The Robin Rise exploration licence, centred approximately 35 km south-southwest of Coober Pedy, covers portions of the Palaeoproterozoic basement domain known as the Coober Pedy Ridge, an east-northeast trending magnetic block of variable magnetic intensity separating the Mount Woods Inlier to the south-east from the Mabel Creek High to the north. Hiltaba Gold Pty Ltd, operating under its subsidiary entity Stellar Resources Limited, took up the ground in the hope of being able to find economic deposits of non- to weakly magnetic, iron oxide - associated copper-gold (IOCG) style mineralisation that may have formed within concealed Proterozoic basement lithologies. During the initial licence year, the company's preliminary Coober Pedy Ridge geophysical data modelling, and application thereto of the properties of known geophysical responses recorded over the Prominent Hill and Carrapateena IOCG deposits, enabled it to define four anomalies within the licence area deemed worthy of follow-up detailed gravity surveying. This surveying occurred during September-October 2005, when 1800 gravity stations were read along 93 lines distributed across the four anomalies, to generate 200 m x 200 m prospect grid coverage. Following the interpretation of the new ground gravity data in conjunction with an assessment of previous drillhole geology, structural features and local aeromagnetic relief, two of the anomalies were selected for drill testing. At the Robins prospect, detailed gravity and magnetic data defined two targets in the vicinity of where previous drilling had encountered intrusions of the Hiltaba equivalent “Balta” Granite. At the Georges prospect, detailed gravity data defined a residual anomaly of approximately 2 mGal amplitude that coincides with a demagnetised zone located both immediately to the south-east of a strong magnetic anomaly and close to the inferred Coober Pedy Ridge domain boundary. Estimated depth to basement at both prospects was around 100 m. During licence Year 2, an application for the grant of PACE Initiative part-subsidy funds to assist in the drill testing of the Robins and Georges gravity targets was submitted to and accepted by PIRSA, with drilling scheduled to commence during November 2006. Before this drilling occurred, Red Metal Limited signed a joint venture agreement with licensee Hiltaba Gold in October 2006, and immediately took over the licence operatorship from Stellar Resources, still with the intent to pursue conceptual targets for IOCG style mineralisation in terrain having a relatively low intensity magnetic character, as a consequence of the emerging recognition that haematite-dominant systems of this style may have very low association with magnetic anomalism. A further gravity survey of 1693 stations, acquired generally at 400 m x 400 m grid spacing, with some closer grid spacing of 200 m x 200 m, was completed by Red Metal during November 2006. When this gravity data was combined with that collected by Stellar Resources in 2005, several more targets were defined for drill testing. The PACE - assisted drilling programme (designated as Project DPY3-46) was conducted from late October to early December 2006. Four vertical rotary mud precollared/diamond core tailed holes were completed for a total penetration of 540.3 m (199.5 m cored). The basement encountered in these holes comprises metamorphosed felsic intrusive and metasedimentary rock types overprinted by calc silicate-dominant alteration typical of IOCG terrains, and gabbro intrusive rock - derived amphibolite having retrograde chlorite-pyrite alteration. Such lithologies were interpreted as sufficient to produce the gravity density contrast anomalies which had been targeted. Only low order sulphide mineralisation was intersected. Weak copper sulphide mineralisation associated with magnetite was intersected on one target (in hole RR-06-04) [to read the final report for this PACE Initiative Year 3 collaborative drilling project, see open file Env 11390]. During licence Year 3, in September 2007, Red Metal conducted a further gravity survey, in part consisting of 142 stations at 400 m x 400 m grid spacing read within the confines of EL 3336, which served to complete detailed gravity coverage in the north-western corner of this tenement area. Geophysical image processing of the augmented regional gravity dataset highlighted gravity anomalies which it was planned to follow-up with drilling in 2008. A field inspection was conducted by Native Title claimants to clear the proposed drill sites. At the start of licence Year 4, in May 2008, Red Metal drilled 7 vertical RC holes for 1102 m to test selected gravity and low-order magnetic features that lie near interpreted major basement structural breaks. These holes penetrated various types of high metamorphic grade gneissic rocks, but no significant haematitic ironstones or hydrothermal