05:26 PM EDT, 09/11/2025 (MT Newswires) -- Centerra Gold ( CGAU ) edged down in after-hours Newy York trade after the company Thursday released a pre-feasibility study (PFS) for its Mount Milligan mine in British Columbia, confirming about a 10-year mine life extension to 2045.

The extension is supported by "phased, manageable non-sustaining capital expenditures totaling $186 million, most of which is not required until the early-to-mid-2030s, that we expect to fully fund from available liquidity," Chief Executive Paul Tomory said.

The company said that from 2026 to 2042, the mine is expected to produce an average of 150,000 ounces of gold and 69 million pounds of copper per year, followed by the processing of low-grade stockpiles from 2043 to 2045.

The project has an after-tax net present value (NPV) of about $1.5 billion at a 5% discount rate, based on long-term gold and copper price assumptions of $2,600 per ounce and $4.30 per pound, respectively. If prices rise to $3,500 per ounce of gold and $4.50 per pound of copper, the after-tax NPV increases to about $2.1 billion, according to the statement.

Centerra shares were last seen down US$0.15 to US$9.02 after hours. They closed up $0.29 to $12.70 on the Toronto Stock Exchange.