Nautilus Minerals Intersects More High Grade Copper

Recent ocean floor drilling at Nautilus Minerals Inc.’s Solwara 1 project in Papua New Guinea has revealed a number of intercepts of copper mineralization exceeding 20 per cent, and has confirmed extensions of mineralization at the deposit.

Results for 10 holes drilled during the second half of December, 2010, demonstrate the presence of high-grade copper at all sites.

The results included:

A 7.6-metre intercept averaging 12 per cent copper;

Identification of the deepest copper-rich mineralization drilled to

date, at 29 metres below the seafloor;

Interception of copper-rich sulphides to a depth of 19.2 metres in hole

SD179, which is 15 metres below the previously modelled massive

sulphide level.

• A 7.6-metre intercept averaging 12 per cent copper;
• Identification of the deepest copper-rich mineralization drilled to

date, at 29 metres below the seafloor;

• Interception of copper-rich sulphides to a depth of 19.2 metres in hole

SD179, which is 15 metres below the previously modelled massive

sulphide level.

These results, based on hand-held X-ray fluorescence (XRF) analyses, are outlined in the “Selected mineralized intersections from Solwara 1” table. (XRF results are subject to confirmation.)

The program has involved a total of 23 holes drilled at 17 locations, approximately 1,600 metres below sea level and extending to a maximum depth of 52 metres below the seafloor. Results for the first 13 holes were released in Stockwatch on Dec. 16, 2010.

Nautilus’s chief executive officer, Steve Rogers, said the results again demonstrated the richness of the Solwara 1 deposit.

“It is increasingly clear that the mineralization is more extensive than initially identified. In addition, the copper grades we are finding in these seafloor deposits are significantly higher than the grades that are typical in land-based projects, underwriting the economics of this exciting new mining frontier,” he said.

Nautilus continues to refine drilling techniques, lifting core recoveries and productivity. Program expenditure may now exceed $20-million (U.S.), subject to continued improvement in drilling performance and positive results.

“Our focus for the remainder of the program is to optimize drilling performance as we enhance Nautilus’s knowledge of Solwara 1 and other Bismarck Sea massive sulphide systems,” said Mr. Rogers. “We are particularly looking forward to drilling at the North zone of Solwara 1, Solwara 5, Solwara 12 and other systems nearby,” he said.

SELECTED MINERALIZED INTERSECTIONS FROM SOLWARA 1

(based on XRF analysis of pulp residues)

Copper

mineralization

intersected

below

previously

Reco- modelled

Inter- Inter- Inter- very depth of

val val val For Cop- massive

Hole End of Length From To Inter- per Zinc sulphide

ID hole (m) (m) (m) (m) val (%) (%) (m)

SD178 20.74 0.78 1.38 2.16 100% 11.7 1.0

0.44 4.76 5.20 100% 11.9 0.6

2.67 7.05 9.72 71% 13.8 3.6 -2.08(1)

SD179 22.76 1.91 2.08 3.99 86% 25.6 1.2

0.35 6.11 6.46 100% 7.4 0.9

0.47 8.30 8.77 100% 31.0 0.0

5.07 10.58 15.65 59% 20.9 0.0

3.52 15.65 19.17 36% 5.5 0.0 14.97

SD180 45.24 7.63 0.72 8.35 51% 11.6 0.3

2.62 14.75 17.37 64% 8.5 0.1 3.57

SD182 19.48 3.10 1.28 4.38 71% 8.2 0.1 -3.02(1)

SD183 35.85 1.39 0.25 1.64 71% 10.0 2.1

2.09 7.74 9.83 100% 3.2 0.0 0.23

SD184 4.73 4.09 0.35 4.44 89% 13.1 1.3 (2)

SD186 51.62 12.65 0.45 13.10 97% 4.3 1.6

4.36 24.64 29.00 60% 11.1 0.0 9.64

SD187 5.48 4.21 0.84 5.05 43% 11.7 2.3 (3)

(1) Negative values indicate a base of mineralization closer to

the surface than the previously modelled base of massive

sulphide.

(2) Hole abandoned. Site redrilled by SD186.

(3) Hole abandoned. Site redrilled by SD188 (awaiting core processing

and XRF analysis).

