Bisha Logo

October 21, 2013

Bisha Mining Announces Further Drilling Results from Northwest Zone

 

Bisha Mining Share Company (BMSC) is pleased to announce further diamond drill results from resource definition drilling at the Northwest Zone poly-metallic massive sulphide deposit, located 2 kilometers from the Bisha processing plant within the Bisha mining license.

HIGHLIGHTS

  • Northwest Zone still open to south and north
  • Four down dip step-out holes demonstrate that the mineralized system continues at depth
  • Additional parallel zone identified but limited drilling to date
  • Maiden mineral resource estimate in early 2014

 

Selected New High Grade Results Include:

  • Hole NWDD129 – 14.1 m* @ 1.06 % Cu and 3.89% Zn from 111.9 m to 126.0 m (MS)*
  • Hole NWDD130 – 14.0 m @ 17.2 g/t Au and 49.0 g/t Ag from 101.0 m to 115.0 m (S)
  • Hole NWDD131 – 18.5 m @ 2.11 % Cu and 13.5 g/t Ag from 93.5 m to 112.0 m (M-S)
  • Hole NWDD160 – 3.7 m @ 2.21% Cu and 3.3 g/t Au and 12.1 g/t Ag from 216.0 m to 219.7 m (M-S)
  • Hole NWDD173 – 20.5 m @ 1.40 % Cu and 17.3 g/t Ag from 77.5 m to 98.0 m (M-S)
  • Hole NWDD185 – 5.2 m @ 5.2 g/t Au and 13.9 g/t Ag from 52.5 m to 57.7 m (O)
  • Hole NWDD187 – 14.2 m @ 1.21 % Cu and 2.06 % Zn from 110.6 m to 124.8 m (M-S)
  • Hole NWDD189 – 14.5 m @ 3.2 g/t Au from 39.0 m to 53.5 m (O)
  • Hole NWDD195 – 5.2 m @ 0.60 % Cu and 3.64 % Zn and 27.5 g/t Au and 174.6 g/t Ag (M-S) from 105.8 m  to 111.0 m (M-S)

*Notes: Mineralization Types:  M = Massive Sulphide; M-S = Massive and Stringer Sulphide; S = Stringer Sulphides; O = Oxidized Material; D = Dyke. Intervals given are drilled metres. True widths are generally 70 to 90% of drilled length depending on hole and mineralisation orientation.

Selected holes are shown in the deposit map below.

BMSC completed the resource definition and expansion drilling program totaling 216 holes at the Northwest Zone in May 2013 and drilled a further 4 holes in July and August 2013.  A total of 18,892 meters of drilling has been completed at the Northwest Zone in 2013.  Assay results received to-date from holes NWDD118 – NWDD198 that were completed in 2013 are included at the end of the release.  Prior drilling results were released on May 23, 2013.  Remaining results will be released later in 2013. 

Work on the maiden resource estimate is in progress and the results are expected to be included in a BMSC mineral resource and reserve update in early 2014.  The estimate will include Bisha Main and Harena resource and reserve updates and Hambok and the Northwest Zone maiden resources.

 

NWZone Map


Mineralization at the Northwest Zone occurs in a series of massive sulphide lenses hosted within altered felsic volcanic rocks containing abundant copper and zinc-rich stringer sulphide mineralization.  Gold and silver are occasional highly enriched in these stringer zones and are often associated with later dykes.  Some of the massive sulphides have been exposed to weathering at surface creating oxide zones that are locally enriched in gold.  Beneath these areas, some supergene copper mineralization may also be present.  Core recovery is often poor in the oxide zones as unconsolidated material is easily washed away and not recovered during the diamond drilling process.  Further testing of these areas by reverse circulation drilling will be completed in due course.

The mineralized system at the Northwest Zone is extensive and resource expansion opportunities remain to the north, south and at depth.  In July, four holes were drilled beneath the central and northern portions of the deposit.  This drilling demonstrated that the mineralized system continues to depth and appears to be thickening to the south.  Assays are still outstanding, but further drilling to the south is warranted.  In addition, to the east there is a parallel zone of massive sulphide that is only defined by limited drilling.  

The Northwest Zone was discovered in 2003 by the diamond drilling of an airborne EM anomaly and follow-up ground geophysics, soil sampling and drilling from 2004 to 2006 defined a 600 meter long zone of massive and stringer sulphide mineralization. Further work was deferred while the Bisha deposit was being prepared for mining.  A program of in-fill drilling was started in late 2011 designed to fully delineate the open-pit potential.  This drill program has now been completed and has successfully extended the mineralization an additional 400 meters in strike length.

