Aquitaine Australia Minerals Pty Ltd (Aquitaine) entered into a joint venture with North Flinders Mines on 21 August 1975, over an area defined by Exploration Licence 272 (ex EL 153). The area included two main prospective zones for copper deposits: the Callanna Beds depositional sequence (Callana - Yudnamutana zone) in the south-western part of the area, and the Gunsight - Parabarana trend (Paralana Fault zone) in the north-eastern part of the licence area. To the south of the former area, Aquitaine had extensively explored in the Needles area, and Utah Development had located significant sub-economic mineralisation related to stratiform mineralisation in the Wywyana Formation. In addition, North Flinders Mines in conjunction with Dampier Mining Company (BHP), the South Australian Department of Mines, and other previous exploration companies had concurrently carried out extensive programs in the Gunsight - Parabarana area and environs. Within EL 272 Aquitaine completed a 2 year exploration program, exercising a mainly geophysical approach to further investigate the two zones of interest. A Turair (airborne EM) survey was flown in the Callanna - Yudnamutana area, and across the southern part of the Gunsight - Parabarana trend south of Gunsight, in 1976. Resulting anomalies were investigated by geological assessment and ground EM. The Gunsight - Parabarana area was flown by INPUT (airborne EM) during early 1977. An interpretation and assessment of this data is enclosed in this report. By comparison with the INPUT responses over the Gunsight and Parabarana prospects, other anomalies from the survey were not considered worthy of follow-up. Whilst recognising the potential of the area for small rich Cu deposits, Aquitaine wanted to maintain the goal of finding large cumulative tonnage due to the EL's relative remoteness and lack of existing infrastructure. However, exploration outcomes to the date of this report had not provided bodies greater than one to two million tons at grades of 1.5-2.0% copper. As its regional airborne electromagnetic prospecting had not been successful in increasing the economic potential of the areas held under joint venture, Aquitaine could not justify further participation in exploration of EL 272.