Ahafo is an open pit operation that utilises conventional mining methods. The processing plant comprises a 7.5Mt/a carbon-in-leach (CIL) circuit for gold recovery. Development of the Subika deposit is ongoing for gold production from underground targets. In addition, a mill expansion program is ongoing to increase total mill capacity to 10Mt/a, increasing gold production while lowering costs and off-setting impact of lower grades and harder ore. Commercial production from Subika underground deposit is expected in H2 2018. In 2017, the mine produced 349koz of gold.