The updated resource estimate for Tumas Zone 1 and 2 is 14.
The updated resource estimate includes a 57% increase in total pounds U3O8 and a 6% increase in grade over the previous Tumas resource estimate.
Tumas Zone 3 drill data was also evaluated by H&S.
The updated Tumas Mineral Resource estimate increases the total Tubas-Tumas Palaeochannel high-grade subset resource estimate to 37.
The combined Tumas Zones have been sampled by 5,956 reverse circulation (RC) holes drilled by RUN between 2008 and 2010 for a total of 112,281 metres of drilling.
The Tumas Zone 3 drilling is much broader, and less regularly spaced than the other Zones, with drilling including 50 metre spaced holes along sets of east-west and north-south traverses separated by 600 to 2,000 metres, and some locally tight-spaced infill drilling.
Tumas mineralisation occurs as secondary carnotite enrichment of variably calcretised palaeochannel and sheetwash sediments and adjacent weathered bedrock.
Data available for the Tumas drilling includes in-rod and open-hole gamma logging, XRF assay results and scintillometer measurements from samples placed in lead shielded box.