An area located ~60 km north-west of Andamooka was taken up to explore the IOCG - related Cu-Au-U-REE potential of buried but poorly known Proterozoic basement rocks that lie on the western side of a prominent gravity/magnetic complex of anomalies, that conceivably could host Olympic Dam type mineralisation due to that deposit's relatively close proximity. A study of existing moderate resolution aeromagnetic data showed that in general the area is non- to weakly magnetic, and is bounded to the north-east and east by broad magnetic highs. Several indistinct north-west striking features transect the central part of it. Existing gravity coverage was poor, and insufficient to permit any 3D gravity modelling. During the first licence year, holder Metex commissioned the reprocessing and imaging of the most recent aeromagnetic data, and acquired some new gravity data. 215 stations were read during October 2007 at a semi-detailed 2 km x 500m station spacing, infilled to 1 km x 500 m over the central part of the licence area. This work defined an east-west gravity trend with two clusters of anomaly highs apparent along it. During licence Year 2, the licensee updated its exploration model to include one moderate priority gravity anomaly target with an inferred depth of between 300 and 600 m, plus another six targets, some coinciding with low order magnetic anomalies, where the depths to source were somewhat greater, possibly >800 m, but were poorly constrained by the current gravity and magnetic data. It was recommended that additional much more detailed ground gravity survey data be acquired to lessen the exploration risk, entailing infill to 400 m x 200 m and 200 m x 100 m station spacing. However, late in 2008 the Commonwealth Government's Department of Defence directorate at Woomera precluded Carbon Energy from having any on-ground access to the tenement “for the foreseeable future”. During licence Years 3 through 5, legally gaining access onto the subject licence for conducting mineral exploration remained denied due to its location within the WPA Core Area of Operations. Late in 2010, all of the geology and exploration data pertaining to the licensee's Gawler Craton Project tenements were reviewed by geological consultant David Tonkin. He confirmed a likely depth of cover at Hidden Swamp of around 700 to 800 m. However, although discrete gravity anomalies are present there, Tonkin believed that they are unlikely to represent IOCG bodies because of their lack of association with any areas of magnetic response reflecting an IOCG alteration system. At the end of 2011, at the time of a meeting to arrange final execution of the long awaited Arabunna Peoples Native Title heritage agreement covering the company's other Gawler Craton Projects, Energia Minerals suddenly became aware that the actual custodial authority of this agreement did not cover EL 3683. Therefore Energia immediately began re-assessing the Native Title claim situation with a view to establishing contacts with the other relevant claimants (of the Barngarla Native Title claim area and the Kokatha Uwankara Native Title claim area) to try to establish a heritage agreement set that would cover the entire licence area. During licence Year 6, after the renewal of tenure as subsequent licence EL 5111, the legal requirements for gaining on-ground access to the WPA were eased by an official announcement made on 5/10/2012, with the tenement now occupying a newly classed Woomera Prohibited Area Defence Periodic Use Zone 1. This particular zone (one of three, each having differing levels of access rights defined) would be open to non-defence use for 225 days of the year and would be closed for 140 days of the year. The government's streamlined administrative change allowed Energia Minerals to make plans to conduct Native Title heritage clearance surveys prior to doing detailed ground gravity and magnetotelluric geophysical survey work. An application for the grant of a Deed of Access to the WPA was submitted to the Commonwealth Government in early 2013. During licence Year 7, the licensee attempted to attract a joint venture partner, but was unsuccessful. An approved Deed of Access to the WPA was obtained in June 2013, but the conduct of the proposed ground gravity and MT surveys was postponed while an internal review of the geology and previous exploration was performed in August. It concluded that the depth to basement generally at Hidden Swamp is probably in excess of 900 m, so careful prioritisation of anomalies would be necessary prior to drill testing at least one target in the tenement. No field work was done on EL 5111 during the last nineteen months of tenure, before a decision was made to fully surrender the licence.