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CANADA’S NEXT INTERMEDIATE GOLD PRODUCER

2013 Global Metals, Mining & Steel Conference Bank of America Merrill Lynch May 14-16, 2013, Barcelona

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Forward Looking Information This presentation contains certain forward-looking information as defined in applicable securities laws (referred to herein as “forward-looking statements”). Specifically, this presentation contains forward-looking statements regarding the commencement of commercial production at the Detour Lake mine, 2013 guidance for gold production and total cash costs, reserve and resource estimates, ore grade, expected mine life, average annual gold production, gold recovery, cash operating costs and other costs, sensitivity to metal prices and other sensitivities, ramp-up of operations, mining rates reaching approximately 200,000 tpd by year-end 2013, future operating plans, potential expansion opportunities, and plans for organic growth which includes growing mineral reserves to more than 20 million ounces. Forward-looking statements involve known and unknown risks, uncertainties and other factors which are beyond Detour Gold’s ability to predict or control and may cause Detour Gold’s actual results, performance or achievements to be materially different from any of its future results, performance or achievements expressed or implied by forward-looking statements. These risks, uncertainties and other factors include, but are not limited to, gold price volatility, changes in debt and equity markets, the uncertainties involved in interpreting geological data, increases in costs, environmental compliance and changes in environmental legislation and regulation, interest rate and exchange rate fluctuations, general economic conditions and other risks involved in the gold exploration and development industry, as well as those risk factors discussed in the section entitled “Description of Business - Risk Factors” in Detour Gold’s 2012 AIF and in the continuous disclosure documents filed by Detour Gold on and available on SEDAR at www.sedar.com. Such forward-looking statements are also based on a number of assumptions which may prove to be incorrect, including, but not limited to, assumptions about the following: the availability of financing for exploration and development activities; operating and capital costs; the Company’s ability to attract and retain skilled staff; the mine development schedule; sensitivity to metal prices and other sensitivities; the supply and demand for, and the level and volatility of the price of, gold; timing of the receipt of regulatory and governmental approvals for development projects and other operations; the supply and availability of consumables and services; the exchange rates of the Canadian dollar to the U.S. dollar; energy and fuel costs; the accuracy of reserve and resource estimates and the assumptions on which the reserve and resource estimates are based; market competition; ongoing relations with employees and impacted communities and general business and economic conditions. Accordingly, readers should not place undue reliance on forward-looking statements. The forward-looking statements contained herein are made as of the date hereof, or such other date or dates specified in such statements. Detour Gold undertakes no obligation to update publicly or otherwise revise any forward-looking statements contained herein whether as a result of new information or future events or otherwise, except as may be required by law. If the Company does update one or more forward-looking statements, no inference should be drawn that it will make additional updates with respect to those or other forward-looking statements.

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The mineral reserve and resource estimates reported in this presentation were prepared in accordance with Canadian National Instrument 43-101Standards of Disclosure for Mineral Projects (“NI 43-101”), as required by Canadian securities regulatory authorities. For United States reporting purposes, the United States Securities and Exchange Commission (“SEC”) applies different standards in order to classify mineralization as a reserve. In particular, while the terms “measured,” “indicated” and “inferred” mineral resources are required pursuant to NI 43-101, the SEC does not recognize such terms. Canadian standards differ significantly from the requirements of the SEC. Investors are cautioned not to assume that any part or all of the mineral deposits in these categories constitute or will ever be converted into reserves. In addition, “inferred” mineral resources have a great amount of uncertainty as to their existence and great uncertainty as to their economic and legal feasibility. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to a higher category. Under Canadian securities laws, issuers must not make any disclosure of results of an economic analysis that includes inferred mineral resources, except in rare cases. On September 4, 2012, Detour Gold announced an updated mine production plan for the Detour Lake project. The NI 43-101 compliant Technical Report for this update was filed on SEDAR on October 18, 2012. The following QPs participated in this update: BBA Inc., under the direction of André Allaire, Eng., Vice-President, Markets – Mining and Metals and Patrice Live, Eng., Mining Manager; SGS Canada Inc., under the direction of Michel Dagbert, Eng., Senior Geostatistician and Maxime Dupéré, P.Geo., Senior Geologist; and AMEC Environment & Infrastructure, a Division of AMEC Americas Limited, David G. Ritchie M.Eng., P.Eng, Senior Associate Geotechnical Engineer.

