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
Target Type
|
Azm
(°)
|
Dip
(°)
|
From
(m)
|
To
(m)
|
Drilled
Width
(m)
|
Estimated
True
Width (m)
|
Gold
Grade g/t
|
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
|
147.70
|
0.90
|
0.85
|
43.90
|
WR17-24-274S05
|
Infill
|
260
|
14
|
147.40
|
148.00
|
0.60
|
0.57
|
24.07
|
WR17-24-274S05A
|
Infill
|
261
|
14
|
147.00
|
148.10
|
1.10
|
1.04
|
75.70
|
WR17-24-274S05B
|
Infill
|
260
|
12
|
147.80
|
149.08
|
1.28
|
1.20
|
25.43
|
Including
|
|
260
|
12
|
148.15
|
149.08
|
0.93
|
0.87
|
35.00
|
WR17-24-274S06
|
Infill
|
299
|
27
|
147.20
|
150.00
|
2.80
|
2.45
|
9.77
|
WR17-24-274S07
|
Infill
|
302
|
39
|
148.50
|
149.50
|
1.00
|
0.84
|
22.32
|
WR17-24-274S08A
|
Infill
|
301
|
47
|
152.80
|
154.40
|
1.60
|
1.31
|
17.00
|
WR17-24-274S09
|
Infill
|
288
|
17
|
147.00
|
150.00
|
3.00
|
2.77
|
8.32
|
WR17-24-274S10
|
Infill
|
289
|
8.8
|
140.70
|
144.00
|
3.30
|
2.90
|
14.67
|
WR17-24-274S11
|
Infill
|
292
|
39
|
143.00
|
143.90
|
0.90
|
0.83
|
5.24
|
WR17-24-274S12
|
Infill
|
276
|
29
|
137.70
|
138.30
|
0.60
|
0.60
|
69.60
|
WR17-24-274S13
|
Infill
|
278
|
34
|
138.50
|
139.00
|
0.50
|
0.49
|
12.50
|
WR17-24-274S15
|
Infill
|
274
|
27
|
138.10
|
139.20
|
1.10
|
1.10
|
12.91
|
WR17-24-274S16
|
Infill
|
273
|
42
|
141.07
|
141.60
|
0.53
|
0.52
|
87.60
|
WR17-24-274S17
|
Infill
|
256
|
20
|
144.15
|
145.70
|
1.55
|
1.49
|
64.45
|
WR17-24-274S18
|
Infill
|
251
|
47
|
152.70
|
153.90
|
1.20
|
1.09
|
23.65
|
WR17-24-274S19
|
Extensional
|
325
|
38
|
182.30
|
183.20
|
0.90
|
0.51
|
67.20
|
WR17-24-274S20
|
Extensional
|
324
|
25
|
192.40
|
193.70
|
1.30
|
0.75
|
11.64
|
WR17-24-274S21
|
Extensional
|
317
|
12
|
192.40
|
194.50
|
2.10
|
1.37
|
0.09
|
WR17-24-274S22
|
Extensional
|
308
|
23
|
159.30
|
161.20
|
1.90
|
1.49
|
13.69
|
WR17-24-274S23
|
Extensional
|
308
|
2
|
214.70
|
216.30
|
1.60
|
1.11
|
43.77
|
WR17-24-274S24
|
Extensional
|
310
|
-11
|
256.70
|
257.50
|
0.80
|
0.47
|
11.01
|
WR17-24-274S25
|
Extensional
|
304
|
8.7
|
174.10
|
174.70
|
0.60
|
0.46
|
132.35
|
WR17-24-274S26
|
Extensional
|
305
|
-7
|
234.70
|
235.70
|
1.00
|
0.65
|
2.22
|
WR17-24-274S27
|
Extensional
|
301
|
-21
|
303.90
|
306.90
|
3.00
|
1.61
|
4.05
|
WR17-24-274S28
|
Infill
|
283
|
-11
|
198.30
|
199.80
|
1.50
|
1.10
|
12.57
|
WR17-24-274S29
|
Infill
|
277
|
-17
|
231.20
|
232.2
|
1.00
|
0.68
|
2.18
|
WR17-24-274S30
|
Infill
|
260
|
-12
|
197.50
|
200.28
|
2.78
|
2.04
|
2.89
|
WR17-24-274S31
|
Infill
|
245
|
-17
|
238.00
|
239
|
1.00
|
0.62
|
0.33
