EL 3603, located on the Stuart Shelf approximately 50 km south of Olympic Dam, was taken under licence to explore for possible economic iron oxide - associated copper-gold-uranium (IOCG-U) deposits of Olympic Dam style that may have formed in Palaeoproterozoic basement, while it was thought that the area might also contain Athabasca Basin - style unconformity-hosted uranium deposits within the overlying Mesoproterozoic sedimentary cover sequences. Western Mining Corporation Ltd (WMC) had explored in the region from 1976 to 1981 for both IOCG-U and unconformity - related uranium deposits, their primary target being Olympic Dam-style IOCG-U. Within the subject Oak Dam area, WMC had drilled a single exploratory diamond hole, CSD1, at Cocky Swamp in 1980. The hole was sited to test a 2 mGal residual gravity anomaly coinciding with an east-west trending 500 nT magnetic anomaly lying on the edge of the Arcoona regional gravity structure. CSD1 encountered low grade copper sulphides in iron oxide-altered sediments and volcanic rocks over the depth interval 898 to 980 m. Pyrite and chalcopyrite dominated the sulphides, ocurring as disseminations and aggregates, as well as inclusions in magnetite-rich zones. The best drill core sample assay result was 2 m @ 1.05% Cu. The drilling of CSD1 showed that the basement at Cocky Swamp lies beneath 865 m thickness of Neoproterozoic and Mesoproterozoic sediments. During licence Year 1 of El 3603, operator Southern Uranium Ltd compiled, examined and re-interpreted a significant amount of past explorers' data, examined stored drill cores from previous exploration, planned and executed an infill gravity survey, and gained a Site Heritage Clearance. A re-interpretation of the existing gravity and magnetic data, made by the licensee's geophysical consultants ASIS International, found that WMC's hole CSD1 had penetrated the modelled magnetic body but had missed the adjacent gravity target. This anomaly was now modelled by them as being caused by an 800 m diameter, dense body with an SG of 3.2 g/cc and depth to top of 850 m. The model's parameters were supported by the basement geology met with in CSD1, which had entered a magnetite skarn at 865 m vertical depth, this rock having a sporadic overprint of Cu-Au mineralised haematite. In their opinion, the adjacent gravity anomaly was likely to be a haematite-rich zone of an iron oxide altered system, that should have potential for associated economic copper, gold and uranium mineralisation. In order to refine the proposed geophysical model, an infill detailed gravity survey was conducted during May 2007, consisting of 820 gravity stations read on 200 m x 200 m grids surveyed across two prospect areas including Cocky Swamp. This 2.5 mGal residual gravity feature was thereby confirmed, but the Bradley Dam anomaly in the north-western corner of EL 3603 was downgraded because it has insufficient amplitude. During licence Year 2, exploration by Southern Uranium comprised further reviews and compilation of available drilling, geological, geophysical and other relevant data, plus the interpretation of the infill gravity data collected during the first twelve months, the conduct of a ground magnetic survey with readings taken at 125 m intervals over Cocky Swamp prospect, the relogging of stored diamond drill core from hole CSD1 and the re-assaying of 129 drill core samples, continued liaison with the Commonwealth Department of Defence and landholders regarding programme timing for access to the Woomera Instrumented Testing Range, and the planning and execution of a single exploratory vertical NQ diamond drillhole at Cocky Swamp during March-April 2008 (CSDDH02 drilled to TD 1232 m, including 300 m of RC precollar) to test the target gravity and coincident 350nT magnetic anomalies. During licence Year 3, petrographic studies were conducted on 21 samples of drill core from hole CSDDH02, collected from within the depth interval 781.43-1115 m. Rock sampled from down to 922 m depth were interpreted to include mafic intrusions of the Gairdner Dyke Swarm and metasediments of the Pandurra Formation. Beneath an interpreted unconformity at 923 m, older Proterozoic granitoid, ?volcanosedimentary and calcsilicate rocks constituting basement were seen to contain strong to intense hydrothermal alteration and skarn type features. Several samples contained traces of copper mineralisation, but only one sample from 1075.56 m had significant amounts of chalcopyrite. This hole's drill core was also sampled at one metre intervals within the basement section, and sent for laboratory geochemical assays, but no significant assay values were returned. By the middle of the year it became evident to the JV partners that future access for mineral exploration within all of the Woomera Prohibited Area might soon be wholly prohibited by the Department of Defence. The managing director of Southern Uranium then commenced urgent lobbying of PIRSA and the South Australian Chamber of Mines and Energy to try to ensure that this threat to the industry did not eventuate. Due to the removal of its legal right to access, the JV placed on hold planned new work on the licence, including more drilling to assess the IOCGU potential of the Cocky Swamp (renamed Jindivik) prospect. For this reason, no field work took place on the subject area during licence Years 4 and 5, and tenure was allowed to lapse at expiry of term.