Shrinkage Mining of the West Reef Resource, Prestea Underground Mine, Ghana
NI 43-101 Technical Report on Preliminary Economic Assessment Shrinkage Mining of the West Reef Resource, Prestea Underground Mine, Ghana Effective Date: December 18, 2014 Golden Star Resources Ltd. 150 King Street West Sunlife Financial Tower, Suite 1200 Toronto ON, M5H 1J9, Canada Qualified Persons Martin P. Raffield, Ph.D., P.Eng. S. Mitchel Wasel, B.Sc. AusIMM (CP) December 2014 Golden Star Resources Ltd. i Shrinkage Mining of the West Reef Resource, Prestea Underground Mine, Ghana NI 43-101 Preliminary Economic Assessment Executive Summary (Item 1) Golden Star Resources Ltd. (“GSR”) is a Canadian Federally-incorporated, international gold mining and exploration company producing gold in Ghana, West Africa. GSR also conducts gold exploration in South America. The Prestea Underground Mine is an inactive underground gold mine located 15km south of the Bogoso mine and adjacent to the town of Prestea. The mine consists of two usable access shafts and extensive underground workings and support facilities. Access to the mine site is via an unpaved road from Tarkwa. The Prestea Underground Mine was mined from the 1870’s until 2002, when mining ceased following an extended period of low gold prices in the late 1990s and early 2000s. The Prestea mining area has produced approximately nine million ounces of gold, the second highest production of any mine in Ghana. The underground workings are extensive, reaching depths of approximately 1,450 meters and extending along a strike length of 9 kilometers. Underground workings can currently be accessed via two surface shafts, one near the town of Prestea (Central Shaft) and a second approximately four kilometers to the southwest at Bondaye.
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