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Foliation Thickness and Mica Grain Size: Two New Ways to Subdivide the Otago Schist, Zew Zealand
At a regional scale, the Otago Schist has been divided into textural zones, metamorphic zones, structural transposition zones, and terranes and lithologic associations. Each of these subdivisions reve
Jan 1, 2001
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Nautilus Minerals - Commercializing Submarine Massive Sulphide Systems
By Michael Johnston
Nautilus Minerals is exploring for high-grade gold, silver, copper, and zinc-rich submarine massive sulphide deposits (SMS) within the territorial waters of the sovereign state of Papua New Guinea.
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Optimizing Performance at the David Bell Mine Concentrator
By K. Meyer
"The largest cost centres of the David Bell Mine concentrator are grinding, leaching and effluent treatment. Optimizing results during the 6th year of operation are listed below: o SAG mill slurry den
Jan 1, 1991
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Mining Company Reporting Standards ù The South African Experience
South Africa has joined the league of other major Western World countries by officially adopting its own code for public reporting of Mineral Resources and Mineral Reserves. The recently published Sou
Jan 1, 2002
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Effects of Stoichiometry on Boron Carbide Production Via Self Propagating High Temperature Synthesis
By Murat Alkan
In this study, a self-propagating high-temperature synthesis (SHS) and following acid leaching techniques were carried out to produce boron carbide (B4C) powder. First, B2O3 was obtained through calci
Jan 1, 2009
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Effect Of The Dip And Excavation Orientation On Roof Stability In Moderately Dipping Stone Mine Workings
By A. T. Iannacchione
Underground limestone mines typically use the room-and-pillar method of mining in the generally flat-lying limestone formations. In some cases the dip may exceed 5° which can result in unique roof ins
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Improvements in Column Flotation Through the Use of Microcel™ Spargers at Antamina
By David Estrella, Hector M. Lizama, Jhonny Carrión
"Microcel™ sparging systems were installed on one column of the molybdenum cleaner circuit and one column of the copper first cleaner circuit at Antamina. The Microcel™ system is known to generate fin
Jan 1, 2008
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Stratigraphic, Mineralogical and Physical Variations at Waikato - North Head, South Auckland: Preliminary Results
By D Pastars, J L. Mauk
Located at the southern end of the Awhitu
Jan 1, 2001
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Investigations of Massive Sulphide Mineralisation Along the Kermadec Arc 1996 - 2005
By G J. Massoth, K Faure, A G, R G. Ditchburn, I J. Graham
From modest beginnings in 1996, research into the mineral potential of New ZealandÆs Exclusive Economic Zone has progressed into a major multidisciplinary component of GNSÆs recently funded 6-year æMi
Jan 1, 2005
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Implementation of Advanced Transfer Chute Designs
By N van Aarde, B A. Moore, S van der Merwe
Frequently materials handling operations are compromised by transfer chute problems ranging from high wear rates, blockages and ineffective loading of the downstream conveyor. This paper will present
Aug 12, 2013
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Performance Monitoring Of Block Cave Mines Using Signal Processing And Waveform Analysis Of Gps Data
By D. Rutledge
Discrete (digital) signal processing techniques are proving to be very valuable tools for miners using the block cave method. Waveform analysis of different measured signals associated with active mi
Jan 1, 2008
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The 125th Meeting Of The Institute
THE 125th meeting of the Institute was held in New York, Feb. 20-23, 1922, inclusive, and was the most successful annual meeting of the Institute ever held; there was a larger registration, there were
Jan 3, 1922
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Minimising the water loss associated with mine tailings disposal
By C Vuillier, A Roshdieh
Water is the main medium for removing impurities from iron ore during wet processing to achieve a higher quality product. However, there is a substantial increase in freshwater consumption due to an i
Jul 24, 2017
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Natural Gas Technology - Threshold Pressure Phenomena in Porous Media
By M. R. Tek, L. K. Thomas, D. L. Katz
Threshold displacement pressures are needed to determine how much overpressure can be used in storing natural gas. An experimental technique for determining threshold pressures by displacing water wit
Jan 1, 1969
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Geology - Geology of the Nakina Iron Property, Ontario
By W. T. Swensen
The Anaconda Company, through its wholly owned subsidiary The Anaconda Company (Canada) I,td., has investigated, optioned and partially developed a large tonnage of iron ore amenable to magnetic conce
Jan 1, 1961
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Applicable Analytical Tools For A Seismic Design Of Underground Excavations
By Christopher M. St. John, Tony F. Zahrah
Empirical and numerical methods are the two extremes of the tools available for the seismic design of subsurface excavations and underground structures. Both have their limitations: when relying on pu
Jan 1, 1985
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Advanced Media-Free Fine and Ultra-Fine Grinding - The Kelsey Axial Displacement Mill
By J Kelly, C Kelsey
The Autogenous Kelsey Axial Displacement (KAD) mill is essentially a short retention time centrifugal mill, designed to effectively harness extraordinarily high concentrations of input energy for effi
Jul 15, 2013
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Constraints on the Dynamics of Rifting and Denudation on the Eastern Margin of Australia: Fission Track Evidence for Two Discrete Causes of Rock Cooling
By A Raza, D P. Kohn, D A. Foster, A J. W Gleadow
A large and increasing data base of apatite fission track results from sedimentary and granitic rocks exposed within the south-eastern highlands and along the continental margin ofAustralia provides c
Jan 1, 1995
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Erection and Commissioning Issues for Large Grinding Mill Circuits
By Randolph R. Dreher, Michael L. Schreder
"In recent years, FFE Minerals has designed, installed and commissioned several large grinding mill circuits. This paper discusses the issues related to the erection and commissioning of large grindin
Jan 1, 2001
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Hydrogen Peroxide Precipitation of Uranium at Madawaska Mines Limited
By L. McFarlane, D. Rollwagen
"Madawaska Mines produces a uranium precipitate (83-85% u3o8) using a magnesium oxide slurry to precipitate the uranium from solution. The solution, at approximately 9""0 g/l u3o8 is neutralized to a
Jan 1, 1982