Exploration for possible economic deposits of primary uranium mineralisation, undertaken within the subject licence which is centred approximately 90 km south-west of Whyalla, initially consisted of a field reconnaissance using a spectrometer, and geochemical sampling of prospective radioactive outcrops. Previously obtained images of an open file mosaic of airborne radiometric survey data had indicated that the Yalanda Hill region appears to be the source of significant uranium channel anomalies. Data from a good quality open file airborne magnetic/radiometric survey flown over much of the tenement was acquired and re-processed, confirming the presence of several uranium and thorium channel anomalies. These anomalies generally coincide with mapped outcrops, indicating that field prospecting using scintillometry and spectrometry to guide rock chip sampling had the potential to directly locate outcropping uranium mineralisation. A study of records from past exploration confirmed that many of the radiometric anomalies had not been investigated on the ground. To rectify this shortcoming, a series of reconnaissance prospecting field trips were made by staff from Adelaide Exploration, during which 785 spectrometer readings were taken at around 20 localities. From the more radioactive outcrops, 104 rock chip samples were collected which were assayed for uranium and thorium by XRF analytical techniques. In addition, a series of petrological and mineralogical investigations were made on the two most strongly uranium anomalous samples, EU018 and EU542, in an attempt to determine the uraniferous phase or phases present. The maximum uranium assay result (2300 ppm U, or 2711 ppm U3O8) came from sample EU018 collected from the Dog Fence 1 locality, which is a council excavation beside a road. Other localities which returned samples assaying greater than 100 ppm U included Tower Hill, Secret Rocks and Secret Rocks West. The petrographic studies concluded that the uranium-bearing phase in sample EU018 is not an opaque mineral (e.g. uraninite); however, large amounts of monazite and some zircon, both of which may contain thorium and uranium, were observed. Microprobe analysis of the monazite showed that it does contain enough uranium to account for the high XRF assay value obtained. Exploration carried out during licence Year 2 included the conduct of PACE Initiative - subsidised exploratory drilling at the Ethiopia prospect located in the central western portion of EL 3473, to investigate whether significant basement-hosted uranium mineralisation occurs associated with a radiometric anomaly identified from existing airborne survey data and confirmed by the previous year's surface reconnaissance spectrometric sampling. The prospect lies within folded and metamorphosed Hutchison Group metasediments and older basement gneisses, including the Miltalie Gneiss. The areal extent of the uranium anomaly was identified as 2.5 km x 1.2 km trending north-south, wherein it exhibits both uranium and thorium signatures, since follow-up surface geochemical sampling had identified XRF values up to 36 ppm U and 220 ppm Th. During early March 2007, 41 vertical open RAB holes were drilled for Adelaide Exploration and PIRSA along five east-west traverses, for a total penetration of 1430 m, as PACE Project DPY4-33 (cf. this drilling project final report, held separately in Env 11516). The drillholes made weakly anomalous uranium intercepts trending north-south and lying mainly to the west of the previously identified anomalous outcrop zones. The intercepts were mostly encountered towards the base of the drilled section, often within a sequence of weakly weathered sillimanite-bearing paragneiss, and defined a coherent but weak bedrock uranium occurrence also having anomalous levels of thorium. This result presented indirect evidence that the uranium at Ethiopia is, at least in part, contained within a primary phase that is soluble under conditions that exist in the regolith environment. This finding led Adelaide Exploration to invoke two possible target models for uranium occurrence on EL 3473: • Hard rock, vein/shear - hosted uranium mineralisation, formed where hydrothermally active structures cut across gneisses which already have a high uranium - thorium background, thereby potentially upgrading uranium values. • Sediment - hosted uranium deposits, formed by the dissolution of uranium during weathering and its subsequent precipitation in chemical traps. The probable host rocks for this type of deposit could be alluvial sediments (most likely), but could perhaps also be deeply weathered saprolite units that have developed from bedrock having a high uranium background content. During licence Years 3 and 4, minimal field work was conducted on the tenement owing to the licence being the subject of joint venture negotiations that were initiated in May 2009 and finalised in September of that year, after Southern Uranium had conducted several reconnaissance field trips to revisit localities sampled by Adelaide Resources. During licence Year 5, regional and limited infill soil sampling was conducted across the tenement (565 samples) on either 1 km x 1 km or 1 km x 500 m grid patterns, for partial leach geochemical assaying of the minus 1 mm soil particle size fraction. Prior to carrying out this work, a great deal of legal document preparation was needed, including the negotiation of Waivers of Exemption and Access and Compensation Agreements with the many landholders across the area, and the submission to PIRSA and gaining of acceptance of a DEF for "early" exploration activities within the several Conservation Parks and Vegetation Heritage Agreement Areas scattered across the tenement. The preparations also included a more lengthy negotiation with the private owners of the Secret Rocks Reserve, and the drafting of an exploration protocol for "early" exploration activities tailored for this specific area. No field work was done on the renewed EL 4665 during licence Year 6. A planned semi-detailed ground gravity survey across the entire licence area on a 1 km x 1 km grid was not undertaken. During licence Year 7, Investigator Resources conducted infill soil geochemical sampling on a coincident Au/As/Cu/Ag anomaly in the north-eastern corner of the EL, with 28 samples taken on a 500 m x 500 m grid. The assay results were disappointing, as no coherent elevated values were returned. In this area, no strong basement features could be discerned on the TMI image either. During licence Year 8, more infill soil geochemical sampling was done in the north of the EL on some minor pathfinder element anomalies seen there (51 samples taken). Again poor assay results were returned. This led to the JV partners eventual deciding to surrender their tenure of EL 4665.