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An Algorithm To Construct Industry Cost Curves Used In Analysing Cash Cost Performance Of Operations For Selected Minerals In South Africa
By T. Tholana
South Africa hosts some of the world?s largest known resources and reserves of minerals that are strategically important to the global economy. The country?s mining industry contributes significantly
Jun 1, 2013
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Melting Phenomena In Ferromanganese Production
By Dechun Lou, Benjamin Ravary, Merete Tangstad, Stein Wasbø, Sean Gaal
The melting phenomena of manganese ore, slag and alloys were studied in an experimental sessile drop furnace. Particles of approximately 20-60mg were placed on graphite substrates and then heated at a
Jan 1, 2007
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VAT and professional services
By Ian MacKenzie
Over the past twelve years, professionals such as architects, engineers, accountants, and attorneys have not had to pay a great deal of attention to GST. The fees charged to clients (outputs) have no
Jan 1, 1990
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Rock Drillability Prediction From In Situ Determined Unconfined Compressive Strength Of Rock - Synopsis
By V. C. Kelessidis
The interaction between rock and drill bit during drilling has been modeled for many years, but a complete understanding of the phenomena occurring has yet to materialize. Successful models will allow
Jan 1, 2011
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Rock Support In Southern African Hard Rock Mines.
By Dennis Van Heerden
Southern Africa has a long history of underground hard rock mining dating back to the late 1800?s. The rock support of underground excavations has significantly changed during this period, due to impr
Jan 1, 2007
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Review Of Membrane Support Mechanisms, Loading Mechanisms, Desired Membrane Performance, And Appropriate Test Methods
Excavations in rock are commonly supported with wire mesh, shotcrete, wire mesh and shotcrete in combination, and shotcrete reinforced with various types of fibres. Wire rope lacing and various types
Jan 1, 2001
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Airflow Fields Simulation On Passive Pulsing Air Classifiers
By Y. He
Early research showed that the separation of particles based upon their density was not possible in steadily rising air streams. The terminal velocities of moving spheres are determined by their aerod
Jan 1, 2005
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Student prizegiving
The first annual student prizegiving function of the South African Institute of Mining and Metallurgy was held in the Dorothy Susskind Auditorium, University of the Witwatersrand, on Thursday, 26th Ma
Jan 1, 1977
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Book Review - International Symposium-Cum-Workshop On Management And Control Of High Gas Emissions And Outbursts In Underground Coal Mines - Wollongong, NSW, Australia - 20th - 24th March, 1995
The Proceedings of the above Symposium have been edited and published by the Symposium Committee. The Symposium was sponsored by the Australian Coal Association, the Joint Coal Board, and the United N
Jan 1, 1996
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Stability evaluation of room-and-pillar rock salt mines by using a flat jack technique – A case study
By M. Z. Emad, N. Abbas, Y. Majeed
Room-and-pillar mining is commonly employed for the extraction of rock salt in undergroundmines. Pillar stress is a major concern in these mines as it is directly related to stability and mineralrecov
Jun 5, 2023
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A Thermodynamic Approach To Physical Properties Of Silicate Melts
By S. Sridhar, R. E. Aune, M. Hayashi
Thermophysical properties of silicate melts are strongly structure dependent. It is well known that the viscosities of slags increase with increasing the degree of polymerization of silicate anions. E
Jan 1, 2004
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Evaluation of solar thermal pretreatment of carbonate-rich manganese ores in highcarbon ferromanganese production through dynamic process modelling
By F. Dinter, C. McGregor, Q. G. Reynolds, L. Hockaday
The necessity of reducing greenhouse gas emissions to limit the impact of anthropogenic climate change means that all industrial processes should investigate their options towards decarbonization. Iro
Dec 11, 2024
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Book Reviews ? Extractive Metallurgy Of Copper
By A. K. Biswas
Reviewer: R. H. Eric This edition is organized in twenty-three chapters, and contains exactly 500 pages including three appendices and an index. The first and second editions were published in 197
Jan 1, 1995
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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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Effect of MgO and A12O3variations in oxygen steelmaking (BOF) slag on slag morphology and phosphorus distribution
By R. Boom, J. Halder, B. Snoeijer, B. Deo, A. Overbosch
Operational data of BOF and the slag samples for different starting conditions of phosphorus(0.06–0.26 per cent P) and silicon content (0.3–1.2 per cent Si) of hot metal have been analysed. The contri
Jan 1, 2004
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Steel Cleanliness And Hydrogen In Liquid Steel
By R. Dekkers, J. Plessers
The feasibility of using hydrogen to obtain clean steels is investigated. High hydrogen contents are generally considered as detrimental due to the risk of flakes, bubbles and breakouts during casting
Jan 1, 2004
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Optimization of the Cycle Time to Increase Productivity at Ruashi Mining
By H. Thomas, I. N. M. Nday
"*Paper written on project work carried out in partial fulfilment of BSc.Eng (Mining Engineering) degreeThe optimization of the cycle time to increase productivity at Ruashi Mining was an on-site proj
Jul 1, 2019
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Geotechnical Considerations In The Design Of The MOCB Mining Method At Konkola No.3 Shaft.
By M Lipalile, A B. Tunono, A W. Naismith
Konkola No 3 shaft experienced severe mining induced stress and time related deterioration in ground conditions in an area where an over-cut and bench (OCB) mining method was used to extract a shallow
Jan 1, 2005
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Special General Meeting
A Special General Meeting of the Institute was held in Kelvin House, Johannesburg on Wednesday, 29th September, 1971. The President, Prof. D. D. Howat opened the meeting at 9.55 a.m. The Preside
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Measuring The Impact Of HIV And STIs In A Community In A Coal Mining Town, Mpumalanga, South Africa
By H. Hurkchand
Background: A cross-sectional study was conducted in November2001 to establish the prevalence rates of Human Immunodeficiency Virus (HIV) and sexually transmitted infections (STIs) (Chlamydia trachoma
Jan 1, 2005