A area of piedmont outwash from the central eastern Flinders Ranges, which is centred ~24 km north-east of Reaphook Hill and ~25 km south-west of the Lake Frome shoreline, has been explored for buried sedimentary uranium mineralisation of roll-front style that might have formed within Tertiary or younger palaeochannel strata and which could be amenable to in situ leach (ISL) extraction technology. The area is underlain by the distal south-western edge of the Frome Embayment, where a local embayment in the basin margin exists. In general, a sequence of 10-35 m of Quaternary alluvial fan deposits of the Willawortina Formation overlies approximately 125 m of Miocene Namba Formation lacustrine mudstones with minor sands. The latter unit unconformably overlies fluvial sandstones of the Eocene Eyre Formation or Cretaceous mudstones of the Bulldog Shale that are considered to be ‘basement’. During the first licence year, no field work was done as the joint venture partners could not yet legally access EL 3288 owing to not securing a formal clearance arrangement with the Native Titleholder land custodians. During licence Year 2, on 17/7/2006, a transfer of interest agreement was signed between grant licensee Paladin Energy Minerals NL (Paladin) and Deep Yellow Limited (DYL), who took over all of Paladin's 90% share of the three Siccus JV tenements. DYL immediately commenced land access negotiations with the Adnyamanthanha No. 1 Native Title Claimant Group (Adnyamanthanha), to put in place a Native Title Mining Agreement for exploration on EL 3288. This agreement with the Adnyamanthanha was signed on 15/8/2006 and was registered on 22/9/2006. From inspecting past work records, DYL noted that previous exploration within the tenement was very limited, and although it had done enough to delineate the basic geology, it had insufficiently tested for the presence of buried uranium mineralisation; in particular, two uranium-anomalous drillholes located on the edge of a palaeochannel system had not been adequately followed up. In addition the main channel fill, which drains off uranium rich source rocks to the south, had only been tested by a single drillhole. To better delineate palaeochannel development within the tenement, a 728.6 line km airborne TEMPEST electromagnetic survey was flown over all of it during December 2006 along north-south flight lines 1 km apart, using a 120 m mean sensor elevation above the ground surface. Interpretation of the preliminary AEM data confirmed the presence everywhere of a flat lying to east dipping conductive unit that DYL correlated with the Miocene Namba Formation, the host unit to known roll-front uranium mineralisation elsewhere in the Frome Basin. The AEM data also outlined the previously interpreted Wyambana and Erudina palaeochannels. During licence Year 3, the JV partners made preparations to conduct a proposed 2000 m, 12-hole rotary mud drilling programme. The programme aimed to intersect significant thicknesses of Eyre Formation sandstones and to test for the presence of uranium mineralisation within the Erudina and Wyambana palaeochannels down to a depth of approximately 180 m. An aboriginal heritage protection work area clearance survey for the drilling programme was performed along selected drill traverses, and permissions were given for the work to proceed there. During licence Year 4, interests in the Siccus Joint Venture were changed to become Uranio Limited (UNO) 70%, DYL 20% and Signature Resources 10%, after UNO farmed in and became the exploration operator. The planned drilling occurred during February-March 2008, but with a reduced scope due to higher than expected hole wireline logging costs: only 8 vertical open holes were completed for a total penetration of 1599 m, and afterwards a gamma ray tool was run in each. Many technical problems were experienced both with obtaining steady and representative returns of drill cuttings, and while collecting the downhole gamma ray log data. Despite this, the holes partially tested the southern and western sides of the paleo-drainage, where the historic radiometric anomalism had been detected - it was confirmed as being an essentially background grade, redox-related, Namba-hosted phenomenum. The gamma ray log traces from holes WA007 and WA008 each showed the same enigmatic spike in radioactivity, to a maximum of 420 cps (14 x background), the source of which appears to lie within a clay horizon. However, it was thought that the source may instead be in a thin blanket sand, samples of which were not returned to surface in the drill cuttings. A trace spotty yellow stain was recorded visually in the cuttings recovered from the depth interval 172-176 m in hole WA008, which was subsequently abandoned at TD 224 m while still within ?Eyre Formation sands and interbedded claystones, due to having no more drill rods. During licence Year 5, no work was done. Desktop studies were made to aid deciding where to perform future drilling. It was stated that targets exist along untested parts of the main paleodrainage, and further to the west of hole WA008, where the redox interface in Eyre Formation sands could be expected. An application was made to PIRSA by UNO's successor Manhattan Corporation Limited for approval to renew licence tenure for a second term. During licence Year 6, on renewed EL 4527 covering an ~25% reduced area, no field work was done due to the unseasonal heavy rain and flooding that occurred there. No further work ensued during the remaining three years of tenure, before a decision was made to let tenure lapse at the expiry of Year 9.