EL 25581 East Rover partial relinquishment report for the period 12 May 2009 to 11 May 2011

Abstract

The relinquished portion of the lease has been selected based on the interpreted thickness of Wiso Basin sediments, making exploration for Tennant Creek or Rover-style deposits difficult and expensive. While the relinquished ground may still be prospective for such deposits at depth, WDR considered that its efforts were better spent in the retained area of the lease. The phosphate potential of the relinquished area within carbonate sequences above the Warramunga Formation has not been assessed. The only work undertaken on the relinquished area was part of a regional aerial EM survey carried out in May 2011 (57 line km on the relinquished area). Preliminary data suggested that there were no significant conductors detected on the relinquished area. This, in combination with interpreted depth of cover of the Wiso Basin sediments, was used to determine the area to be relinquished.