EL 24246 Napperby, Partial relinquishment report, 11 October 2004 to 10 October 2012

Abstract

During the reporting period DYL and Toro performed reviews of the available historical and regional data. In 2007 Toro commissioned Fugro Airborne Services (Fugro) to undertake an airborne electromagnetic (AEM) survey. In 2011 DYL commissioned Fugro to undertake a second AEM survey designed to delineate subsurface palaeochannels around the periphery of Lake Lewis with the potential to host both calcrete and roll-front style uranium deposits. The areas selected for surrender were chosen on the basis of the failure to identify, through analysis of regional and historical data in conjunction with AEM survey data, any palaeochannels or drainages that could potentially host calcrete or deeper roll-front style uranium mineralisation.