As part of a larger ongoing exploration programme occurring in adjoining SMLs across central Eyre Peninsula, the SML 645 licensee carried out reconnaisance groundwater sampling and analysis, airborne radiometric surveying, studies of existing drill cores and cuttings and open-hole drilling (26 holes, total 9303 feet), partly to check for a possible geochemical redox cell associated with uranium occurrences (assays to 0.029% U3O8) discovered in two earlier exploration holes drilled near Tuckey by Kerr-McGee Corp., and also to extend the uranium search south-westwards from Konanda. To address the former objective, a detailed gravity survey (6 square miles, 165 stations) was acquired in the vicinity of drillholes DP24 and DP30 to locate the location of a sinuous U-bearing fluvial channel. In the area between Rudall and Tuckey, significant uranium values were found to be associated with Tertiary channel sands infilling palaeovalleys on Precambrian basement; 5 of 8 drill holes that encountered the channel sand had anomalous radioactivity due to uranium mineralisation. In the second area near Konanda, uranium appears to be tied up in lignite and carbonaceous shale. The general area is prospective, but deposits would not be large, although to offset this, depths of access for mining would probably not be great. Kaolin clay deposits with commercial promise were intersected as a thick section by drilling in the vicinity of holes DP13 and DP14. Further drilling and testing is required for determining the economic potential of both uranium and kaolin.