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03.06.2019 22:00
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Golden Star Reports Initial High Grade Extension Drilling Results from Prestea Underground Gold Mine and Project Update
Goldbarren auf einer Waage.
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PR Newswire
TORONTO, June 3, 2019
Results Include 124.4 Grams Per Tonne of Gold Over 1 Metre
TORONTO, June 3, 2019 /PRNewswire/ - Golden Star Resources Ltd. (NYSE MKT: GSS; TSX: GSC; GSE: GSR) ("Golden Star" or the "Company") is pleased to report the results from the 2019 extension and infill drilling program at its Prestea Underground Gold Mine ("Prestea Underground") in Ghana.
HIGHLIGHTS:
- Assay results for eight diamond drill ("DD") holes along the northern extension of the West Reef were received confirming ore body extensions to the north of the current reserves, approximately 150 metres ("m") along strike between 21 and 24 levels
- Significant intercepts in the northern extensions included:
- 1.10 m @ 37.71 grams per tonne ("g/t") Au from 169.9 m in hole WR24-262S01
- 1.00 m @ 124.4 g/t Au from 144.0 m in hole WR24-262S02
- 0.90 m @ 17.8 g/t Au from 157.2 m in hole WR24-262S03A
- The exploration program for the second quarter ("Q2") and the third quarter ("Q3") of 2019 will focus on further delineation of the mineralization in this area in order to potentially bring this material into the mine reserves
- Exploration will drill test the extents of the West Reef high grade shoot up and down-dip as well as along the plunge below 24 level and above 17 level during the fourth quarter ("Q4") of 2019
Northern West Reef Extension Drilling Program Results
Drilling commenced from a newly excavated northern drill chamber at the beginning of 2019 (X cut 262N) in the Prestea Underground 24 level. Eight holes have been completed to date in this drilling program, targeting the northern extension of the defined reserves. All holes intersected the West Reef structure, with several returning strong economic grades and widths.
These results confirm the extension of gold mineralization into this area and represent the opportunity to add new stopes, along strike of the current mining front, which have the potential to be mined during the next two years.
The drilling to date conducted from the 262 N X-cut totaled 2,700 m, and a further 5,000 m are expected to be completed before the end of Q3 2019.
Initially, drilling has targeted the West Reef structure at approximately 100 × 100 m centers. In areas where economic widths and grades have been intersected, the drill spacing will be closed in to 25-30 m × 25-30 m to add confidence to the mineralization for conversion to an indicated mineral resource and subsequently to a probable mineral reserve, should the economics prove viable.
Once the infill, closer spaced drilling program has been completed in Q4 2019, the drilling plan will shift to further resource expansion drilling on a 100 × 100 m drill spacing targeting the West Reef down-dip below 24 level, and up-dip above 17 level. These drilling results will be used to update the inferred mineral resource base at Prestea Underground and, if successful, will be followed up on a tighter drill spacing in 2020. Results to date are encouraging and should the infill drilling convert these areas to indicated mineral resources, this could potentially add additional reserves in the immediate area of mining infrastructure on 24 level adding optionality and flexibility to the current mine plan as well as replacing depleted reserves.
Figures 1 and 2 show drill hole locations and can also be seen by following: http://files.newswire.ca/184/GoldenStarfig12.pdf
In-Fill Drilling Program Results
A definition drilling program in the current reserve areas of the Prestea West Reef ore body has also been ongoing to ensure adequate definition of the reserves for short to medium term planning prior to mining. The higher drilling density will enable better mine planning and stope design.
A total of 19 holes for 4,100 m have been completed in this program since drill results from Prestea were last reported, including Nine holes (2,900 m) drilled in 2019.
Project Update
Development is complete on 11 Alimak raises, and stope blasting complete on the first eight stopes. The twelfth raise is complete and the thirteenth raise has advanced approximately 150 m and long hole drilling production is set up well to ensure that the ninth stope blasting was completed in May and the stope sequence will continue cascading to provide ore continuity in the second half of 2019.
Decline development has also recently begun on the 17 level to access the second panel of ore up-dip of the stopes currently being mined from the 24 level. This will ensure continuity of ore production once the ore on the 24 level is depleted.
Operational Review at Prestea Underground
As a result of the operational challenges the Company has faced at the Prestea underground mine, a request for tenders was initiated for a technical and operational review from various consulting firms. CSA Global has been contracted to begin this review with the mandate to take a holistic approach to understanding the problems facing the operation. All aspects of technical, operational and management areas will be examined in order for recommendations to be set forth to the Company for improvements at Prestea. The Company expects to communicate an update in Q3 of 2019.
APPENDIX
36 DD Results Reported June 3, 2019
| Hole ID | Drilling | Azm (°) | Dip | From | To (m) | Drilled | Estimated | Gold |
| WR17-24-274S01 | Infill | 295 | 13 | 156.30 | 160.30 | 4.00 | 3.47 | 6.35 |
| WR17-24-274S02 | Infill | 283 | 5.7 | 158.40 | 159.20 | 0.80 | 0.71 | 3.34 |
| WR17-24-274S03 | Infill | 276 | 12 | 148.15 | 150.17 | 2.02 | 1.90 | 26.91 |
| WR17-24-274S03A | Infill | 276 | 12 | 149.50 | 151.70 | 2.20 | 2.07 | 11.83 |
| Including | | 276 | 12 | 150.00 | 150.85 | 0.85 | 0.80 | 27.00 |
| WR17-24-274S04 | Infill | 271 | 12 | 147.20 | 148.20 | 1.00 | 0.95 | 36.60 |
| WR17-24-274S4A | Infill | 270 | 11 | 146.80 | 148.50 | 1.70 | 1.61 | 14.38 |
| Including | | 270 | 11 | 146.80 Werbung Mehr Nachrichten zur Golden Star Resources Aktie kostenlos abonnieren
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