Corporate PresentaÇon - Dia Bras Exploration

Corporate Presenta>on July 2012 TSX-­‐V: DIB │ BVL: DIB │ www.diabras.com

Public Market Overview Market Capitaliza7on 1 Share Capitaliza7on Figures in C$ millions, unless noted Share Price (C$) Basic Shares Outstanding (M) Market Capitaliza>on Net Debt & Minority Interest Enterprise Value $2.65 157.2 416.5 67.0 483.5 Basic Shares Outstanding 1 Warrants Outstanding Op>ons Outstanding 2 Restricted Share Units (RSU’s) 2 157,193,995 -­‐ 1,954,605 1,668,400 Fully Diluted Shares Outstanding 160,817,000 Share Price Performance Key Shareholders 3 3 Source: SEDI and ThomsonOne. 20% Shareholder Shares % 10% 0% Arias Resource Capital 81,241,049 51.7% -­‐10% -­‐20% BlackRock Group Ltd. 12,018,900 8.5% -­‐30% -­‐40% Goodman & Co 5,568,464 3.9% -­‐50% 1 As of July 19, 2012. 2 As of July 19, 2012. Dia Bras S&P/TSX Metals and Mining Index www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 5

Financial Posi>on Select Financial Informa7on Figures in C$000 2010 2011 1 Q1-­‐2012 Revenue 19,744 100,664 46,288 EBITDA 922 44,431 25,146 EBITDA Margin 4.7% 44.1% 54.3% Opera7ng Cash Flow (2,620) 38,788 7,472 Capex (13,575) (23,704) (4,307) Op. Cash Flow aZer Capex (16,195) 15,084 3,165 Cash & Equivalents 14,957 20,156 58,454 Assets 68,362 550,598 521,479 Equity 62,308 271,451 266,285 Liquidity Posi7on • C$45 million equity financing completed June 2012 • C$90 million of cash and equivalents as of June 7, 2012 • $25 million of net proceeds 2 from sale of hydroelectric asset in March 2012 • New $10 million revolving credit facility in Mexico • $150 million acquisi>on financing – Repayable over a 5-­‐year term (2016) – Net debt 3 balance of C$14 million 4 resul>ng from accelerated repayment, non-­‐core asset sale and equity financing – $47 million capex expected for 2012 1 Includes Yauricocha figures since May 2011. 2 Net of third-­‐party payments. 3 Consolidated debt minus total cash and cash equivalents. 4 As of June 7, 2012. www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 6

Growth Ini>a>ves Main Projects Project Capex 1 Timing Expected Benefits Organic Growth Peru $29M New 1,000 sham at Yauricocha mine $25M 36 months 15,000 metre explora>on drill programme at Yauricocha Mine $2M 7 months Regional explora>on $2M 12 months Organic Growth Mexico Increase produc>on at Piedras Verdes Mill to 2,000 tpd 14,000 metre explora>on drill programme at Bolivar mine 40,000 metre explora>on drill programme at Cusi and accelerated mine development Refurbish Promontorio sham and expand ramp to depth $31M $6M 13 months $3M 6 months $17M 18 months $1M 8 months Regional explora>on $4M 6 months M&A and Working Capital TOTAL 1 Dollar figures presented in millions (M). $14M $74M Improve and guarantee opera>onal efficiencies and produc>on capacity Increase LOM by expanding addi>onal reserves and resources at depth Advance high-­‐priority regional explora>on targets Increase produc>on, revenue and EBITDA in Mexico Increase LOM by expanding resources along Magne>te-­‐Cu horizon Expand disseminated silver deposit, release NI 43-­‐101 report Increase produc>on at Cusi and advance towards commercial produc>on Advance high-­‐priority regional explora>on targets www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 7

Growth Ini>a>ves Uses and sources of cash Uses Sources Organic Growth Peru $29M Corona’s Cash $29M Organic Growth Mexico $31M Equity Financing $45M M&A and Working Capital $14M TOTAL $74M $74M 1 Dollar figures presented in millions (M). www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 8

