Northern Star's KCGM Mill Upgrade to Increase Capacity and Gold Output in Western Australia
Northern Star Resources is conducting a A$1.5 billion expansion of its Kalgoorlie Consolidated Gold Mines (KCGM) operation in Western Australia, doubling the Fimiston mill's capacity from 13Mtpa to 27Mtpa. Approved in June 2023, the upgrade aims for gold production of 750,000-900,000 ounces by FY29. The project includes advanced automation and condition monitoring systems to improve efficiency and sustainability. Commissioning is scheduled for 2026, with full production gains expected from FY27.

Northern Star Resources is upgrading its KCGM operation in Kalgoorlie, Western Australia, with a A$1.5 billion expansion of the Fimiston mill, increasing capacity from 13Mtpa to 27Mtpa. This project, approved in June 2023, targets gold production of 750,000-800,000 ounces in FY27 and 850,000-900,000 ounces by FY29.
The upgrade includes advanced automation for improved recovery rates and reduced operating costs. The mill is set to be commissioned in 2026, with production gains expected to ramp up from FY27. The project has a post-tax internal rate of return of 19% at an assumed gold price of A$2,600 per ounce.




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