Following the acquisition of EL 1394 by Moonta Mining NL from Western Mining Corporation in March 1988, all data which had been generated until that date were released in September 1988 as part of the Moonta-Wallaroo Exploration Data Package (Env 8368). The current, latest data release describes the result of exploration done from that time until the expiry of EL 1753 on 26 November 1996. Exploration by the Moonta Mining Joint Venture from 1988 to 1993 concentrated mainly on the Wheal Hughes prospect, identified by WMC as a potential resource of some 90,000 tonnes grading 2.5% Cu and 0.69 g/t Au, lying between 22 and 74 m depth subsurface. Reverse circulation percussion drilling on a 19 m by 15 m grid (>58 holes, >2870 m total) upgraded the ore reserves to an indicated 177,800 tonnes @ 2.2% Cu, and resulted in a campaign of open pit mining being conducted from 23/10/1990 to 26/2/1992, while follow-up appraisal drilling (66 holes, 5397 m) preceded decline development from the pit floor after 17/7/1992 and the transition to underground mining at a rate of approximately 12,000 tonnes/month from September 1993 until April 1994. Meanwhile, drilling undertaken at the West Doora, Poona and Paramatta prospects (23 holes, 1232 m) failed to locate significant mineralisation. Attention then turned to the Alford area, where previous auger geochemical sampling work by WMC had indicated anomalous supergene Cu/Mo values. In association with SADME, a single array RRMIP survey was undertaken, resulting in the detection of a strong conductor. Reverse circulation drilling (12 holes, 1204 m) returned several significant intersections, including 6 m from 64 m at 3.69% Cu and 0.77 g/t Au. Four holes of this programme were also completed at Wheal Hughes for 470 m, in an unsuccessful attempt to find structurally offset extensions to the worked-out lode. At the same time, a soil gas study undertaken by SADME at several widely spaced sites recorded elevated CO2, which was attributed to calcrete rather than base metal sulphides. Under joint venture with MIM Exploration, drilling was continued in the Alford area, with the completion of seven diamond holes for 1748.4 m total, and 32 reverse circulation holes for 1402 m. Narrow, low grade mineralisation was intersected in several holes. Down-hole EM surveying and surface IP and EM surveys did not indicate significant mineralisation. Digitisation and re-evaluation of resistivity and chargeability data resulted in the recognition of new targets, which were deemed to require further investigation. Exploration continues under EL 2885.