Asset Overview Peru Mexico Yauricocha Bolivar Cusi Ownership 81.8% 100% 100% Stage Produc>on Produc>on Advanced Development Metals Ag-­‐Cu-­‐Pb-­‐Zn-­‐Au Cu-­‐Zn-­‐Ag Ag-­‐Pb H1 2012 Produc7on 1,2 Silver: 1,037,138 oz Copper: 4.8M lb Lead: 16.8M lb Zinc: 22.0M lb Gold: 5,901 oz Silver: 96,903 oz Copper: 3.2M lb Zinc: 7.0M lb Silver: 120,911 oz Lead: 0.2M lb Mill Capacity (tpd) 2,500 1,000 expanding to 2,000 650 3 Q1 2012 by-­‐product cash costs Ag $(-­‐26.48)/oz Cu $1.47/lbs N/A 1 Produc>on figures presented in millions (M). 2 Please see Appendix, pg. 20, for a summary of 2011 produc>on. 3 The capacity of Malpaso mill is reduced from 850 to 650 tpd when processing exclusively material from Cusi. www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 9

Peru – Yauricocha Opera>ons Descrip7on Regional Yauricocha Map • Yauricocha produces primarily silver and copper from 3 ore bodies – Products include copper, lead, and zinc concentrates, with high silver and gold contents • In opera>on since 1948 • Despite significant increases in produc>on, reserves and resources 1 inventory has remained rela>vely constant • Completed dam for high grade tailings – Q1 2012 • Update Yauricocha NI 43-­‐101 report – Q3 2012 Summary of Opera7ons Q1 2012 Co-­‐product Cash Costs Silver Copper Lead Zinc Gold $/oz $/lb $/lb $/lb $/oz 9.84 1.12 0.29 0.22 508 1 Please see Appendix, pg. 22, for summary table of NI 43-­‐101 compliant reserves and resources. 2 All figures presented in millions of tonnes (“Mt”). www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 10

Peru – Yauricocha Long Sec>on Deposit Highlights • Comprised of 3 ore bodies that have been mined for 50+ years: – Polymetallic – Ag, Cu, Au, Pb and Zn – Copper – Cu, Ag and Au – Lead Oxides – Pb, Ag and Au • Mining is accomplished by sub-­level caving and overhand cut and fill stoping • Recent explora>on has shown that each ore body is open to depth • A new 1,000 m sham is being built in order to access these lower un-­‐mined areas www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 11

Mexico – Promontorio, Cusi Promontorio Highlights • Undefined upside poten>al • Defined 3 million 1 ounce resource defined in one 25 m wide sec>on Disseminated Project — Cross Sec7on • Disseminated zone being expanded by con>nued drilling • High grade stockwork zones occur at vein intersec>ons Disseminated Project — Plan View Untested lateral step outs 1 In House, non NI 43-­‐101 compliant resource es>mates, assuming 15% dilu>on. Please refer to press release dated November 23, 2011. www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 15

Profitable Opera>ons 93.2 55.3% 70.6 59.0 LTM EBITDA 1 ($M) LTM EBITDA 1 Margin 16 50.1% 46.4% 38.8% 33.8% 21.1% 21.8 18.8 15.5 2 2 Dia Bras Endeavour Fortuna Scorpio Alexco Aurcana Dia Bras Endeavour Fortuna Scorpio Aurcana Alexco 1 Sources: Bloomberg for LTM EBITDA as June 6, 2012. 2 Dia Bras EBITDA and EBITDA margin are pro-­‐forma including the Peruvian Opera>ons from March 31, 2011 to March 31, 2012. www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │

A{rac>ve Opportunity EV / LTM EBITDA 1 27.4x 15.2x 10.3x 8.7x 5.6x 5.2x Aurcana Alexco Endeavour Fortuna Scorpio Dia Bras 2 Market Cap ($M) 3 467.8 305.7 860.2 536.2 164.3 416.5 1 Source: Bloomberg as of June 7, 2012. 2 Dia Bras EBITDA is pro-­‐forma including the Peruvian Opera>ons from March 31, 2011 to March 31, 2012. 3 Source: Toronto Stock Exchange, June 7, 2012. www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 17

