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Using Stochastic Discounted Cash Flow And Real Option Monte Carlo Simulation To Analyse The Impacts Of Contingent Taxes On Mining Projects (60baa2dd-98b0-4282-96fe-2cac78fa8756)
By M. R. Samis
The great variability of mineral and energy prices has motivated some governments to incorporate a windfall profits tax into their mineral taxation regimes. Windfall profits taxes are a means for gove
Jan 1, 2007
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Annual Report and Accounts
COUNCIL The following served on Council during the year under review: Office bearers: Messrs V. C. Robinson (President), Prof D. D. Howat and Dr J. P. Hugo (Vice-Presidents), J. K. E. Douglas (Immed
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Improving processing by adaption to conditional geostatistical simulation of block compositions
"Exploitation of an ore deposit can be optimized by adapting the beneficiation processes to the properties of individual ore blocks. This can involve switching in and out certain treatment steps, or s
Jan 1, 2015
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Geotechnical Areas Associated With The Ventersdorp Contact Reef, Witwatersrand Basin, South Africa
By M. K. Roberts
The approximately 2800 Ma old Ventersdorp Contact Reef is a unique Witwatersrand orebody, from which about 6% of the world?s gold production is derived. A major portion of this production is mined at
Jan 1, 1999
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Book news
1. Recent publication Iron and steel works of the world. Worcester Park (England), Metal Bulletin PLC, 1987. 9th edition, 728 pp. £94.75 by air mail.2. Canadian publications Mining and mineral proces
Jan 1, 1988
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Exploration Strategy And Application At Ashanti?s Obuasi Operations
By J. A. Cox
The Ashanti mine is located within the Lower Proterozoic Birimian of Ghana, and covers a concession of 474 square kilometres at its Obuasi operations which comprise large scale underground, surface an
Jan 1, 1999
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Selection Of The Optimum In-Pit Crusher Location For An Aggregate Producer
By G. Konak
In-pit crusher location selection has had an important role recently, since increasing diesel prices. One way of reducing the haulage costs is to shorten the truck haulage distance by bringing the tru
Jan 1, 2007
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Silicomanganese Production - Process Understanding
By S. E. Olsen, M. Tangstad
The main source of Mn in raw materials for SiMn production is Mn-ore and Mn-rich slag from the high carbon FeMn production. The amount of slag per tonne of SiMn metal is mainly determined by the ore/s
Jan 1, 2004
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Computer Simulation Of The Equilibrium Relations Associated With The Production Of Manganese Ferroalloys
By S. E. Olsen, K. Tang
The complex heterogeneous equilibria associated with the production of manganese ferroalloys have been simulated by employing recently developed thermochemical databases. The non-ideal Mn-Fe-Si-C all
Jan 1, 2004
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Increasing efficiency of conveyor belt transporting system 4 Belt Lonmin - Synopsis
By G. G. le Roux
The purpose of the investigation was to assess various options for increasing the efficiency of the conveyor belt transporting system used at 4 Belt Shaft at Lonmin?s Marikana operations. The reason f
Jan 1, 2008
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Proceedings of the November, 1968, General Meeting
The November General Meeting of the Branch was held at the S1. Helena Club on Friday, 15th November, 1968. Mr. J. G. Kirchner (Chairman of the O.F.S. Branch) was in the chair. There were also pr
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The recovery of gold from plant solutions by use of a countercurrent moving carbon bed
By R. J. Davidson, W. D. Douglas, J. A. Tumilty
SYNOPSIS Two pilot plants operating on different types of carbon were used to generate steady-state adsorption data in the treatment of gold-plant solutions of high and low tenor. A pilot plant co
Jan 1, 1985
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Book news
1. New books Australian Institute of International Affairs. Uranium - energy source of the future? Canberra, thelnstitute (Box E181, P.O., Canberra, A.C.T. 2600, Australia), 1979. 202 pp. A$4,95 (post
Jan 1, 1980
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Optimization of chromium precipitation from ferrochrome leach solutions
By F. Ntuli, T. V. Nyangadzayi
Chromium green is an essential metal with various applications in the paints, construction, electronics, and aerospace industries. The main source of chromium green is the carbo-thermic reduction of c
Dec 11, 2024
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Numerical Modelling Of The Yielding Of A Stabilizing Pillar/Foundation System And A New Design Consideration For Stabilizing Pillar Foundations
Following a short review of selected literature, a back analysis of stress measurements of stress regeneration in a closed mini-longwall is shown. The agreement is good, lending confidence to the para
Jan 1, 1998
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Corrosion Mechanism And Kinetic Behaviour Of Refractory Materials In Contact With CaO-Al2O3-MgO-SiO2 Slags
By V. Brabie, S. Jansson, L. Bohlin
The rate of dissolution of solid MgO-C and doloma into liquid in CaO-Al2O3-SiO2-MgO slag at different temperatures was studied under conditions of forced convection by rotating cylindrical refractory
Jan 1, 2004
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Corrosion of Lead Anodes in Base Metals Electrowinning
By Jerry Gagnon, Matt Burr, Dave Evans, Timothy Ellis, Davies Kakengela, Abbas Mirza, Larry Webb, François Leclercq, Andrew Johnston
Lead-based alloys are the primary anodes used in electrowinning from sulphate-based aqueous systems. Lead anode technology has evolved over the years, migrating from pure lead and lead-antimonial allo
Jan 1, 2015
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Annual Report - For The Year Ended 30th June, 2003
Council for 2002/2003 President S.J. Ramokgopa President-elect T.R. Stacey Vice-presidents Senior F.M.G. Egerton Junior W.H. van Niekerk Immediate Past-president A.A.B. Dougla
Jan 1, 2003
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Heat capacity measurement of molten NaNO3-NaNO2-KNO3by drop calorimetry
By M. Kawakami, K. Suzuki, T. Takenaka, S. Yokoyama
Molten NaNO3-NaNO2-KNO3mixture is used as a heat transfer medium at high temperature. One of the most important properties of this mixture is the heat capacity. In the present work, the enthalpy chang
Jan 1, 2004
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Briquetted Chrome Ore Fines Utilisation In Ferrochrome Production At Zimbabwe Alloys
By N. N. Malila, N. R. Shoko
The ever-increasing pressure on the profit margins of ferro-chrome producers and the gradual depletion of deposits of rich hard lumpy chrome ores calls for the ferrochrome industry to maximise the use
Jan 1, 2004