From To Length XRF Cu XRF Zn XRF Pb

Hole m m m Lithology Recovery % % %

SD165 0.00 1.72 1.72 Core loss 0%

SD165 1.72 1.83 0.11 Cemented sediment 100% 0.2 0.3 4.9 *(1)

SD165 1.83 1.98 0.15 Sparry precipitate 100% 0.3 0.5 10.3

SD165 1.98 2.47 0.49 Coherent volcanic 100% 0.0 0.0 0.0

SD165 2.47 4.04 1.57 Core loss 0%

SD166 0.00 1.72 1.72 Core loss 0%

SD166 1.72 1.84 0.12 Sparry precipitate 100% 1.9 0.3 1.1 *(1)

SD166 1.84 1.99 0.15 Conduit facies 100% 23.9 0.0 0.0 *(1)

SD166 1.99 2.57 0.58 Cemented sediment 100% 19.6 0.2 0.5

SD166 2.57 2.94 0.37 Conduit facies 100% 25.9 0.1 0.1

SD166 2.94 20.97 18.03 Core loss 0%

SD166 20.97 21.66 0.69 Volcaniclastic breccia 100% 0.3 0.0 0.0

SD166 21.66 25.64 3.98 Core loss 0%

SD166 25.64 25.76 0.12 Volcaniclastic breccia 100% 0.6 0.0 0.0 *(1)

SD166 25.76 30.31 4.55 Core loss 0%

SD166 30.31 31.12 0.81 Volcaniclastic breccia 100% 0.2 0.0 0.0

SD166 31.12 31.94 0.82 Volcaniclastic breccia 100% 2.1 0.0 0.0

SD166 31.94 35.08 3.14 Core loss 0%

SD167 0.00 2.02 2.02 Core loss 0%

SD167 2.02 2.47 0.45 Conduit facies 100% 3.9 0.1 1.3

SD167 2.47 2.90 0.43 Sediment, silt-sand-gravel 100% 3.9 0.1 1.3

SD167 2.90 2.95 0.05 Cemented sediment 100% 3.9 0.1 1.3

SD167 2.95 4.38 1.43 Core loss 0%

SD167 4.38 4.65 0.27 Conduit facies 100% 3.8 0.2 2.9

SD167 4.65 6.70 2.05 Core loss 0%

SD167 6.70 7.23 0.53 Sulphide dominant rock 100% 6.7 0.1 0.1

SD167 7.23 10.41 3.18 Core loss 0%

SD167 10.41 10.48 0.07 Sulphide dominant rock 100% 9.8 0.1 1.9 *(1)

SD167 10.48 12.70 2.22 Core loss 0%

SD167 12.70 12.86 0.16 Sulphide dominant rock 100% 6.5 0.1 0.8

SD167 12.86 15.01 2.15 Core loss 0%

SD167 15.01 15.10 0.09 Sulphide dominant rock 100% 17.6 0.1 0.7 *(1)

SD167 15.10 16.53 1.43 Core loss 0%

SD167 16.53 16.57 0.04 Sulphide dominant rock 100% 10.6 0.1 0.5 *(1)

