The results of a data review by MESA in 1992 to assess the prospectivity of the northern Flinders Ranges for concealed Triassic coal highlighted four main areas as having the best potential for a discovery. Following exploration for coal by MESA/ETSA in the Leigh Creek-Lyndhurst area (RB 95/28), attention was focussed on the alluvium-covered areas within the vicinity of the Springfield and Boolcunda Triassic coal basins near Hawker and Quorn. Gravity surveys totalling 697 stations over an area of approximately 420km² were undertaken, and used in combination with existing gravity information to define coal targets and a base/precious metal target in an area near Round Hill. A program of 23 reverse circulation exploratory holes totalling 1506 metres of drilling was completed to test these targets. No coal or carbonaceous sediments were intersected. The gravity lows drilled were interpreted as being due to Quaternary-Tertiary sediments within bedrock depressions, deeply weathered bedrock or variations in bedrock lithology. The Round Hill gravity/magnetic high was tested by two holes which both intersected weathered Adelaidean rocks at shallow depth. A total of 21 bedrock assay samples were submitted from 17 holes, and apart from one gold value which was above background levels (0.039ppm from 42-44m in hole RH2), no significantly anomalous results were detected. A total of 9 water samples were collected from mainly Tertiary sands, with salinities ranging from 1962 mg/l to 10490 mg/l, and flow rates from 0.2 to 1.4 l/s. A total of 38 sand-gravel bulk samples were collected from drillholes, with sample splits of these submitted for geochemical testing for diamond indicator elements. Of these, 4 intervals showed anomalous results. Bulks of these samples were submitted for indicator mineral identification with 3 possibly kimberlitic grains being identified in one sample (RB 95/31).