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Synthetic rutile from a low-grade titania slag using sulphation-roasting process
By I. M. Morsi, S. Z. El-Tawil, O. A. Fouad, K. A. El-Barawy, M. B. Morsi, M. M. Nasr
Upgrading of a low-grade titanium slag (~55% TiO2) with high silica, calcia, magnesia and iron contents has been studied using sulphation roasting technique using SO2/air gas mixture followed by hydro
Jan 1, 2005
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An Active Proximity Warning System For Surface And Underground Mining Applications
By W. H. Schiffbauer
NIOSH has developed an active proximity warning system called HASARD (Hazardous Area Signaling and Ranging Device) for warning workers as they approach known dangerous areas around heavy mining equipm
Jan 1, 2001
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Minnesota Iron Mining Industry Looks at Change
By William R. Yernberg
The combined 76th Annual Minnesota Section of SME meeting and 64th Annual University of Minnesota Mining Symposium were held April 8and 9, 2003, in Duluth, MN. This year’s theme was “Stakeholders, Par
Jan 1, 2003
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Selective Copper Recovery with HCl Leaching from Copper Oxalate Material Mining, Metallurgy and Exploration (d35b21fb-0dcb-4cd4-94b9-4575e3b19bb0)
By Hasan Nizamoğlu, Z. Abidin Sarı, Aslıhan Demiraslan, M. Deniz Turan, Tolga Depci
In this study, recovery of copper from solid material (obtained by leaching of chalcopyrite with oxalic acid in the presence of hydrogen peroxide) with a copper oxalate structure was carried out selec
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Exploratory Shafts For The Nuclear Waste Repository In Basalt
By Birger Schmidt
INTRODUCTION Conceptual design of the first Exploratory Shaft (ES-I) for the Nuclear Waste Repository in Basalt (NWRB) began in July 1981; detailed design began in February 1982, and was largely co
Jan 1, 1987
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Mining in Cuba
By Louis W. Cope
Since its discovery, Cuba has been called the “Pearl of the Antilles.” The country remains that, albeit a little tarnished these days. In Havana, many of the buildings are being refurbished, while s
Jan 1, 2003
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New Developments In Plastics Separation
By J. I. Schoenherr, G. Schubert, F. Demczenko
The currently known and used plastics and rubber recycling or sorting processes cannot be applied efficiently and economically due to large amounts of fine bulky materials (<3 mm). These wastes are mo
Jan 1, 2002
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Centrifugal Concentrators -A New Era In Gravity Concentration -The Experience Of CVRD Research Center
By E. Costa Silva
Among the methods of mineral processing, gravity concentration methods are, probably, those which have lower costs, higher capacities and lower operational complexity. In order to be really effective,
Jan 1, 1999
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61st Iteration of MINExpo Upbeat, Optimistic
By Tim O’Neil
“America’s mining industry brings good jobs to communities across America and provides the energy, minerals and equipment that are vital to our economic security and our way of life.” That was the
Jan 1, 2004
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Mining Applications Of Small Disc Cutters
By J. E. Friant
Until 1956, drill and blast was the only way to excavate rock. In that year, a tunneling machine using disc type cutters economically bored a small Toronto tunnel. Its amazing 105 ft/day set a new w
Jan 1, 2002
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Pillar And Roof Bolting Design Under Conditions Of Weak Roof And Multi-Seam Interaction - A Case Study
By Y. Q. Zhang, S. S. Peng
Numerical modeling was used to design the pillars and bolting plan for a mine with weak roof and multi-seam stress condition. Previous mining experience, pillar/roof yielding and in-situ horizontal st
Jan 1, 2004
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Multimedia Training Applications In The Mining Industry
By M. Karmis, S. K. Weisiger
The traditional method for training personnel in the mining and other heavy industries has been face-to-face, either via a lecturer in a classroom or through an apprenticeship. With the advent of appl
Jan 1, 2001
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Practical Geostatistics At Newmont Gold: A Story Of Adaptation
Newmont Gold's methods for deposit modeling vary, depending on geology, mining and processing methods, economic feasibility and availability of historical information. It is argued that successfu
Jan 1, 1998
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The Application Of Cathodoluminescence Microscopy To The Study Of Carbonatite-Related Fluorspar Ores, Host Rock Carbonatites, And Beneficiation Products At Okorusu, Namibia
By R. D. Hagni, P. A. Shivdasan
Cathodoluminescence microscopy (CLM) is uniquely applicable to the study of carbonatite-related fluorspar ore deposits. The mineralogy of the carbonatites, sodic and potassic fenites, marbles, quartz
Jan 1, 2001
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Current State Of Disc Cutter Design And Development Directions
By Joe Roby
Rolling disc cutters are the business end of hard-rock and mixed-face tunnel boring machines (TBMs). Since their first successful employment on a TBM more than 50 years ago, disc cutter technology ha
Jan 1, 2009
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Piedras Verdes: Mexico?s Newest Copper Mine
By P. J. Rua
The Piedras Verdes copper mine is a new run-of-mine (ROM), heap leach, solvent-extraction/electrowinning (SX-EW) operation located 21 km (13 miles) north-northwest of the town of Alamos in the state o
Jan 1, 2008
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Clay Binder Enhanced Extraction Of Bitumen From Canadian Oil Sand
A clay binding agent has been investigated to enhance flotation recovery of bitumen from Canadian high fines oil sand in the Clark Hot Water Extraction (CHWE) process. Selective adsorption on fine par
Jan 1, 2012
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Field Application of NTH Fracture Classification at the Second Manapouri Tailrace Tunnel, New Zealand
By Don F. Macfarlane
This paper describes the field application of the NTH fracture classification to rock encountered in the construction of the 9.6 km long, 10m diameter, Second Manapouri Tailrace Tunnel. Excavation of
Jan 1, 2008
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Copper Heap Leach Pad Performance: Geotechnical Lessons Learned Evaluation Of Several Heaps After 3 Plus Years Of Service
By C. J. Burkhalter, H. Andrade, T. C. A. Gardner, J. P. Campbell
During the 1990’s several copper heap leach facilities treating crushed and agglomerated oxide and sulfide ore were constructed in South America. The majority of these facilities have been in operatio
Jan 1, 2002
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Tunneling at Hollywood Reservoir
By D. Olsen, S. Cole, J. Strid, G. Colzani
This paper focuses on the underground tunnel work at the Hollywood Water Quality Improvement Project (HWQIP) in Los Angeles, CA. The HWQIP is being constructed to provide a water distribution system t
Jan 1, 2001