|
WR17-24-274S32
|
Infill
|
237
|
-6
|
216.70
|
219.88
|
3.18
|
2.15
|
4.06
|
WR17-24-274S33
|
Extensional
|
331
|
47
|
196.85
|
197.93
|
1.08
|
0.51
|
3.65
|
WR17-24-274S36A
|
Extensional
|
297
|
-24
|
339.40
|
340.2
|
0.80
|
0.42
|
4.44
|
WR17-24-274S37
|
Extensional
|
287
|
-26
|
268.80
|
271.9
|
3.10
|
1.68
|
7.54
|
WR17-24-274S38
|
Extensional
|
280
|
-25
|
266.9
|
268
|
1.10
|
0.62
|
5.92
|
WR24-266S02
|
Extensional
|
276
|
6.4
|
164.1
|
165.85
|
1.75
|
1.60
|
6.16
|
WR24-266S03
|
Extensional
|
276
|
-10
|
196.6
|
198.4
|
1.80
|
1.36
|
3.17
|
WR24-266S05
|
Extensional
|
291
|
5
|
174
|
175
|
1.00
|
0.85
|
5.88
|
WR24-266S06
|
Extensional
|
291
|
-10
|
211
|
212
|
1.00
|
0.72
|
0.82
|
WR24-281S01
|
Extensional
|
275
|
-28
|
225.84
|
228.30
|
2.46
|
1.32
|
15.39
|
WR24-281S02
|
Extensional
|
264
|
-26
|
219.4
|
222.10
|
2.70
|
1.50
|
17.83
|
WR24-281S03
|
Extensional
|
253
|
-6
|
163
|
163.91
|
0.91
|
0.70
|
3.46
|
WR24-281S04
|
Extensional
|
253
|
-22
|
230.8
|
232.60
|
1.80
|
1.06
|
0.87
|
WR24-281S05
|
Infill
|
279
|
10
|
127.8
|
129.60
|
1.80
|
1.67
|
57.14
|
WR24-281S06
|
Extensional
|
265
|
-18
|
183.9
|
184.60
|
0.70
|
0.47
|
6.38
|
WR24-281S07
|
Extensional
|
271
|
-7
|
145.6
|
148.50
|
2.90
|
2.32
|
1.09
|
WR24-281S08
|
Infill
|
259
|
12
|
134.6
|
136.6
|
2.00
|
1.86
|
7.50
|
WR24-281S09
|
Infill
|
289
|
17
|
135.4
|
136.6
|
1.20
|
1.11
|
0.64
|
WR24-281S10
|
Infill
|
305
|
20
|
144
|
144.6
|
0.60
|
0.49
|
0.24
|
WR24-284S01
|
Infill
|
306
|
38
|
198.1
|
198.7
|
0.60
|
0.48
|
0.67
|
WR24-284S02
|
Infill
|
291
|
33
|
193.2
|
193.7
|
0.50
|
0.47
|
4.27
|
WR24-284S03
|
Infill
|
257
|
35
|
194.2
|
194.73
|
0.53
|
0.51
|
2.10
|
WR24-284S04
|
Infill
|
272
|
21
|
179.70
|
182.4
|
2.70
|
2.67
|
29.06
|
WR24-284S05
|
Infill
|
256
|
17
|
198.10
|
199.00
|
0.90
|
0.85
|
10.62
|
WR24-284S06
|
Extensional
|
259
|
-4
|
245.15
|
245.70
|
0.55
|
0.45
|
4.15
|
WR24-284S07
|
Extensional
|
273
|
-24
|
341.00
|
342.00
|
1.00
|
0.58
|
1.53
|
WR24-284S08
|
Extensional
|
278
|
-24
|
332.80
|
333.80
|
1.00
|
0.58
|
6.44
|
WR24-284S09
|
Extensional
|
294
|
-17
|
325.80
|
327.90
|
2.10
|
1.32
|
9.10
|
WR24-287S01
|
Infill
|
260
|
38
|
177.60
|
178.30
|
0.7
|
0.68
|
1.23
|
WR24-287S02
|
Infill
|
247
|
37
|
187.80
|
188.38
|
0.58
|
0.53
|
58.30
|
WR24-287S03
|
Infill
|
248
|
19
|
182.90
|
184.00
|
1.1
|
1.00
|
34.54
|
WR24-287S04
|
Infill
|
240
|
1.6
|
196.30
|
198.00
|
1.7
|
1.29
|
1.77
|
WR24-287S05
|
Infill
|
230
|
34
|
212.00
|
213.00
|
1
|
0.76
|
1.45
|
WR24-287S06
|
Infill
|
229
|
14
