An area centred over the central Coober Pedy Ridge tectonic feature, 28 km east-southeast of Coober Pedy township, is being explored for possible economic buried massive haematite and magnetite within banded iron formation (BIF) type iron ore deposits, as well as for IOCG-U style sulphide mineralisation and accessory rare earth elements (REE), which could also be hosted by Proterozoic bedrock having a complex magnetic character. Previous exploration undertaken by CRA Exploration and BHP Minerals did not appear to have adequately tested the numerous magnetic and gravity targets evident in the area. Calc-silicate magnetite skarns, pegmatite and possible carbonatite occurring at Mount Brady are considered by current licensee Western Plains Gold Resources (WPG) to be indicative of the style of basement hydrothermal activity that is commonly associated with the formation of economic ore deposits. The known hydrothermal alteration in these rocks is reported to be associated with anomalous copper, phosphorous and REE. Furthermore, bedrock base metal anomalies outlined by BHP Minerals at the Dingo prospect were never drilled. During October 2010, WPG contracted Solo Geophysics to carry out detailed ground magnetic and gravity surveys along 21 traverses crossing over the largest geophysical features at the Mount Brady prospect that the earlier explorers had previously mapped. The new coverage comprised a total of 53.4 line km of ground magnetic profiles with station intervals of 5 m and 10 m, and 34.8 line km of gravity profiles with stations read at 50 m intervals. Wet weather delayed the completion of these surveys until March 2011. Following OneSteel's purchase of Southern Iron in 2011, the new licence owner reviewed the planned exploration programme and decided to retain the proposed scout aircore drilling in the south-east of the tenement, but with a reduced number of holes, 39 instead of 73, to be drilled in the first pass campaign. It was envisaged that success in this campaign would lead to extended bedrock sampling on a regular grid spacing, to define geochemical targets for follow-up RC and core drilling. During the 2012-2013 reporting year, OneSteel (now trading as Arrium Mining) acquired part of a multi-licence airborne magnetic and radiometric survey during the period January-March 2013, and commenced geophysical data interpretation. Detailed coverage of 3463.1 line km was flown over Mount Brady at 100 m north-south x 1000 m east-west grid line spacing, using a 30 m nominal sensor height above the ground surface. The resultant data were sent to Southern Geoscience Consultants to process and enhance for visualisation purposes. The design of the proposed first-pass reconnaissance aircore drilling campaign would be reviewed following receipt of the processed geophysical imagery. During the 2013-2014 reporting year, no field work was done. Southern Iron undertook a re-interpretation of the merged 2010 and older gravity data, combined with an interpretation of the 2013 airborne geophysical survey data. Aerial photographic coverage of the tenement was purchased to ortho-rectify for GIS use. During the 2014-2015 reporting year, no field work was done. In October 2014, Southern Iron applied to DSD for a subsequent renewal of the subject EL 4422. DSD granted renewal of the tenement as EL 5566 for a period of two years from 25/1/2015 [Note: the annual reports for this licence, which is being jointly reported with Southern Iron's EL 5567, are held separately in Env 12879].