Macquarie Australia Conference May 2012 Ian Purdy – Managing Director and Chief Executive Officer Disclaimers Competent Persons The information in this presentation that relates to pre-mining Ore Reserves, Mining Production and Cost Estimation for the Santa Rita Nickel Deposit is based on information compiled by Mr. Carlos Guzmán who is a Member of The Australasian Institute of Mining and Metallurgy. Mr. Guzmán is a Mining Engineer, Principal and Project Director with NCL Brasil Ltda and is a consultant to Mirabela Nickel Limited. Mr. Guzman qualifies as a Competent Person as defined in the 2004 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’ (JORC Code) and is a Qualified Person in accordance with NI 43-101. Mr. Guzmán consents to the inclusion in the presentation of the matters based on his information in the form and context in which it appears. The information in this report that relates to Exploration Results is based on information compiled by Mr Lauritz Barnes who is a consultant to Mirabela Nickel Limited. Mr Lauritz Barnes is a Member of both The Australian Institute of Geoscientists and The Australasian Institute of Mining and Metallurgy. Mr Barnes has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which is being undertaken to qualify as a Competent Person as defined in the 2004 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr Barnes consents to the inclusion in the report of the matters based on the information in the form and context in which it appears. Forward Looking Information Certain information in this presentation, including all statements that are not historical facts, constitutes forward-looking information within the meaning of applicable Canadian securities laws. Such forward-looking information includes, but is not limited to, information which reflect management’s expectations regarding Mirabela’s future growth, results of operations (including, without limitation, future production and capital expenditures), performance (both operational and financial) and business prospects (including the timing and development of new deposits and the success of exploration activities) and opportunities. Often, this information includes words such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or “does not anticipate” or “believes” or variations of such words and phrases or statements that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved. In making and providing the forward-looking information included in this presentation, the Company has made numerous assumptions. These assumptions include among other things: (i) assumptions about the price of nickel and other base metals; (ii) that there are no material delays in the optimisation of operations at the Santa Rita Operation; (iii) assumptions about operating costs and expenditures; (iv) assumptions about future production and recovery; (v) that the supply and demand for nickel develops as expected; (vi) that there is no unanticipated fluctuation in interest rates and foreign exchange rates; and (vii) that there is no material deterioration in general economic conditions. Although management believes that the assumptions made and the expectations represented by such information are reasonable, there can be no assurance that the forward-looking information will prove to be accurate. By its nature, forward-looking information is based on assumptions and involves known and unknown risks, uncertainties and other factors that may cause the Company’s actual results, performance or achievements, or results, to be materially different from future results, performance or achievements expressed or implied by such forward-looking information. Such risks, uncertainties and other factors include among other things the following: (i) decreases in the price of nickel and copper; (ii) the risk that the Company will continue to have negative operating cash flow; (iii) the risk that additional financing will not be obtained as and when required; (iv) material increases in operating costs; (v) adverse fluctuations in foreign exchange rates; (vi) the risk that concentrate produced will not meet certain minimum specifications; (vii) production estimates may not be accurate; (viii) environmental risks and