An area centred ~40 km west of Port Augusta has been explored for possible economic buried IOCG and other significant metallic mineralisation, which could have formed in the vicinity of the inferred subsurface continuation of the northern Roopena Shear Zone where it is concealed by younger Proterozoic rocks of the south-eastern Gawler Ranges district, such as the Gawler Range Volcanics, Pandurra Formation, Umberatana Group sediments and Beda Volcanics. After the Kimban Orogeny ceased, a probable lengthy continuation of activity of this major crustal penetrative tectonic feature, which represents the domain boundary between the Olympic Domain and the Spencer Domain in this part of the eastern Gawler Craton, was seen as promising for focussing fluid flows into dilational structures spatially associated with this part of the shear zone. However, all of the exploratory drilling which had been done in the area previously had not gone beneath the Gawler Range Volcanics (GRV) stratigraphic section, so the nature of the geology which is present beneath this unit remained unknown. Within parts of the Olympic Domain, notably at Prominent Hill, the base of the GRV acts as a trap concentrating dense IOCG-related mineralising fluids which were introduced along splays to the domain bounding Karari Shear Zone during the Hiltaba magmatic event, and therefore it was expected that a similar situation could apply at Six Mile Hill. There, gravity highs with inferred sources lying at ~250 m depth, close to the predicted base of the GRV, were targeted as representing possible dense haematite-rich mineralised bodies. The targeted emplacement zone of interpreted structural disruption runs north-south along the eastern boundary of the tenement. Within and adjacent to it, there appeared to be much geological variation in the depth to the top of the GRV. Existing drillholes in the Spencer Domain to the west of the zone had encountered the GRV near the surface, whereas others in the Olympic Domain to the east of the zone had found it lying at ~300 m depth. The few past holes located within the structural contact zone did not intersect the top of the GRV, but only penetrated cover to ~100 m depth. No work at all was done on the subject EL 4494 during its first four years of tenure due to unresolved corporate financial constraints. However, on 9/6/2014, a larger, adjoining area to the east of the Six Mile Hill tenement was applied for by Westernx. It sought to take up this additional ground to cover other, possibly IOCG prospective gravity highs which it had lately seen in regional, 2006-2007 survey data derived from the DMITRE gravity database. Grant of this licence was made by the Minister of Mines on 13/10/2014 as EL 5498 Mount Arden (see Env 12818). During the fifth licence year, in September 2014, when some funding did became available through a corporate takeover of Westernx, Daishsat were contracted to read a total of 1400 new gravity stations across parts of these two adjoining licences, on initial 500 m x 500 m regular grids that were later infilled in part to 250 m centres. 727 of the new gravity stations were located on EL 4494. 3D inversion modelling of the new detailed gravity data undertaken by licensee parent Kingston Resources Limited defined a number of shallow gravity high features in the east of the tenement near the inferred subcropping shear zone, which it was thought could represent IOCG targets, so several priority drilling targets were selected that lay on the Olympic Domain side of the shear zone. In recognition of its attractive exploration model, and as an approved part of the SA Government's PACE Frontiers collaborative drilling with industry initiative, Kingston was successful in being granted $2 million of exploratory drilling subsidy funds by DSD for carrying out up to 2400 m of fully cored stratigraphic diamond drilling in a 5-hole programme that would be undertaken within the two licences comprising its Six Mile Hill Project. The high level of outside-derived drill funding was because of Kingston's participation in this Stage 1 of the Mineral Systems Drilling Program (MSDP) that involved the Deep Exploration Technologies Cooperative Research Centre (DET CRC) as well as the Geological Survey of South Australia, CSIRO, Olympus-Zeiss and Boart Longyear, plus other research participants and service company affiliates. This program had been set up with an initial aim of unravelling mineral systems associated with newly discovered mineralisation developed along the southern outcrop margin of the GRV sequence, and also involved Minotaur Exploration in other planned drilling work on that company's Peltabinna and Mount Double project areas. Besides obtaining new stratigraphic and other regional geological information, an important aspect of the MSDP was to map any alteration sequences that occur within the GRV and underlying rocks, and incorporate this knowledge into regional geochemical databases that will enable better recognition of subtle and distal alteration haloes related to known IOCG deposits. The MSDP also provided an early opportunity to field test DET CRC's revolutionary new technologies such as the Wireless Sub, Fluid Management System, AutoSonde, AutoShuttle and especially, Lab-at-Rig, in a conventional 24/7 soft and hard rock diamond