Option
Advantages
Disadvantages
will result in a longer timeframe to remove latent tailings which does not align with the mine plan to have a TSF ready to store material from Year 3 of processing The maximum volume of tailings authorised for discharge into Sandstone Gully TSF is 11Mm 3 and this volume has been accounted for in the mine plan The proposed tailings discharge volume into Upper Mundic Gully TSF is 9.24Mm 3 which could not be contained within Sandstone Gully TSF Although the Sandstone Gully TSF was designed for a maximum of 6 Stages, the EA limits the maximum height to Stage 4. Constructing higher stages results in the embankment potentially overlying the Mundic Gully failure point which can not be remediated until latent tailings are removed from this mine feature Requires an amendment to the EA Further deposition of processed tailings into the OCP is not viable as the current EA condition limits discharge to 3 years Requires an amendment to the EA Regulations would not permit the storage of tailings in a storage tank Risks associated with overtopping events if tailings volumes are greater than forecasted Not a permanent solution to tailings management
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Discharge additional processed tailings into the OCP
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Permanently stores processed tailings
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Store produced tailings in storage tanks
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Temporarily stores processed tailings
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Project number: 25B061
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