Exploration activity for uranium in the Paterson region has increased significantly since the state government overturned the ban on the development of uranium deposits in November 2008. Canadian based Cameco Corporation, in 70:30 joint venture with Mitsubishi Development Pty Ltd, purchased the Kintyre uranium project from Rio Tinto in August 2008 for US$346.5 million and commenced extensive drilling programs at the project and surrounding exploration tenements.

The Kintyre vein and hydrothermal uranium mineralisation is associated with lead, copper, bismuth and gold within the Yandagooge Formation of the Talbot Terrane. The distribution of mineralisation is controlled by faulting and the unconformity with overlying Yeneena Basin sedimentary rocks.

A uranium-prospective corridor defined by a series of uranium-gold-base metal occurrences within the Yandagooge Formation extends onto De Grey's tenement south of the Rudall River national park, where it continues beneath sand cover for a strike length of 8km. In an analogous geological setting to that at Kintyre, the magnetic Yandagooge Formation is cut by low angle faulting. Prospectivity is further enhanced by high tenor lead-copper-bismuth-uranium anomalism reported by previous explorers, representing an exciting uranium exploration opportunity for De Grey.

Uranium exploration targets in the Paterson Project