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Journal of the Southern African Institute of Mining and Metallurgy

versão On-line ISSN 2411-9717
versão impressa ISSN 0038-223X

J. S. Afr. Inst. Min. Metall. vol.109 no.4 Johannesburg Abr. 2009




Optimization of the loading and hauling fleet at Mamatwan open pit mine



S.V. Mkhatshwa

School of Mining Engineering, Faculty of Engineering and the Built Environment, University of the Witwatersrand




The purpose of the study was to investigate the factors which affect the performance of the loading and hauling fleet and also find possible solutions to eliminate these factors, so that the daily tonnages required could be produced .This is due to the high demand of manganese required by clients.
The investigation strongly focuses on the performances of the three 777D Caterpillar trucks and the R984 C Liebherr Litronic Hydraulic Excavator.
In the content of the study, these machines are used to remove and move the low grade manganese (also known as the top cut overburden) in order to expose the high grade manganese from north pit to dump 4.
The objectives of the project were to determine the actual performance of the loading and hauling fleet per shift, compare the actual and the theoretical performance and identify areas that need to be improved.
To achieve the goals set for the project, a number of activities were carried out.
Perform a time study to compare the performance of the loading and hauling fleet with the manufacturer specifications
Match the equipments analysis for Loading and hauling
Road conditions analysis
Rolling resistance and Road Gradients analysis
Operating cost analysis.



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Paper written on project work carried out in partial fulfilment of B.Sc. Eng. (Mining Engineering)

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