SD167 16.57 20.90 4.33 Core loss 0%

SD167 20.90 21.22 0.32 Sulphide dominant rock 100% 15.4 0.1 0.9

SD168 0.00 1.54 1.54 Core loss 0%

SD168 1.54 1.69 0.15 Cemented sediment 100% 18.1 0.1 0.2

SD169 0.00 2.08 2.08 Core loss 0%

SD169 2.08 2.22 0.14 Cemented sediment 100% 3.9 0.2 0.3

SD169 2.22 2.64 0.42 Conduit facies 100% 17.9 0.1 0.2

SD169 2.64 3.25 0.61 Core loss 0%

SD169 3.25 3.69 0.44 Sulphide dominant rock 100% 9.6 0.0 0.1

SD169 3.69 4.42 0.73 Core loss 0%

SD169 4.42 5.43 1.01 Sulphide dominant rock 100% 4.8 0.0 0.1

SD169 5.43 6.34 0.91 Sulphide dominant rock 100% 7.5 0.1 0.4

SD169 6.34 7.22 0.88 Sulphide dominant rock 100% 6.1 0.2 0.5

SD169 7.22 7.72 0.50 Core loss 0%

SD169 7.72 7.82 0.10 Sulphide dominant rock 100% 6.6 0.1 0.2

SD169 7.82 8.64 0.82 Core loss 0%

SD169 8.64 8.91 0.27 Sulphide dominant rock 100% 3.2 0.1 0.1

SD169 8.91 9.55 0.64 Core loss 0%

SD169 9.55 9.74 0.19 Sulphide dominant rock 100% 5.0 0.1 0.1

SD169 9.74 10.46 0.72 Core loss 0%

SD169 10.46 11.11 0.65 Sulphide dominant rock 100% 5.1 0.0 0.1

SD169 11.11 11.96 0.85 Core loss 0%

SD169 11.96 12.47 0.51 Sulphide dominant rock 100% 10.1 0.1 0.1

SD169 12.47 13.49 1.02 Core loss 0%

SD169 13.49 13.57 0.08 Sulphide dominant rock 100% 4.9 0.0 0.1

SD169 13.57 15.01 1.44 Core loss 0%

SD171 0.00 0.90 0.90 Core loss 0%

SD171 0.90 0.91 0.01 Sediment, silt-sand-gravel 100% 0.3 0.3 1.7

SD171 0.91 1.19 0.28 Cemented sediment 100% 0.3 0.3 1.7

SD171 1.19 1.93 0.74 Core loss 0%

SD171 1.93 2.70 0.77 Sulphide dominant rock 100% 9.9 0.1 0.1

SD171 2.70 2.85 0.15 Core loss 0%

SD171 2.85 3.64 0.79 Sulphide dominant rock 100% 9.7 0.1 0.2

SD171 3.64 4.43 0.79 Sulphide dominant rock 100% 5.9 0.1 0.2

SD171 4.43 4.93 0.50 Core loss 0%

SD171 4.93 5.67 0.74 Sulphide dominant rock 100% 7.0 0.1 0.1

SD171 5.67 6.10 0.43 Core loss 0%

SD171 6.10 6.73 0.63 Sulphide dominant rock 100% 2.2 0.1 0.1

SD171 6.73 7.27 0.54 Core loss 0%

SD171 7.27 7.95 0.68 Sulphide dominant rock 100% 1.8 0.1 0.1

SD171 7.95 8.43 0.48 Core loss 0%

SD171 8.43 9.08 0.65 Sulphide dominant rock 100% 1.5 0.1 0.1

SD171 9.08 10.13 1.05 Core loss 0%

SD171 10.13 10.45 0.32 Sulphide dominant rock 100% 4.2 0.1 0.1

SD171 10.45 10.72 0.27 Core loss 0%

SD172 0.00 1.82 1.82 Core loss 0%

SD172 1.82 1.98 0.16 Sediment, silt-sand-gravel 100% 0.3 0.0 0.0

SD172 1.98 2.44 0.46 Sulphide dominant rock 100% 28.3 0.1 0.1

SD172 2.44 3.50 1.06 Core loss 0%

SD172 3.50 3.71 0.21 Sulphide dominant rock 100% 28.0 0.0 0.1

SD172 3.71 5.43 1.72 Core loss 0%

SD172 5.43 5.93 0.50 Sulphide dominant rock 100% 6.7 0.1 0.1

SD172 5.93 6.60 0.67 Core loss 0%

SD172 6.60 6.73 0.13 Sulphide dominant rock 100% 5.9 0.1 0.1

SD172 6.73 7.77 1.04 Core loss 0%

SD172 7.77 8.47 0.70 Sulphide dominant rock 100% 10.5 0.1 0.0

SD172 8.47 10.13 1.66 Core loss 0%

SD172 10.13 10.20 0.07 Sulphide dominant rock 100% 5.1 0.0 0.1

SD172 10.20 12.46 2.26 Core loss 0%

SD173 0.00 0.90 0.90 Core loss 0%

SD173 0.90 1.10 0.20 Sediment, silt-sand-gravel 100% 0.3 0.0 0.0