changes in environmental legislation; (ix) failure to comply with restrictions and covenants under the Unsecured Senior Notes; and; (x) changes in the terms of the Leasing Facility in order to achieve successful syndication. The Company’s MD&A and the annual information form contain information on risks, uncertainties and other factors relating to the forward-looking information. Although the Company has attempted to identify factors that would cause actual actions, events or results to differ materially from those disclosed in the forward-looking information, there may be other factors that cause actual results, performances, achievements or events not to be anticipated, estimated or intended. Also, many of the factors are beyond the Company’s control. Accordingly, readers should not place undue reliance on forward-looking information. The Company undertakes no obligation to reissue or update forward-looking information as a result of new information or events after the date of this presentation except as may be required by law. All forward-looking information disclosed in this presentation is qualified by this cautionary statement. 2 Mirabela highlights World class nickel operation with a 22 year reserve life and potential to expand Targeting production of between 19,000 and 21,000 tonnes of nickel in concentrate in 2012, with C1 cash costs expected to move towards US$6.00/lb by year end Mirabela has successfully delivered the Santa Rita project and optimisation has commenced with an aggressive cost reduction program underway Off‐take agreements secured for 100% of concentrate production until end of 2014 Exciting organic growth portfolio Strong management team Excellent safety and environmental record 3 Safety, environment & community Excellent Health & Safety Record Mirabela has achieved an excellent safety record during the ramp‐up of the operation Mirabela is focused on safety training, and the implementation of best practices through the “Zero Accident + Prevention” (ZAP) program 2.0 1.5 1.0 1.40 1.50 1.21 1.23 1.06 1.27 1.05 0.64 1.14 0.85 0.5 ‐ 4Q 09 1Q 10 2Q 10 3Q 10 4Q 10 1Q 11 2Q 11 3Q 11 4Q 11 1Q 12 12 MMA LTIFR (Mirabela + Contractors) Strong Environmental, Government & Community Programs 100% in compliance with all environmental operating requirements Strong government and community engagement Major employer in the region Royalties used for local infrastructure 4 Key achievements in 2011 Achieved production within guidance of 15,854 tonnes of nickel in concentrate – Including record monthly production in December of 2,003 tonnes of contained nickel in concentrate, at 63% recovery Achieved ramp‐up goals in 2011 – Completed mine pre‐strip – Completed the plant upgrade to 7.2 Mtpa on budget – Upgraded the mining and drilling fleet to 40 Mtpa capacity Commenced construction of second primary crushing line and desliming circuit scheduled to be operational in Q2 2012 Strengthened the balance sheet through the issue of US$395 million Senior Unsecured Notes Closed out Mirabela’s legacy project financing, customer financing and all hedge positions Commenced review of operations ahead of current cost reduction program 5 Mirabela has delivered a world class operation in two years Total material mined and ore grade Waste mined (kt) Ore mined (kt) Ore milled, grade processed and nickel recovery Ore milled (kt) Nickel grade (%) Nickel feed grade (%) Nickel recovery (%) 2,000 14,000 0.60% 12,000 0.55% 10,000 0.55% 0.56% 1,693 924 8,000 663 6,000 846 1,774 976 0.48% 0.50% 0.48% 0.49% 4,000 1,000 0.45% 600 400 2,000 4,803 6,436 6,578 8,155 8,067 7,825 8,742 10,166 8,944 ‐ 200 0.40% 1Q10 2Q10 3Q10 4Q10 1Q11 2Q11 3Q11 4Q11 1Q12 56% 55% 0.51% 800 0.43% 58% 1,400 1,200 0.48% 653 0.55% 1,295 60% 60% 1,600 1,997 0.55% 62% 1,800 0.52% 0.52% 0.52% 0.50% 0.48% 52% 778 840 942 1,244 1,070 1,295 1,441 1,567 1,535 1Q10 2Q10 3Q10 4Q10 1Q11 2Q11 3Q11 4Q11 1Q12 0 C1 cash costs (US$/lb Nickel) Cash Cost US$/lb 10 5,155 1.90 8.12 5,000 3,909 3,104 2,505 3,000 BRL/USD Nickel in concentrate sold (t) 6,000 4,000 48% 0.47% 49% 48% Nickel in concentrate produced and sold Nickel in concentrate produced (t) 0.53% 4,228 4,155 8 7.85 7.62 6.76 6.45 6.97 7.42 7.37 6.71 1.80 6 1.70 4 1.60 2 1.50 2,084 