b'AEGC 2023Short abstractsIP data is re-examined and inverted using current software inThrough a series of examples where multiple methodologies both 2D profile and 3D. The results are then combined withhave been employed over the same ground, the differences in 2 additional generations of newer pseudo 3D survey IP datathe approaches will be presented. The variations in resolution overlapping in specific areas of the original survey. The IP datawill be presented with real world data to contrast the real is then combined with two different methodology airbornedifferences/similarities and hence the advantage/disadvantage magnetic data (multi-gradient and single sensor) sets that is inof the various available methodologies and how this relates turn inverted in 3D, additional processed plan maps created,to survey design and target discrimination. Additionally the and integrated with the IP. Additionally, historical and recenteconomics of the various methodologies will be discussed in diamond drilling and rock physical property studies have beenrelation to the type of target being explored for.integrated to further develop the geophysical and geological model of the prospect to further guide exploration.The economics of looking deep with geophysics. Why The combination of old, valid data, revisited with currentlook deep when Im only interested in the first XXXm?inversion software, has provided a framework upon which all subsequent geophysical data, drilling, assays, historicalRobert Hearstmine development and geology can be integrated. The result is an improved understanding of this Au belt hosted in theSouthern Geoscience Consultantsrocks of Archean Canadian Shield. As a result, the impactThe growing acceptance of the mineral systems approach to of changing ground conditions related to season and yearore deposit generation and fertile areas in the near surface (the of acquisition of the various IP surveys and the similar, butinfamous Hand of God example of Olympic Dam) is forcing different methodologies employed is highlighted. Similarlymany companies to rethink how they conduct their exploration the difference in methodologies in acquiring the airborneprogrammes. However, often this approach is overridden by magnetic data and the impact this has on inversion of the datathe economics of what can be brought into production the is also highlighted. quickest and at the lowest cost, hence I am only interested in an Combined, the inclusion and combination of all geophysicalextractable resource that is within 200 m or 300 m of the surface. and geological data is a powerful tool in the definition andA resource, if of sufficient size and grade, within 200 to 300 m of identification of the structure, and emplacement of thesurface is essentially considered to be open pitable and hence mineralising fluids and hence allowing for the typing of thecan often be brought into production in a short timeframe. As historical deposits, possibility of remaining ore in the vicinity ofa result, in many mining camps the majority of the geophysical the historical deposits and the prospectivity of the remainder ofexploration that has been completed is restricted to at best the concession. 200 m or 300 m of surface. An understanding of the overall mineralising system is therefore absent and the possibility of higher grade resource at greater depth is unknown.Airborne magnetic surveys, everything you wanted to know but were afraid to ask. In this discussion the advantages of conducting a potentially deeper looking geophysical programme early on in the Robert Hearst exploration of a project is examined from both scientific and economic viewpoints, even if the original scope is to look Southern Geoscience Consultants shallow for resources. The advantages of applying deeper looking geophysical methodologies early in an exploration will Many exploration projects require an airborne magnetic surveybe discussed with a view to the advantages, limitations and to be completed however many exploration managers do notoverall exploration cost. This is a topic that is not addressed in understand the cost/benefits of the various methodologiesmost academic programmes. Often the prospect of looking available hence the selection of a particular methodology maydeeper is not considered outside of some well known mining not be the most appropriate for the target being explored for. Atcamps (Sudbury, Athabasca Basin, Witwatersrand Basin, etc.). present one can chose from a plethora of methodologies: However the quest for additional resources to support increased Fixed wing demand for many minerals is requiring deeper exploration Rotary wing under cover. Examples of the benefit of looking deep early in Drone exploration are provided with respect to fiscal optimisation.Fixed wingRotary Feasibility of Seismic While Drilling without the use of a Single Sensorbird or stinger pilot signal based on synthetic modelling.Multi-sensor Emad Hemyari, Roman Pevzner and Andrej Bonabird or stingers3 sensor horizontal gradient Curtin University3 sensor horizontal and vertical gradientSensor(s) Seismic-While-Drilling (SWD) is a passive seismic technique Proton Precession or Cesium, or Potassium where a drill bit is a seismic source. SWD is used to infer Magnetic tensor gradiometry subsurface geological information. Thus, several SWD methods Quantum have been developed and used for various applications in the Oil & Gas and Mining industries. Some of these methods To the exploration manager the choice can be confusing, theemployed receivers installed in the drilling Bottom-Hole-apparent benefits murky and the survey chosen (and the relatedAssembly (BHA) or tunnelling equipment, while others best practices) not understood. employed those on the surface or within nearby wells to 103 PREVIEW FEBRUARY 2023'