b'Geophysics in the surveysNewsFigure 3.Existing and planned Geoscience Australia and State Geological AEM surveys across Australia, May 2021. Surveys in progress and or recently completed shown against 100 m AEM depth slice for completed coverage. New surveys referenced include the East Resources Corridor (1), AusAEM20 (2), Mundi AEM survey (3) and the Great Artesian Basin survey programme (4).and other government agencies have significant geological and conductivity information from previous studies, including downhole conductivity logs, previously flown AEM lines and ground EM stations.Over the next two years, GA and CSIRO will work on further testing of various EM systems to establish the range as the definitive base-line for resolution, depth-of-investigation and system modification checks. In collaboration with some of the regions stakeholders, including the RAAF, Traditional Owners, Mining Companies and local community, it is hoped that both ground and airborne access can be better structured and facilitated.Victoria and South Australia Figure 4.The Jin Jin EM calibration range, Western Australia. Located 70 km to the north of Perth, theairborne gravimetry surveyproposed calibration range consists of two lines: line 90000 (12.5 km long) and line 10000 (70 km long) thatGeoscience Australia, in collaboration cover a broad range of host, cover, geology and salinity conditions. A procedure is currently being written to cover flying pattern and tolerances required. Note that a section of line falls under restricted air-spacewith Geological Survey of Victoria, (western portion) and extends across to a new area of significant exploration interest (Julimar). Surveyor-General Victoria, and the South 25 PREVIEW JUNE 2021'