SD173 1.10 1.35 0.25 Sulphide dominant rock 100% 30.5 0.1 0.1

SD173 1.35 3.92 2.57 Core loss 0%

SD173 3.92 4.18 0.26 Clay dominant rock 100% 5.3 0.0 0.0

SD173 4.18 5.40 1.22 Core loss 0%

SD173 5.40 5.86 0.46 Clay dominant rock 100% 2.8 0.0 0.6

SD173 5.86 6.52 0.66 Core loss 0%

SD173 6.52 7.01 0.49 Clay dominant rock 100% 0.6 0.3 1.0

SD173 7.01 7.83 0.82 Core loss 0%

SD173 7.83 7.94 0.11 Coherent volcanic 100% 0.6 0.0 0.1

SD173 7.94 8.81 0.87 Core loss 0%

SD173 8.81 9.37 0.56 Volcaniclastic breccia 100% 0.3 0.0 0.0

SD173 9.37 10.01 0.64 Core loss 0%

SD174 0.00 0.80 0.80 Core loss 0%

SD174 0.80 1.18 0.38 Conduit facies 100% 26.2 0.1 0.1

SD174 1.18 1.80 0.62 Core loss 0%

SD174 1.80 2.06 0.26 Sulphide dominant rock 100% 8.7 0.0 0.1

SD174 2.06 2.76 0.70 Core loss 0%

SD174 2.76 2.91 0.15 Sulphide dominant rock 100% 16.0 0.1 0.2

SD174 2.91 3.46 0.55 Core loss 0%

SD174 3.46 3.57 0.11 Sulphide dominant rock 100% 8.6 0.1 0.7

SD174 3.57 4.83 1.26 Core loss 0%

SD174 4.83 5.08 0.25 Sulphide dominant rock 100% 1.9 0.0 0.1

SD174 5.08 7.17 2.09 Core loss 0%

SD174 7.17 7.32 0.15 Sulphate dominant rock 100% 1.3 0.0 0.0

SD174 7.32 8.34 1.02 Core loss

SD174 8.34 8.57 0.23 Sulphate dominant rock 100% 2.1 -LOD -LOD *(1)

SD174 8.57 9.41 0.84 Core loss 0%

SD174 9.41 10.41 1.00 Sulphate dominant rock 100% 0.9 -LOD -LOD

SD174 10.41 11.33 0.92 Sulphate dominant rock 100% 0.0 -LOD -LOD

SD174 11.33 12.25 0.92 Sulphate dominant rock 100% 0.0 -LOD -LOD

SD174 12.25 12.56 0.31 Core loss 0%

SD174 12.56 13.23 0.67 Sulphate dominant rock 100% 0.0 -LOD -LOD

SD174 13.23 13.77 0.54 Core loss 0%

SD174 13.77 14.27 0.50 Sulphate dominant rock 100% 0.1 -LOD -LOD

SD174 14.27 14.66 0.39 Sulphide dominant rock 100% 0.0 -LOD -LOD

SD174 14.66 14.94 0.28 Core loss 0%

SD174 14.94 16.02 1.08 Sulphate dominant rock 100% 0.0 -LOD -LOD

SD174 16.02 16.11 0.09 Core loss 0%

SD174 16.11 17.17 1.06 Clay dominant rock 100% 0.0 -LOD -LOD

SD174 17.17 17.28 0.11 Core loss 0%

SD174 17.28 18.18 0.90 Clay dominant rock 100% 0.0 -LOD -LOD

SD174 18.18 18.45 0.27 Core loss 0%

SD174 18.45 19.15 0.70 Sulphate dominant rock 100% 0.0 -LOD -LOD

SD174 19.15 19.41 0.26 Core loss 0%

SD174 19.41 19.90 0.49 Sulphide dominant rock 100% 0.1 -LOD -LOD

SD174 19.90 20.38 0.48 Sulphate dominant rock 100% 0.0 -LOD -LOD

SD174 20.38 20.58 0.20 Core loss 0%

SD174 20.58 20.90 0.32 Clay dominant rock 100% 0.0 -LOD -LOD

SD174 20.90 21.54 0.64 Sulphide dominant rock 100% 0.0 -LOD -LOD

SD174 21.54 21.75 0.21 Core loss 0%

SD175 0.00 1.01 1.01 Core loss 0%

SD175 1.01 1.24 0.23 Cemented sediment 100% 0.2 0.1 0.6

SD175 1.24 1.34 0.10 Sparry Precipitate 100% 12.1 0.2 0.6

SD175 1.34 2.44 1.10 Core loss 0%

SD175 2.44 3.44 1.00 Sulphide dominant rock 100% 10.3 0.1 0.2

SD175 3.44 4.53 1.09 Sulphide dominant rock 100% 5.1 0.1 0.1

SD175 4.53 5.14 0.61 Core loss 0%

SD176 0.00 1.14 1.14 Core loss 0%

SD176 1.14 1.22 0.08 Cemented sediment 100% 1.0 6.7 9.8 *(1)

