As part of a continued search for possible Proterozoic - Cainozoic unconformity - related, concealed sedimentary uranium deposits in an area of the Eucla Basin located 60 km north of Fowlers Bay, Pechiney conducted geological reconnaissance, ground radioactivity measurements, shallow auger drilling of dry lakebed sediments, soil, rock chip and groundwater geochemical analyses, radiation track etch surveys, and stratigraphic/exploratory rotary mud drilling (18 holes totalling 827 m) in the vicinity of selected airborne survey radiometric anomalies. Discrete radiometric anomalies to 14,000 counts per second, on a background of 30-100 cps, were found in some small areas near the southern shores of Lake Kroonilla West. They appeared to be related to salt deposits on the lakebed surface and are associated with groundwater springs that disrupt the generally impervious clay horizons. Radium or radon in the groundwater, and concentrating of uranium daughter products into the evaporite deposits, are interpreted to be the cause of the isolated anomalies. Neither the more wide-ranging rotary mud drilling nor the track etch surveys gave any encouraging results. Some new information on the stratigraphy of the licence area was obtained, but the sought-for structural data was inconclusive. Sporadic weak gamma ray radioactivity recorded on downhole logs appears to be related to thin lignitic intervals within the Tertiary sequence.