In exploration directed primarily at finding possible economic IOCG type mineral deposits within buried Mesoproterozoic to Palaeoproterozoic basement in an area located 25 to 70 km north-west of Olympic Dam, the licensee targeted density anomalies believed to originate in a high level volcanic zone on the northern margin of the Gawler Range Volcanics Province. During May 2008 an infill gravity survey was acquired over three such anomalies lying within EL 3960 (560 stations read at 250 m intervals along east-west lines spaced 750 m apart). The new survey data was integrated with the existing 2007 PIRSA Northern G2 Corridor gravity data and with previous 375m x 375 m grid spaced gravity data then also commissioned by Copper Range as an extension to the PIRSA survey. Residual gravity images were generated which suggested that a number of relatively dense source bodies are present at depths of 700-900 m. Basement mapping for Copper Range's project licence areas was undertaken by consultant David Tonkin, in order to assess the depth to basement when prioritizing gravity targets for drilling. The basement elevations were based on data from more than 2000 drillholes recorded on PIRSA's SA_GEODATA online database. Two palaeo-topographic highs appear to dominate the basement architecture, and both the Olympic Dam and Carrapateena deposits occur on these domes. This doming may be the result of greater Mesoproterozoic igneous activity associated with certain pre-existing crustal fracture features which transect the northern, eastern and south-eastern margins of the Arcoona caldera. The association of gravity anomalies within Copper Range tenements with the basement domes was used as part of the prioritization process. No work was conducted on EL 3960 during its second year, at the end of which tenure was allowed to lapse.