Figure 1.1
Mount Morgan Mine site key features
1.3 STSF characteristics
A summary of the proposed Sandstone Gully TSF Stage 1, Stage 3 and Stage 5 characteristics are presented in Table 1.1.
Table 1.1
Summary of the proposed STSF characteristics
Item (1)
Units
Stage 1
Stage 3
Stage 5
Total mass of tailings deposit
(Mt)
3.9
10.0
20.9
(Mm 3 )
Total volume of tailings deposit
3.0
7.7
16.1
Minimum crest elevation
(RL m)
297.0
313.0
330.0
Crest width
(m)
10
10
10
Embankment height
(m)
59.9
76.9
83.8
Upstream embankment slope
(1V:zH)
2.0
2.0
2.0
Downstream embankment slope (1V:zH)
2.5
2.5
2.5
(1) Retrieved from DFS design model
Project No PS213278 Sandstone Gully TSF Dam Break and Consequence Category Assessments Mount Morgan Gold Mine Heritage Minerals
WSP January 2025 Page 2
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