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Grant Couston

Principal Geophysicist


Grant, our Principal Geophysicist, has close to 20 years’ experience at a geophysicist predominately in the mineral exploration industry. Originally from Perth, WA, he graduated with Honours from Curtin University before working for several geophysical contractors, covering projects throughout Australia and overseas. A later focus on DHEM saw him providing consulting services to various WA based nickel explorers, before taking a position with Ivanhoe Australia as a Senior Geophysicist, supporting their exploration team with multi-commodity exploration in NW QLD. Grant has experience with; IOCG; Sediment-hosted Cu; Ni sulphide; Porphyry Cu/Au; Uranium. Grant is well experience and up to date in all relevant geophysical techniques and is highly proficient in industry standard processing, modelling and visualisation software.

Recent Projects

  • IOCG and base metal exploration, Cloncurry region QLD
  • Project review; including data compilation, target review and target generation, Broken River Province, QLD
  • Data review and target generation of VTEM data, NW QLD
  • 3D Magnetic inversion modelling using Geosoft MVI, Etheridge Province, QLD
  • Design and execution of large scale HeliSAM survey including magnetic and EQMMR 3D inversion modelling.
  • In-mine and underground TEM loop design and DHEM program execution, Osborne Mine QLD.
  • Ground gravity acquisition, PNG
  • Magnetic modelling and interpretation for water bore siting, Dalby QLD
  • Induced Polarisation design, modelling and interpretation, Au-Cu-Co deposit, NW QLD


  • Greenfields and brownfields project generation and targeting
  • Proficient in; design, execution, processing, modelling and interpretation of – airborne, surface and borehole EM – gravity – magnetics – radiometrics – 2D and 3D IP – SAM/MMR – MT – hard rock Seismics
  • Field program management in Australia and world-wide for a broad range of airborne, surface and borehole geophysical surveys.
  • Effective verbal and written communication
  • Data compilation, open file searches and review


  • BSc (Hons), Geophysics, Curtin University WA (1999)
  • Active Member ASEG