 

Quality Assurance

A Quality Assurance/Quality Control program was part of the sampling program for the Northwest Zone work. This program includes a chain of custody whereby drill core samples are initially crushed and subsampled at the Bisha Mine preparation facilities before being transported to Asmara, sealed, and sent on to the laboratories of ALS Limited in Vancouver. ALS is accredited by the Standards Council of Canada. Multi-element analysis is completed using ICP-AES methods; gold is analyzed by fire assay with AAS finish. Certified reference material (standards), duplicates and blank samples are systematically inserted into the flow of core samples and results analyzed on a batch by batch basis.

Hole collars are surveyed using differential GPS; down hole survey was originally completed using the Reflex EZ shot method, now superseded with downhole gyro methods. 

Mr. Paul Gribble C.Eng., FIMMM, BMSC’s Chief Resource Geologist has been overseeing the drilling and resource work at the Northwest Zone and is a Qualified Person as defined by NI 43-101.  Mr. Gribble has reviewed the technical content of this press release and approved its dissemination.

 

Forward Looking Statements: The above contains statements regarding drill results and anticipated resource and reserve estimate.  Forward-looking statements are frequently, but not always, identified by words such as “expects,” “anticipates,” “believes,” “intends,” “estimated,” “potential,” “possible” and similar expressions, or statements that events, conditions or results “will,” “may,” “could” or “should” occur or be achieved.  Forward-looking statements are statements about the future and are inherently uncertain, and actual achievements of the Company or other future events or conditions may differ materially from those reflected in the forward-looking statements due to a variety of risks, uncertainties and other factors.  The Company’s forward-looking statements are based on the beliefs, expectations and opinions of management on the date the statements are made and the Company assumes no obligation to update such forward-looking statements in the future.

 

Bisha Mining Share Company

“Cliff T. Davis”

Cliff T. Davis
Chairman

Northwest Zone Intersections – May 12 to October 11, 2013

Hole Id

From (m)

To (m)

Length (m)

Cu (%)

Zn (%)

Au (g/t)

Ag (g/t)

Mineralization Type

NWDD118

93.0

97.0

4.0

1.03

0.02

0.6

11.8

S

and

121.3

132.8

11.5

1.29

0.66

0.3

10.9

M-S

NWDD119

73.0

80.7

7.70

0.54

0.03

0.2

76.6

M

NWDD129

111.9

126.0

14.1

1.06

3.89

0.3

14.4

M

and

137.0

141.0

4.0

0.50

0.24

0.1

5.8

M

and

152.0

160.0

8.0

0.56

0.10

2.0

10.6

M-S

and

169.0

216.0

47.0

0.82

0.13

0.5

8.4

M-S

NWDD130

76.0

91.0

15.0

1.29

0.00

0.1

8.9

M

and

101.0

115.0

14.0

0.36

0.01

17.2

49.0

S

NWDD131

93.5

112.0

18.5

2.11

0.04

0.3

13.5

M-S

NWDD132

76.0

125.0

49.0

0.71

0.05

0.1

7.5

M-S

NWDD134

72.0

84.9

12.9

0.77

0.01

0.3

7.6

 M-S

NWDD135

68.0

74.0

6.0

1.51

0.00

0.1

13.3

M

and

108.0

125.6

17.6

1.45

0.06

0.1

11.8

M

NWDD136

78.7

93.8

15.1

1.02

0.01

0.1

4.9

M

and

102.0

109.2

7.2

0.86

0.15

0.1

7.6

M

and

126.0

135.3

9.3

0.83

0.11

0.1

6.5

M

and

151.0

167.0

16.0

0.58

0.14

0.1

4.6

M

and

192.0

196.0

4.0

0.00

0.02

9.3

22.0

S

NWDD137

50.00

54.0

4.0

0.02

1.76

0.0

9.9

O

NWDD138

31.50

34.3

2.8

0.25

1.46

0.3

15.0

M-S

NWDD139

NSV

 

 

 

 

 

 

 

NWDD140

NSV

 

 

 

 

 

 

 

NWDD141

NSV

 

 

 

 

 

 

 

NWDD142

56.0

59.4

3.4

1.5

0.01

0.0

0.5

O

and

81.0

85.0

4.0

0.12

4.58

0.1

8.8

S

and

141.0

181.0

40.0

0.96

0.30

0.1

8.5

M-S

NWDD143

81.0

85.3

4.3

0.77

0.01

0.1

4.6

M

and

102.0

107.0

5.0

1.46

0.12

0.1

12.2

M

and

152.0

157.6

5.6

0.9

0.15

0.1

6.9

M

NWDD154

57.0

62.0

5.0

1.00

0.13

0.0

2.6

O

and

178.7

261.0

82.3

1.15

0.64

0.9

10.8

M-S 

NWDD157

NSV

             

