A small licence area taken up approximately 130 km north of Marla, near the SA/NT state border, is being explored for possible economic secondary uranium mineralisation formed in sandstone or calcrete. Prior to Tianda Resources deciding to apply for the ground, airborne geophysical data was obtained from Geoscience Australia and processed by the company. Later, in 2008, ASTER multichannel infrared satellite remote sensing data was also obtained and processed at Terra Search's Perth office. The airborne geophysical data showed that only very modest radiometric anomalies exist within the now relinquished north-eastern portion of the licence, and consequently, the licensee's exploration effort has to date been concentrated elsewhere. Likewise, the ASTER data showed no features of inferred economic interest within this relinquished portion. However, during 2010 the ASTER data was used to map the outcrop geology here, since it delineated one particular formation rather better than was revealed on aerial photography. Also, another ASTER image was generated by spectral processing to reveal carbonate, chlorite and epidote alteration. During 2008 and 2010, reconnaissance field excursions were made to the tenement, but no surface exploration has been undertaken within its recently relinquished portion. In particular, no geochemical sampling or ground scintillometric surveys were performed, nor any mapping of outcrop. It appears that this area was a drainage source rather than sink for deposition of uranium from elsewhere.