Golden Star is expanding production and reducing costs at its projects in Ghana. The company plans to transform into a high grade, low cost gold producer by ramping up production at its Wassa Underground and Prestea Underground projects. This is expected to improve the company's production profile, lower its cash operating costs per ounce and all-in sustaining costs per ounce. Commercial production is targeted to begin at Prestea Underground in the second half of 2017, which will further reduce costs as higher grade ore is produced.