NWDD159

145.9

154.0

8.1

0.19

2.58

0.2

19.7

S

and

216.0

236.0

20.0

0.73

0.06

0.7

5.9

S-D

NWDD160

216.0

219.7

3.7

2.21

0.22

3.3

12.1

M-S

NWDD161

143.0

147.2

4.2

0.38

1.53

0.2

10.1

M-S

and

193.0

216.8

23.8

1.46

0.08

0.3

6.0

M-S

NWDD162

266.0

268.0

2.0

0.01

0.01

4.8

15.2

D

NWDD163

148.8

160.0

11.2

0.82

6.47

0.2

21.7

M

and

214.5

220.0

5.5

0.62

0.01

0.2

2.9

S

NWDD164

60.0

85.5

25.5

1.07

0.01

0.1

6.3

M

and

93.0

106.3

13.3

0.97

0.02

2.2

12.0

D

NWDD165

84.0

90.0

6.0

1.01

0.02

0.2

8.3

M-S

and

110.0

158.0

48.0

0.70

0.32

0.1

7.5

M

NWDD166

28.5

31.0

2.5

0.01

0.01

6.0

2.4

O

and

40.0

41.5

1.5

0.00

0.00

4.4

19.0

O

NWDD170

40.7

44.8

4.2

0.01

0.03

1.7

270

O

 including

43.5

44.8

1.3

0.00

0.06

0.6

837

 O

NWDD172

55.5

58.0

2.5

0.00

0.02

1.2

166.4

O

including

55.5

56.0

0.50

0.01

0.04

2.7

440

O

NWDD173

77.5

98.0

20.5

1.40

0.03

0.8

17.3

 M-S

NWDD174

98.0

102.0

4.0

0.58

0.01

0.1

2.0

M-S

NWDD175

48.0

55.7

7.70

0.01

0.03

1.6

15.9

O

NWDD176

82.4

88.9

6.50

0.42

0.15

0.5

19.5

M-S

NWDD177

82.0

118.0

36.0

1.05

0.04

0.2

9.4

M-S

NWDD178

78.0

108.4

30.4

1.13

1.83

0.2

26.7

M

including

78.0

79.5

1.50

5.59

0.19

0.1

13.0

M

NWDD179

115.5

133.5

18.0

1.05

1.35

0.2

12.5

M

and

134.3

147.0

12.7

1.00

1.55

0.2

9.5

 M

NWDD180

NSV

             

NWDD181

130.3

160.0

29.7

1.02

0.94

0.2

8.7

M-S

NWDD182

NSV

             

NWDD183

NSV

 

 

 

 

 

 

S

NWDD184

148.2

153.3

5.1

0.92

0.34

1.0

9.3

M-S

NWDD185

52.5

57.70

5.2

0.00

0.01

5.2

13.9

O

NWDD186

177.0

198.0

21.0

0.66

1.56

0.2

6.1

M-S

including

183.0

185.0

2.00

0.50

7.23

0.2

16.0

M-S

and including

189.0

192.2

3.2

0.72

3.58

0.3

8.4

M-S

NWDD187

110.6

124.8

14.2

1.21

2.06

0.4

11.5

M-S

including

112.0

118.0

6.0

1.16

3.88

0.2

10.0

M-S

and including

120.0

124.8

4.8

1.54

0.79

1.0

16.4

M-S

NWDD188A

196.0

217.0

21.0

0.44

2.48

0.2

4.2

M-S

NWDD189

39.0

53.5

14.5

0.00

0.01

3.2

7.0

O

including

39.0

40.5

1.50

0.00

0.00

7.2

7.0

O

including

46.5

49.7

3.20

0.01

0.03

10.9

8.0

O

NWDD190

42.0

46.5

4.5

0.00

0.02

3.6

15.5

O

NWDD191

161.0

172.0

11.0

0.08

0.16

3.3

8.1

and

183.0

187.0

18.0

0.91

1.22

0.3

7.5

M

NWDD193

163.6

172.0

8.4

0.80

2.73

0.3

11.1

M-S

NWDD194

204.1

213.0

8.90

0.48

3.26

0.0

9.3

M-S

NWDD195

105.8

111.0

5.2

0.60

3.64

27.5

174.6

M-S

including

107.5

109.0

1.5

0.50

1.74

34.9

208.3

M-S

and

109.0

110.0

1.0

0.21

4.49

95.8

558.0

D

NWDD196

81.0

85.0

4.0

0.05

2.12

0.1

6.8

 S

NWDD197

247.0

254.5

7.5

0.02

0.04

11.6

17.7

D

NWDD198

NSV

             

NWGT005

118.0

133.0

15.0

0.01

3.06

0.9

39.8

M

NWGT008

52.2

55.1

2.90

0.32

1.66

0.1

15.4

M-S

 

Mineralization Types:  M = Massive Sulphide; M-S = Massive and Stringer Sulphide; S = Stringer Sulphides, O = Oxidized Material; D = Dyke
Assay results for holes NWDD122-124 and NWDD126-128 were previously reported on May 23, 2013
Assay results are still awaited for holes NWDD125, NWDD133, NWDD144-153, NWDD155-156, NWDD158, NWDD167-169, NWDD171, 192
Holes prefixed NWGT are results encountered in geotechnical holes drilled for pit stability considerations.

