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Geothermal Systems in New Zealand and the Philippines - Why are they so different? (f9f07ead-ff1f-4853-9019-27f3e7931bb6)
The Taupo Volcanic Zone in New Zealand and the Philippine Mobile Belt in the Philippines are characterized by active subduction, active volcanism and high seismicity. The main factors affecting chara
Jan 1, 1995
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A Robust Methodological Approach for Mine Site Water Accounting
By N Collins, A Woodley, A N. Danoucaras, C McCombe, N C. Kunz
Over the past decade, the mining industry has come to recognise the importance of water both to itself and to others. Water accounting is a formalisation of this importance that quantifies and communi
Nov 26, 2013
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Geostatistical, Spectral and Fractal Simulation of Sulphur Distribution in a Coal Seam
By Ramani R. V
In this paper, a comparative performance evaluation of geostatistical, spectral, and fractal methods is made for short-scale variability prediction. The algorithms compared are: sequential Gaussian
Jan 1, 1995
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A New Toolkit for Iron Ore Characterisation
By E R. Ramanaidou, M A. Wells
Asian steel mills are demanding iron ore with specific chemical, mineralogical, metallurgical and environmental properties to warrant that the ore is of the greatest quality. As a result, a toolkit of
Jul 13, 2015
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A Novel Approach to Estimate the Gap Between theáMiddle- and Short-Term Plans
By J Ortiz
In almost all copper mining companies, mine planning is done considering different time frames, leading to long-term (life-of-mine) (LOM), medium-term (first three years) and short-term (first year, m
Sep 26, 2011
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Apatite from Alkaline Complexes û Geological Aspects, Behaviour in Mineral Processing and Characterisation Techniques
By M M. M LT Tassinari, A B. Braz, L M. SantÆAgostino, C Ulsen
Several mineral resources have been recognised to alkaline igneous rocks. In general, these mineralisations present low P grades, so a complex concentration process is required to achieve commercial g
Jan 1, 2008
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Block Model Data Reduction and Sensitivity Analysis
By J E. Everett
Maximising ore tonnage at a selected target grade requires that appropriate ore identification criteria be established. Iron ore mining block models may consist of many millions of estimated blocks, e
Jul 13, 2015
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A User-Oriented, Mini Computer Based System for Open Cut Coal Mine Planning
By Van Hoorn PD
For the development of BHP's Gregory open cut coal mine in Central Queensland a mini computer was successfully used to assist staff in the evaluation of the deposit and the planning of the mi
Jan 1, 1978
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The importance of the curing stage in the fixation of arsenic in pressure oxidation
By M Chen, W S. Ng, Y Liu
In the processing of refractory gold-bearing sulfides, pressure oxidation (POX) is commonly known for its role in liberating the gold in solid-solution via oxidation of the sulfide occlusions. For dep
Aug 24, 2022
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Uncertainty and Risk in Mineral Valuation - A User's Perspective
The words ""Uncertainty"" and ""Risk"" pervade every discussion about mining exploration and investment. Perhaps these terms are subjectively understood by industry professionals, but objective por
Jan 1, 1994
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Studies in Size Separation by Screening
Laboratory studies of batch and continuous screening of ferrous sinter mixtures (4-0.5 mm) are described. The results are analysed by an equation derived from the first-order rate law for the conditio
Jan 1, 1985
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Mitigating the Effect of Surface Coatings on Gold Processing
By R Wei, Y Peng
With the depletion of high-quality ores, the efficiency of extracting difficult gold ores through flotation and leaching becomes very important in the mining industry. Iron contaminants, sulfide and c
Sep 1, 2014
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The Electrostatic Precipitation of Suspended Particles from Gases
By Marshall K. I
THE problem of satisfactorily eliminating the fumes and dust which are unavoidably produced in various metallurgical and manufacturing industries is one which has received considerable attention in th
Jan 1, 1923
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Mathematical and Physical Simulation of Non-Uniform Liquid Drainage in Packed Beds
By Pinczewski WV, Nowak LP, Tanzil WBU, Jenkins DR, McCarthy MJ
An experimental and theoretical study has been made of the drainage behaviour of two-dimensional packed beds drained from an outlet in the sidewall of the bed in order to identify the fundamental m
Jan 1, 1981
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The Effect of Thallium on the Rate of Extraction of Gold from Pyrites Calcine
The addition of a thallous salt to the cyanide leach of a calcined pyritic concentrate causes a marked increase in the"rate of extraction of gold. This probably is due to the activation of passive
Jan 1, 1964
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Recent Operation at Harima Works
By Kadoya H, Kondo Y
The Harima works were established in 1964 and started operation in 1966. The initial capacity was 3500 t/month of zinc and 1500 t/month of lead. Until 1990 a lot of improvements had been made and th
Jan 1, 1993
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Diesel Particulate Matter Control Technologies and Measurements in US Mines
By A D. Bugarski, G H. Schnakenberg Jr
An investigation was carried out at a US underground mine to characterise diesel aerosols and to asses the effects of various control technologies on the concentrations and properties of particulate m
Jan 1, 2005
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Multisource rock characterisation at microscale for a better understanding of processing characteristics
By B Bonfils, P Lois Morales, C Evans
One of the main challenges for current and future mining and processing methodologies is to understand the characteristics of the rock so that its behaviour in one or more parts of the mining process
Nov 21, 2018
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Hydrothermal Eruptions in Ore Forming Reservoirs: Analogues and Models (8303724b-03b1-4376-8afa-976287ceae87)
By Hayba DO
Metal-rich slurries discharged from excess-enthalpy geothermal wells at Kawerau (NZ) indicate that an efficient ore precipitation mechanism operates in some feedzones. In our conceptual model, which
Jan 1, 1995
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Towards a Medium Behaviour Based Performance Modelfor Coal-Wahshing Dense Medium Cyclones
By Lyman GJ, Davis JJ
Models which have been presented in the literature consider only selected aspects of dense medium cyclone operation, are empirical in nature and generally relate only to severely limited ranges of
Jan 1, 1987