Four separate large portions of a long-held licence area abutting the SA/NSW state border in the vicinity of Mutooroo have been relinquished as part of statutory requirements. The following summary prepared by Minotaur Exploration describes work done on the now relinquished 200 square km of ground: - 318 calcrete geochemical samples were collected for assaying, and returned a maximum value of 14 ppb Au from a sample site located immediately south of Mutooroo Homestead; - 106 rock chip geochemical samples were collected for assaying, to target Broken Hill lode type lithologies recognised immediately south of Mutooroo Homestead and at another place located several kilometres to the north of there, and numerous samples were found to be highly anomalous in Pb, Zn, Ag, Co and Cu; - in July 2000, Fugro Airborne Surveys undertook the Mutooroo TEMPEST airborne EM survey which covered an area of approximately 105 square km and totalled 552 flight line km. The majority of the survey was done within the now relinquished portions of EL 5079 Mutooroo. Numerous conductivity anomalies were detected, and the inferred main anomalies were followed up by ground EM surveys; - as part of the 2010 investigation of potentially economic magnetite iron ore resources that are hosted in magnetite-bearing metasiltstone and metadiamictite in the Muster Dam and Maldorky areas, a detailed helimag survey was undertaken to better resolve the size and intensity of magnetic anomalies that appeared to be linked to magnetite-bearing metasediments. Approximately 39.9 line km of flight lines spaced 50 m apart were flown within the now relinquished portions of EL 5079 Mutooroo; - during 2006, moving loop ground TEM surveys were undertaken at the Dingo, Dingo North, MUT016 and Fallout Dam prospects. No conductive bedrock anomalies were detected at the Dingo, Dingo North and MUT016 prospects, so it was recommended that no further work be done at these prospects. At the Fallout Dam prospect, an “M-shaped” anomaly characteristic of a steeply dipping bedrock conductor was detected. Existing drillholes had intersected disseminated to massive pyrite-pyrrhotite mineralisation along with trace chalcopyrite. This sulphide mineralisation was the interpreted cause of the TEM anomaly. Because there were no remaining untested bedrock conductors in this prospect area, no further work was recommended; - in 2003, Haines Surveys undertook the Mutooroo Ridge gravity survey, with stations read at 200 m intervals along lines spaced 400 m apart, for a total of 980 stations. 818 stations occur within the surrendered portions of EL 5079 Mutooroo; - in 2006, Haines Surveys undertook gravity surveys at Dingo North and Fallout Dam using 200 m station intervals and 400 m spaced lines, resulting in a total of 82 stations at Dingo North and 144 stations at Fallout Dam. 27 stations from the Dingo North survey and 84 stations from the Fallout Dam survey occur within the surrendered portion of EL 5079 Mutooroo; - 113 soil geochemical auger sampling sites occur within the relinquished portions of EL 5079 Mutooroo. A maximum assay value of 3550 ppm Zn was returned from sample TMA2-09; - in early 2000, aircore drilling for bedrock geochemical sampling was undertaken along 16 north-south traverses, with 147 drillholes completed for a total penetration of 3279 m. 128 of the holes are located within the relinquished portions of EL 5079 Mutooroo. Bedrock samples from holes MAC-44, -79, -80, -145 and -146 were anomalous in Zn, Pb, Cu and Co; - a total of seven RC percussion and four diamond drillholes, for a total of 2469 m (comprising 924 m of RC percussion drilling and 1545 m of NQ2 diamond coring), were completed at the Dingo, Two Mile, Horseshoe and Emu Ridge prospects. 6 of the RC holes and 3 of the diamond cored holes are located within the relinquished portion of EL 5079 Mutooroo. The more significant assay results were returned from drillholes TMRC-01 and -02, however, there were anomalous intervals encountered by all of these drillholes.