Other titleBong Mieu gold mine

1Tuesday, 22 May, 12

THAILAND

LAOS

CAMBODIA

Socialist RepublicOf

VIETNAM

Gulfof

ThailandHo Chi MinhCity

Hanoi

Bangkok

Vientiane

Phnom Penh

Danang

Hue

EasternSea

Song Ma Suture

Truong Son Suture

Song Da Suture

Song Da Suture

Dong Trieu-Cam Pha

Dong Trieu-Cam Pha

Saga

ing

Faul

t Zo

ne

Phu BiaPhu Bia

Bong Mieu

Phuoc SonPhuoc Son

Sepon

Tien Thuan

Congplong

ChatreeChatree

Truong Son Fold Belt

Loei Fo

ld B

elt

Kon Tum MassifIndosinia Block

Indosinia Block

South China Block

Shan Thai Block

Bac Bo Fold Belt

5000

Ki lometers

Precambrian Craton

Granite

Significant fault

Ophiolite belt

Capital city

Olympus property

Gold/Copper mine

Legend

N

kilometers

2

Tectonic mapVietnam

Tuesday, 22 May, 12

Route mapBong Mieu

3

Bong MieuBasecamp

Bong Mieu Mine

Tuesday, 22 May, 12

Other title

4

Ho Gan(Open-pit)

Ho Ray(Proposed New Open-pit)

Nui Kem (Underground)Ho Gan-South(Underground)

1000

(meters approx)

0

N Bong Mieu

Tuesday, 22 May, 12

BONG MIEU ANTICLINE

Ho Ray -Thac TrangHo Ray -Thac Trang

Rung DeRung De

Nui Kem

Granite intrusive?Granite intrusive?

UNIT 5UNIT 5

UNIT 4UNIT 4

UNIT 3UNIT 3

UNIT 1UNIT 1

UNIT 1UNIT 1

UNIT 2UNIT 2

UNIT 3UNIT 3

UNIT 4UNIT 4

UNIT 5UNIT 5

UNIT 6UNIT 6

UNIT 7UNIT 7

B A

Section looking westBong Mieu Anticline

5

Faults + conjecturalfluid flow paths

Tentative correlation acrossthe axis of the Bong MieuAnticline (subject to review)

0 400

metersmeters

Tuesday, 22 May, 12

Thac Trang

Ho Ray

Simplified geology & drill hole locationHo Ray & Thac Trang

6

Road

Drillhole

River / creek

Delineated resource

Potential resource

Alluvium

Mica-feldspar-quartz schistintercalated with calc-silicate

Feldspar-biotite gneissic schist

Garnet-silimanite-mica-quartzschist and sericite quartz schist

Silimanite- biotite gneissic schist

Twomica granitic gneiss

Migmatized plagioclase graniticgneiss granitic gneiss

Legend

Road

Drillhole

River / creek

10

Ki lometer

N

Tuesday, 22 May, 12

Section SW-NEHo Ray

7

HR

DD

133

HR

DD

121

HR

DD

198

HR

DD

222

HR

G0

03

HR

DD

197

HR

DD

118

HR

DD

119

HR

DD

120

HR

DD

216

HRD

D22

4

300

250

200

150

m (a

sl)

0.1- 0.5 g/t Au

> 0.50 g/t Au

A B

50

meters

0

0.1- 0.5 g/t Au

> 0.50 g/t Au

HRDD102

HRG02

Diamond Drill Hole

Pit/Shaft

Fault

50

meters

0

Tuesday, 22 May, 12

Section SW-NEThac Trang

8

225

175

125

m (a

sl)

150

200

250

A

B

A

B

HRD

D13

5

HRD

D13

6

HRD

D14

3

HRD

D14

5

HRD

D15

0

HRD

D15

7

HRD

D15

8

HR

DD

239

HRDD135

Diamond Drill Hole

Fault

50

meters

0

Sericite- quartz schist intercalated with calc- silicate

Garnet- sillimanite- mica- quartz schist and sericite- quartz schist intercalated with thin bands of gneiss

0.1- 0.5 g/t Au

> 0.50 g/t Au

Legend

Tuesday, 22 May, 12

Main VeinNui Kem

9

Sa Ro Stope

Pyrite StopeKem Stope

AM Stope

AM StopeAD Stope

AD Stope

Sa Ro Stope

Pyrite StopeKem Stope

AM Stope

AM StopeAD Stope

AD Stope

Mine workings

Old French mine

Proposed mine plan

Mined out area

Old mine stopeMeasured

Indicated

Inferred

Historic Resource

5000

meters

N

meters

Tuesday, 22 May, 12

10

NKDDH017

NKDDH021

NKDDH018NKDDH020

NKDDH022

NKDDH019

1.0m @ 4.2 g/t Au1.0m @ 7.3 g/t Au

1.0m @ 1.83 g/t Au

1.3m @ 1.07 g/t Au0.9m @ 8.21 g/t Au

0.4m @ 7.08 g/t Au0.5m @ 27.86 g/t Au0.5m @ 7.57 g/t Au1.30m @ 0.71 g/t Au

0.65m @ 2.95 g/t Au

1.85m @ 2.13 g/t Au

0.65m @ 2.92 g/t Au

Projected ore body(Nui Kem Upper Vein)