NI-43 101 Disclosure Information Containing Estimates of Mineral Reserves and Resources

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Focus and Discipline Leverage to gold price Optimize operation Organic growth Safe jurisdiction Per Share Value Creation Free cash flow growth Limit share dilution Return on capital

Invest in Detour Gold Our Vision Become a leading intermediate gold producer and premier investment opportunity

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Note: Cash position and share data at April 30, 2013. Conversion price for the Notes is US$38.50.

Share Capital

FULLY DILUTED 139.9 M

OPTIONS & FN SHARE COMMITMENTS

9.0 M CONVERTIBLE

NOTES 13.0 M

ISSUED AND OUTSTANDING

117.9M C$1.4 B

C$128 M

TOP SHAREHOLDERS

MARKET CAP

CASH POSITION

PAULSON & CO: 15% INSTITUTIONS TOTAL: >80%

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Focused on One Core Asset Detour Lake - Ontario, Canada Low-risk, safe mining jurisdiction Large prospective land package of 566 km2 on Abitibi Greenstone Belt

› Detour Lake open pit mine – 15.6 M oz in reserves › Significant potential to expand mineral resources › Exploration upside

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PRODUCTION 2013

Record Timing from “Discovery” to Production

Detour Lake in 6 years

ACQUISITION /DISCOVERY

PRE-FEASIBILITY STUDY

FEASIBILITY STUDY & PERMITTING

DEVELOPMENT PRODUCTION

2007 2009 2010 2011-12 2013

From Core to Pour

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Scorecard Highlights

Delivered results in timely manner over last 6 years Built strong management team with track record of success Increased mineral resources by 750% since acquisition at <$5/oz Completed positive economic studies over a 2-year period Raised over $2 billion (equity + debt) Completed mine construction on time (27 months) Obtained strong community and Aboriginal support Started gold production in Q1 2013

Focus Q3 Q4

Strategy: Execution Discipline

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H1 2013 First gold pour in February Secured $90 million credit facility Commissioned second production line 25,000 m drilling program targeting high-grade

gold mineralization H2 2013 Achieving commercial production in Q3 Gold production target of between 260,000 and

320,000 ounces for the year Year-end mineral resources/reserves update

2013 Objectives

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Focus on health and safety of our employees, the well-being of our community and the protection of the natural environment Hiring in the region, giving priority to local Aboriginal communities:

95% of workforce from region 28% are Aboriginals Scholarship and job training

Supporting local communities Business opportunities Participation in municipal development Corporate philanthropy

NORTHERN ONTARIO

44%

COCHRANE 25%

COCHRANE AREA

26% REST OF ONTARIO

3%

2% OTHER

Corporate Responsibility

WORKFORCE ORIGIN

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OP reserves (M oz) 15.6

Mill throughput (tpd) 55,000

Strip ratio (waste:ore) 3.7

Gold recoveries 91%

Average grade (g/t) 1.03

Estimated mine life (yrs) 21.5

Avg. production (oz/yr) 657,000

Initial capex (C$ B) 1.5

Sustaining capex (C$ B) 1.2

Detour Lake Mine at a Glance

Gold production started in February 2013

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MAINTENANCE

LABOUR POWER

DIESEL

G&A

ROYALTY+ OTHER

(2% NSR)

