Figure 4.2: Embankment configuration of Stage 1
The proposed Stage 2 embankment layout is significantly higher than for Stage 1, with the tailings beach elevation positioned above the old spoil dump. In this scenario, displacement and mobilisation of tailings could be expected, with the conical failure surface base elevation forming over the crest of the spoil dump. The estimated cone footprint for Stage 2 is presented in Figure 4.3
Project No PS213278 Upper Mundic Gully TSF Stage 1 and 2 DBA and CCA Mount Morgan Gold Mine Heritage Minerals
WSP JUly 2025 Page 14
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