2,359 1,987 2,000 1,000 1,991 2,304 2,405 3,676 2,825 3,395 4,605 5,029 4,245 1Q10 2Q10 3Q10 4Q10 1Q11 2Q11 3Q11 0 0 4Q11 1Q12 1.40 1Q10 2Q10 3Q10 4Q10 1Q11 2Q11 3Q11 4Q11 1Q12 6 Overview of March 2012 quarter Production of 4,245 tonnes of nickel in concentrate – Mining material moved of 10.7 million tonnes in accordance with the mine plan – Mining activities focused on establishing a sustainable platform to deliver planned ore feed – Completed update of geological resource model, expected to result in an improved mine plan and reconciliation Average nickel recovery of 58% and average plant nickel feed grade of 0.48% – Nickel recovery on expectation relative to ore quality C1 cash costs of US$7.37/lb – Low grades mined during the quarter impacted production Cost reduction programme underway with organisational restructure removing over 100 staff positions Appointed Anthony Kocken as Corporate Chief Operating Officer – Previously General Mining Manager and Senior Site Executive of Mount Isa Mine (Xstrata Zinc) – Mining engineer with an MBA in Business Administration – Currently based full‐time in Brazil 7 2012 production & cost guidance Production of between 19,000 and 21,000 tonnes of contained nickel in concentrate – Production guidance range reduced by 1,000 tonnes in response to low grades mined during Q1 2012 – Production levels higher in the second half of the year due to ore grade profile, increased plant throughput, and benefits to metal recovery from the desliming circuit C1 cash costs to move towards US$6.00/lb by year end – Primarily driven by expected increase in production through increased mined grade and plant throughput – Cost savings are already starting to show results 2012 capital expenditure budget of US$60 million – US$18.5m spent to 31 March 2012 8 Mine ramp up achieved and now on sequence Total Material Moved 1 Mine ramp up to full production achieved Geological resource model has been updated to include detailed ore zone and faulting information Mine now on sequence to mine plan Mine will be one continuous pit by year end Mt 45 40 35 30 25 20 15 10 5 ‐ Q1 Actual 2009 2010 2011 2012 1: Actuals for 2009, 2010, 2011, Forecast for 2012 (Actual Q1) Mirabela’s 40 Mtpa Open Pit Mining Operation 9 Desliming circuit and primary crusher upgrade operational in Q2 2012 Desliming Circuit Desliming plant start‐up in March 2012 Commissioning and ramp‐up completed in April 2012 Optimisation ongoing during Q2 Performance report to be released with Q2 quarterly results Second Primary Crusher Line (Expected Completion During Q2) 10 Mirabela continues to deliver a high quality concentrate to its offtake partners Norilsk Shipment at Ilheus Port Mantyluoto Port, Finland First nickel concentrate delivery to Votorantim in November 2009 167,091 dmt of concentrate has been delivered to Votoranim First nickel shipment to Norilsk sailed in January 2011 7 ships have been sent to Norilsk totalling 61,268 dmt of concentrate All concentrate sold has been within offtake specifications 11 Mirabela Growth Strategy PHASE 2 PHASE 1 RAMP‐UP & OPTIMISATION Processing Plant Ramp‐Up Mining Ramp‐Up Nickel Recovery Stabilization Build Operating Capability Develop Support Systems Strengthen Balance Sheet Complete Pre‐Stripping 7.2 Mtpa Plant Expansion Desliming Circuit Second Crusher Q2 2012 Mine & Plant Optimization Ongoing OPERATION DELIVERED PHASE 3 SELF‐FUNDED ORGANIC GROWTH EXTERNAL GROWTH 9 Mtpa Open Pit & Plant Expansion ‐ Pre‐feasibility study started ‐ Open‐pit extension drilling program underway ‐ Study completion expected Q1, 2013 Regional Tenement Maintenance ‐ Ongoing Underground Project & Near Mine Exploration ‐ Drilling programs defined ‐ Programs will commence once Company financials improve GROWTH RESTARTED Maintain Independence Base Metal Focus Leverage Strong Brazilian Platform FRAMEWORK DEFINED 12 Exploration drilling has recommenced Schematic Longitudinal Projection Composite results from Pit Extension Drilling (1) Hole ID From (m) MBS‐623 MBS‐624 MBS‐625 (2) MBS‐626 MBS‐629 MBS‐630 MBS‐631 MBS‐632 MBS‐633 MBS‐634 492 519 542 691 635 438 508 608 502 464 Composite down‐hole width (m) 95 42 13 82 45 60 66 49 8 97 Ni% 0.86 0.76 0.53 0.83 0.86 0.68 0.72 0.56 0.54 0.75 Cu% 0.20 