1

CANADA’S INTERMEDIATE GOLD PRODUCER

21st Annual Canada Mining Conference

Bank of America Merrill Lynch

Toronto – September 10-11, 2015

2

Forward Looking Information This presentation contains certain forward-looking information and statements as defined in applicable securities law (referred to herein as

“forward-looking statements”). Forward-looking statements include, but are not limited to, statements with respect to 2015 guidance for

production, total cash costs, all-in sustaining costs, capital costs, deferred stripping costs, and exploration costs; expected throughput,

mining and recovery rates; expected future production and mining activities; opportunities to optimize the mine operation; timeline for the

life of mine plan update, and exploration program; and opportunities to optimize the mine operation.

Forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause 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, assumptions and parameters underlying the

life of mine update not being realized, a decrease in the future gold price, discrepancies between actual and estimated production, changes

in costs (including labour, supplies, fuel and equipment), changes to tax rates; environmental compliance and changes in environmental

legislation and regulation, 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 2014 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 sustaining capital

costs; the Company’s ability to attract and retain skilled staff; sensitivity to metal prices and other sensitivities; the supply and demand for,

and the level and volatility of the price of, gold; 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.

All forward-looking statements in this presentation are necessarily based on opinions and estimates made as of the date such statements

are made and are subject to important risk factors and uncertainties, many of which cannot be controlled or predicted. Detour Gold and the

Qualified Persons who authored the associated Technical Report undertake 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.

3

Notes to Investors

The scientific and technical content of this presentation was reviewed, verified and approved by Drew Anwyll, P.Eng., Senior Vice President Technical

Services, and exploration results was reviewed, verified and approved by Guy MacGillivray, P.Geo., Exploration Manager , both Qualified Person as

defined by Canadian Securities Administrators National Instrument 43-101 “Standards of Disclosure for Mineral Projects”.

Qualified Persons

Non-IFRS Financial Performance Measures The Company has included non-IFRS measures in this presentation: total cash costs, all-in sustaining costs, adjusted net loss and adjusted net loss per

share. The Company believes that these measures, in addition to conventional measures prepared in accordance with IFRS, provide investors an improved

ability to evaluate the underlying performance of the Company. The non-IFRS measures are intended to provide additional information and should not be

considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS. These measures do not have any standardized

meaning prescribed under IFRS, and therefore may not be comparable to other issuers. Other companies may calculate these measure differently.

Detour Gold reports total cash costs on a sales basis. Total cash costs include production costs such as mining, processing, refining and site

administration, less non-cash share-based compensation and net of silver sales divided by gold ounces sold to arrive at total cash costs per gold ounce

sold. The measure also includes other mine related costs incurred such as mine standby costs and current inventory write downs. Production costs are

exclusive of depreciation and depletion. Production costs include the costs associated with providing the royalty in kind ounces.

Commencing in 2015, the Company adopted all-in sustaining costs on a prospective basis. The Company believes this measure more fully defines the total

costs associated with producing gold. The Company calculates all-in sustaining costs as the sum of total cash costs (as described above), share-based

compensation, corporate general and administrative expense, exploration and evaluation expenses that are sustaining in nature, reclamation cost

accretion, sustaining capital including deferred stripping, and realized gains and losses on hedges due to operating and capital costs, all divided by the gold

ounces sold to arrive at a per ounce figure.

Costs excluded from all-in sustaining costs are non-sustaining capital expenditures and exploration costs that are expected to materially increase

production, financing costs and tax expense. Consequently, this measure is not representative of all of the Company’s cash expenditures. In addition, the

calculation of all-in sustaining costs does not include depreciation and depletion expense as it does not reflect the impact of expenditures incurred in prior

periods.

