b'Geophysics in the surveysNewsOpen file company geophysics now available for download via MinViewDuring 2019 the Geological Survey ofMinView is an excellent platformGeology geodatabase. This allows users New South Wales (GSNSW) geophysicsfor viewing and analysing NSWto view the best available mapped team initiated a project to refreshgeoscientific data (Figures 46). Asurface geology and also to strip back the publicly available geophysicsnumber of useful features include: pre- the geological time zones and view the data in New South Wales by collating,set views for geological, geophysicalinterpreted geology of the Permiancataloguing and quality-assuring all theand geotechnical users; spatial and textTriassic basins, Pre-Carboniferous company geophysics acquired acrossdata searching options; drawing andorogens and the Precambrian the state over the past six decades.annotation capability; and the abilityprovinces.Where previously clients needed tofor users to import their own GIS files or directly contact GSNSW and requestlocated data. There are also downloadThe final stage of the geophysics the data, now all surveys can beoptions for a range of data includingrenewal project is to update the searched and discovered through thegeophysics, geochemistry, drilling andstatewide geophysical imagery GSNSW MinView web-based mappinggeology. Another highlight is the on- bymerging the highest quality application, and can usually beline delivery of the Statewide Seamless immediately downloaded.The first stage of the update was to systematically review each of approximately 800 geophysical surveys held by GSNSW, harvest technical specifications and other metadata, check that all submitted data were present and accurate, and create functional grids and images which honour the data. The harvested metadata forms the backbone of the new geophysical survey catalogue and the data delivery system.All survey boundaries are now displayed in a set of improved MinView layers, and quality assured and consistently formatted data are readily accessible. A public release date is provided for surveys that are currently confidential, with many of these surveys scheduled for release on 1 June 2021 as part of the Sunset Clause data project. Metadata and a thumbnail image for each openFigure 4.Screenshot of MinView company geophysics view. Survey boundaries of company airborne file survey can be displayed at themagneticdiometric (light blue), electromagnetic (red) and gravity gradiometry (dark blue) surveys are click of the mouse, allowing clientsshown on the map. New South Wales towns and rivers are also shown. The available layers for company to assess the quality of the selectedgeophysics are listed on the left-hand-side, including a layer for known surveys without digital data.survey and take a quick look before deciding to download. A great deal of forensic geophysics was required to ensure data, grids and images are fit-for-purpose and in useful form because the formats, conventions, and file structures of submitted company data varied enormously over the past 60 years. Despite the best efforts of GSNSW geophysicists, there are many company surveys for which no data, or only limited data (usually hard-copy plots), are known to exist. Clients are still able to view the boundaries and specifications of these surveys in MinView and download any reportsFigure 5.Output from a spatial search of the airborne company magneticdiometric survey layer in pertaining to the data. MinView, showing key survey specifications and the availability of data.25 PREVIEW APRIL 2020'