Dia Bras Explora>on Premier Silver and Copper Mid-­‐Tier Producer in the Americas • Three producing precious and base metal assets with strong cash flows – Yauricocha (Peru), Bolivar and Cusi (Mexico) – LTM Q1 2012 EBITDA of $93.2 million 1 – Revenue split approximately 60% base metals and 40% precious metals • Well posi7oned for growth – Yauricocha: 15,000 m explora>on drilling for 2012, new 1,000 m sham and new tailings pond to recover high-­‐grade silver and gold – Bolivar: Increase produc>on from 1,000 tpd to 2,000 tpd in 2013 – Cusi: Expand new disseminated silver discovery – Numerous untested explora>on targets surrounding all producing assets due to capital constraints of previous ownership • Opportunity to capitalize on the medium-­‐size La7n American mining industry – Extensive network of connec>ons throughout La>n America – Strong sponsorship by Arias Resource Capital Fund L.P. – Large number of under-­‐explored and under-­‐capitalized opportuni>es 1 Pro-­‐forma including the Peruvian Opera>ons from March 31, 2011 to March 31, 2012 www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 18

TSX-­‐V: DIB BVL: DIB www.diabras.com Appendix

2011 Produc>on Summary Peru 1 Mexico 2 TotalSilver'(oz) 2,071,241 284,624 2,355,865Copper'(000'lb) 13,506 3,112 16,618Lead'(000'lb) 32,575 406 32,981Zinc'(000'lb) 34,294 14,508 48,8021 Includes pro-­‐forma Yauricocha figures from January 1 to December 31, 2011 2 Includes figures for both the Bolivar Mine and Cusi advanced development opera>ons www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 20

Board of Directors Name Steven Dean Chairman J. Alberto Arias Vice-­‐Chairman Douglas Cater Director John S. Donnelly Director Guillermo Kaelin Director Philip Renaud Director Daniel Tellechea Director Descrip7on • Mr. Dean has extensive experience interna>onally in mining, most recently as President of Teck Cominco (now Teck Resources Ltd.) • Prior to Teck, he was a founding member of management of Normandy Poseidon Group, the largest Australian gold producer un>l its sale to Newmont in 2002 • He is also Founder and Chairman of several junior mining companies • Mr. Alberto Arias is the Founder and President of Arias Resource Capital Management LP (ARCM) and has over 15 years of experience in the field of interna>onal mining finance • Prior to founding Arias Resource Capital, he worked for 8 years at Goldman, Sachs & Co. as Head of Equity Research for metals and mining in the U.S., Canada and La>n America, and for 4 years at UBS covering the La>n American metals and mining sector • Mr. Arias has engineering degrees in mining and metallurgy from the Colorado School of Mines, an MBA from Columbia University, mining industry opera>onal experience, and addi>onally holds a patent for a gold mineral processing technology • Mr. Cater has ac>vely prac>ced geoscience for the past 28 years and has worked at numerous opera>ng mines and advanced stage mineral explora>on proper>es throughout Canada, US and Africa • He has held the role of Chief Mine Geologist and Explora>on Manager for several senior-­‐>er mining companies and is currently employed as the Explora>on Manager for Sabina Gold & Silver Corpora>on, a Toronto based mining and explora>on company • Mr. Donnelly is currently Chairman of the Board of Zurich Financial Services in Mexico, member of the board and President of JP Morgan Mexicos Audit Commi{ee and board member of CrediConfia, U-­‐Storage and Paralelo 19, all in Mexico • He has previously served as Country Head of Mexico at Bank of America, Board Member of JP Morgan and Consultant on the integra>on of the merger with Chase Manha{an Bank, Country Manager of Mexico at Chase and Chemical Bank, and partner of Manufacturer Hannovers investment banking JV in Brazil • Mr. Kaelin is a Director at Arias Resource Capital Management LP (ARCM), where he is currently in charge of overseeing the sourcing, execu>on and por}olio management opera>ons of the firm • Prior to joining ARCM, he worked within the Investment Banking Division of JP Morgans Metals & Mining Group in New York, as well as Banco Wiese in both credit officer and senior research analyst roles • He has an MBA from the University of Chicago, an MS in Finance from ESAN (Peru) and a BS in Industrial Engineering from the Universidad de Lima. He is also a board member of Sociedad Minera Corona S.A. in Peru • Mr. Philip Renaud is Managing Director of LB Advisors, a European investment advisory firm involved in private financings and is a graduate of Franklin College of Switzerland with a Bachelor of Arts in interna>onal financial management • Mr. Renaud has been instrumental in securing many private equity financings and has an extensive European and North American network. He currently is the Chairman of Diagnos Inc., Chairman of Kane Biotech and a Director of Yorbeau Resources, and Officer and various private companies • See Management descrip>ons for details www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 21

