Lesley Sharon Jeffrey

Principal Geologist (Coal)
SRK Johannesburg
265 Oxford Road 2196 Illovo, South Africa PO Box 55291 2116 Northlands
+27 11 441 1111
+27 11 880 8086



  • All aspects of geology related to coal exploration, from greenfield studies to initiation of mining


Lesley Jeffrey has been involved in the field of coal geology for over 30 years. Her expertise includes:

  • Design, implementation and management of coal exploration programmes;
  • Geological assessment of coal deposits;
  • Computer modelling of tabular ore bodies, particularly coal;
  • Coal quality assessments;
  • Coal resource/reserve estimation;
  • Coal feasibility and due diligence studies and Competent Person Reports;
  • Coal model and resource estimation audits;
  • Geological assessments



SRK Africa