List of Figures
Figure 1. Site Locality............................................................................................................................ 16
Figure 2. Mining Leases ........................................................................................................................ 19
Figure 3. Underlying Lots within Mining Lease ..................................................................................... 24
Figure 4. Upper Mundic Gully TSF extent............................................................................................. 27
Figure 5. Sandstone Gully TSF Storage Capacity (Golder, 2020)........................................................ 29
Figure 6. Pipe Corridor Extent .............................................................................................................. 29
Figure 7. Extract from 2019 PoO (Source AARC, 2019) ...................................................................... 30
Figure 8. Extract from PoO 2017 (AARC) ............................................................................................. 31
Figure 9. Replacement Schedule I, Figure 1 in the EA......................................................................... 45
Figure 10. Areas Historically Disturbed by Mining ................................................................................ 54
Figure 11. Waste Rock Disposal in Upper Mundic Gully from West to East (photograph taken 1942) 67
Figure 12. Waste Rock Disposal in Upper Mundic Gully Plan View (photograph taken 1953) ............67
Figure 13. Western Dump within Upper Mundic Gully from the south looking north ............................ 68
Figure 14. Western Dump within Upper Mundic viewed from the base looking east ........................... 69
Figure 15. Waste Rock Disposal in Upper Mundic Gully (GHD)........................................................... 70
Figure 16. Mount Morgan Drainage Network Current........................................................................... 72
Figure 17. Mount Morgan Drainage Network Pre-Mining ..................................................................... 73
Figure 18. Sub Catchments occurring across Mount Morgan Mine...................................................... 74
Figure 19. Topography within Mount Morgan Mining Leases (QLD Globe) ......................................... 75
Figure 20. General Arrangement Plan .................................................................................................. 77
Figure 21. Plan and Longitudinal Section Stage 1................................................................................ 78
Figure 22. Plan and Longitudinal Section Stage 2................................................................................ 79
Figure 23. Typical Embankment Section .............................................................................................. 80
Figure 24. Upper Mundic Gully simulated forecast water levels for all phases .................................... 91
Figure 25. OCP simulated forecast water levels for all phases ............................................................ 91
Figure 26. Simulated mean forecast water balance ............................................................................. 93
Figure 27. Stage 1 Tailings Beach Surface .......................................................................................... 94
Figure 28. Stage 1 Stage-Storage Curve.............................................................................................. 95
Figure 29. Stage 2 Tailings Beach Surface .......................................................................................... 95
Figure 30. Stage 2 Stage-Storage Curve.............................................................................................. 96
Figure 31. Proposed Tunnel Portal Plug Design Section ..................................................................... 97
Figure 32. Overtopping and piping failure configurations (US Army Corps of engineers, 2014)..........98
Figure 33. Stage 1 Sunny Day Failure Maximum Depth (m) ................................................................ 99
Figure 34. Stage 2 Sunny Day Failure Maximum Depth (m) ................................................................ 99
Figure 35. Potential interaction of the Upper Mundic Gully TSF failure discharges with the proposed
Sandstone Gully TSF embankment .................................................................................................... 101
Figure 36. Process Plant Flow Diagram ............................................................................................. 102
Figure 37. Mean maximum and minimum temperature at Rockhampton Aero (BOM) ......................106
Figure 38. Rockhampton Aero Mean Rainfall (BOM) ......................................................................... 107
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Wulguru Technical Services Pty Ltd – Supporting Information Report
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