Slide 1: Consistently Delivering On Commitments – Waihi Site Visit
Consistently Delivering On Commitments November 26, 2015 Waihi Site Visit Innovation • Performance • Growth
Slide 2: Cautionary and Technical Statements
Cautionary and Technical Statements Cautionary Notes - Information Purposes Only The information contained in this presentation is provided by OceanaGold Corporation (“OGC”) for informational purposes only and does not constitute an offer to issue or arrange to issue, or the solicitation of an offer
Slide 3: Waihi Gold Mine Overview
Waihi Gold Mine Overview GOLD Reserves and Resources(1) Moz Moz Mt g/t Au g/t Ag UNDERGROUND Au Ag P&P 1.5 6.33 0.31 24.0 1.17 Reserves M&I 1.5 6.33 0.31 24.0 1.17 Resources Inferred Auckland 0.6 7.73 0.15 16.7 0.33 Resources Waihi Avg. Unit Operating Costs (H2 2015) Mining Costs NZD / t mined 90 –
Slide 4: Waihi Operation
Waihi Operation Waihi Operation Overview Magazine Admin Office Attributable to Guidance Q3 2015(1) OGC (H2 2015) Gold Production oz 65,000 – 70,000 32,997 Crusher and Stamilers per oz UG Portal Ventilation shaft AISC sold US$650 – US$680 US$497 Mill Polishing and per oz Collection Ponds Cash Costs s
Slide 5: Workforce
Workforce Waihi Gold Employees/Workers Residential operation Underground 18 Open Pit 1 Processing 50 HSE 14 Contract mining by Thiess (provide labour, Community 4 some equipment) working 24/7 with 3 crews Site Services 5 Admin/Commercial/HR 11 Exploration 8 Contract exploration drilling and security
Slide 6: Management Team
Management Team Bernie O’Leary General Manager • Over 30 years industry experience • 6 years as GM at Macraes operation • Mining engineer with extensive open pit and underground experience • Worked extensively in Australia, North and South America and New Zealand • Track record of delivering on oper
Slide 7: 30-Year History at Waihi
30-Year History at Waihi Amax ACM Normandy Newmont Normandy managed exploration Junior partner managed near mine exploration Correnso Trio Production Martha 1988-2014 2.03Moz Favona Favona 2006-2014 0.42Moz Moonlight Trio 2012-2014 0.21Moz 7 OceanaGold Corporation Innovation Performance Growth
Slide 8: Recent Historical Production and Reserves
Recent Historical Production and Reserves Waihi has a track record of reserve replenishment over its 27 year history Waihi Historical Production, Year End Reserves and Cumulative Production since 2007 1,000 1,00 0 900 864 900 800 732 800 700 622 700 555 500 600 600 460 458 500 410 350 500 360 360 36
Slide 9: Safety Performance
Safety Performance Total Recordable Injury Frequency Rate (12 Month Moving Average) 7.00 6.00 Lost-Time Injuries = 0 5.00 Medical Treatments = 1 4.00 3.00 2.00 1.00 0.00 Mar 2015 May 2015 Apr 2015 Jul 2015 Jan 2015 Jun 2015 Oct 2015 Feb 2015 Nov 2014 Dec 2014 Aug 2015 Sep 2015 Excellent safety Influ
Slide 10: Safety Initiatives
Safety Initiatives Show of Hands for Safety Vital Behaviours Open Days State-of-the-art, cross-industry ERT training program 10 OceanaGold Corporation Innovation Performance Growth
Slide 11: Sound Environmental Management
Sound Environmental Management An unwavering commitment to the environment today, for tomorrow Farming Native Fauna Rehabilitation • Management of neighbouring • Restoring lands with native • Monitoring of local wildlife farms flora Water Dotterel Heritage • Six river monitoring sites • Native Dotte
Slide 12: Tailings Impoundment
Tailings Impoundment Indigenous wildlife – birdwatch conducted twice daily Progressive rehabilitation 12 OceanaGold Corporation Innovation Performance Growth
Slide 13: Community Relations
Community Relations High engagement and monitoring due to proximity of mining activity Noise Monitoring 13 OceanaGold Corporation Innovation Performance Growth
Slide 14: Community Relations
Community Relations Vibration & Dust Monitoring 14 OceanaGold Corporation Innovation Performance Growth
Slide 15: Martha Pit Stages