CONSUMABLES 29%

22%

18% 12%

8% 5%

6%

Breakdown of 2013-14 TCC Operating Costs (LOM) C$/t milled C$/t mined C$/oz

Mining costs 11.65 2.49 388

Processing cost 7.83 -- 260

G&A 1.86 -- 62

Cash operating costs 21.34 -- 710 Royalty (2%) and other 1.26 -- 42

Refining 0.12 -- 4

Silver credit (0.20) -- (7)

Total cash costs (TCC) 22.52 -- 749

A 10% change in: Diesel or power costs = $9/oz change in TCC Cdn$ FX rate = $63/oz in TCC

Projected LOM Operating Costs

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2013 Ramp Up Mining Current stockpiles:

2.6 Mt grading 0.7 g/t 1.6 Mt grading 0.4 g/t

Mining rates to ~200,000 tpd by year-end

Mining fleet of 20 haul trucks & 4 shovels

Processing Plant 55,000 tpd conventional gravity and

CIP processing plant with two production lines

Line 1 & 2 in operation Optimize and improve efficiencies

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PLANT SITE

CAMPBELL PIT

APPROX. PIT SHELL AT END OF LOM

CURRENT PIT SHAPE

MINERALIZED ZONE

Satellite image dated July 2012

NORTH WASTE DUMP

Mining Production

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Bench 6252m

Bench 6240m

Grade Control DDH Block model 40x40m drill spacing RC GC 20X10m & 10X10m drill spacing

Block Gold Grade (g/t)

< 0.3 < 0.5 < 0.8 < 2.0 > = 2.0

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Q1 2013

Ore tonnes mined (Mt) 1.29

Tonnes milled (Mt) 1.02

Mill grade (g/t Au) 0.64

Recovery (%) 80

Availability (%) (1) 66

Gold produced (oz) (2) 16,841

Q1 Operation Statistics

(1) Quarterly period starting on January 12 with first production line and on March 9 with second production line. Availability averaged 70% for both production lines in the last week of March.

(2) 7,300 oz poured and 9,541 oz of plant inventory.

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2013 Guidance 2013 Revised Guidance Total gold production of 260,000 to

320,000 oz Post commercial production (Q3):

Total cash costs of C$800 to C$1,000/oz

Sustaining capital: C$180 M ($45 M incurred in Q1)

Commercial production target in Q3

NOTE: Commercial production to be declared after 60 consecutive days of operating at >75% of throughput (55,000 tpd x 75% = 41,250 tpd)

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Conventional Milling Process

Primary Crusher 90,000 tpd

Mine Trucks

Secondary Crushers (2) 67,000 tpd Pebble Crushers (2) 73,000 tpd

To Market

Gold Doré Bars

Gold Furnace

Gold Electrowinning

Carbon Stripping

To Gravity Circuit

To Gravity Circuit

Stockpile SAG Mills (2) 55,000 tpd

Ball Mills (2) 55,000 tpd

CIP

Leach

Tailings

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Grow reserve base to +20 M oz Reserve/resource update for

Detour Lake mine Evaluate Detour Lake mine

expansion and Block A Large prospective land position of

566 km2

Tested gold targets on structures south of Detour Lake: 25,000 m completed (partial results received)

Inferred M&I P&P

10M oz

20M oz

30M oz

15.6 14.9

11.4

8.8

Organic Growth Opportunities

20 *Note: Excludes drilling around Detour Lake and M zone (Block A).

25,000 m in 2013

15.6 M oz in Reserves

Organic Growth Opportunities

Exploration South Structure

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Near-term objectives (1-3 years): Detour Lake reserve/resource update (open pit west expansion) Evaluation of potential expansion options

Organic Growth Opportunities

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25,000 m in 2013

15.6 M oz in Reserves

20.1g/t/4.5m

Organic Growth Opportunities

Exploration South Structure

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Focus and Discipline Leverage to gold price Optimize operation Organic growth Safe jurisdiction Per Share Value Creation Free cash flow growth Limit share dilution Return on capital

Invest in Detour Gold Our Vision Become a leading intermediate gold producer and premier investment opportunity