0.19 0.16 0.25 0.21 0.19 0.16 0.13 0.18 0.19 Current program consists of 15 drill holes focusing on extension of the Open Pit 10 completed holes to date closely match our resource interpretation Results show the continuation of the ore‐body underneath the North Pit and support the trend of improving widths and grades at depth Full results expected during Q2 Updated In‐pit Resource expected in Q3 (1) 0.4% Ni cut‐off grade, 4m minimum mining width (2) Fault affected – intersected fault in position of expected mineralised zone Note: The standard assay method ME‐ICP61 (four acid digest with an ICP‐AES finish) has been used for all the drill results included in the above table. This method tends to be slightly conservative for results above 0.6% nickel and samples with a result above this are currently being assayed using an ore grade method. All the holes included in the table above will be re‐reported to include the ore‐grade assays with the remaining four holes during the second quarter. 13 Current uncertainty in the nickel market leading to high price volatility Short term softness / Long term shortages Chinese imports of nickel ore (k wmt) Refined Nickel Supply/Demand* (k t) 3000 Indonesian imports underpin Chinese NPI market 150 2500 100 2000 50 1500 0 1000 ‐50 500 ‐100 ‐150 0 2008 2010 Balance 2012 2014 2016 2018 2020 Actual/forecast refined output 2022 2024 Consumption Source: Brook Hunt (A Wood Mackenzie Company) ‐ Nickel Market Service March 2012 NPI cost average between US$8 – US$10 per lb Mid‐term shortage of nickel sulphides projected C1 cash costs for nickel pig iron production (2011$ terms, process averages) Nickel Sulphide Concentrate Demand & Supply Projections Source: Brook Hunt (A Wood Mackenzie Company) 14 Short term pressure on nickel prices; long term shortage projected Short Term Ni Price Pressure Indonesia Supply Risk ‐ Market sentiment appears to be having a disproportionate impact on pricing ‐ Reported plan by Indonesian government to revoke mine export licenses during 2012 ‐ According to Brook Hunt the Ni market is finely balanced (20 kt surplus projected for 2012)1 ‐ Mines need to demonstrate viable plans for attached in country processing to retain license ‐ Price volatility expected due to high level of uncertainty ‐ Indonesia currently underpins the supply of high grade laterite ore to NPI producers Short /MidTerm Oversupply Projections ‐ Remains dependent on the success of HPAL projects (i.e. Goro, Ambatovy, Ramu) ‐ Also dependent on global and China growth prospects , including certainty in European ‐ Potential reduction in higher cost NPI blast furnace production currently 100kt pa Long Term Nickel Shortage Projections ‐ 610kt of yet unidentified new nickel projects required to meet long term demand (11 x Goro’s)1 ‐ Brook Hunt incentive price for these new projects is US$16.5 to 17.5/lb (2011 terms) 1 ‐ Brook Hunt long term nickel price stands at US$13.0/lb (2011 terms) 1 Source: Brook Hunt (A Wood Mackenzie Company) ‐ Nickel Market Service March 2012 15 Conclusions Mirabela has successfully delivered the Santa Rita project and optimisation has commenced with an aggressive cost reduction program underway Mirabela is targeting production of between 19,000 and 21,000 tonnes of nickel in concentrate in 2012, with C1 cash costs expected to move towards US$6.00/lb by year end Organic growth activities continuing with 9Mt feasibility study and a successful exploration program Mirabela is well positioned to take full advantage of a strengthening nickel market 16 APPENDICES Mirabela corporate information ASX Price and Volume 1 May 2012 Share Price (A$) 0.48 52 Week High/Low(A$) 2.20/0.46 Shares Outstanding (mill) 492.6 Market Cap (A$ mill) Source: bigcharts.com, 16 February 2012 234 Cash (US$ mill)* 60 Debt (US$ mill)* 473 Average Volume (50 day) 2,482,167 (MBN:ASX) 695,072 (MNB:TSX) Top Shareholders1 * As at 31 March, 2012 Investor Shares Held % Perpetual Investments 56.6M 11.5 Lancaster Park 50.9M 10.3 Shareholders by Region1 50% 40% 30% Mr Robert Disbrow 32.5M 6.6 Deans Knight Capital Mgt 32.3M 6.5 10% L1 Capital 23.1M 4.7 0% 20% Australia North Central America America 1: Orient Capital Pty. Ltd. as at 30 March 2012 UK Europe (Ex UK) Asia New Zealand 