Northwest Zone Drill Collars 2013

Hole ID

Final Depth

Azimuth

Dip

UTM_East

UTM_North

Elevation

NWDD118

237.0

135

-50

338768.466

1717913.493

554.861

NWDD119

111.0

135

-50

338553.038

1717670.663

554.790

NWDD129

306.0

135

-50

338666.139

1717911.602

554.018

NWDD130

202.5

135

-50

338595.152

1717735.030

554.259

NWDD131

205.5

135

-50

338630.379

1717770.385

553.991

NWDD132

217.5

135

-50

338701.016

1717841.384

554.526

NWDD134

158.0

135

-50

338725.783

1717816.349

554.840

NWDD135

164.0

135

-50

338637.947

1717798.227

553.523

NWDD136

280.5

135

-50

338644.942

1717862.094

553.851

NWDD137

134.0

135

-50

338554.936

1717527.642

555.507

NWDD138

80.0

135

-50

338591.003

1717491.66

555.744

NWDD139

152.0

135

-50

338968.505

1717821.387

559.279

NWDD140

239.0

135

-50

338916.055

1718091.406

556.346

NWDD141

152.0

135

-50

338967.656

1718034.317

556.735

NWDD142

233.1

135

-50

338609.436

1717862.169

553.431

NWDD143

202.5

135

-50

338634.038

1717837.505

553.595

NWDD154

328.0

135

-50

338630.087

1717946.923

553.371

NWDD157

115.0

135

-50

338747.348

1717759.595

555.210

NWDD159

274.0

135

-50

338559.514

1717876.674

552.846

NWDD160

319.0

135

-50

338634.561

1717978.326

553.208

NWDD161

265.5

135

-50

338549.378

1717851.563

552.840

NWDD162

352.5

135

-52.5

338445.983

1717778.085

553.033

NWDD163

304.0

135

-50

338662.444

1717950.72

553.618

NWDD164

157.5

135

-50

338570.568

1717688.801

554.469

NWDD165

178.0

130

-50

338700.300

1717872.755

554.528

NWDD166

85.5

135

-50

338602.361

1717657.058

554.721

NWDD170

85.5

135

-50

338618.067

1717676.512

554.758

NWDD172

75.0

135

-50

338570.358

1717653.719

555.030

NWDD173

117.0

135

-50

338768.493

1717874.114

555.328

NWDD174

106.5

135

-50

338538.326

1717685.918

554.951

NWDD175

82.5

135

-50

338818.164

1717865.374

555.957

NWDD176

157.5

135

-44

338496.742

1717763.079

553.560

NWDD177

133.0

135

-50

338786.201

1717897.539

555.511

NWDD178

115.5

315

-50

338508.536

1717572.762

555.363

NWDD179

169.5

135

-50

338742.376

1717908.753

554.946

NWDD180

126.0

315

-50

338435.322

1717435.401

554.385

NWDD181

169.5

135

-50

338758.242

1717926.070

555.013

NWDD182

190.5

135

-48

338508.883

1717650.831

555.735

NWDD183

190.5

135

-45

338479.183

1717649.579

555.274

NWDD184

175.5

135

-50

338772.176

1717946.54

554.573

NWDD185

106.5

135

-50

338846.958

1717872.747

556.201

NWDD186

226.5

135

-50

338747.515

1717971.306

554.481

NWDD187

188.0

135

-50

338823.104

1717937.679

557.228

NWDD188

76.5

135

-50

338772.203

1718017.784

554.553

NWDD188A

250.5

135

-50

338773.965

1718015.863

554.707

NWDD189

100.5

135

-50

338870.523

1717884.155

556.629

NWDD190

112.5

135

-50

338877.698

1717912.004

556.965

NWDD191

286.5

135

-50

338761.460

1717992.849

554.695

NWDD193

205.5

135

-50

338842.319

1718018.193

555.662

NWDD194

262.5

135

-48

338812.577

1718046.563

555.015

NWDD195

143.0

135

-50

338916.480

1718014.815

556.944

NWDD196

259.5

135

-49

338840.238

1718084.804

555.176

NWDD197

319.5

135

-50

338774.992

1718085.925

554.557

NWDD198

211.5

135

-50

338881.008

1718050.166

556.151