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Grant Couston

Principal Geophysicist


Grant, our Senior Geophysicist, has over 15 years’ experience at a geophysicist in the mineral exploration industry. He has geophysical exploration experience in a range of commodities; IOCG; Sediment-hosted Cu; Ni sulphide; Porphyry Cu/Au; Uranium. Grant is very proficient in industry standard processing, modelling and visualisation software.

Recent Projects

  • IOCG and base metal exploration, Cloncurry region QLD
  • Underground TEM loop design and DHEM program execution, with EM conductor modelling, Osborne Mine QLD.
  • Design and execution of large scale HeliSAM survey including magnetic and EQMMR 3D inversion modelling.
  • Magnetic and radiometric image processing, SA
  • Geophysical evaluation of Hampden deposit, QLD
  • Gravity acquisition, PNG


  • Historical data compilation and review
  • Greenfields and brownfields project generation and targeting
  • Appropriate survey technique selection, planning and QC processing of; airborne EM, gravity, magnetics/radiometrics and SAM; ground gravity and magnetics; surface and downhole EM; 2D and 3D IP.
  • Highly experienced in managing field programs for a broad range of airborne, surface and borehole geophysical surveys.
  • 3D modelling/inversion, visualisation and integration/interpretation of potential field and electrical geophysical techniques with geological data.


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