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Gruyere ramp-up continues - Engineering News

Thursday, 15 August 2019

PERTH (miningweekly.com) – Joint venture (JV) partners Gold Fields and Gold Road Resources are progressing with the ramp-up of the Gruyere mill, in Western Australia, with the circuit achieving 96 hours of continuous operation.

The two companies on Thursday said that a total of 73 590 t of ore were processed at an average recovery of 94.8% and an average grade of 1.17 g/t gold over this period, with the throughput rate managed at an average of 725 t/h.

Since the start of mining, until the end of July, some 3.4-million tonnes of ore has been mined, grading 0.83 g/t gold for 90 700 contained ounces. Of the 3.4-million tonnes mined, 1.7-million tonnes was run-of-mine ore and 1.7-million tonnes was low-grade ore.

For 2019, the JV has set a production target of between 75 000 oz and 100 000 oz for Gruyere. Commercial production is anticipated mid-way through the six- to seven-month ramp-up period. 


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