zones (e.g. porphyry copper and shear zone hosted gold); identify uranium mineralisation; and prioritise and discriminate Fe-oxide-Cu-Au, granophile deposits and mafic targets.

As part of the XPlorer™ package, NRG offers high resolution, full-spectrum radiometric data as a complement to its industry-leading gradient enhanced magnetic data. The reduced survey height offered by a helicopter platform significantly improves signal to noise ratio which in turn enables a higher sampling rate of 2 Hz. This, coupled with slower survey speed, results in a down-line sample window of approximately 25 m which is a three-fold improvement on standard fixed-wing systems. A full 1024 in3 NaI crystal pack is employed with 256 channel recording. Full spectral processing (NASVD or MNF) is applied to all data as a standard. Most of the XPlorer™ systems are now running new generation Radiation Solutions spectrometers in place of older GR820s which have a number of technical advantages (follow the link for RSI technical details: http://www.radiationsolutions.ca/products/RS500.htm).