SML 113 covering about 1000 square km of Upper Proterozoic and Lower Cambrian sediments, and scattered masses of intrusive diapir, was taken out in the vicinity of Beltana to explore for copper deposits analogous to those found by SA Department of Mines geologists early in 1966 within a block of Tindelpina Shale in the Mount Lyndhurst Diapir, some 24 miles to the north. Surface samples taken from the latter rock unit were reported to have assayed up to 5% Cu. Anaconda have since studied their Beltana area in a similar manner by a combination of photogeology and field mapping, and have undertaken a programme of regional geochemical stream sediment sampling to cover all outcrops of potential ore-bearing horizons and diapiric rock. Rock chip samples have also been collected from selected sedimentary horizons and from limonitic exposures. Stratabound copper in SML 113 occurs persistently in green shale and dolomite bands in a predominantly purple-weathering shale of the Bunyeroo Formation, but the grade is too low and the copper-bearing horizon too thin to be an economic proposition. Likewise, small concentrations of copper are scattered through the largest exposure of diapir which extends discontinuously from Beltana railway station north-east to the site of the old Ajax mines, but again they are mostly of very limited extent. A typical analysis of samples taken from an unusually large block of pyritic dolomite near the Mount Bayley mine indicates a grade of less than 0.1% Cu. No other occurrences of copper-bearing rock were found in the Beltana Diapir exposures, and the results of regional geochemical sampling outside the diapir failed to reveal evidence of extensive mineralisation. Outcrops containing up to 52% zinc as the hydrous silicate hemimorphite and up to 14% lead in secondary ore minerals were discovered east of Puttapa railway station in a highly faulted area where Lower Cambrian Ajax Limestone is closely associated with areas of diapir. Chip samples of a red, dolomitic and manganiferous limestone bed with which it is associated give consistently high zinc values, varying generally from over 1000 ppm to greater than 0.5% Zn, and averaging 2500 ppm a quarter of a mile away from the deposit. It is intended that an area of 13.6 miles be retained for detailed mapping and sampling, and that shallow grid-based drilling be conducted to determine the extent, depth and grade of mineralisation.