Mount Morgan Mine Upper Mundic Gully TSF EA Amendment

An overview of the site layout is presented in Figure 1.1.

Figure1.1

Mt Morgan mine site key features

1.3 TSF Characteristics

A summary of the proposed Upper Mundic Gully TSFStage 1 and Stage 2 characteristics are presented in Table 1.1.

Table1.1

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

2.5

2.5

1V:zH

(1) Retrieved from deposition design models.

Project No PS213278 Upper Mundic Gully TSF Stage 1 and 2 DBA and CCA Mount Morgan Gold Mine Heritage Minerals

WSP May 2026 Page 2

Powered by