alteration typical of an IOCG mineralising system were encountered. Nor were any anomalous values returned from laboratory assaying of 170 drill cuttings samples taken at 2-metre or 6-metre depth intervals. Because of the disappointing results, Red Metal elected early in 2009 to withdraw from the joint venture. During licence Year 5, in September 2009, Western Plains Resources Ltd (WPG) entered into an option agreement to purchase the subject EL 3336 Robin Rise and the adjoining ELA 339/09 Lake Woorong from Stellar Resources Limited. WPG’s main interest in the tenements was the known but sparsely drilled Penrhyn coal deposit that is situated within EL 3336. The published characteristics of Penrhyn coal suggested that it is suited for use in a variety of applications but particularly as a feedstock to energy production plants utilising one of the emerging clean coal technologies. In March 2010, in the vicinity of MESA's CPC5 hole, 4 vertical rotary mud / PQ diamond partly cored holes for 507 m were drilled by WPG at 1 km intervals [but lineally out of number sequence] along a single traverse across the Penrhyn sub-basin of the Phillipson Trough, aiming to better define the width of the central part of the sub-basin and to test the continuity of coal seams across strike within the host upper Mount Toondina Formation. Hole PCWP001 entered the Permian sequence at a depth of 61 m and intersected 10 coal seams within it down to 121 m, before the hole was terminated at a depth of 150 m. The two thickest and most significant of these seams were one 3.9 m thick commencing at a depth of 72.9 m, and another 4.9 m thick at commencing at a depth of 88.6 m. Four of the seams intersected were thin (<30 cm). The second hole, PCWP002, proved more difficult to drill due to the presence of running sands in the overburden and Permian sequences. However, it did intersect two coal seams over the depth intervals 90.4-91.8 m and 106.8-109 m, before the hole washed out and had to be abandoned at 123 m. Below the base of the Algebuckina Sandstone, hole PCWP03 encountered only a thin interval of the Mount Toondina Formation with no significant coal seams. Drilling was stopped at 123 m in Stuart Range Formation deltaic cross-bedded sediments, since it had succeeded in defining the northern limit of coal within the sub-basin. Below the base of the Algebuckina Sandstone, hole PCWP004 also intersected only minor Mount Toondina Formation with no coal seams. The hole was completed at 111 m in competent sandstone and conglomerate beds of the Boorthanna Formation, indicating that this last hole had succeeded in defining the southern limit of coal within the sub-basin. 18 coal ply and 16 roof and floor bed cored samples obtained from the first two drillholes were submitted for coal quality and rock property testing. The resulting values for raw ash content, as received moisture content, and coal calorific value were all closely comparable to those of the main seams within the Penrhyn coal deposit. Four samples were subjected to water washing to determine how much NaCl could be removed in that manner. It appeared that between 43 to 63% of the sodium and 69 to 82% of the chlorine could be removed, while furthermore, the washing was just as effective in removing salt from the coarse particles of raw coal as it was when acting upon dry fines. The latest coal appraisal drilling, in combination with the results from the earlier MESA test holes [see RB 96/00025], confirmed the presence of two significant and continuous seams that are buried within open pit mineable depth range and have a cumulative thickness of the order of 8 m. A zone centered on WPG's drill traverse was selected for doing follow-up resource definition drilling, via a planned programme comprising 25 holes for an estimated 3500 m, with holes sited on a 500 m x 1000 m grid spacing. WPG envisaged that this programme had the potential to outline a JORC compliant coal resource of between 100 and 130 Mt. Eight of the holes would be cored to provide samples for additional quality test work and the remainder drilled open hole. All holes would be geophysical logged. WPG considered that there are several possible uses that may support the future development of the target resource within the Penrhyn coal measures: · a source of supply to the South Australian power stations upon exhaustion of existing reserves at Leigh Creek; · potentially as an export thermal coal; · a source of coal for a coal-to-liquids project similar to that planned for other Arckaringa Basin coal deposits near Coober Pedy; · to provide coal for a small custom designed power station that would supply electricity to a magnetite concentrator for the Hawks Nest project; and · as either a reductant for and/or as a source of energy for, a pig iron plant to be fed with iron ore from Hawks Nest and other WPG iron ore projects in the