methods is not certain if the methodology applied is n
Jan 1, 2008
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Design and Construction of Tunnel and Shaft Plugs
By James W. Marold
Tunnel and shaft plugs have been designed to assist in construction of new and rehabilitation of existing tunnels and shafts. Tunnel plugs have been used to provide construction access for side by sid
Jan 1, 2008
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INNOVATING MINING WITH SUSTAINABLE BUSINESS MODELS – THE PROFITABLE PATHWAY TO THE SOCIAL LICENCE TO OPERATE - SME Annual Conference 2023
By J. Kretschmann, H. Mischo, O. Drusche, S. Krause
Mining is and will be inevitable in spite of the increasing implementation of circular strategies. The energy transition and population growth will boost the demand for critical raw materials. It is t
Feb 1, 2023
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Construction of I-90 Highway Tunnels Under Boston’s South Station Rail Yard by Box Jacking
By Peter van Dijk, Gary Almeraris, Philip Rice
This paper describes the Contractor’s value engineering design and the construction of the Interstate I-90 highway tunnel sections under the South Station railroad yard in Boston, MA for the Central A
Jan 1, 2001
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Site Investigations And Geotechnical Assessment For The Construction Of The Deep Underground Science And Engineering Laboratory At The Former Homestake Mine
By Z. J. Hladysz
A Deep Underground Science and Engineering Laboratory (DUSEL) is being planned at the site of the former Homestake Gold Mine in Lead, South Dakota, under the sponsorship of the National Science Founda
Jan 1, 2011
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The application of vertically-mounted jet fans in ventilation shafts for a rail overbuild
By R. E. Ray
Compared to conventional fully ducted axial and centrifugal fan systems, jet fans can offer a number of advantages for control of smoke during fire emergencies and dilution of diesel engine exhaust pr
Jan 1, 2009
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A Dissolution Kinetic Model For Metal Powders A Case Of Varying Surface Area
By Kenneth N. Han, Peter Nam-soo Kim
A kinetic model for leaching of particulate metals in a batch system has been developed. The leaching mechanism has been analyzed by solving a series of ordinary differential equations relating hetero
Jan 1, 2005
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Mineral Resource estimation for the Chatham Rock Phosphorite Project
By Ray Wood, Rene Sterk, Robin Falconer, Sean Aldrich, Simon Nielsen
"The Chatham Rock Phosphorite project is situated 450 km east of New Zealand at approximately 350 to 450 m water depth. The deposit occurs as a thin layer of phosphatebearing glauconitic sand at the s
Sep 1, 2014
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Mining Engineering Education Initiatives in Australia
By Bruce Hebblewhite
Australia’s Minerals Tertiary Education Council (MTEC) has achieved several successes during its first three years of operation. This initiative was developed through the Minerals Council of Australi
Jan 1, 2006
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Rehabilitation of the Cape Creek Highway Tunnel Under Traffic
By Roberto J. Guardia, Tim Shell, Robert A. Robinson, Steve Rodolf
Our aging infrastructure includes numerous tunnels that provide easy access through topographic and societal obstacles. These tunnels are renewable resources that require periodic maintenance and reha
Jan 1, 2005
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Improved Leaching Performance Of Chalcopyrite By Microbial Cultures Subjected To Mutation
By J. Kang
To obtain microbial cultures with the ability to efficiently leach copper ion from chalcopyrite, microbial samples from acid mine drainage sites were mixed and then subjected to mutation using sodium
Jan 1, 2008
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Ambitious Endeavors in Mechanized Shaft Construction: A Case History of Two Mine Shaft Projects in Australia
By John Zeni
In Australia during the 1990s, Zeni Drilling took on several demanding shaft boring contracts. This paper describes the safety, operational, technical and environmental advantages derived through the
Jan 1, 2001
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Government Role and Influence in Mining
By Thomas V. Falkie
In bygone days, the mineral engineer spent most of his/her time on the technical aspects of designing, building, and managing mineral operations. In the last few decades, mostly since the 1960s, incre
Jan 1, 2008
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Using Dynamic Anisotropy To Improve Resource Estimation
By K. Zabrusky
Estimation of high grade epithermal vein deposits can present challenges in correctly representing the continuity of grade within an undulating structure. One solution to this problem is to use dynami
Feb 27, 2013
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Ground-Penetrating Radar for Karst Detection in Underground Stone Mines Mining, Metallurgy and Exploration (af91ef88-58ad-45be-8f21-58666827bf43)
By Jonathan Baggett, Nino Ripepi, Amin Abbasi, Richard Bishop, Juan Monsalve, John Hole
This work focuses on the operational and safety issues associated with karst voids in large opening underground mines. Issues include water inrush, structural instability, and engineering uncertainty