EL 4493 lies in the far north of South Australia, abutting the Northern Territory border, and is centred about 30 km east of the Stuart Highway. It falls entirely within the confines of Tieyon Station. Recently, a portion of the licence totalling 218 square km or ~24.4% of its original area, in the north-eastern part, has been relinquished due to Tianda Uranium (Tianda) having not met its commitments for licence total exploration expenditure over the past four years. Proterozoic bedrock present within the licence area belongs to the eastern margin of the Musgrave Block, and is represented mostly by adamellite but also by dolerite dykes and gneiss. Although bedrock outcrops widely across the tenement area, it is extensively and unconformably overlain by Jurassic-Cretaceous Algebuckina Sandstone, which in turn is overlain by Tertiary Cordillo Silcrete, forming a hard caprock which erodes to a mesa-and-butte landscape. In some places, the Musgrave Block adamellite has a high uranium content. When it becomes mobilised by weathering, this uranium can and could have formed economic secondary chemical precipitate deposits in either the Algebuckina Sandstone, or also in calcretes that might have formed in palaeodrainage channels within the tenement (as for the Yeelirrie, WA style of uranium deposits). Reconnaissance mapping carried out along the dry bed of Hamilton Creek revealed that Recent calcrete deposits at least a metre thick exist along a considerable length of the bank. These are often overlain by orange-red unconsolidated aeolian sand. Within the now relinquished portion of the tenement, 5 rock chip geochemical samples and 2 soil samples were collected for multi-element analysis during 2010, and the outflow from one water bore was sampled and assayed for a suite of trace elements that might be dissolved in the groundwater [the relevant assay results subset is herewith released to open file]. During May 2011, Geotech Airborne flew a helicopter-borne VTEM survey for Tianda over the Hamilton Creek floodplain section lying within the licence area. 214 line km of AEM and aeromagnetic data were acquired along east-west flight lines spaced 3.2 km apart, utilising a 49 m mean sensor altitude above ground level. The survey appeared to have defined several discrete, well-developed and roughly north-south trending buried channels running down the western side of the tenement, as well as some shorter channels in the central and eastern parts of the licence area. These features will form the focus of future exploration by Tianda.