A conceptual study is regarded as the first phase in the development of a new open pit mine. The phased approach (conceptual, prefeasibility, feasibility) is described as a “stepwise risk reduction” process, whereby each ...
Alejano, L.R.; Arzua, J.; Castro-Filgueira, U.; Malan, D.F. (Francois)(Southern African Institute of Mining and Metallurgy, 2017-06)
Pillar design for underground mining is typically done using empirical
formulae or numerical modelling. Practical experience and recent
literature, nevertheless, illustrate the shortcomings of these design
Gomes-Sebastiao, G.L.; De Graaf, W.W.(Southern African Institute of Mining and Metallurgy, 2017-04)
Gomes Sand is a quarry operation that produces sand and aggregate for
the construction industry. The quarry is experiencing inconsistencies in
the fragmentation and poor pit conditions as a result of poor drilling ...
Preis, Eugene Pieter(University of Pretoria, 2017)
In recent years, innovation in the mining industry has shifted from being a non-essential business activity to a necessity. Key challenges in the last decade (such as declining ore grades and increased mining costs) have ...
The global mining industry is currently under pressure. The industry is in the midst of the largest mining super cycle since the Second World War. Mining companies face increasing challenges to profitability due to ...
A method for the geochemical modelling of transient contaminant release from rehabilitated opencast coal mines, including calibration against existing data, is proposed. The need for such a methodology is illustrated by a ...
Webber-Youngman, R.C.W.; Van Heerden, G.(Southern African Institute of Mining and Metallurgy, 2016-05)
This article describes the re-engineering principles applied in the design of a personnel transportation system for the Bafokeng Rasimone Platinum Mine in the Rustenburg area of South Africa. It incorporates conveyor belt ...
Belle, Bharath K.; Du Plessis, J.J.L.(Mine Ventilation Society of South Africa, 2002-10)
Despite the much-heralded arrival of the new millennium,
improving mine health and safety remains an enormous challenge.
Considerable progress with environmental (dust and
methane) control in South African mines has ...
Belle, B.K.; Du Plessis, J.J.L.; Oberholzer, J.W.(Mine Ventilation Society of South Africa, 2000-01)
After initial studies by the CSIR indicating that a discrepancy
exists in the dust concentration results between gravimetric dust
samplers, alternative instruments or methods were sought. In
the study that followed; it ...
Belle, B.K.; Du Plessis, J.J.L.; Van Zyl, F.J.(Mine Ventilation Society of South Africa, 2000-04)
The changing and stricter regulatory environment has
caused the mining industries in South Africa to re-look at their
individual mine health and safety departments. In 1997, after
the report of the Leon Commission of ...
Belle, Bharath K.; Du Plessis, J.J.L.(Mine Ventilation Society of South Africa, 1999-01)
The project was planned in two phases. The
first phase involved laboratory tests on a continuous
miner model for different ventilation and
spray systems at the newly built ventilation simulation
tunnel at the Klopperbos ...
Biffi, Marco; Marx, Wynand; Du Plessis, J.J.L.(Mine Ventilation Society of South Africa, 2006-10)
The FutureMine Collaborative Research Initiative has
been successfully completed after three years of activity.
The main objective of this initiative was to provide
applications of research previously undertaken in ...
Du Plessis, J.J.L.; Potgieter, S.A.J.(Mine Ventilation Society of South Africa, 2016-07)
Spotters and samplers working around surface drill rigs can be
exposed to high dust concentrations. In this study it was found
that individuals were exposed to as much as 14.2 mg/m3, which
exceeds the Occupational ...
Du Plessis, J.J.L.; Janse van Rensburg, L.; Jansen van Rensburg, L.P.(Mine Ventilation Society of South Africa, 2016-04)
Dust emissions from mining activities and their impact on the
surrounding environment have been and remain one of the major
environmental impacts associated with surface mining. Dust
emissions caused by the transportation ...
Du Plessis, J.J.L.; Scott, D.; Moorcroft, H.E.S.(Mine Ventilation Society of South Africa, 2006-07)
The increasing mining depths of South African gold
mine deposits are resulting in ever-increasing heat
loads associated with depth and the geothermal gradient.
Together with changes in the mining horizons
brought about ...
Du Plessis, J.J.L.; Van Dijk, R.L.S.(Southern African Institute of Mining and Metallurgy, 2001-10)
The French research institute, INERIS, requested the assistance of
the CSIR’s Division of Mining Technology in developing further
precautionary measures against explosions in their collieries. In
response to this approach, ...
Du Plessis, J.J.L.(Southern African Institute of Mining and Metallurgy, 2015-12)
Preventing the propagation of methane or coal dust explosions through the use of active explosion-suppression
systems remains one of the most underutilised explosion controls in underground coal mines. As part of the ...
Crush pillars are used as part of the stope support in intermediate depth tabular mining stopes. Crush pillar design should ensure that the pillars crush when formed at the mining face. This behaviour of the pillars is ...