MAC Copper and its 100% interest in its sole asset, the CSA copper mine, was acquired effective 24 October 2025. CSA is a high-grade, long-life, mechanised copper mine in a Tier 1 jurisdiction. The Merrin mine, located in the upper part of the CSA mine, is currently being developed and will contribute both copper and zinc production.
Key facts
Location:
Australia
in New South Wales, some 700km west-northwest of Sydney
Nature of mining
Underground
conventional open-pit techniques using mining bench configuration
mining depth
1.9km
Life-of-mine
+12 years
Contact
Tel: +61 2 6836 5100
Address:
Via Louth Road, Cobar, New South Wales 2835, Australia
Current focus
- Incorporate CSA into Harmony
- Harmony FY27 planning parameters will be integrated into CSA life of mine plan
- Continue development of Merrin mine
Key metrics
Capital investment
US$1.2bn
Bridge funding utilised
US$875m
High Reserve grade
3.4%Cu
All in sustaining costs
> US$2.92/lb
C1 cash costs
> US$1.67/lb
Workforce
~500
Guidance 2026
Production
40kt
of copper
Capital expenditure
~R3 437m
Reserves and resources
Gold and gold equivalent Mineral Reserves
2.8Moz
Gold and gold equivalent Resources (inclusive)
2.5Moz
Copper Mineral Reserves
2.3Mt
Copper Mineral Resources (inclusive)
4.3Mt