northern Gawler Craton. During licence Year 6, on renewed EL 4525, WPG completed a 31 hole resource definition drilling programme on the Penrhyn coal deposit over the period March-June 2011. A total of 19 rotary mud open vertical holes and 12 vertical RC precollared and cased off, then PQ triple tube diamond cored holes were completed for totals of 2852.3 m of open hole drilling and 1783.7 m of diamond coring. Results enabled the definition of four significant coal seams, together with two coal bearing stratigraphic horizons that are host to between two and four seams that range in thickness from 0.4 m to 4.0 m. In broad configuration, the coal seams form an elongate depression that is 3.8 km wide and has a strike extent over the area drilled of 10 km. The seams dip inwards to the axis of the trough at angles that are less than 5 degrees. There has been some post-depositional tilting of the strata evident from Drill Section #7 onwards, running towards the south-east, with steeper dips to the south and flatter dips to the north of the axis. A total of 169 coal seam 1-metre long or less ply samples, together with a representative selection of roof and floor samples, were sent to HRL Laboratories in Melbourne for conducting quality and washing testwork akin to that carried out on the samples from the 2010 drilling. 23 ply samples from seams cored in holes PCWP-033 and PCWP-034 were air freighted to the Evergreen Energy K-Fuel coal preparation and combustion efficiency test plant in Wyoming, USA. A resource estimate based on 3D wireframe models for each of the seams defined a preliminary, JORC compliant in situ coal resource of 352.5 Mt, of which 185.37 Mt were classified into the Measured category, and 150.51 Mt were classified into the Indicated category. It was believed that a good chance remained for identifying extensions to the known seams in five places beyond the defined resource zone which when combined form a conceptual exploration target that, based on the drill hole and coal quality data currently available, was estimated to be in the range of 300 - 330 Mt. During licence Year 7, WPG continued to evaluate the potential viability of economic extraction of the low rank coal from the Penrhyn coal deposit. A major hindrance to the work emerged when Evergreen Energy Inc., the owner of the K- Fuel coal beneficiation technology patents, became insolvent and was declared bankrupt. Prior to this, WPG had formed an American based entity that was tasked with advancing that leased technology for use in upgrading the coal from Penrhyn. Significant delays were experienced in the company’s dealings with the Administrator in regard to recouping its money from the liquidation of the Evergreen assets, and as at the end of the reporting period this matter was unresolved. A further programme of resource definition drilling with the potential to double the size of the deposit was planned. The potential for using Penrhyn coal to generate the power required for a proposed magnetite concentration plant at the Giffen Well magnetite BIF deposit was also scoped to provide input to the pre-feasibility study for that deposit. During licence Year 8, WPG did no new work. Plans were made to conduct ground magnetic surveys over three of previous explorers' untested basement targets with inferred IOCG or DSO haematite potential. An in-house database was compiled of available prior hard rock drillhole data for the surrounding region. During licence Year 9, a total of 73.4 line km of ground magnetic surveys were acquired in July-August 2013 at the Fomax, Lady Isabella and Peel prospects. Modelling of the ground magnetic data identified potential drill targets at the Lady Isabella and Peel prospects. An aircore drilling programme which would total 1450 m was planned to commence in May 2014, but due to a severe weather event at Robin Rise in April 2014, access onto the tenement for heavy vehicles was temporarily restricted. The drilling was postponed until later in 2014. During all of licence Years 10 through 14, no further work was done by WPG. Portions of ground totalling 157 square km or ~19.2% of the area of renewed EL 5718 were relinquished in June 2017. Plans were made later in 2017 to do RC drilling and acquire a ground EM survey at the Peel prospect, but neither activity eventuated before a final decision was made at the end of Year 14 to allow tenure of EL 5718 to lapse. On 30/7/2018 WPG, after making unsuccessful attempts to recapitalise their business or restructure their operations, and with the likelihood that the company would become insolvent, appointed Ernst and Young as Voluntary Administrators. On 8/8/2018, RSM Australia Partners were appointed as Receivers and Managers. The bankruptcy avoidance process remains ongoing, but from their initial assessment of the WPG assets the Administrators decided not to renew tenure of EL 5718.