In a continuation of exploration for economic deposits of gold and base metal mineralisation in the Lake Labyrith area, joint venture operator MIM Exploration carried out a proprietary 'MIMDAS' geophysical survey (utilising combined dipole-dipole IP and magnetotelluric methods) over the large, 17 km x 15 km Labyrinth gravity anomaly that partly lies on EL 2636, which had previously been investigated in 1998 by acquiring a 796 station detailed gravity survey. MIM's 3-D inversion modelling of the resulting gravity data had indicated a deep source body (> 1200 m below surface), but the shallowest depth point modelled was seen to concur with a magnetic anomaly, Kingsnag, that formed the principal objective of the MIMDAS coverage. The resistivity and magnetotelluric data obtained at Kingsnag did not provide MIM with enough encouragement to remain in the joint venture. Possible economic iron oxide - associated copper-gold (IOCG) mineralisation became the focus of new work commenced by Minotaur Resources as joint venture operator after it farmed-in to the Dominion Gold - Resolute Resources tenement package (ELs 2636, 3024, 3120 and 3121) on 10/12/2003. During December 2003 Minotaur undertook target generation infill gravity surveying at a station spacing of 1 km x 2 km (426 stations) to complement the earlier PIRSA and MIM 1 km x 4 km gravity coverage. This caused BHP Billiton to elect to participate also in the Labyrinth Joint Venture, initially by funding a more detailed gravity survey (284 stations) acquired in May 2004, to help delineate seven anomalies selected as drill targets. In September and November 2004 RC drilling (3 vertical holes for a total penetration of 749 m) and diamond drilling (2 HQ/NQ core holes totalling 633.2 m) over the major ~20 mGal regional Bouguer gravity anomaly, targeting IOCG-style mineralisation related to lesser gravity highs lying south and south-east of Lake Labyrinth, encountered deformed Palaeoproterozoic sandstone, conglomeratic sandstone and calcitic-dolomitic limestone, but evidence of significant alteration and mineralisation were absent down to a depth of 420 m. The rocks sampled are all of average density, and thus the source units causing the regional positive gravity anomaly still remain enigmatic, but are considered to lie at too great a depth to hold economic potential. Additional gravity surveys were conducted across the Labyrinth JV tenements during March-April 2005 (105 stations) and August-October 2005 (818 stations), incorporating both local detailed infill surveys and regional reconnaissance surveys over previously poorly covered regions. With respect to the subject EL 3252, the Gosse North survey used a station spacing of 500 x 500 m and comprised 45 stations, while the Kingsnag East survey used a station spacing of 400 x 400 m and comprised 185 stations. This work defined a positive gravity anomaly at Gosse North having an areal extent of 3 x 1.5 km and an amplitude of ~2-3 mGal. At Kingsnag East, near the Wallabyng Range, a 2 mGal anomaly with an areal extent of ~2 x 2 km in an L-shape configuration was interpreted to reflect shallow Palaeoproterozoic banded iron formation (Wilgena Jaspilite) rather than IOCG-style mineralisation. However, stronger positive gravity anomalies of IOCG interest were identified at Labyrinth South (5.5 mGal) and Labyrinth West (4 mGal). The former anomaly lies near the margin of the Harris Greenstone Belt and is situated between flanking, high-amplitude magnetic anomalies. One RC drillhole (TD 259 m) was drilled into it, penetrating assumed Archaean metabasalt and quartz+feldspar+biotite gneiss (based on deformational fabrics seen in drill chips) that contain no anomalous mineralisation or evidence of the presence of an IOCG type alteration system. The basalt and associated mafic rocks are presumed to adequately account for the positive gravity anomaly. During the latter part of 2005, Minotaur Exploration conducted an aircore drilling programme of 19 vertical holes for a total of 557 m on the western portion of the Labyrinth JV area, which sought potential gold-only mineralisation in proximity to Hiltaba Suite granite bodies which lie along a NW-trending fault that terminates the easterm extension of the Archaean Lake Harris Greenstone Domain. No anomalous gold values were recorded, the highest value being only 2 ppb, and no anomalous Cu, Pb or Zn values were obtained. However, anomalous silver, cerium and lanthanum were detected in saprolitic granite in drillhole TA05A033 from the depth interval 8-12 m, and cerium values to a maximum of 985 ppm Ce plus associated elevated phosphorus were also obtained from the neighbouring drillhole TA05A034. During a field reconnaissance trip to the southern part of EL 3252 undertaken in 2007, 8 outcrop samples were collected from a single exposure of haematite-rich ironstone which is characterized by quartz blebs and cavities filled with white clay or zeolite. The exposure lies on the northern slope of a broad rise characterised by limited exposures of foliated and deformed, Palaeoproterozoic conglomeratic sandstone of the Labyrinth Formation. Although the samples contain consistently high iron contents (17.1-25.0% Fe), their gold content is disappointingly low, at or below the detection limit of 0.01 ppm. The levels of other IOCG mineral system vector elements, such as Cu, Ag, Pb, Zn, Ce, La and Y, were uniformly low also. It was concluded that the iron represents a secondary enrichment within a Tertiary palaeosol weathering profile. No other work addressing base or precious metals was carried out by Minotaur Exploration after mid-2007 until the date of the subject data release. By an agreement reached with the Labyrinth Project partners in February 2006, Toro Energy secured the uranium exploration, mining and processing rights over all four of the project ELs. During the period September 2007 to September 2008, Toro carried out a review of the historic drilling data for the tenements (which had no uranium assay information), and this revealed the presence of reducing material (carbonaceous bands) in palaeochannel infill sediments. An aircore drilling programme was generated to traverse the palaeochannel headwaters and main channel, aimed at determining if uranium mineralisation is present in the palaeochannel sediments, and if so, is it present in concentrations that would be suitable to pursue via further investigations that could lead to economic extraction. During November 2007, 31 aircore drillholes for a total penetration of 2087 m were completed to test Kingoonya Palaeochannel sediments on EL 3252, yielding maximum assay values of 18.75 ppm U3O8, 56 ppm Th and 1600 ppm Zr. The uranium where present in the drill cuttings is seen to exist mainly in very low concentrations, often below the XRF method detection limit of 4 ppm. Separate analyses performed on groundwater samples obtained from three of the drillholes also gave extremely low concentrations of uranium (< 280 micrograms per litre), which suggests that the degree of local transport of uranium cations is insufficient to have created an economic uranium deposit in the licence area. In view of these poor prospectivity indications, it was recommended that Toro Energy should exit the Labyrinth Joint Venture.