Company exploration within the CURNAMONA 1:250 000 sheet area was reviewed by the study of data incorporated in the open file reports on 42 Special Mining Leases, 80 Exploration Licences and one group of Mining Leases dating from 1961. This data package, complemented by Report Book 92/34 on the adjacent OLARY sheet area, completes a project commenced in 1991 to review all company exploration in the Willyama Block and its environs. The southern third of CURNAMONA contains outcropping zones of Palaeoproterozoic Willyama Supergroup rocks. The northern sector of the sheet area has a multiply deformed Willyama basement overlain by varying combinations and thicknesses of relatively undeformed Mesoproterozoic volcanics and Neoproterozoic (Adelaidean) platform sediments, together with Cambrian, Mesozoic and Tertiary sedimentary sequences. Several cored holes up to a maximum 802 metres have been drilled to basement in this area. At least 95% of the projected Willyama is covered by varying thicknesses of younger sediments, and the application of detailed airborne magnetics and less expensive drilling methods will be necessary to explore beneath this cover. Only very minor production of copper, cobalt and industrial minerals is recorded from the area. The data generated from company and government (MESA) activities includes geological mapping currently being collated at a 1:25 000 scale, and a complete coverage of airborne magnetic data mostly at a line spacing of 500 metres or less. By most standards CURNAMONA is underdrilled. Only 43 diamond core holes totalling 13 586 metres were drilled to test Proterozoic base metals and uranium targets, while in the northern sector, only 11 significant cored holes have tested the covered basement. An additional 234 percussion holes totalling 20 534 metres were drilled, largely in the Kalabity area. The vast majority of drilling (86%) has been of the rotary type to explore for roll front uranium targets in lower Tertiary palaeochannels. A total of over 200 000 metres is recorded in more than 1 900 holes. The data review has highlighted some exploration models which are deserving of further attention. These include: stratiform lead-zinc-silver; ironstone-hosted and stratiform copper-gold; breccia-hosted copper-gold-uranium; Willyama-hosted uranium; and sedimentary roll front uranium.