Sarro Vein

surface

Sarro Lower Vein

300m300m

Level 22

Level 2

1

Projected Nui Kem Main Vein

N

S

E

W

Projected resource

meters (approx.)0 200

Legend

Mine workings

N

Nui KemUpper vein

Tuesday, 22 May, 12

Ho GanSouth deposit

11

Section

Adit 7 - 6 West

Adit

7 -

5 N

orth

Adit 7 - 4 South

Adit 7

Adit 6

1.20m11.39 Au g/t

1.00m11.32 Au g/t

0.90m2.0 Au g/t1.00m

4.63 Au g/t 0.90m9.69 Au g/t

1.10m5.99 Au g/t

1.00m7.53 Au g/t

1 703 700mN

1 703 800mN

222 900mE222 800mE222 700mE

222 780mE 222 790mE 222 800mE 222 810mE

255mRL

250mRL

50

meters

0

Site VisitTo: Level 7-6 West

(Underground)Ho Gan - South Deposit

N

Tuesday, 22 May, 12

As of 30 March 2012Resources & reserves

12

Bong Mieu Reserves & Resources

Bong Mieu Reserves Category 2012 Q 1 Residual Reserves

Tonnes (t) Grade (g/t) Oz AuHo gan Open Pit ProvenHo gan Open Pit Probable 111,656 2.06 7,385Total Total P&P 111,656 2.06 7,385

Bong Mieu Resources Category 2012 Q 1 Residual Resource

Tonnes (t) Grade (g/t) Oz AuHo Gan Measured 97,560 2.33 7,308

Indicated 343,414 1.45 16,004Inferred 66,320 2.13 4,542

Ho Ray/ Thac Trang Measured 940,100 1.92 57,730Indicated 2,153,900 1.47 101,797Inferred 4,885,600 1.38 216,764

*Other Metal Credits

Ho Ray/ Thac Trang Measured Tungsten (as Au Equivalent) 37,908Indicated 69,793Inferred 97,779

Tuesday, 22 May, 12

Historical productionBong Mieu

13

0

4000

8000

12000

16000

20000

2005 2006 2007 2008 2009 2010 2011

16911

10196

12613

1551415024

10619

119

1962

000000

3168

73217613

1770

000

11781

2875

5000

13744

15024

10619

119

Ho Gan Pit Nui Kem Pit Ho Gan UG Total

All figures Oz Au

Tuesday, 22 May, 12

2005500TPD

2006500TPD

2007500TPD

2008500TPD

2009500TPD

2010500TPD

2011500TPD

2012500TPD

2013800TPD

2014800TPD

2015800TPD

TimelineOperations

14

Ho Gan Pit

Mill Expansion for Ho RayOriginal Design for Pit Modified Design for UG

Ho Gan PitNui Kem underground

Ho Gan undergroundHo Ray pit

Tuesday, 22 May, 12

Bong MieuPersonnel

15

Mobile FleetMining Operation = 503Contractors = 98Other Services = 258Total = 761

4 Load-Haul-Dump Loaders3 Low Profile Trucks2 Jumbo Drills1 Scissor Lift

4 Shift Schedule Operation

Tuesday, 22 May, 12

Bong MieuMilling process

16

• Commissioned 2006• Gold recovery 70-75%• Nominal throughput 500 tpd• Batch process ( Ho Gan & Nui kem)• Conventional crush, grind, gravity, flotation• SCADA system to control & monitor process• ILR (Intensive leach reactors)• Inco Cyanide destruction process

Tuesday, 22 May, 12

Bong MieuRun of ore

17

Ho Gan (Open pit & underground

•Pyrite, quartz breccia•1-3% Sulfur grade (Oxidized ore)•3-5 g/t Au•Trace amounts of silver, galena & arsenopyrite

Nui kem

•Galena (pbs) & sphalerite (Zns) as high as 2%•5-6 % Sulfur grade•3-5 g/t Au

Tuesday, 22 May, 12

Original layout

18

MILL 02

Float Tails

BARRING

FURNACE

GOLD BULLION

INCO CYANIDE KILL UNIT

GRIZZLY

JAWCRUSHER

MILL 01

Falcon 01 Falcon 02

Shaking Tables

Thickeners

Flotation Circuit

Storage Area

2 Stage Cone Crusher Closed

Circuit

Run of Mine Ore

CRUSHING PLANT

MILL PLANT

TSFDAM-3

ILR 01

ILR 02

Carbon Columns

Carbon Ashing

Loaded Carbon

TSFDAM-1

Tuesday, 22 May, 12

Upgrade 2012

19

MILL 01

Float Tails

BARRING

FURNACE

GOLD BULLION

INCO CYANIDE KILL UNIT

GRIZZLY

JAWCRUSHER

MILL 02

Falcon 01 Falcon 02

Shaking Tables

Thickeners

Flotation Circuit

Storage Area

2 Stage Cone Crusher Closed

Circuit

Run of Mine Ore

CRUSHING PLANT

MILL PLANT

Tailings Area

CIL Circuit

Carbon Ashing

Loaded Carbon

Tuesday, 22 May, 12

Bong MieuGold recovery

20

Current

Gravity -Tables-Dore Melting

Flotation-ILR Leach-Carbon Adsorption-Ashing-Dore Melting

Future (underway)

Replace ILR with CIL

Tuesday, 22 May, 12

Bong MieuWater system

21

ToEnvironment

DecantSystem

Mill Pond

PumpHouse

Tailings

Area

ProcessWater

Tuesday, 22 May, 12

Bong MieuTailings facility

22

• 55 Acres• Subdivided in three compartments for Sulfide & non-Sulfide • Processed water is 100% recycled back to mill

Tuesday, 22 May, 12

23

Thank you

Tuesday, 22 May, 12