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Browsing by Author "Du Plessis, JJL"

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  • Belle, BK; Van Zyl, FJ; Du Plessis, JJL (2002-01)
    The primary objective of the Road Header (RH) environmental control project is to minimise the dust exposure of workers while maintaining adequate ventilation conditions in RH headings in order to optimise the working ...
  • Du Plessis, JJL; Bryden, DJ (1997-01)
    In response to the need for enhanced precautionary measures to safeguard mine workers in collieries from the consequences of methane ignitions in a heading, the coal mining industry has expressed the desire for the development ...