PERTH, WESTERN AUSTRALIA--(Marketwire - Dec. 7, 2012) -
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Gold miner, Lachlan Star Limited ("Lachlan" or the "Company) (TSX:LSA)(ASX:LSA) is pleased to announce that based on the final ROM trial results it will be adopting a recovery of 45% for the ROM material. This is in line with previous guidance.
The second 2 Stage Crush trial is ongoing and will be finalised in early 2013.
The recoveries achieved for ROM, 2 Stage Crushing and 3 Stage Crushing process routes are shown in Figure 1, with an accuracy of +-2%. As expected, leach kinetics are in general faster with the higher level of crushing. The final 3 Stage Crush recovery is based on the use of a dynamic pad, whilst the ROM and 2 Stage crushing trials have used a static pad.
Results have been based on 7,500 tonne trial parcels of lower grade (0.25 g/t Au to 0.30 g/t Au) mineralisation from the Toro and Tres Perlas deposits and are considered indicative of what will be achieved in the operations. Cyanide consumption for the ROM material is lower than the 3 Stage Crushed material at 0.45 kg/t compared to 0.60kg/t respectively.
A full copy of the announcement is available on the Company's website www.lachlanstar.com.au or at the link below: http://www.lachlanstar.com.au/images/121207_LSACMDROMTrialFinalResults2.pdf