DENVER, COLORADO--Golden Star Resources Ltd. ("Golden Star" or the "Company") is pleased to announce an increase in its Proven and Probable Mineral Reserves ("Mineral Reserves") at its Bogoso/Prestea property in Ghana. As at May 31, 2002 its Mineral Reserves comprised 20,637,454 tonnes at an average grade of 3.15 g Au/t for total contained gold of 2,090,793 ounces. This represents an increase of 263,467 ounces compared to the stated Mineral Reserves as at December 31, 2001.

The proportion of Mineral Reserves in the proven category has also increased from 56% to 69%, as a result of additional drilling.

This increase in the Mineral Reserves is a result of additional work and drilling programs at its Bogoso/Prestea property in Ghana on the deposits known as Buesichem, Brumase/Beposo and Plant-North. The Company had not previously published any reserves for Brumase/Beposo and the new Mineral Reserves for this deposit are the result of exploration on the Prestea property since September 2001. The Company had previously published reserves for its Plant-North and Buesichem deposits and the increase in Mineral Reserves for these deposits is a result of greater confidence resulting from infill drilling. At Plant-North, this work resulted in the delineation of wider zones at the southern end of the deposit. The Plant-North deposit remains open to the south and further exploration will be carried out during the current year.

Peter Bradford, President and Chief Executive Officer of Golden Star, said: "the increase in Mineral Reserves and Mineral Resources achieved at Prestea from the last six months is a very positive confirmation of the prospectivity of the Bogoso/Prestea area for additional reserves that can be processed in the existing processing plant, which defers the requirement to commit capital expenditure to upgrade the project to process refractory sulfides beyond 2007. Furthermore the work has resulted in an overall increase in average grade that will likely realize lower overall cash costs."