An area located immediately west of the Denison Inlier of the Proterozoic Peake and Denison Ranges, approximately 90 km south-east of Oodnadatta, was explored for possible roll-front style sedimentary uranium deposits that may have formed within oxidised Mesozoic sandstones which rest unconformably on the Proterozoic basement, since the latter comprise some rocks known to have high background levels of contained uranium. Prospective Mesozoic sandstone and conglomeratic units aggregating from 54 to 91 m in thickness were tested during the period December 2006 - February 2007 by shallow rotary mud drilling (11 holes for a total penetration of 1375 m), with the drillholes bottoming either in subcropping Permian sediments or in kaolinitic saprolite derived from the Adelaidean and Mesoproterozoic basement. Scant anomalous radioactivity was detected by downhole gamma ray logging, and no significant uranium content was revealed in the drill cuttings (maximum value 25 ppm U). Low level anomalous gamma ray log responses (to 100 counts per second) found in hole AG0609 were followed up by drilling three additional holes in the vicinity. Radiometric logging of these holes confirmed that minor radioactivity exists in both the Algebuckina Sandstone and in an underlying carbonaceous to lignitic claystone horizon. The former unit's radioactivity, to 113.58 cps, falls within the depth interval 64-72 m in hole AG0721, occupied by medium to coarse grained quartz sandstone containing much clay. The best gamma log response recorded within the underlying carbonaceous sediment horizon came from hole AG0723, where a coherent anomaly of up to 117.79 cps lies within the depth interval 91-111 m. Abundant lignite fragments were recovered from the depth interval 92-100 m. The overall locally unfavourable reducing geochemical environment was recognised by the common presence of pyrite-cemented sandstone beds in both the Algebuckina Sandstone and the Cadna-owie Formation. During September 2007, Geosolutions Pty Ltd flew a heliborne RepTEM electromagnetic survey over EL 3412 for Red Metal, the intent being to use conductivity profiles to try to map the basement topography and thus better identify potential entrapment sites for uranium mineralisation. This survey consisted of east-west flight lines spaced 500 m and 1 km apart, for a total coverage of 150 line km within the licence. The EM data was interpreted during the following year, and the conclusion was reached to cease uranium exploration, based mainly on the results of other exploration conducted by Red Metal in its surrounding tenements.