18 Long life world class nickel producer Mirabela Nickel is an international nickel producer World class asset located in a pro‐mining jurisdiction with strong infrastructure 100% owned Santa Rita nickel sulphide mine in Brazil Largest nickel sulphide project commissioned in the last decade Simple, proven open pit mine and conventional sulphide processing plant Project is well situated, with access to grid power, water and logistics Stable political environment with strong economic growth Excellent mining skills, access to service providers and infrastructure Project development from resource drilling to commercial production in 5 years Aratu Port 50km Brazil Brazil Ipiau Salvador Atlantic Ocean Santa Rita Ex‐mine gate to Votorantim’s Fortaleza de Minas smelter, 1,375km by road Ilheus Port CIF Norilsk Harjavalta Smelter, Manty luoto, Finland 19 Substantial reserves and resources – 22 year mine life based on reserves JORC mineral reserves and resources1 Classification2,7 Open‐cut reserves Proven Probable Total Open‐cut resources5,7 Measured Indicated Inferred Total Underground resources6,7 Inferred Tonnes (M) Nickel grade (%)3 Copper grade (%) Recovered Nickel (t)4 16.7 142.6 159.3 0.57% 0.52% 0.52% 0.14% 0.13% 0.13% 64,100 505,700 569,800 16.3 156.0 25.7 198.0 0.57% 0.51% 0.53% 0.52% 0.14% 0.13% 0.14% 0.14% n/a n/a n/a n/a 87.5 0.79% 0.23% 690,0002 ¹ Mineral reserves referred to in this document are reported in accordance with the JORC Code. Mineral resources that are not mineral reserves do not have demonstrated economic viability. Reserves are included in resources. ² Reflects strip ratio of 5.0:1 ³ Contained nickel tonnes of 829,800 4 Weighted average recovery of 68.7% 5 Based on a weighted average cut‐off grade of 0.25% nickel 6 Based on a weighted average cut‐off grade of 0.50% nickel 7 As of December 31, 2010 494 drill holes used in resource calculation totaling 131,695m of drilling Open Pit extension drilling program underway Updated in‐pit resource expected in Q3 2012 Source: Santa Rita Project, Brazil Technical Report (22nd March 2011) 20 Mirabela mobile equipment fleet Front End Loader (x3): ‐ 992K (x1); ‐ 994K (x1); ‐ 994F (x1). Drill Rigs (x12): ‐ Rock L8 (x5); ‐ Pit Viper 271 (x2); ‐ DML45 HP (x5). Dozers (x8): ‐ CAT D9T (x2); ‐ CAT D10T (x2); ‐ Komatsu 375 (x4). Excavators (x7): ‐ O&K RH90‐C (x1); ‐ O&K RH120‐E (x3); ‐ CAT 345D (x1); ‐ Liebherr (x2) (phasing out). Other Graders CAT 16M (x3); Wheel Tractors CAT 834H (x2); Retro excavators 416E; Contractor – 6 trucks plus 2 loaders. Trucks (x18): ‐ CAT 777F (x6); ‐ CAT 785D (x12). 21 Process plant flow sheet Trucking Flotation Circuit Rougher / Scavenger / Cleaner Pebble Crushers Operational Q2 2012 Primary Cyclones Primary Crusher Primary ~80% Crusher passing 250mm ~80% passing Tailings Thickner ~80% passing 125 µm Tailings Concentrate Thickner 250mm Deslime Circuit SAG Mill Ball Mill ~80% passing 125 µm Concentrate Tank Larox Filters Thickener Overflow Water Reservoir Crusher Stock Pile Mill Sump & Pump Nickel Concentrate (13% Nickel, 4.6% Cu, 0.2% Co) 22 Debt and hedging overview Mirabela’s Debt Position: Debt re‐financing ‐ April 2011 US$ mm US$ 395 million bond issue with an 8.75% semi‐annual coupon 400 One bullet payment in April 2018 300 Senior Unsecured Notes Banco Bradesco S.A. facility ‐ January 2012 250 Banco Bradesco Facility 200 Caterpillar Facility − − − − Current maturity profile (US$M) US$ 50 million unsubordinated debt with Interest payable semi‐annually at LIBOR +6% 350 150 Bullet payment in April 2018 Atlas Copco Facility 100 50% of principal due in month 12, and then repayable in equal instalments in months 24, 30 and 35 50 0 2012 2013 2014 2015 2016 2017 2018 Caterpillar Financial Services Corp. facility – March 2009 − 60 month leasing facility with interest paid at US$ LIBOR + COF + 2.75% − Currently US$23 million outstanding Atlas Copco Customer Finance facility – January 2012 − US$ 5.2 million equipment finance facility with interest paid semi‐annually, fixed at 6% − Principal is paid semi‐annually in equal instalments over 36 months. Currently US$4.4 million outstanding Mirabela’s Hedge Position: In 2011 Mirabela closed out all its legacy hedge positions, and is completely unhedged 23