The Mt Magnet production centre includes the multi pit / underground projects of the Mt Magnet Gold Mine along with high grade underground ore which is hauled from the Vivien and Penny Gold Mines (with commercial production from Penny expected for the 2023 financial year onwards).
Eridanus, Morning Star and most Mt Magnet deposits, Rebecca, Tampia, Symes & Marda are modelled as open pit deposits. Factors include potential pit depths, minimum mineralisation widths and economic cutoffs based on current contract mining equipment and milling facilities. UG deposits, including Galaxy, Hill 60, Shannon, Vivien, Edna May lodes and Penny are modelled with consideration of extraction by conventional sub-level open stoping methods. Edna May, Galaxy and Eridanus models are generated as bulked low grade models for open pit evaluation and bulked underground mining scenarios.
MINING – MT MAGNET GOLD MINE
Operations at the Mt Magnet Gold Mine focussed on one open pit (Eridanus) and two underground mines (Shannon and Hill 60) during the year. A summary of the mine operations for the year is provided below:
Eridanus Open pit
The large Eridanus open pit was the main source of ore feed for the Mt Magnet production centre for the year making up 45% of the mill feed.
Eridanus was the sole open pit mine at Mt Magnet during the year with a total of 1,596kt of ore being mined at a grade of 1.10g/t for contained gold of 56,472 ounces.
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