Evolution Mining has committed to an A$250 million ($168 million) investment for a process plant expansion for its Mungari gold mine in Western Australia. The expansion will increase throughput from 2 million metric tons per year (mt/y) to 4.2 million mt/y, and extend Mungari’s mine life by 15 years to 2038. The company expects the investment to reduce all-in-sustaining cost (AISC) or A$340/oz ($228/oz ) to A$1,750/oz ($1,175/oz).

“Mungari has demonstrated its capacity to consistently and reliably deliver approximately 135,000 oz/y in recent years,” Evolution’s Managing Director and CEO, Lawrie Conway said. “This plant expansion will unlock the very large regional resource base, and grow production to more than 200,000 oz/y post-commissioning.

“The expansion was always envisaged and formed part of our due diligence when we acquired the Kundana and East Kundana properties in 2021,” Conway said. “Having successfully integrated the operations, this is now the next logical phase of making Mungari a cornerstone asset of Evolution.”

The expansion project will ramp up during the September 2023 quarter with a 30-month construction period, including long-lead items and approvals, for commissioning by the end of the March 2026 quarter.