Figure 1.1
Mt Morgan mine site key features
1.3
TSF characteristics
A summary of the proposed Upper Mundic Gully TSF Stage 1 and Stage 2 characteristics are presented in Table 1.1.
Table 1.1
Summary of the proposed TSF characteristics
Item (1)
Stage 1
Stage 2
Unit
Total volume of tailings deposit
1.15
9.24
Mm³
Total tonnage of tailings deposit
1.26
10.16
Mt
Minimum crest elevation
360
390
RL m
Crest width
10
10
m
Upstream embankment slope
2.5
2.5
1V:zH
Downstream embankment slope
1V:zH
2.5
2.5
(1)
Retrieved from deposition design models
1.4
Receiving environment
Mt Morgan Gold Mine is located in the western floodplain of Dee River, which conveys runoff from a catchment of approximately 20 km 2 upstream to the mine site. The OCP spillway discharges into this watercourse, which meanders
Project No PS213278 Upper Mundic Gully TSF Stage 1 and 2 DBA and CCA Mount Morgan Gold Mine Heritage Minerals
WSP JUly 2025 Page 2
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