Quarterly Activities Report - 1 July to 30 September 2011 - Discovery ...

Liebherr 9350 loading a Caterpillar 777D 100 tonne truck.
3. Zeta Underground Definitive Feasibility Study (DFS)
The DFS for underground mining of the Zeta Mineral Resource is on track and scheduled for completion in
late 2011 with the results expected to be released to the ASX in early 2012. Independent consultant Mining
Plus Pty Ltd (Mining Plus) is assisting with the completion of the DFS.
Snowden Mining Industry Consultants (Snowden) completed an upgrade of the Mineral Resources for the
Zeta Deposit incorporating 54 new infill holes drilled earlier this year. The Mineral Resources at Zeta
increased by 9 million tonnes (25%) to 44.1 million tonnes and this resource model will form the basis of the
Zeta underground DFS. Please refer to the updated Mineral Resource and Ore Reserves statement on the
second last page of this report.
During the quarter, Mining Plus evaluated several mine access options and geotechnical work progressed
with recommendations made for a ground support regime for haulage development and production areas. A
stope design exercise commenced together with mine sequencing and production scheduling. A
metallurgical test work programme on samples of Zeta underground material confirmed the similarity of the
Zeta underground ore with Zeta open pit material.
Page 7 of 18