Leadership Team

DR STEVEN ZHANG   Research and Development Lead

PhD Earth Sciences • BSc (Hons) Physics & Mathematics

Functional Expertise

  • 16 years of experience in geosciences
  • Machine learning applied to geosciences
  • Advanced statistics
  • Innovation, Research and Development
  • Computational geology

LEON TOLMAY   Geostatistics Lead

NHDip. Mineral Resources Management

Functional Expertise

  • 42 years of experience in mining industry
  • Served as Chief Evaluator in charge of Geostatistics and Evaluation for Sibanye-Stillwater Gold Division, responsible for all resource and reserve modelling and classification
  • Skilled in Geostatistics, Base Metals, Gold, Mineral Exploration, Mineral Processing and Structural Geology
  • Compilation of training materials for Geostatistics courses


BSc (Hons) Geology

Functional Expertise

  • 11 years of multi-industry experience
  • Project Management
  • Diverse range of experience that includes mining, banking, IT and agriculture.
  • Responsible for marketing and business development strategy
  • Drawing up of all proposals and business plans