drilling situation. Early in 2015, a set of pre-drilling orientation data was collected by both Kingston and its MSDP partners from previous holes drilled within EL 5498 and the surrounding region, for which the partners geologically relogged and hyperspectrally logged the holes. One hole, TR3, that was drilled by Dampier Mining in 1981 and is located within the Olympic Domain within EL 5498 on the edge of the shear structure projection, yielded some interesting information. It had reached the top of the GRV at ~350 m depth, having intersected ~60 m of Pandurra Formation overlying the GRV, and ~40 m of Beda Volcanics with Backy Point Formation overlying the Pandurra. Weakly elevated copper was identified, persisting from the Beda Volcanics beds through to the bottom of the hole at 400.4 m depth, with a peak content of 1150 ppm Cu evident within the Backy Point Formation. The interval of GRV that was penetrated had weak copper anomalism, up to 500 ppm Cu. Kingston thought that the overall sediment package which had been encountered within TR3 would be present within its Olympic Domain planned holes, and it interpreted the weakly anomalous copper in the overburden to be an indication of copper mineralisation at depth, awaiting discovery. The MSDP drilling campaign commenced on 1/8/2015, with the first hole located on EL 5626 Six Mile Hill. Another three holes were completed before the Kingston - supported part of the campaign ended on 22/10/2015. Three fully cored vertical holes, MSDP 01, 03 and 04, were drilled on the subject EL 5626 Six Mile Hill, addressing the 15DDSM001, 002 and 004 gravity targets respectively. Drillhole MSDP01, sited on Kingston's 15DDSM001 target, was designed to test a >2.77 g/cc gravity feature which had a modelled source depth of 171m, located within the interpreted Roopena Shear Zone extension. It was planned to penetrate the lower units of the GRV sequence and then enter previously untested basement underlying them. The intent was to continue drilling down to a depth of 1000 m, or until basement had been adequately tested. In actuality, the hole was carried to a total depth of 1116.80 m, ending in rhyolitic volcanic rocks which are interpreted to be a part of the GRV. The hole had entered the GRV sequence at just 30 m depth, having intersected weathered to fresh Tapley Hill Formation (THF) sediments from ~10-30 m. Minor sulphides including chalcopyrite were observed in basal layers of the THF. Drillhole MSDP03, sited on Kingston's 15DDSM002 target, and located ~2.7 km south-southwest of MSDP01, was designed to test a >2.77 g/cc gravity feature which had a modelled source depth of 112 m, and was also located within the interpreted Roopena Shear Zone. It too was planned to test the lower units of the GRV and the underlying unknown basement. This hole entered the GRV sequence at 8.2 m depth, with the lithology interpreted to be the Eucarro Rhyolite in the Upper Volcanics. It next encountered Roopena Basalt at 102.22 m depth, and remained in this unit until EOH was reached at 262.6 m depth. Drillhole MSDP04, sited on Kingston's 15DDSM004 target, and located ~7.1 km west of MSDP01, was designed to test a >2.77 g/cc gravity feature with a modelled source depth of 452 m, which lies at the centre of the licence area, some distance into the Spencer Domain. Again, it was intended that this hole would be carried to a depth below the base of the GRV which was sufficient to identify and test underlying basement lithologies. MSDP04 entered rhyolitic GRV rocks at 7 m depth, which were interpreted to be the Eucarro Rhyolite, then mainly remained within the GRV sequence until encountering homogeneous interpreted Gairdner Dolerite at 437.15 m depth, and thereafter stayed within this younger intruded formation until reaching EOH at 843.9 m. An even younger thick intrusive body, of interpreted Roopena Basalt, had earlier been intersected over the depth interval 89.7-264.59 m. Although the drilling results obtained at the Six Mile Hill Project by the MSDP campaign were disappointing because all four holes had failed to reach the bottom of the GRV sequence, the intersected depths of dense lithological units did closely match Kingston's modelled gravity shells. This meant that the gravity modelling had been physically accurate, but unfortunately the density features targeted in fact were arising from dense mafic units. After Stage 1 of the MSDP had finished, the DET CRC conducted a trial surface and downhole seismic survey within the project area utilizing the MSDP drillholes; interpretations of the seismic data made subsequently suggested that the base of the GRV may lie as deep as 2 to 2.2 km in what had previously been regarded as more prospective parts of the Six Mile Hill Project area. This realisation prompted Kingston Resources to fully surrender EL 5498 Mount Arden in September 2016. After conducting further interpretations of the new drilling and geophysical results from the Six Mile Hill tenement in the following months, Kingston conducted no work on the retained two licences between May 2016 and May 2017. By this later time, the company had decided to abandon exploration for IOCG mineralisation under cover, in favour of becoming a lithium and gold explorer. Accordingly, it applied to DPC to surrender the subject licences' ground.