Geophysical ground surveys are typically carried out when a geological area of interest has been identified and exploration requires more detailed investigations. Boliden carries out electromagnetic, electrical, magnetic, and gravimetric ground surveys. Ground surveys allow for user defined parameter specification with the aim to improve depth of investigation and spatial resolution for quality modeling and interpretation.
Underground geophysics is typically performed on drillholes but can also be deployed within underground mine infrastructure. Once a drillhole is finished geophysical methods can be conducted down the hole to further improve depth of investigation and spatial resolutions at depth.