SD176 1.22 1.80 0.58 Sparry precipitate 100% 14.2 0.1 0.3

SD176 1.80 1.94 0.14 Sulphide dominant rock 100% 19.4 0.1 0.1

SD176 1.94 2.04 0.10 Core loss 0%

SD176 2.04 3.13 1.09 Sulphide dominant rock 100% 3.0 0.1 0.1

SD176 3.13 4.03 0.90 Sulphide dominant rock 100% 3.6 0.1 0.1

SD176 4.03 4.27 0.24 Conduit facies 100% 12.5 0.1 0.1

SD176 4.27 4.30 0.03 Core loss 0%

SD176 4.30 5.08 0.78 Conduit facies 100% 4.6 0.1 0.2

SD176 5.08 5.33 0.25 Sulphide dominant rock 100% 1.6 0.1 0.1

SD176 5.33 5.47 0.14 Core loss 0%

SD176 5.47 6.11 0.64 Sulphide dominant rock 100% 2.5 0.1 0.2

SD176 6.11 6.64 0.53 Core loss 0%

SD176 6.64 7.81 1.17 Sulphide dominant rock 100% 2.4 0.0 0.1

SD176 7.81 7.92 0.11 Core loss 0%

SD176 7.92 8.12 0.20 Sulphide dominant rock 100% 3.1 0.1 0.1

SD176 8.12 8.28 0.16 Core loss 0%

SD176 8.28 9.18 0.90 Sulphide dominant rock 100% 3.3 0.0 0.1

SD176 9.18 9.25 0.07 Core loss 0%

SD176 9.25 10.06 0.81 Sulphide dominant rock 100% 7.3 0.0 0.2

SD176 10.06 10.22 0.16 Core loss 0%

SD176 10.22 11.19 0.97 Sulphide dominant rock 100% 3.0 0.0 0.1

SD176 11.19 11.21 0.02 Core loss 0%

SD176 11.21 11.99 0.78 Sulphide dominant rock 100% 1.1 0.0 0.0

SD176 11.99 12.43 0.44 Core loss 0%

SD176 12.43 13.26 0.83 Sulphide dominant rock 100% 0.5 0.0 0.0

SD176 13.26 13.55 0.29 Core loss 0%

SD176 13.55 14.29 0.74 Sulphide dominant rock 100% 0.5 0.0 0.1

SD176 14.29 14.52 0.23 Core loss 0%

SD176 14.52 15.62 1.10 Sulphide dominant rock 100% 0.5 0.0 0.1

SD176 15.62 15.74 0.12 Core loss 0%

SD176 15.74 16.53 0.79 Sulphide dominant rock 100% 0.5 0.0 0.0

SD176 16.53 16.86 0.33 Core loss 0%

SD176 16.86 17.55 0.69 Sulphide dominant rock 100% 0.7 0.0 0.0

SD176 17.55 18.24 0.69 Sulphide dominant rock 100% 2.4 0.0 0.1

SD176 18.24 18.35 0.11 Core loss 0%

SD177 1.20 1.40 0.20 Sparry precipitate 100% 8.2 2.2 5.1

SD177 1.40 1.77 0.37 Sulphide dominant rock 100% 8.2 0.1 0.1

SD177 1.77 2.37 0.60 Core loss 0%

SD177 2.37 3.13 0.76 Sulphide dominant rock 100% 4.5 0.1 0.3

SD177 3.13 4.32 1.19 Core loss 0%

SD177 4.32 5.54 1.22 Sulphide dominant rock 100% 5.2 0.1 0.6

SD177 5.54 5.59 0.05 Core loss 0%

SD177 5.59 6.21 0.62 Sulphide dominant rock 100% 5.3 0.1 0.4

SD177 6.21 6.53 0.32 Core loss 0%

SD177 6.53 7.58 1.05 Sulphide dominant rock 100% 5.9 0.1 0.1

SD177 7.58 7.87 0.29 Core loss 0%

SD177 7.87 8.55 0.68 Sulphide dominant rock 100% 8.6 0.1 0.2

SD177 8.55 9.91 1.36 Core loss 0%

SD177 9.91 9.94 0.03 Sulphide dominant rock 100% 0.8 0.0 0.4 *(1)

