The Geological Survey of South Australia, in partnership with Geoscience Australia, is undertaking a regional pre-competitive geoscience research drilling program in the far west of South Australia called the Coompana Drilling Project. The Coompana Province, located between the western Gawler Craton to the east, the Musgrave Province to the north and the Madura Province to the west, is one of the least understood and explored geological provinces remaining on the Australian continent. Bedrock in the region is completely covered by Neoproterozoic to Cenozoic sediments, and there are no known basement exposures. Up to 18 new drillholes were planned as part of this project to intersect as many of the different geophysical domains as possible, as delineated from the recently acquired Coompana airborne magnetic/radiometric survey and the Coompana regional gravity survey. The primary objective of the Coompana Drilling Project is to obtain high quality drill core samples from the untested basement units beneath the Nullarbor Plain. The outcome of the Coompana Drilling Project will be to provide our stakeholders with new pre-competitive data and a geological framework that more clearly defines the geology and prospectivity in this region. This report provides the first release of the preliminary data collected on-site during the drilling of drillhole CDP006. This compilation includes well completion information, location and site access data, results of pre-drilling cover geophysics and depth estimates as well as the field geological logs and acquired down-hole geophysical data. CDP006 targeted a geophysical zone that is characterised by a well developed east-northeast - striking grain. This zone can be traced to the south, where it appears to grade into interpreted foliated crust. Just to the north is a large elongate (~75 km long by 20 km wide) magnetic pluton that is aligned parallel to the Hughes Domain and the east-northeast striking grain. It was expected that CDP006 would penetrate the basement rocks that host such magnetic plutons, probably belonging to the c. 1610 Ma Toolgana Supersuite. The Palinar Shear Zone, which forms the south-eastern boundary of the Hughes Domain, will be present in the southern part of the target area and may have produced the strong foliation. Consequently, it was thought possible that these rocks would also have a c. 1200-1120 Ma metamorphic overprint.