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ADDITIONAL INFORMATION

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Detour Lake Profile Detour Lake Sept. 2012

Mine Plan(3)

Gold price (US$/oz) (1) 1,200

Foreign exchange rate (US$/Cdn$) 1.00

Assumptions Fuel price (US$/barrel) 100

Income/mining tax rate (%) 25/10

Net Smelter Royalty (%) 2

Ore milled (Mt) 470.0

Waste mined (Mt) (4) 1,734

Mine Strip ratio (waste:ore) 3.7

Parameters Avg. gold grade (g/t) 1.03

Total contained gold (M oz) 15.6

Estimated gold recovery (%) 91.0

Total recovered gold (M oz) 14.1

Mine life (years) 21.5

Avg. annual gold production (oz) 657,000

1. US$1,600/oz for 2013, US$1,500/oz for 2014, and US$1,400/oz for 2015. 2. Press release Jan. 31, 2011 with Technical Report dated Mar. 15, 2011. 3. Press release Sept. 4, 2012 with Technical Report dated Oct. 18, 2012. 4. Includes low-grade stockpile.

1.0 g/t Au

0.5 - 1.0 g/t Au

<0.5 g/t Au

20,600E

16,500E

700 m

Open pit @ 0.5 g/t cut-off

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800

700

600

500

400

300

200

100

0

Gold Production (‘000 oz)

900

850

800

750

700

650

600

550

500

Total Cash Costs (C$/oz)

Gold Production/Cost/Grade Profile

Note: Excludes stripping adjustments.

Avg. C$749/oz

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

Grade (g/t Au) Avg. 657,000 oz/yr

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@ US$850/oz Tonnes (millions)

Grade (g/t)

Contained Gold (‘000 oz)

Reserves (1)

Proven 101.6 1.29 4,222

Probable 368.4 0.96 11,351

P&P 470.0 1.03 15,573 Resources (2)

Measured 124.5 1.36 5,424

Indicated 554.3 1.00 17,836

M&I 678.8 1.07 23,261 Inferred 208.5 0.86 5,785

1. After a 95% mining recovery rate; Mining dilution factor of 15.5%. 2. Inclusive of mineral reserves.

Detour Lake Reserves & Resources As at December 31, 2011

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2012 completed DH Historical DH

Block A near-surface resource

Detour Lake 2011 year-end reserves = 15.6 M oz DH included in 2011 year-end

reserves DH not included in 2011 year-end reserves

Detour Lake & Block A

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Gerald Panneton Founder, President & CEO Director Michael Kenyon Executive Chairman Paul Martin CFO Pierre Beaudoin Chief Operating Officer Julie Galloway Sr VP General Counsel & Corporate Secretary Derek Teevan Sr VP Corporate & Aboriginal Affairs

Pat Donovan VP Corporate Development James Mavor VP Finance Rachel Pineault VP HR & Northern Affairs James Robertson VP Environment & Sustainability Eric Josipovic Controller Drew Anwyll MGM/Director of Operations Andrew Croal Director Technical Services

Laurie Gaborit Director Investor Relations Jean-Francois Metail Director Reserves and Resources Greg Miazga Director Construction & Engineering Bill Snelling Director Corporate Systems & Controls Christian Brousseau Process Plant Construction Manager Charles Hennessey Deputy General Manager/Process

Plant Manager Patrik Gillerstedt Mine Manager

Peter Crossgrove Louis Dionne Robert E. Doyle André Falzon

Gerald Panneton Jonathan Rubenstein Graham Wozniak

Ingrid Hibbard Michael Kenyon Alex G. Morrison

Management & Directors Management

Directors

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Gerald Panneton President & CEO Email: gpanneton@detourgold.com Phone: 416.304.0800

Laurie Gaborit Director Investor Relations Email: lgaborit@detourgold.com Phone: 416.304.0800

www.detourgold.com

Contact Information