|
214.70
|
215.50
|
0.8
|
0.58
|
8.05
|
WR24-287S07
|
Extensional
|
228
|
5.6
|
266.50
|
269.20
|
2.70
|
1.81
|
1.78
|
WR24-287S08
|
Extensional
|
226
|
17
|
263.00
|
264.00
|
1.00
|
0.70
|
0.47
|
WR24-287S09
|
Extensional
|
227
|
9.8
|
287.20
|
289.00
|
1.80
|
1.23
|
0.99
|
WR24-287S10
|
Extensional
|
224
|
23
|
239.30
|
240.60
|
1.30
|
0.90
|
10.09
|
WR24-287S11A
|
Extensional
|
231
|
14
|
230.00
|
231.00
|
1.00
|
0.75
|
1.90
|
WR24-287S12
|
Extensional
|
224
|
21
|
246.72
|
250.50
|
3.78
|
2.59
|
1.53
|
WR24-287S16
|
Infill
|
325
|
27
|
217.07
|
221.80
|
4.73
|
2.73
|
38.26
|
WR24-287S17
|
Infill
|
287
|
10
|
171.60
|
172.80
|
1.2
|
1.084
|
64.60
|
WR24-287S18
|
Infill
|
290
|
31
|
165.90
|
166.95
|
1.05
|
0.985
|
21.88
|
WR24-287S19
|
Infill
|
295
|
49
|
185.30
|
186.00
|
0.7
|
0.599
|
8.10
|
WR24-287S20
|
Infill
|
271
|
32
|
165.03
|
165.70
|
0.67
|
0.67
|
12.14
|
WR24-287S21
|
Infill
|
264
|
13
|
171.00
|
171.90
|
0.9
|
0.856
|
2.13
|
WR24-287S22
|
Infill
|
269
|
4.6
|
175.90
|
177.00
|
1.1
|
0.993
|
4.57
|
WR24-287S23
|
Infill
|
259
|
24
|
172.40
|
173.50
|
1.1
|
1.073
|
24.37
|
WR24-287S24
|
Infill
|
251
|
11
|
185.60
|
186.60
|
1
|
0.891
|
47.78
|
WR24-287S25
|
Infill
|
241
|
25
|
198.30
|
199.40
|
1.1
|
0.96
|
1.32
|
WR24-262S01
|
Extensional
|
247
|
13
|
169.90
|
171.00
|
1.1
|
0.964
|
37.71
|
WR24-262S02
|
Extensional
|
264
|
23
|
144.00
|
145.00
|
1
|
0.986
|
124.47
|
WR24-262S03A
|
Extensional
|
233
|
10
|
157.20
|
158.10
|
0.9
|
0.678
|
17.80
|
WR24-262S04
|
Extensional
|
279
|
15
|
158.10
|
158.71
|
0.61
|
0.58
|
5.55
|
WR24-262S05
|
Extensional
|
281
|
54
|
150.70
|
152.40
|
1.7
|
1.525
|
19.44
|
WR24-262S06B
|
Extensional
|
292
|
-1
|
175.00
|
176.00
|
1
|
0.791
|
0.77
|
WR24-262S08
|
Extensional
|
307
|
26
|
187.90
|
188.60
|
0.7
|
0.559
|
0.89
|
WR24-262S09
|
Extensional
|
327
|
40
|
188.60
|
189.30
|
0.7
|
0.38
|
13.56
|
Company Profile
Golden Star is an established
gold mining company that owns and operates the Wassa and Prestea
underground mines in Ghana,
West Africa. Listed on the NYSE
American, the Toronto Stock Exchange and the Ghana Stock Exchange,
Golden Star is focused on delivering
strong margins and free cash flow from its two high-grade, low cost
underground mines. Gold production guidance for 2019 is
220,000-240,000 ounces at a cash operating cost per ounce of
$620-$680. As the winner of the PDAC 2018
Environmental and Social Responsibility Award, Golden Star is committed to leaving a positive
and sustainable legacy in its areas of operation.
