As part of a regional search for economic uranium and copper mineralisation, the US-based company Kennecott Copper in November 1968 performed a semi-detailed airborne spectrometer survey of 550 line miles in the Shamrock Valley - Freeling Heights - Mount Adams area, recording total count and U/Th/K radioactivity readings along 89 north-south flight lines spaced 1/10 mile apart, with flight elevations varying from 500 to 2000 feet, depending on the underlying, often extremely rugged topography. This work was prompted by the Oilmin NL consortium's recent discovery of significant amounts of uranium mineralisation nearby at the Mount Painter and Radium Ridge prospects. The initial radiometrics delineated three major anomalies within SML 199, all apparently related to the margins of the Ordovician 'Younger Granite' batholith. These anomalies were investigated by ground scintillometry and geological appraisal, after a more detailed follow-up low level (approximately 100 foot flight elevation) airborne radiometric survey was flown in February 1969 to confirm and better define them. The Northern anomaly, with a total radiation count averaging 2000 counts per minute from an elongated zone 4000 feet long by 1000 feet wide within the granite, yielded spot sample assays of up to 0.65 lbs U3O8 per ton, with associated thorium concentrations of up to 400 ppm, although the expected average uranium oxide grade was closer to 0.15 lbs per ton. The less intense, Eastern anomalous trend, which also lies within the granite body near its eastern margin, was outlined by the low level spectrometry as covering a zone about 8000 feet long by 1500 feet wide, that has twice background radiation levels. Here surface chip sampling returned values averaging 0.12-0.15 lbs U3O8 per ton, as measured over sampling sections 1200 feet long, with the highest Th assay being 100 ppm. The third radiation anomaly, seen in the south-eastern part of the licence area, occupies the northern slope of a high ridge located 1000 feet south of the (abandoned) British Empire copper mine. Here mineralised granite having radioactivity ten times background can be traced over a zone 1000 feet long by 600 feet wide. A random sample of the granite assayed 0.2 lbs U3O8 per ton. A sample of the granite taken previously by SA Department of Mines geologists from the adit face of the British Empire mine was reported to contain 0.56% Cu, 2000 ppm Pb, 120 ppm Zn and 15 ppm Ag, but negligible Au. Precambrian country rock schists bordering the granite along a major fault line to the south and east are brecciated and altered and contain visible secondary Cu-U mineralisation (malachite, torbenite) in shear veins which are partly weathered and leached. Kennecott conducted detailed chip sampling of this brecciated quartzitic country rock, taking large samples of fresh rock at 25 foot intervals along parallel sample traverses spaced nominally 100 feet apart. The results of this work showed that the uranium occurs associated with anomalous lead, copper and molybdenum values, principally in pegmatitic fractures carrying a large proportion of haematite and barite. 5 samples were described petrologically to aid with interpretation of possible mineral genesis. A programme of stream sediment sampling was also undertaken over the remainder of the margins of the granite body to check for any uranium occurrences which might not have given a clear radiometric expression in the aerial survey results. 83 samples were analysed, but they did not disclose any such occurrences. The completed surface sampling of the above described uranium occurrences has indicated that large tonnages of very low grade uranium and thorium mineralisation are likely to be present in them. Exploratory drilling of the depth extent of these occurrences is planned to follow shortly.