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Browsing by Subject "Mines"

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Application of a routine moment tensor inversion capability in the development of a new design consideration for the stability of foundations of stabilising pillars in deep level gold mines and pillars in intermediate depth hard rock mines

Author: Linzer, LM ; Watson, BP ; Kuijpers, JS ; Acheampong, E Date: Mar 2002 Results of SIMRAC project GAP 223 showed that stabilizing pillar-related back area seismicity was not related to the width of the pillar, nor to the dip spans of the stopes supported by the pillar. Pillar associated seismicity initiated in ... Read more
Application of indirect stress measurement techniques (non strain gauge based technology) to quantify stress environments in mines

Author: Stacey, TR ; Wesseloo, J Date: Mar 2002 Reliable values of in situ stress are essential for the valid modelling of mine layouts. Available non-strain gauge methods are reviewed as potential practical techniques for South African mines. From this review it is concluded that the most ... Read more
Borehole radar as a tool to optimise mine layouts and production

Author: Mafiri, MT ; Nyareli, T ; Ngwenya, B ; Vogt, D Date: Nov 2008 The major gold and platinum deposits of South Africa occur in the Witwatersrand Basin (gold) and Bushveld Complex (platinum) (Henning et al., 1994; Carr et al., 1994; Cawthorn, 1999). While the origins and geology of the two structures have ... Read more
Comparison between time-and frequency-domain induced polarisation parameters

Author: Van Schoor, Michael ; Mare, LP ; Fourie, CJS Date: Sep 2009 Physical properties of rock samples from exploration or mining sites are often needed to assist in the planning of geophysical surveys or in the interpretation of geophysical results. For example, the output from a physical property study may ... Read more
Debba China presentation on optimal field sampling for exploration targets and geochemicals

Author: Debba, Pravesh Date: Oct 2008 A presentation was done at the Chinese Academy of Geological Science in October 2008 on optimal field sampling for both exploration targets and sampling for geochemicals in mine tailing areas Read more
Deterministic properties of mine tremor aftershocks

Author: Kgarume, Thabang E ; Spottiswoode, SM ; Durrheim, RJ Date: Oct 2010 Mine tremor aftershock sequences from two deep mines in the Far West Rand goldfield, South Africa, were analysed in order to determine the influence of geological and mining parameters on the risk posed by aftershocks. Mainshocks were stacked ... Read more
Effective roof support for tabular stopes.

Author: Ottermann, RW ; Burger, NDL ; Von Wielligh, AJ ; Handley, MF ; Fourie, GA Date: Sep 2002 This project follows on from project GAP 708, The Design and Development of an Effective Support System for Tabular Stopes in Gold and Platinum Mines. The primary output of this project is to develop and surface test an effective roof support ... Read more
Ergonomics

Author: Schutte, PC ; James, JP Date: 2007 Ergonomic surveys are conducted to identify ergonomics-related risk factors in a workplace. The surveys include elementary hazard identification, risk assessment and identification of areas where specialist ergonomics advice is required. This ... Read more
Ergonomics of locomotive design in South African Gold and Platinum mines.

Author: Smith, JR ; Shaba, MN ; Marais, P ; Schutte, PC ; Mac Duff, L ; Malapane, MC ; Harper, GS ; Romoshebi, J Date: Mar 2002 This research report discusses the ergonomics of locomotive designs in South African gold and platinum mines. The purpose of the study was to identify safety aspects of the existing fleet of mine locomotives and rolling stock that could be ... Read more
Factors influencing the detection of unsafe hangingwall conditions.

Author: Peake, AV ; Ashworth, SGE Date: Oct 1996 This project reports on the findings of an investigation into reasons why hanging wall examination procedures fail to prevent fall of ground accidents on gold and platinum mines. Ideally, these procedures should identify every unsafe hanging ... Read more
GPS-deprived localisation for underground mines

Author: Hlophe, K Date: 31 Aug 2010 South Africa plays a major role in the international mining fraternity. Location information will enhance the safety in mines by permitting the realisation of wireless sensor networks (WSN), which are persistent and ubiquitous environmental ... Read more
Merensky pillar strength formulae based on back-analysis of pillar failures at Impala Platinum

Author: Watson, BP ; Ryder, JA ; Kataka, MO ; Kuijpers, JS ; Leteane, FP Date: Aug 2008 The Bushveld platinum group metal deposits are two distinct, shallow-dipping stratiform tabular orebodies and strike for many hundreds of kilometres. Mining is extensive, with depths ranging from close-to-surface to 2 000 m. The mining method ... Read more
New technology for real-time in-stope safety management

Author: Vogt, D ; Brink, VZ ; Schutte, S Date: Sep 2009 South African underground hard rock mines are typically managed using measurements made daily, weekly or even monthly of key parameters like face advance, readiness to blast, blast success, temperature or dust levels. Safety and health can ... Read more
Novel method of evaluating miners at risk for noise-induced hearing loss

Author: Edwards, AL Date: 31 Aug 2010 Noise-induced hearing loss (NIHL) negatively affects the quality of life of mine employees and costs mining companies large amounts in compensation claims. The prevention of NIHL requires early identification and recent evidence about the ... Read more
Numerical modelling of mine workings.

Author: Lightfoot, N ; Maccelari, M Date: Mar 1999 This report covers the production of a general reference handbook of numerical modelling for the South African mining industry, with particular reference to the gold and platinum industries. It also covers a research sub-project investigating ... Read more
Observational studies to mitigate seismic risks in mines: a new Japanese-South African collaborative research project

Author: Durrheim, RJ ; Ogasawara, H ; Nakatani, M ; Yabe, Y ; Milev, AM ; Cichowicz, A ; Kawakata, H ; Moriya, H Date: Oct 2010 Mining-induced earthquakes pose a risk to workers in deep South African mines, while natural earthquakes pose a risk to people living close to plate boundaries. The authors introduce a 5-year Japanese - South African collaborative project ... Read more
Observational study to mitigate seismic risks in mines: a new Japanese-South African collaborative project

Author: Durrheim, RJ ; Ogasawara, H ; Nakatani, M ; Yabe, Y ; Milev, A ; Cichowicz, A ; Kawakata, H ; Moriya, H ; JST-JICA SA Research Group Date: Sep 2009 Mining-induced earthquakes pose a hazard to workers in deep South African mines, while natural earthquakes pose a hazard to people living close to plate boundaries. Researchers introduce a 5-year Japanese-South African collaborative project ... Read more
Particle capturing performance of South African non corrosive samplers

Author: Pretorius, C Date: May 2010 In view of the international drive to eliminate silicosis, it is critical that reliable and consistent results are obtained from respirable dust sampling and analysis so that effective control measures can be implemented on mines. Two locally ... Read more
Position paper: cognitive radio networking for multiple sensor network interoperability in mines

Author: Kagize, BM ; Brink, S Date: 2008 This paper proposes the use of cognitive radio technology for multiple wireless sensor technologies in mines. The work is motivated by the lack of flexible and scalable sensor networks in mines. The proposed architecture uses cognitive radio ... Read more
Prospective and retrospective spatial sampling scheme to characterize geochemicals in a mine tailings area

Author: Debba, Pravesh Date: Jul 2009 This study demonstrates that designing sampling schemes using simulated annealing results in much better selection of samples from an existing scheme in terms of prediction accuracy. The presentation to the SASA Eastern Cape Chapter as an ... Read more

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