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Measurement of in situ stresses in deep drillholes for a hydroelectric project
By N. Kumar, A. K. Dhawan, A. Varughese, S. K. Khullar
Abstract The in-situ stress field is one of the primary parameters influencing the performance of underground structures particularly in the Himalayas where there is strong influence of topography
Jan 1, 2003
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The interaction of rock mass properties and the project specific boundary conditions as basis for the design of deep excavation pits
By R. Katzenbach, M. Vogler, U. Adamietz
Abstract The design of deep excavation pits in rock mass is dependent as well on the mechanical properties of the rock mass as for example the orientation and the type of discontinuities like bed
Jan 1, 2003
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CFD modelling of methane movement in mines
By D. Whittles, C. J. Lea, T. X. Ren, A. Kelsey
A methodology for the simulation of methane drainage combining geotechnical modelling and computational fluid dynamics (CFD) will be described. Geotechnical modelling was used to predict the developm
Jan 1, 2003
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Alternative Dissolution Of Zircon Samples And Simultaneous Analysis Of Major And Trace Components ? Synopsis
By S. J. Lötter
Analysis of the major and minor components of raw zircon as well as plasma-dissociated zircon was undertaken using inductively coupled plasma optical emission spectroscopy (ICP-OES). Microwave-assiste
Jan 1, 2012
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Safety Considerations In Underground Logistics?A Look At Vertical, Horizontal And In-Stope Transportation Systems ? Synopsis
By S. M. Rupprecht
Transportation accounts for some 26% of all mine accidents in South Africa. Although this figure may not be as prolific as fall of grounds accidents or accidents caused by seismic events, the enormity
Jan 1, 2011
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Annual Report ? For The Year Ended 30th June, 1992
[COUNCIL FOR 1991/92 President R.D. Beck President Elect JP. Hoffman Vice Presidents Senior Junior Dr H. Scott-Russell J.A. Cruis
Jan 1, 1992
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Leachability Of Nitrided Ilmenite In Hydrochloric Acid - Synopsis
By J. J. Swanepoel
Titanium nitride in upgraded nitrided ilmenite (bulk of iron removed) can selectively be chlorinated to produce titanium tetrachloride. Except for iron, most other components present during this low t
Jan 1, 2011
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The Process Design Of Gold Leaching And Carbon-In-Pulp Circuits - Introduction
Assuming that a gold ore has been effectively ground to ensure maximum economic liberation of gold, the circuits that will have the most effect on the successful operation of a gold plant will be that
Jan 1, 1999
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Use Of Sintered Pellets In Production Of High Carbon Ferro Chrome
By C. N. Harman, N. S. S. Rama Rao
Production of Ferro-alloys through submerged electric arc furnace involves use of electric power as one of the major inputs. Hence the production by this power intensive process can be made economical
Jan 1, 2007
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An analysis of the practical and economic implications of systematic underground drilling in deep South African gold mines
By D. G. Krige
Using chip sample data and spatial structure parameters from a large mined-out section of a South African gold mine the advantages to be gained from a regular underground borehole drilling programme h
Jan 1, 2003
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Assessment Of The Precision And Bias Of An Online Gauge Using A Single Reference Instrument ? Synopsis
By F. Lombard
We consider the Grubbs estimation of the precision of an online gauge. Typically, this type of estimation involves independent results from two or more reference instruments (sampling and laboratory a
Jan 1, 2012
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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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The History And Development Of The Pyrometallurgical Processes At Evraz Highveld Steel & Vanadium ? Synopsis
By W. S. Steinberg
In 1963, the full-scale engineering study for the development of an iron, steel, and vanadium plant was initiated. This was the birth of Evraz Highveld and its process flow as it is known today. Highv
Jan 1, 2011
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The Influence Of Sr2+ On The Formation Of Calcareous Deposits On Freely Corroding Low Carbon Steel In Seawater
The corrosion behaviour of a low carbon steel was investigated in synthetic seawaters with and without Sr2+. It was found that strontium substitutes for calcium in aragonite, rather than precipitating
Jan 1, 2007
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Variations In Ultra-Deep, Narrow Reef Stoping Configurations And The Effects On Cooling And Ventilation - Introduction
In exploiting the ultra-deep, narrow reef ore bodies of the Witwatersrand, the ventilation and cooling systems within the stopes play a critical role because of high concentrations of active workers.
Jan 1, 2001
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Fatigue Knowledge?A New Lever In Safety Management - Synopsis
By W. J. Theron
The purpose of the paper is to give an introduction to the concept of fatigue and its causes in the mining industry. By knowing the fundamental role it plays, together with its dynamics, can positivel
Jan 1, 2011
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Kinetic gold leach monitoring including cyanide speciation - Synopsis
By P. W. Lotz
Traditionally, bottle roll tests have been used to optimize the extraction process for best gold extraction and recovery. Such tests typically involve exposing the ore to defined reagent concentration
Jan 1, 2009
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The Use Of Cusums As A Tool To Aid In The Interpretation Of Slope Monitoring Data With Specific Examples From An Operating Open Pit Mine
By P. A. Lilly, W. Sarunic
In most cases, slope movement monitoring data are collected on a temporal basis and displacement or velocity is plotted against time in order to assist the engineer to make judgements about slope beha
Jan 1, 2006
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Economic Evaluation Of Optimum Bench Height In Quarries
By H. Kose
In this research, a model quarry with an annual production capacity of 1 000 000 tonnes has been studied for both pit and hillside quarry cases with constant overall slope angle and variable bench slo
Jan 1, 2005
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Slag Properties And Design Issues Pertinent To Matte Smelting Electric Furnaces (e3a20593-dc35-4fd2-9a1d-dff5bd2ffd2f)
The effect of composition on electrical conductivity (resistivity), viscosity and liquidus temperature of the slags encountered in electric smelting of PGM-containing suphide concentrates is reviewed
Jan 1, 2004