Portions of two of three separate sub-blocks formerly comprising EL 5426, totalling 34 square km in area or ~25% of the licence's former extent, have been relinquished because of their now perceived diminished prospectivity for finding significant occurrences of uranium mineralisation. Joint venture partner Samphire Uranium Ltd (subsidiary of UraniumSA) has lately experienced success from exploring the Cowell Project licences for roll-front style uranium, by making ore-grade discoveries at Blackbush, Samphire and Plumbush along the “Mullaquana” trend in the Pirie Basin. This mineralised trend consists of buried Cainozoic host sediments overlying the Precambrian basement, and it is best expressed in their EL 4979 Mullaquana which abuts the northern boundary of the eastern sub-block of the subject EL 5426. Previously, USA reconnaissance drilling undertaken on EL 5426 (then prior EL 4242) has confirmed that anomalous uranium mineralisation extends through the licence [see Env 11601]. All three sub-blocks appear to be prospective for primary uranium mineralisation which has been emplaced in faults and shear zones in the Palaeoproterozoic basement and in radiogenic Hiltaba Suite granites. The now relinquished portion of the western sub-block was drilled historically in 1979 for uranium by CRA, while the now relinquished portion of the central sub-block historically has had only one hole drilled in 1996 by BHP Steel, looking for iron ore. Under the subject tenure, no work was done by Stellar within these relinquished areas, while the only work done by USA was the acquisition during January 2010 of part of a helicopter-borne EM (REPTEM) survey which was flown over a zone within Pirie Basin Tertiary sediments that was considered prospective for sedimentary uranium deposits, besides heading inland over Mesoproterozoic Hiltaba Suite granite terrane. The flight line spacing was 1-2 km and the sensor elevation above ground surface was 40 m. The western ends of five east-west flight lines covered the now relinquished western sub-block (for ~5 line km of AEM data - released herein).