According to foreign media reports, PT Freeport Indonesia is continuing development of the Kucing Liar underground copper-gold mine within the Grasberg minerals district in Central Papua, with initial mining targeted for 2029 and production expected to ramp up thereafter. The project is being developed as a long-term source of replacement supply as production from the Deep Mill Level Zone declines.
Development of the underground deposit has been underway for several years and requires substantial investment in mine access and supporting underground infrastructure. Recent reports indicate that approximately $1.4 billion has already been invested, with a further roughly $4 billion expected through 2033 as development progresses.
At full operating rates, Kucing Liar is expected to process approximately 130,000 tonnes of ore per day and produce around 750 million lb of copper annually, equivalent to roughly 340,000 tonnes, alongside approximately 735,000 oz of gold. Freeport-McMoRan currently estimates that the deposit could contribute more than 8 billion lb of copper through 2041.
From a copper-market perspective, Kucing Liar represents a significant source of prospective long-term mine supply from the Grasberg district. Its development is particularly important because it is intended to help offset declining output from mature underground areas and sustain Freeport Indonesia's large-scale copper production over the longer term.
