About Us


Wassa is located in south-western Ghana. Golden Star commenced production from the surface operation at Wassa in 2005 and commercial production was achieved at Wassa Underground on January 1, 2017. In early 2018 Wassa transitioned into an underground-focused operation. Thanks to the scale of the historical open pit mining operation the processing plant has significant excess capacity and is currently only running at 70-80% (based on 2020 actuals) utilization. Development of the large inferred mineral resource which comprises the southern Extension zone, was the subject of a Preliminary Economic Assessment which was included in the March 2021 Technical Report. Given the scale of the resource at Wassa, the Company is exploring the potential to increase the mining rate in order to fill the mill.

Wassa Underground has exploration upside through extension drilling of B Shoot North, step out drilling on B Shoot South, step out drilling on the 242 Trend and the extension of the F Shoot. This work is expected to increase the mine life of Wassa Underground in the short, medium and long term.


Operations at a Glance

Parent and ownership percentage Golden Star Resources – a subsidiary of Chifeng Gold Group (90%) / Government of Ghana (10%)
Country of operation Ghana
Commodity being mined Gold
P&P Mineral Reserves 1.09 million ounces
Average grade of P&P Mineral Reserves Underground 10.8 Mt at 3.1 g/t Au
M&I Mineral Resources 29.3 Mt at 3.8 g/t Au for 3.5 Moz contained
Remaining reserve life of mine 6 years
Geological setting Quartz carbonate veins with pyrite
Underground mining method Sub-level longhole open stoping
Processing method Carbon-in-leach
Processing plant capacity 2.7Mtpa
2021 Production
Gold produced (oz) 155koz

Supplemental Documents to Press Release Dated November 13, 2019

Figure 1: Wassa Underground: Isometric View Looking East Showing Significant Results Figure 2: Wassa Underground: Cross Section 18875N Looking North Showing the Change of the Interpretation Appendix A Supplemental Docs for PR July 15 Figure 1: Wassa Drilling Update, 2019 YTD Figure 2: Father Brown – Adoikrom Long section significant drill hole results Appendix A: All Wassa Surface Drilling Results Post 2018 Year end Resource Model Estimates Appendix B: All Father Brown Surface Drilling Results from the Inferred expansion drilling – Post 2018 Year end Resource Model Estimates Additional Long Sections