Cautionary note regarding forward-looking information
Some statements contained in this news release are
"forward-looking statements" within the meaning of the Private
Securities Litigation Reform Act of 1995 and "forward looking
information" within the meaning of Canadian securities laws.
Forward looking statements and information include, but are not
limited to, statements and information regarding: planned
exploration in Q2 and Q3 of 2019; the ability to delineate
mineralization in the drilled area to add new mineral resources to
eventually convert into mineral reserves, which would add
optionality and flexibility to the current mine plan and replace
depleted reserves; planned further drilling of 5,000 m in the
Northern West Reef Extension before the end of Q3 2019; planned
exploration in Q4 2019 to 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; the potential to mine areas drilled in
the Northern West Reef Extension over the next two years; the
intent to conduct a further 1,400 m of in-fill drilling in Q2
2019; the addition of new stopes at Prestea Underground which have
the potential to be mined during the next two years; completion of
ninth stope blasting in May 2019;
belief that the stope sequence will continue cascading to provide
ore continuity in the second half of 2019; and 2019 production
guidance and cash operating cost per ounce guidance. Generally,
forward-looking information and statements can be identified by the
use of forward-looking terminology such as "plans", "expects", "is
expected", "budget", "scheduled", "estimates", "forecasts",
"intends", "anticipates", "believes" or variations of such words
and phrases (including negative or grammatical variations) or
statements that certain actions, events or results "may", "could",
"would", "might" or "will be taken", "occur" or "be achieved" or
the negative connotation thereof. Investors are cautioned that
forward-looking statements and information are inherently uncertain
and involve risks, assumptions and uncertainties that could cause
actual facts to differ materially. There can be no assurance that
future developments affecting the Company will be those anticipated
by management. Please refer to the discussion of these and other
factors in Management's Discussion and Analysis of financial
conditions and results of operations for the year ended
December 31, 2018, and our annual
information form for the year ended December
31, 2018, each of which is filed on SEDAR at www.sedar.com.
The forecasts contained in this press release constitute
management's current estimates, as of the date of this press
release, with respect to the matters covered thereby. We expect
that these estimates will change as new information is received.
While we may elect to update these estimates at any time, we do not
undertake to update any estimate at any particular time or in
response to any particular event.
Technical Information
The technical contents of this press release have been reviewed
and approved by S. Mitchel Wasel, BSc Geology, a Qualified Person
pursuant to National Instrument 43-101. Mr. Wasel is Vice President
of Exploration for Golden Star and
an active member and Registered Chartered Professional of the
Australasian Institute of Mining and Metallurgy.
The results for Prestea Underground stated herein are based on
the analysis of saw-split HQ/NQ diamond half core or a three
kilogram single stage riffle split of a nominal 25 to 30 kg Reverse
Circulation chip sample which has been sampled over nominal one
meter intervals (adjusted where necessary for mineralized
structures). Sample preparation and analyses have been carried out
at SGS or Intertek Laboratories in Tarkwa, which are independent
from Golden Star, using a 1,000 gram
slurry of sample and tap water which is prepared and subjected to
an accelerated cyanide leach (LEACHWELL). The sample is then rolled
for twelve hours before being allowed to settle. An aliquot of
solution is then taken, gold extracted into Di-iso Butyl Keytone
(DiBK), and determined by flame Atomic Absorption Spectrophotometry
(AAS). Detection Limit is 0.01 ppm.
All analytical work is subject to a systematic and rigorous
Quality Assurance-Quality Control (QA-QC). At least 5% of samples
are certified standards and the accuracy of the analysis is
confirmed to be acceptable from comparison of the recommended and
actual "standards" results. The remaining half core is stored on
site for future inspection and detailed logging, to provide
valuable information on mineralogy, structure, alteration patterns
and the controls on gold mineralization
Additional information on earlier drilling results and Mineral
Reserve and Mineral Resource estimates at Prestea are available in
the Company's National Instrument 43-101 compliant Technical Report
titled "NI 43-101 Technical Report on Resources and Reserves,
Golden Star Resources, Bogoso/Prestea Gold Mine, Ghana" with an effective date of December
31st, 2017.
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SOURCE Golden Star Resources Ltd.