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Our Team

We are an international consortium of consultants to resource industries world-wide. A shared background in structural geology is our common link, but each brings specialist skills that allow us to provide troubleshooting expertise to a large range of problems. We provide solutions both as independent consultancies and in collaboration.


Rod Holcombe: Structural geology, oriented core analysis, 3-D modeling, training. Rod is now semi-retired except for desk jobs and advice


Tim Coughlin: Structural geology, target generation,  project design & management


Nick Oliver: Geochemistry, hydrothermal pathways, structural geology, geochem-geophys-structure data fusion. Nick is currently the principal consultant at HCOVG. Contact Nick...


Rick Valenta: Geophysical interpretation, target generation, structural geology, 3-D modelling, project design & management


News & Events

 Fusion and interpretation of drill datasets, July 16, 2021. On-line course, 9AM to 5PM Perth time, together with UWA Centre for Exploration Targeting. Presenter Nick Oliver (HCOVGlobal), also June Hill (CSIRO), coordinator Nico Thebaud (UWA).   Circular and REGISTRATION brochure here 

Nov 15, 2020
The second print-run for the print version of the Rod Holcombe text: Mapping & Structural Geology in Mineral Exploration is now almost sold out (1 copy left) although the digital format remains available. This is a text aimed at professionals who may be in need of a refresher in practical structural geology. The book puts practical aspects first with theory at the back just in case you need to delve a little deeper. The book is also available in pdf form for on-line download.

More details, and links to the commercial distribution site, can be found under the Downloads menu here.


  • On-site & off-site consulting

  • Project to regional scale structural geology

  • ​​3-D Modeling

  • Integrated geochemical analysis

  • Integrated geophysical analysis

  • ​Hydrothermal systems & pathways analysis

  • ​Project generation & review

  • Due Diligence​

  • Country entry studies

  • QA/QC Services

  • Training & mentoring

Free Downloads
  • Structural geology Windows software

  • Oriented drillcore measurement and procedures manual©

  • ​​Workshop manuals: managing large hydrothermal systems©

  • Oriented drillcore printable wrap-around protractor templates©

  • Structural plotting templates

  • ​Spreadsheet template for producing geochemical isocon diagrams©

  • GIS (Mapinfo) software

  • Datum and projection fundamentals in GIS

  • Structural geology training animations