Management Name Daniel Tellechea President & CEO Fernando Piccini Chief Financial Officer Carlos Villanueva President, Sociedad Minera Corona Armando Alexandri President, Dia Bras Mexicana Herbert Fiedler Chief Commercial Officer Thomas Robyn Head of ExploraAon Descrip7on • Mr. Tellechea received a B.Sc. in accoun>ng (1968) and a Master's Degree in Business Administra>on (1983), both from the Tecnologico de Monterrey in Mexico • From 2003 to 2005, he served as President and CEO of Asarco LLC, and from 1999 to 2003 as CFO of Asarco LLC, as well as VP of Finance for Southern Peru Copper Corpora>on • Previous to that, Mr. Tellechea served as the Managing Director of Finance and Administra>on for Grupo Mexico, Asarco's parent corpora>on, from 1994 to 2003 • Mr. Piccini has a B.Sc. in Business Administra>on from the Universidad de Lima (1997) and a MBA from the University of Virginia (2005) • From 2008 to 2011, he served as Chief Financial Officer and Head of Corporate Development of Volcan Compañía Minera S.A.A. in Peru • He has held various finance and treasury posi>ons with Goldman Sachs & Co. in New York, General Motors Corpora>on in New York, Quimiza Ltda. in Bolivia and Quimica Suiza S.A. in Peru • Since 1984, Mr. Villanueva has served as General Manager of Sociedad Minera Corona S.A., owner of the Yauricocha mine • From 1974 to 1984 he served as superintendent of Compania Minera Santa Rita, previous to that he was mine superintendent of Minas Canarias from 1970 to 1973, and he began his career in 1969 as mine manager at Cobre in Peru • Mr. Villanueva received a geological mine engineering degree from the Universidad Nacional de Ingenieria de Peru in 1968 • Mr. Alexandri received a mining engineering degree from the Universidad de Guanajuato, México (1978) and a degree in Business Administra>on from Universidad de Monterrey (1984) • For the past 8 years, in addi>on to his du>es with Dia Bras, Mr. Alexandri has acted as an independent consultant to several junior miners such as Impact Silver, Holmer Gold Mines and Minera Met. Talpalpa • He has served in many opera>onal roles over the past 33 years within the mining sector • Mr. Fiedler has served as Commercial Manager of the Gubbins Groups mines Sociedad Minera Corona, Compañía Minera Santa Rita, Sociedad Minera Carolina, Minera Yauli and Yauricocha mine from 1991 to 2011. • From 1985 to 1989 he was partner and Commercial Manager of R.G.T. Minerales, one of the first Peruvian traders and commercial representa>ve of Milpo in Peru. He has also held, since 1978, strategic posi>ons in mining and trading companies such as Hochschild Mining, Gerald Metals Inc., Samin Corp. and Sudamin. • Mr. Fiedler studied Business Administra>on in the Universidad de Lima (1978). He also has postgraduate educa>on in Commerce, Nego>a>on, Finance and Stock Market. • Dr. Robyn earned his Ph.D., Geology (1977) from the University of Oregon with a major in Igneous Petrology/Volcanology • He began his career with Anaconda Minerals Company and by 1982 was appointed as Anaconda's regional explora>on manager in Norway • He has also held top-­‐level posi>ons with several junior companies and has overseen projects in such countries as Australia, Ecuador, Greenland, Norway, Liberia, Equatorial Guinea, Guyana and Suriname, as well as several U.S. States www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 22

