• A limit equilibrium model of tabular mine pillar failure 

  Napier, J.A.L. (John); Malan, D.F. (Daniel Francois) (Springer, 2021-01)

  An improved understanding of pillar strength and pillar failure mechanisms is required to optimize tabular mine layout designs. The paper describes the application of a limit equilibrium model for pillar failure analysis. ...
• The development of a mining method selection model through a detailed assessment of multi-criteria decision methods 

  Baloyi, Vukosi Danisa; Meyer, L.D. (Elsevier, 2020-12)

  In the past decades, attempts were made to build a systematic approach to mining method selection (MMS) Ooriad et al. This is because MMS is a complex and irreversible process. Since it can affect the economic potential ...
• Investigating the use of polymer-modified cementitious thin spray-on liners as stope face support 

  Du Plessis, M.; Malan, D.F. (Daniel Francois) (Elsevier, 2021-06)

  This paper investigates the use of a thin spray-on liner (TSL) as stope face support in narrow width tabular stopes. The application of areal support is difficult in these stopes because of the small stoping width and the ...
• A critical analysis of recent research into the prediction of flyrock and related issues resulting from surface blasting activities 

  Van der Walt, Jennifer; Spiteri, William (Southern African Institute of Mining and Metallurgy, 2020-12)

  Since 2010, a number of researchers have investigated the development of new models to generate accurate predictions relating to the risks from flyrock. The purpose of this paper is to summarize and analyse these recent ...
• Identification of suitable areas for multireef operation at Thorncliffe Chrome Mine 

  Mthembu, L.L.; Meyer, L.D. (Southern African Institute of Mining and Metallurgy, 2020-06)

  Thorncliffe Chrome Mine, one of Glencore’s Eastern Chrome operations, is currently mining the Middle Group No.1 (MG1) chromitite layer and is conducting a pre-feasibility study for an expansion project to mine the Middle ...
• Numerical study of stability and connectivity of vertical goaf drainage holes 

  Khanal, Manoj; Poulsen, Brett; Adhikary, Deepak; Balusu, Rao; Wilkins, Andy; Belle, Bharath (Springer, 2021-03)

  During underground longwall coal extraction, overburden strata deformation may result in vertical goaf drainage holes, which are drilled in advance of mining for tail gate gas management, to fail. The performance of these ...
• The application of probabilistic logic to identify, quantify and mitigate the uncertainty inherent to a large surface mining budget 

  Hager, Johann (University of Pretoria, 2014-01)

  Mining is a hugely expensive process and unlike manufacturing is based on an ever diminishing resource. It requires a continuous infusion of capital to sustain production. A myriad of factors, from the volatility of the ...
• Surface fan operational cost saving using purposely designed fans 

  Viljoen, A.; Du Plessis, J.J.L. (Mine Ventilation Society of South Africa, 2019-01)

  The use of high powered catalogued auxiliary fans to meet the ventilation requirements of fairly shallow mines is common practice and often is not an energy efficient ventilation solution. This paper describes the ...
• Developing a mining plan for restarting the operation at Uis mine 

  Maritz, J.H. (Henko); Uludag, S. (Southern African Institute of Mining and Metallurgy, 2019-07)

  AfriTin Mining Limited plans to reopen the Uis tin mine in Namibia and establish a pilot processing plant for phase 1 of the Uis tin project, which is scheduled to commence in the last quarter of 2018 . A mining plan is ...
• The need for improved layout design criteria for deep tabular stopes 

  Jooste, Y.; Malan, D.F. (Daniel Francois) (Southern African Institute of Mining and Metallurgy, 2020-01)

  This paper was compiled to highlight the need for additional research in the area of layout design criteria for deep gold mines. It describes aspects related to two popular design criteria used in the deep gold mines of ...
• Preliminary investigation on using IS approved real time dry bulb and relative humidity sensors in underground coalmines 

  Khanal, M.; McPhee, R.; Belle, Bharath; Brisbane, P.; Kathage, B. (Springer, 2019-01)

  A review of various real time temperature monitoring devices available for use in underground coal mines in Queensland was conducted. To investigate the fit-for-purpose of the intrinsically safe (IS) instrument, laboratory ...
• Developing a concept that can be used to quantify the motion of flyrock, with the intention of eventually producing a measuring tool for future flyrock research. 

  Van der Walt, Jennifer (University of Pretoria, 2019)

  Flyrock remains a significant risk to the health and safety of the mine’s employees and infrastructure as well as the safety of the neighbouring communities and their property. Losses and damages can result in significant ...
• Structural mechanisms contributing to large-scale hangingwall instabilities on the UG2 reef horizon 

  Hartzenberg, Alida Gertruida (University of Pretoria, 2019)

  Structural complexities, including regional geologic structures, low-angle structures, ramp structures and alteration zones contribute towards large-scale hangingwall or structural (pillar) instabilities experienced in ...
• Mining with crush pillars 

  Du Plessis, Michael; Malan, D.F. (Daniel Francois) (Southern African Institute of Mining and Metallurgy, 2018-03)

  Crush pillars have been extensively applied on the Merensky Reef horizon since the late 1970s. Once in a crushed state, the residual strength of the pillar provides a local support function and must support the hangingwall to ...
• Some rock engineering aspects of multi-reef pillar extraction on the Ventersdorp Contact Reef 

  Esterhuyse, J.C.; Malan, D.F. (Daniel Francois) (Southern African Institute of Mining and Metallurgy, 2018-12)

  Mining in the Carletonville area of the Witwatersrand Basin predates 1934. Owing to the depletion of higher grade ore, the current activities focus increasingly on the extraction of lower grade secondary reefs as well as ...
• Structural mechanisms contributing to large-scale hangingwall instabilities on the UG2 reef horizon 

  Hartzenberg, Alida Gertruida (University of Pretoria, 2019)

  Structural complexities, including regional geologic structures, low-angle structures, ramp structures and alteration zones contribute towards large-scale hangingwall or structural (pillar) instabilities experienced in ...
• A critical investigation into missing persons in underground mines and related tracking technology 

  Ngwenyama, Philani Larrance (University of Pretoria, 2018)

  Even though mining has always been at the heart of the economy, it is also regarded as one of the most hazardous industries. Miners and any other persons who work underground can, not only be fatally injured during mining ...
• A preliminary evaluation of a hydraulic mechanical splitter as a means of breaking rock in a deep-level mine 

  De Graaf, Wolter Willem (University of Pretoria, 2018)

  Conventional drill-and-blast practice in deep-level hard rock mining impacts negatively on the immediate environment and alternatives are frequently sought for efficient, continuous, automated and safe rock breaking. The ...
• The development of a mining method selection model through a detailed assessment of multi-criteria decision methods 

  Baloyi, Vukosi Danisa (University of Pretoria, 2018)

  In the past decades, attempts were made to build a systematic approach to mining method selection (MMS) Ooriad et al, (2018). This is because MMS is a complex and irreversible process. Since it can affect the economic ...
• Reassessing continuous stope closure data using a limit equilibrium displacement discontinuity model 

  Malan, D.F. (Daniel Francois); Napier, J.A.L. (John) (Southern African Institute of Mining and Metallurgy, 2018-03)

  Time-dependent closure data in deep hard-rock mines appears to be a useful diagnostic measure of rock behaviour. Understanding this behaviour may lead to enhanced design criteria and modelling tools. This paper investigates ...

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