Golden Star Resources reports strong ROI for underground Ghanaian gold project

Ghana-focused gold miner Golden Star Resources has reported a strong return on investment (ROI) for its brownfield Wassa underground gold project at its currently operating Wassa openpit mine in the country and expected the development to transform the company into a lower-cost gold producer. The TSX-, NYSE MKT- and Ghana Stock Exchange-listed company on Thursday published the results of a feasibility study that had estimated that the underground development could produce on average 163 000 oz/y of gold over its expected eight-year production life, with average cash operating costs of $780/oz and all-in sustaining costs of $938/oz estimated for combined Wassa operation.