annual report 2009, page-2

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(iii) Agitated Leach
Testing of standard whole-of-ore agitated
tank leaching was completed in 2008.
Beneficiation testwork, including gravity
separation and flotation, to evaluate the
viability of generating a high-grade
uranium concentrate commenced earlier
this year at a range of fine grind sizes.
As highlighted previously, recently
returned positive preliminary flotation
test results have the potential to impact
materially on the choice of processing
flowsheet. If concentration by way of
flotation methods is confirmed to be
technically and commercially viable, an
agitated tank leach process flowsheet
incorporating a flotation circuit could be
expected to deliver a low mass pull
concentrate, which would potentially
give rise to lower operating risks
and costs. Operating costs would
be lower, as leaching of a high-grade
float concentrate would consume
significantly less sulphuric acid, the
cost of which accounts for a significant
proportion of the total processing cost.
Also, the logistics of transporting acid
into the operation would be simplified.


Cheers, Skip