Golden Star Resources Ltd. (AMEX:GSS) (TSX:GSC) (GSE:GSR) (“Golden Star”) is pleased to announce results from its recent drilling program on the Hwini-Butre group of properties located on the southeastern flank of the Ashanti belt in Ghana, West Africa. The Hwini-Butre group of properties consists of an amalgamation of several concessions including and surrounding the Hwini-Butre property; adjacent to the east are the Manso and Pacific properties and to the north the Benso property. All are located within hauling distance of the Wassa Mine.

Three new discoveries have been identified at the Manso property, namely the Pretsea (not to be confused with our Prestea properties), Camp 3 and NP anomalies. These new anomalies are delineated along a 20 kilometer southwest trending structure that was earlier outlined by soil geochemistry and airborne geophysics. This favorable structure, the Manso Trend, corresponds with the contact between the Butre Mafic Volcanic rocks and the Apowa Intermediate Intrusive Complex and extends across the Manso concession from the south to the northeast. The most promising section of the structure that has been drilled thus far is located on the southern portion of the property and has been outlined by a 50 parts per billion (ppb) threshold gold geochemical soil anomaly with a strike length of 5 kilometers. Some of the more significant holes are listed below:

Hole ID   Easting (m)   Northing (m)   Elevation (m)   Azimuth (°)   Dip (°)   Drill Type   From (m)   To (m)   Drilled Width (m)   Grade Au (g/t)
PRSRC003B 178353 30241 34.09 120 -50 RC 58 59 1 32.5
NPMRB163 178284 30056 52.89 110 -50 RAB 0 10 10 26.5
NPMRB169 178317 30147 48.63 110 -50 RAB 23 30 7 12.1
NPMRB120 177177 27761 27.84 300 -50 RAB 5 9 4 10.5
NPMRC060 176179 31384 21.54 90 -50 RC 8 32 24 7.9
NRPDD003 176338 31000 20.97 90 -50 RC 75 81.3 6.3 7.6

Full details of the additional intersections are summarized in the attached table. Approximately half of the Manso Trend has been tested by drilling to date; several other anomalies will be tested during the 2008 drilling program, including the Wuredukrom and Amentin anomalies located along the northern end of the Manso Trend.

Mitch Wasel, Golden Star’s Vice President Exploration, commented that, “We are very excited about our new discoveries along this impressive Manso Trend. Although we are still in the early stages of exploration, we are very eager to continue our activities considering the excellent initial results we received from this first pass drilling campaign. In addition, the construction of the 30 kilometer extension of the haul road from Benso to Hwini-Butre is planned to start in the fourth quarter of this year and a newly discovered deposit at Manso would significantly enhance the profitability of the Wassa-HBB mining operation.”

BACKGROUND

Golden Star commenced exploration activities on the Hwini-Butre group of concessions in early 2006 concentrating on the Father Brown, Adoikrom and Dabokrom prospects in the southern portion of the property. A 20 kilometer long gold anomaly was delineated from a wide spaced (800 meter by 50 meter) shallow soil auger sampling program. This anomalous soil trend was defined by gold values ranging from 50 ppb to 3,970 ppb and was coincident with a strong potassic radiometric feature identified from regional airborne geophysics data. Potassium anomalism is often associated with hydrothermal alteration which can be indicative of a gold bearing mineralized system.

A second geochemical program with closer spaced (200 meter by 25 meter) soil auger holes was carried out to gain further information on this anomaly. A detailed ground geophysics IP (induced polarization) survey was also conducted along the southernmost potion of the Manso soil anomaly and confirmed the structure with a strong resistive and chargeable response being identified. The combined auger and IP survey results generated several drilling targets at Camp 3, Pretsea, Norpalm and Wuredukrom North.

Following the initial 400 meter drill fence spaced Rotary Air Blast (RAB) drilling success, a limited (1,200 meter) Reverse Circulation (RC) and Diamond Drilling (DD) drilling program was completed to determine the general orientation of the gold mineralized zone at depth and to help determine the controls on this mineralization. This drilling program confirmed that the gold mineralization was associated with a sheared contact between the Butre Mafic Volcanic rocks and the Apowa Intermediate Intrusive Complex.

Significant drill intersections are summarized in the table below with the full details of the drill results and a location map provided on the Company’s website at www.gsr.com.

Hole ID   Easting (m)   Northing (m)   Elevation (m)   Azimuth (°)   Dip (°)   Drill Type   From (m)   To (m)   Drilled Width (m)   Grade Au (g/t)
AMTRB020 179500 50782 91.69 90 -50 RAB 6 8 2 0.86

AMTRB027

179317 50825 100.1 90 -50 RAB 28 30 2 0.81
AMTRB028 179340 50824 101.6 90 -50 RAB 20 22 2 5.21
AMTRB028 179340 50824 101.6 90 -50 RAB 15 18 3 1.19
AMTRB029 179363 50825 100.8 90 -50 RAB 8 10 2 1.33
AMTRB030 179385 50824 97.15 90 -50 RAB 0 4 4 1.22
AMTRB050 179833 51219 94.14 90 -50 RAB 7 9 2 1.52
AMTRB057 179325 51129 88.9 90 -50 RAB 16 19 3 1.01
AMTRB080 178972 51622 82.72 90 -50 RAB 1 3 2 1.76
AMTRB087 178949 51809 94.61 90 -50 RAB 10 16 6 0.78
Hole ID Easting (m) Northing (m) Elevation (m) Azimuth (°) Dip (°) Drill Type From (m) To (m) Drilled Width (m) Grade Au (g/t)
AMTRB094 178930 51990 87.05 90 -50 RAB 14 17 3 0.79
AMTRB095 178955 51990 86.11 90 -50 RAB 4 9 5 1.33
AMTRB099 179036 51988 90.2 90 -50 RAB 1 3 2 2.52
AMTRB139 179292 50725 103.7 90 -50 RAB 7 11 4 1.45
AMTRB144 179354 50825 101.4 90 -50 RAB 7 9 2 2.29
AMTRB145 179376 50825 99.01 90 -50 RAB 6 11 5 1.79
CP3DD001 177085 27806 49.18 120 -50 DD 31 35 4 0.86
CP3DD001A 177084