TORONTO, March 1, 2021 /PRNewswire/ - Golden Star Resources Ltd. (NYSE American: GSS) (TSX: GSC) (GSE: GSR) ("Golden Star" or the "Company") today filed a National Instrument 43-101 ("NI 43-101") technical report ("Technical Report") which includes a mineral reserve and resource update and a preliminary economic assessment ("PEA") of the potential expansion of the Southern Extension zone in the Wassa underground gold mine in Ghana ("Wassa Underground"). The Technical Report is available on the Company's website and under the Company's profile on SEDAR at www.sedar.com. All references herein to "$" are to United States dollars. Figure 1: Wassa Mine Longitudinal View showing Mineral Reserve and PEA Area Limits (CNW Group/Golden Star Resources Ltd.)