An area located approximately 10 km west of Andamooka township and 30 km north-northwest of the Olympic Dam mine, within the prospective G2 structural lineament corridor, was taken out to explore for possible similar type economic, deeply buried Proterozoic basement-hosted iron oxide - associated copper-gold deposits that might be related to a number of previously insufficiently tested geophysical anomalies. Following the conduct of a review of available open file geophysical and geological data, new work initially undertaken by Havilah Resources comprised the acquisition of 2300 line km of infill aeromagnetic data at 200 m flight line spacing, done concurrently with AGSO's 1999 TeiSA-funded regional aeromagnetic survey flown over the ANDAMOOKA 1:250,000 mapsheet area. Depth-to-source interpretation of images of the resulting merged magnetic datasets, carried out during early 2000, revealed only one magnetic anomaly of interest that was considered to arise from a body lying at a shallow enough depth to constitute a viable drilling target. This anomaly lies immediately to the south-east of the Double Swamp regional magnetic anomaly, which was the closest feature previously investigated by Western Mining Corp., but which had not been drilled, as its source had been considered to be too deep. In view of this apparently much reduced prospectivity, an 85% reduction in the original licence area was requested from and approved by PIRSA. Ongoing difficulties emerged post-1999 in resolving Native Title issues with respect to obtaining permission for on-ground exploration activities, so a planned gravity survey over the 3.0 km x 1.1 km Mattaweara magnetic feature and follow-up drilling were delayed. In the meantime, the licensee switched its attention elsewhere, to its higher priority mineral exploration and appraisal projects on its other tenements within the Curnamona Province (e.g. at Kalkaroo and Portia). After making a direct approach to Native Title claimants for the Mattaweara area early in 2002, Havilah was able to obtain the necessary site clearances to allow its on-ground work programme to commence. Shortly thereafter a detailed gravity survey was completed over the Mattaweara magnetic anomaly by Solo Geophysics for the licensee (372 stations read over an 8 km x 10 km grid at 500 m x 500 m spacing, infilled to 250 m x 250 m near the centre of the anomaly). A pair of residual gravity highs up to 3 mGal in amplitude were mapped on the southern flank of the main Mattaweara regional gravity anomaly. During June-July 2002, the more northern of the two gravity highs (lying closer to the centre of the Mattaweara magnetic anomaly) was tested by drilling a single vertical RC hole to investigate an inferred dense source modelled at around 400 m depth. This drillhole, RCM1, intersected the expected Stuart Shelf Cambrian and Neoproterozoic metasedimentary succession, which ended in a 2 m thick band of Nuccaleena Formation cut below 553 m depth. Red gritty Pandurra Formation sandstones were entered at 555 m depth, and the hole stayed in these until drilling was terminated at 602 m depth due to the driller having used all of the available drill rods. No indications of highly magnetic or dense rocks were seen while drilling, nor was any mineralisation, and assaying of selected drill cuttings samples did not return any significant results. Because neither basement nor the geophysical target had been reached in RCM1, Havilah decided to use other information obtainable from this unsuccessful drillhole to try to refine future drill targeting, through making magnetic susceptibility and specific gravity measurements on the drill cuttings samples, to use as inputs to its computer theoretical model of basement properties. It also decided to conduct downhole EM probing to determine if any sulphide-rich zone exists near the drillhole. Both of these extra tasks were done, the downhole EM survey being carried out by Solo Geophysics in August 2002. However, inspection of the EM data profiles did not show signs of any obvious conductive body occurring near the drillhole. No further work was carried out on the renewed tenement during the next two years. Eventually Havilah transferred its ownership of the licence (then designated EL 2964) to Monax Mining, effective on 20/7/2005. When Monax took control of exploration, it chose to acquire another regional gravity survey (118 stations on a 1 km x 1 km grid) over the Mattaweara regional gravity anomaly during December 2005 to better establish its outline. This new data also delineated the discrete gravity high that had been mapped by Havilah as being positioned on the south-western flank of this gravity anomaly, and confirmed that it overlies the southern flank of the Mattaweara magnetic anomaly, a coincidence which Monax deemed as being indicative of underlying basement that was prospective for Prominent Hill style IOCG mineralisation. Accordingly, in June 2007, Monax re-entered the Havilah RCM1 drillhole with a diamond drill rig, and continued drilling with NQ rods down to TD 912.8 m. Mesoproterozoic basement, consisting of massive banded iron formation, was reached at 787.7 m depth. The substantial thickness of BIF indicated as likely to exist at Mattaweara is believed to explain the semi-coincident magnetic and gravity anomalies that were targeted. Tenure of the licence was allowed to lapse due to it lying within the Commonwealth Department of Defence's newly created 'Restricted Area' of the Woomera Probited Area.