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Expert Witness - Mining Due Diligence

Andrew Van Zyl, Simon Hanrahan, Mark Noppe, John Pfahl
Friday, September 1, 2017
First presented: 
Lawyer Monthly Magazine
Project Evaluation

Read more articles from the SRK Insights September 2017 issue.

In this interview with Lawyer Monthly magazine, SRK experts from around the globe offer their insights into mining due diligence. Andrew Van Zyl from South Africa, Simon Hanrahan and Mark Noppe from Australia, and John Pfahl from North America gave astute answers to the following questions:

  • What is the process you and your team undergo when conducting due diligence studies for mining?
  • What makes SRK’s due diligence reviews so highly regarded?
  • In what ways do SRK’s clients benefit from these reviews?
  • How important is it to manage client expectations?
  • How often do problems surface when undergoing mining project reviews? What is your team’s next step from this?
  • Can you explain the importance of mining data management for your clients?
  • What could go wrong, and possibly lead to litigation, if due diligence is not properly executed?
  • Moreover, how have environmental concerns affected your line of work? Have these changes affected the types of cases that could be taken to court?

Click here to read the article.

Feature Author

Mark Noppe

Mark is a geoscientist with over 30 years’ mining industry experience in exploration, mining geology, practical geostatistical applications, resource estimation and reporting, mine reconciliation, feasibility studies, technical audits and due diligence. Mark has worked in South Africa, Western Australia and Queensland as a geologist and consultant and provides advice, training and mentoring in all aspects of orebody knowledge. His technical experience covers a wide range of projects, geological and mining settings, and commodities, including bauxite, diamonds, coal, copper, cobalt, iron ore & magnetite,
lead-zinc, sulphide and laterite nickel, niobium, potash, phosphate, PGE and gold projects in Australia, New Zealand, South Africa, Botswana, Zambia, Mali, Tanzania, UK, Indonesia, China, Canada, Chile, Jordan, Uzbekistan, Kyrgystan and the Russian Far East.

Corporate Consultant (Geology and Project Evaluation)
MSc (Exploration Geology), MGAA, MCAID, FAusIMM(CP)
SRK Brisbane
Andrew Van Zyl


  • Mine and project valuation;
  • Mining conventions;
  • Economics;
  • Recent valuations greater than $ 1 billion for chrome, copper and Gold;
  • Technical adviisor to the Government of Cameroon for the Mbalam Mining Convention and rail and port concessions.


Andrew has been involved in the fields of Mining and Engineering.  His expertise includes

  • Technical advice during mining convention negotiations;
  • Financial/techno-economic modelling;
  • Exchange rates and macroeconomics;
  • Research and reporting;
  • Precious and base metals due diligence;
  • Project management (managing tenders, the detailed design of processes and equipment, estimation, the procurement and erection of the equipment and have managed the cold and hot commissioning of process plants;
  • Tender management (analysis of project financials and risk);
  • General management (developing, budgeting, marketing and completing projects);
  • Quantitative analysis including model development and strategic analysis;
  • Process engineering and commissioning experience;
  • Operation of process plants, including a rapid train loading terminal.
Director | Principal Consultant
SRK Johannesburg
John Pfahl
John Pfahl is a Mining Engineer with over 15 years of global experience in the mining industry currently serving as a corporate advisory consultant. John is an expert when it comes to investment analysis, strategic planning, risk analysis, capital markets and project valuation in the mining field. John has undertaken strategic planning and risk analysis exercises within the mining industry under a variety circumstances, but generally with a focus on long-term project development, market positioning and value creation.
Risk Management Specialist
SRK Denver
SRK Latin America