An area centred ~40 km north-west of Coober Pedy, and lying in the northern part of the Gawler Craton near the centre of the Mabel Creek Ridge crustal element and to the north of the east-trending Karari Fault Zone, has been explored for possible buried economic epithermal/hydrothermal IOCG mineralisation that may have formed in Proterozoic basement rocks. Following the conduct of three-dimensional inversion modelling of available regional geophysical data, part of a multi-licence detailed airborne magnetic and radiometric survey was flown over all of EL 4542 for Teck by contractor Aeroquest Airborne during May-June 2011, with a north-south line spacing of 200 m. A total of **** line km was flown. The resulting data provided improved resolution of small scale magnetic features and structural trends. Several discordant magnetic features were noted for further evaluation, since they might represent structurally-controlled hydrothermal magnetite (± sulfide) deposits. Within the top half of EL 4542, along the topographic high associated with the Stuart Range, radiometric data showed that thorium is the dominant radioactive mineral. Teck thought that this is probably due to it being retained in iron oxides in ferruginous silcretes, while more mobile uranium and potassium have been leached out. During June-July 2011, with the assistance of PACE Targeting subsidy funding, Teck acquired three small ground gravity surveys on selected parts of EL 4542 to infill existing publicly available gravity data. A total of 124 new stations were acquired at a variety of grid spacings including 1 km x 1 km, 1 km x 500 m and 1 km x 250 m. This work defined three weak 1-3 mGal residual high gravity anomalies lying within the licence area. Later in 2011, 7 selected samples of stored diamond drill cores, from three holes completed by Marathon Resources in its 2006 exploratory drilling done on EL 3455, were examined microscopically in thin section by a petrographic consultant. The brief was to interpret their basement rock metamorphic history and to describe mineral alteration assemblages, looking for any significant alteration to albite, K-feldspar, scapolite, hematite or magnetite which would be of particular interest in relation to IOCG prospectivity. During licence Year 2, the reported results of historical drilling done in the general project area were collated and summarised. This highlighted an opportunity for making further geochronological studies of syn to post-orogenic granitic rock phases occurring within basement in the area that may form part of the ~1585 Ma Hiltaba Suite, which is spatially associated with known IOCG mineralisation elsewhere in the eastern Gawler Craton. Such work addressing the tectonic and thermal histories of the Coober Pedy and Mabel Creek Domains and the timing of past events there relative to the regional emplacement of Hiltaba age rocks, Teck hoped could help it to answer key questions about whether or not deeper-level magnetite-dominated IOCG systems might be preserved in parts of these two domains, and if there are any high-level remnants of the Gawler Range Volcanics present that could host more haematite-dominated mineralisation, akin to that at Prominent Hill. Several third parties were provided with confidential data packages after expressing interest in entering into a farm-in agreement on some of the Coober Pedy Project licences. Evaluations are ongoing, and no formal deal has as yet been agreed. Two licences, ELs 4543 and 4722, were surrendered during the year after it was decided that ongoing Native title on-ground access exclusions would prevent any future work being done on them. No further work was attempted on the subject EL 4542 during licence Years 3 through 6. After Teck did an internal review and re-prioritisation of its projects, a decision was made to fully surrender the licence.