Exploration of the buried Palaeoproterozoic basement rocks of the north-eastern Mabel Creek High for possible economic IOCG type mineral deposits has targeted geophysical features that the Anglo American - Goldstream Mining joint venture considered to be prospective. Following an initial detailed assessment of previous exploration done in the area, a regional tectonic interpretation of the area was made by consultant Leigh Rankin, using all available data. Drill targets were identified in the region of the previously identified Cadi prospect, and during July 2002, 2 vertical diamond drillholes for a total penetration of 525 m were completed here. Hole AD3 reached basement at 96 m depth while rotary/mud drilling the precollar, and then passed into a sequence of highly variable quartzo-feldspathic gneisses which it remained within until the hole's total depth of 258.4 m. No mineralisation was observed in the basement interval. Hole AD4 reached basement at 53.3 m depth while rotary/mud drilling, and passed into a sequence of variable sodic gneisses exhibiting some calc-silicate alteration towards the base of the hole at 266.6 m. Rare weak late stage carbonate veining containing rare sphalerite and galena was observed in the drill core, but no significant metal values were returned from assayed intervals. The poor drilling results obtained by Anglo American in these drillholes served to downgrade the perceived IOCG potential of the Cadi prospect area. Early in 2003, a ground gravity survey was acquired over the entire southern sub-block of the licence area, as part of a larger survey crossing onto adjoining tenements; a total of 1053 gravity readings were recorded at variable station spacings ranging from 400 m x 1600 m to 200 m x 400 m. When interpreted, this new data gave further definition to a complex weak gravity/magnetic feature seen in the vicinity of Aquitaine Australia Minerals' historical 1981 drillhole SCH01. To assist with understanding the basement geology of the region, stored drill cores from historical diamond drillholes completed in the licence area were inspected at the PIRSA Core Library in March 2002, and were relogged by Goldstream Mining's geologists. A number of samples were taken from both diamond and percussion drillholes, to submit for petrological and geochemical evaluation. During June 2003, 40 orientation soil geochemical samples were collected along a line laid out over the Cadi prospect, and assayed for a multi-element suite. No anomalous assay values were recorded. During October 2003 a small infill ground gravity survey (36 stations read on a 400 m x 800 m grid) was acquired over a geophysical target which had been identified adjacent to a major fault structure running along the southern side of Lake Cadibarrawirracanna, within the subject licence's northern sub-block. Anglo American's subsequent interpretation of the gravity data downgraded the potential of this target, and because no other viable IOCG type targets could be discerned within the complex geophysical anomaly located near drillhole SCH01, Anglo then decided to withraw from the Mount Woods JV agreement as of December 2003, returning the tenement ownership to Goldstream Mining. Over the following year, Goldstream reviewed the data returned to it by Anglo, and work done for the company by a consultant using gridded residual gravity data and interpreted basement geology generated 7 possible IOCG targets meriting geophysical modelling of source depths and geometry. Two of these targets, WS11 and WS15 in the licence southern sub-block, were given high priority for delineation. However, during 2005 attention was shifted to a third, more shallow target, the WS22 anomaly at the Coolawarra prospect. Part of a planned programme of IP profiling was carried out across this anomaly, which appeared to reveal a polarisable body at depth, but the survey was discontinued owing to its unsuitable configuration and diminished sensitivity arising from the presence of saline groundwater. No field work took place on EL 2883 during 2006. Preparations were made for a 2-hole deep RC drilling programme to test the WS22 gravity anomaly, but this work was postponed due to lack of rig availability and adverse weather conditions which prevented on-ground access.