SD177 9.94 12.25 2.31 Core loss 0%

SD177 12.25 12.48 0.23 Sulphide dominant rock 100% 14.5 0.1 0.1

SD177 12.48 12.83 0.35 Core loss 0%

SD177 12.83 12.93 0.10 Sulphide dominant rock 100% 9.6 0.1 0.1

SD177 12.93 13.20 0.27 Core loss 0%

SD177 13.20 14.25 1.05 Sulphide dominant rock 100% 13.5 0.1 0.2

SD177 14.25 14.42 0.17 Core loss 0%

SD177 14.42 15.75 1.33 Sulphide dominant rock 100% 14.9 0.0 0.1

SD177 15.75 15.96 0.21 Core loss 0%

SD177 15.96 16.68 0.72 Sulphide dominant rock 100% 16.1 0.1 0.1

SD177 16.68 17.47 0.79 Core loss 0%

SD177 17.47 18.65 1.18 Sulphide dominant rock 100% 8.0 0.0 0.1

SD177 18.65 19.18 0.53 Core loss 0%

SD177 19.18 20.10 0.92 Sulphide dominant rock 100% 7.7 0.0 0.1

SD177 20.10 20.68 0.58 Core loss 0%

SD177 20.68 21.20 0.52 Sulphide dominant rock 100% 1.0 0.0 0.0

SD177 21.20 21.87 0.67 Sulphate dominant rock 100% 0.2 0.0 0.0

SD177 21.87 22.20 0.33 Core loss 0%

SD177 22.20 23.18 0.98 Sulphate dominant rock 100% 0.1 0.0 0.0

SD177 23.18 23.68 0.50 Core loss 0%

SD177 23.68 23.95 0.27 Sulphate dominant rock 100% 0.1 0.0 0.0

SD177 23.95 25.19 1.24 Core loss 0%

SD177 25.19 26.33 1.14 Sulphate dominant rock 100% 0.1 0.0 0.0

SD177 26.33 26.70 0.37 Core loss 0%

SD177 26.70 27.46 0.76 Sulphate dominant rock 100% 0.0 -LOD 0.0

SD177 27.46 28.19 0.73 Core loss 0%

SD177 28.19 28.92 0.73 Sulphate dominant rock 100% 0.0 0.0 0.0

SD177 28.92 29.64 0.72 Sulphate dominant rock 100% 0.1 -LOD 0.0

SD177 29.64 29.69 0.05 Core loss 0%

SD177 29.69 30.58 0.89 Sulphate dominant rock 100% 0.0 -LOD 0.0

SD177 30.58 31.47 0.89 Sulphate dominant rock 100% 0.0 -LOD 0.0

SD177 31.47 32.70 1.23 Core loss 0%

SD177 32.70 33.89 1.19 Sulphate dominant rock 100% 0.0 -LOD 0.0

SD177 33.89 34.20 0.31 Core loss 0%

SD177 34.20 35.40 1.20 Sulphate dominant rock 100% 0.0 0.0 0.0

SD177 35.40 36.48 1.08 Core loss 0%

SD177 36.48 37.56 1.08 Sulphate dominant rock 100% 0.0 0.0 0.0

SD177 37.56 38.63 1.07 Sulphate dominant rock 100% 0.0 0.0 0.0

SD177 38.63 38.78 0.15 Core loss 0%

SD177 38.78 39.60 0.82 Clay dominant rock 100% 0.0 0.0 0.0

SD177 39.60 39.96 0.36 Sulphate dominant rock 100% 0.0 -LOD 0.0

SD177 39.96 40.20 0.24 Core loss 0%

SD177 40.20 41.26 1.06 Clay dominant rock 100% 0.0 0.0 0.0

SD177 41.26 42.32 1.06 Clay dominant rock 100% 0.0 0.0 0.0

SD177 42.32 42.48 0.16 Core loss 0%

-LOD: Below detection limit of hand-held XRF.

*(1) Small interval did not provide a pulp residue from the assay sample.

Value used is point XRF analysis on unprepared core surface.

Note: holes SD168 and SD169 were twinned holes at the site of hole SD056 drilled during 2007.

Hole SD171 was a deeper twin to SD170.

Hole SD176 was a deeper twin to SD175.

Technical information

Detailed information on the drilling program, selection of reported intervals, drilling details, treatment of core loss, sampling procedures and XRF analysis were reported previously in Stockwatch on Dec. 16, 2010.

Qualified person

The exploration results reported in this announcement have been compiled under the supervision of Nautilus’s resource leader Thomas Sant. Mr. Sant, a fellow of the Geological Society of London, a U.K. chartered geologist and a registered European geologist, has over 16 years experience in mineral exploration seeking hydrothermal systems, and is a qualified person as defined by National Instrument 43-101. Mr. Sant has reviewed and approved the technical disclosure contained in this news release.