Peru – Reserves and Resources Yauricocha Mine GradesBody Mt Cu (%) Zn (%) Pb (%) Ag Oz/t Au g/tProven and Probable Reserves 1Polymetalic 645,330 0.60 4.63 2.74 3.49 0.20Copper 284,300 2.22 0.52 0.31 2.30 0.28Lead Oxides 210,400 0.17 1.25 3.84 6.49 2.04Total 1,140,030 0.93 2.98 2.34 3.75 0.56Inidicated Resources 1Polymetallic 2,457,690 0.69 3.71 1.33 1.76 0.33Copper 458,250 1.84 0.58 0.14 1.87 0.24Lead Oxides 966,280 0.44 0.83 9.00 10.28 2.07Total 3,882,220 0.77 2.62 3.10 3.88 0.751 Mineral resources and mineral reserves es>mates, NI 43-­‐101 Technical Report, May 25, 2011. www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 23

Mexico – Resources Bolivar Mine 1 Cusi Project 1,2 Sec7on A Promontorio GradesMt Ag g/t Pb %Block 1 57,500 662 0.31Inferred Res. Indicated ResourcesBlock 2 46,000 125 0.28Block 3 11,500 71 0.14Block 4 57,500 223 0.11Block 5 57,500 252 0.15Block 6 80,500 134 0.10Block 7 17,250 166 0.08Total 327,750 261.00 0.17Estimated Total Contained Silver: 2,750,570 ouncesBlock A 7,187 300 0.90Block B 43,125 122 0.48Total 50,312 147.00 0.54Estimated Total Contained Silver: 237,809 ounces1 In-­‐House, non-­‐NI 43-­‐101 compliant resource es>mates, assuming 10% dilu>on on Bolivar and 15% dilu>on on Cusi. 2 Only based in Sec>on A of Promontorios disseminated area. It doesn‘t include Santa Eduwiges, San Juan, La India and other sec>ons of Promontorio. www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 24

Mexico – Bacerac Property Ag and Au Target Bacerac Property www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 25

Mexico – La Verde Area Ag and Au Target Batopilas Property www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 26

Peru – Chumpe Mill Processing CircuitPolymetallic Ore Body Copper Ore Body Lead Oxide Ore Body Crushing, Screening & Fine Ore Storage Polymetallic Circuit Grinding Lead Oxide Circuit Grinding Cu-­‐Pb Flota7on & Separa7on Zn Flota7on Pb Sulphide Flota7on Pb Oxide Flota7on Thickening & Filtra7on Cu Concentrate Zn Concentrate Pb Sulphide Concentrate Pb Oxide Concentrate www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 27

Malpaso & Piedras Verdes Mills Processing CircuitBolivar Mineralized Material Piedras Verdes Mill Crushing & Milling Cu Flota7on Circuit Zn Flota7on Circuit Thickening & Filtering Cu Concentrate Zn Concentrate Cusi Mineralized Material Cusi Mill Crushing Zn & PB Flota7on Circuits Cyanida7on & Merrill Crowe Thickening & Filtering Zn & Pb Concentrates Ag Doré Bars www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 28

Contact Informa>on INVESTOR RELATIONS Dia Bras Explora>on Inc. Ma{ Morrish Director of Investor Rela>ons Telephone: 1 (866) 493-­‐9646 Info@diabras.com CORPORATE OFFICE 595 Burrard Street, Suite 3083 P.O. Box 49298 Vancouver, BC Canada V7X1L3 Telephone: (778) 375 3128 Fax: (604) 566 9050 LIMA, PERU OFFICE Av. Pedro de Osma 450 Barranco Lima, Peru Telephone: (511) 251-­‐8098 Fax: (511) 467 0590 CHIHUAHUA, MEXICO OFFICE Fernando de Borja No. 100 Col. San Felipe Chihuahua, Chihuahua C.P. 31203 Mexico Telephone: (52) 614-­‐426-­‐0212 Fax: (52) 614-­‐426-­‐6877 www.diabras.com TSX-­‐V:DIB │BVL:DIB DIA BRAS │ 29