Martha Pit Stages Four phases mined 1. Licensed Pit 1988 to 1999 (7.7Mt at 3.0g/t) 2. Extended Pit 1997 to 2006 (10.5Mt at 3.5g/t), north, east and south wall cutbacks, mill upgrade, new TSF 3. South Layback 2006 to 2011 (3Mt at 2.7g/t), historic pump-house 180 Au produced (koz) relocation, south wa
Slide 16: Martha Open Pit – North Wall Failure
Martha Open Pit – North Wall Failure Ore remaining in Phase 4: 0.9Mt at 2.9 g/t • North wall failure on upper ramp • Looking at re-entry options 16 OceanaGold Corporation Innovation Performance Growth
Slide 17: Correnso Underground Mine
Correnso Underground Mine Project capital commenced August 2014 1000 RL Moonlight Martha Favona Trio Correnso Grace-Empire 500 RL Capital Currently Mining Unaffected by expenditure is producing 10-12 undertaken by Martha Open-Pit complete. OGC koz per month Thiess under an wall slip expenditure plan
Slide 18: Correnso Underground Fleet
Correnso Underground Fleet Equipment Type Model Quantity Jumbos Tamrock Axera 7-240 3 Tamrock Solo 5-5V 1 Production drills Tamrock Solo DL 3305 1 Trucks Atlas Copco MT 5020 3 Charge unit Normet 1610B 1 Shotcrete unit Normet 6050W 1 Volvo L120F 2 Total carriers Volvo L120G 1 Grader Catepillar 12H 1
Slide 19: Processing Plant
Processing Plant Mill throughput of 0.5 Mtpa with suspension of open pit. Max throughput of 0.9 Mtpa (underground ore), 1.3 Mtpa for open pit ore only. Crushing, grinding, fine grinding, carbon-in- pulp, elution, electro winning, and smelting Achieving overall recoveries > 90% in 2015 in line with h
Slide 20: Process Flowsheet
Process Flowsheet Grinding SAG and Ball mills grind ore to p80 <70 microns. Leaching and Adsorption Weak cyanide solution dissolves gold and silver that is passed into six adsorption tanks. Elution and Electrowinning Loaded carbon washed and gold and silver is won onto steel cathodes. Bullion Produc
Slide 21: 2015 YTD Physicals
2015 YTD Physicals UG Ore Mined 60 14 50 12 40 10 8 g/t 30 kt 6 20 4 10 2 0 0 Ore Processed 120 14 100 12 Tonnes Grade 80 10 8 g/t 60 kt 6 40 4 20 2 Open Pit Ore Mined 0 0 100 5 80 4 60 3 Tonnes Head grade g/t kt 40 2 20 1 0 0 Tonnes Grade 21 OceanaGold Corporation Innovation Performance Growth
Slide 22: Opportunities and Growth: Opportunities
Opportunities and Growth: Opportunities Opportunity Action Plan Operational improvements • UG owner-mining • UG crib room and fibre optic • Review COG strategy; reduce COG if economic • Review of property divestment strategy • Supply pricing synergies • Processing study to optimise costs (eg campaig
Slide 23: Waihi Geology
Waihi Geology Low sulphidation epithermal gold & silver deposits in quartz veins within andesitic to ryholitic volcanics Main ore minerals are electrum & silver sulphides with minor pyrite Generally steep dipping veins which splay upwards to narrower hanging wall vein sets, typically 1-5m wide 23 Oc
Slide 24: Waihi Project Pipeline 2015
Waihi Project Pipeline 2015 Prospect Exploration Mineral Resource Reserve Inventory Inventory Charlie’s Waihi West Rex Grace No 9 Blackhill Correnso Correnso Deeps Edward Extensions Martha East UG Correnso Upper WKP Midway Correnso Quattro WKP Daybreak Sainsbury Box White Bluffs Empire East Martha U
Slide 25: Brownfields Exploration
Brownfields Exploration 14,000 metres of drilling planned 8,000 metres of drilling planned at underground Martha 25 OceanaGold Corporation Innovation Performance Growth
Slide 26: Brownfields Exploration
Brownfields Exploration opportunity 4.7m true @ 18.3g/t Au 4.8m true @ 20.8g/t Au opportunity Pumping infrastructure allows flexibility to go deeper 26 OceanaGold Corporation Innovation Performance Growth
Slide 27: Greenfields Exploration
Greenfields Exploration Dome Field: EP application/s – design and initiate program Ohui: Remodel – target generation for 2017 Twin Hills: Map/sample – access post Treaty Settlement White Bluffs: 500m drilling Glamorgan: Map/sample – access post Treaty Settlement Hauraki: Includes WKP, significant dr
Slide 28: oceanagold.com
oceanagold.com Innovation Performance Growth