Adjusted net earnings (loss) and adjusted basic earnings (loss) per share are used by management and investors to measure the underlying operating

performance of the Company. Presenting these measures from period to period helps management and investors evaluate earnings trends more readily in

comparison with results from prior periods. Adjusted net earnings (loss) is defined as net earnings (loss) adjusted to exclude specific items that are

significant, but not reflective of the underlying operations of the Company, including: fair value change of the convertible notes, the impact of foreign

exchange gains and losses, including the foreign exchange on deferred income and mining taxes, non-cash unrealized gains and losses on derivative

instruments, accretion on convertible notes, unwinding of discount on decommissioning and restoration provisions, impairment provisions and reversals

thereof, and other non-recurring items. Adjusted basic net earnings (loss) per share is calculated using the weighted average number of shares outstanding

under the basic method of loss per share as determined under IFRS.

4

Unique Investment Opportunity

Mining-friendly Jurisdiction

Large-scale, long mine life

Largest gold producing mine not

controlled by a senior producer

Growing cash flow profile

Production growth opportunities

Favourable exposure to

Canadian Dollar

DOMINANT

GOLD PRODUCER

IN CANADA

5

2015 Production Guidance (Koz)

#2 in Production and #1 in Reserves

DGC Detour Lake

AEM/YRI Canadian

Malartic

AEM Meadowbank

G Red Lake

Canadian Intermediate Gold Producer

400-

425

560 475-

525 400

Gold Reserves (Moz)

DGC Detour Lake

AEM/YRI Canadian

Malartic

AEM Meadowbank

G Red Lake

2.1

15.0

8.7

1.2

6

2015 Drivers to Success

Execution of Plan

Gold production increase with higher

mining and milling rates

Strengthen balance sheet

Added Benefits

Significant leverage to gold price and

Canadian dollar

Low power and favourable diesel costs

Near to Long-Term Value Enhancements

Plant optimization (with limited capital)

Development of Block A

Exploration potential

7

2015 Guidance1

TCC2

$780-

$850

AISC/oz sold2

$1,050-$1,150

Capital Expenditures

Sustaining capital: US$90-100 M

475,000 -

525,000

Gold ounces

ESTIMATED

COSTS

ESTIMATED

PRODUCTION

Deferred stripping: US$20-25 M

1. Cost assumptions (US$): Gold price of $1,200/oz, diesel fuel price of $0.82 per litre; power cost of $0.04 per kilowatt hour; and

exchange rate of $1.00US:$1.15Cdn.

2. Refer to the section on Non-IFRS Performance Measures on slide 3 of this presentation.

2015 third year

of operation

8

H1 2015 – Solid Progress

106 125

$1,321

$1,030

$750

$850

$950

$1,050

$1,150

$1,250

$1,350

0

20

40

60

80

100

120

140

H1 2015: Detour Lake Mine

■ AISC (US$/oz sold)1

■ Gold Production (k oz)

Q1 Q2

1. Refer to the section on Non-IFRS Performance Measures on slide 3 of this presentation. Reconciliation and adjustment of this measure

is described in the MD&A for Q2’15.

H1 2015 Highlights:

Gold production of 230,920 oz at TCC

of $828/oz sold and AISC of $1,163/oz

sold

Break-even cash flow position

Positive amendments to credit facility

of C$135 M

Cash position of US$133 M at June 30

H2 2015 Expectations:

Stronger operational performance

Encouraging results from Lower Detour

30,000 m drilling program

9

Continued positive progress on drilling rates, blasted inventory,

and shovel productivity

Mining rates averaged 280,000 tpd, exceeding budget by 18%

220

280

170

190

210

230

250

270

290

310

Q1A Q2A H2EQ1 Q2 Mining Rates (k tpd)

Q2 2015 Operating Results – Mine

H1 Achieved H2 Target:

250-290 k tpd

H

L

10

Successful re-build of ROM stockpiles

at Q2 end (1.7 Mt @ 0.71 g/t) provides

operational flexibility for H2 2015:

Focus on delivering higher grade to mill

Accelerate Phase 2 pre-stripping

On target for east end pit access to

higher grade (former Campbell pit area)

Maximize TMA placement efficiency

(using CAT795 trucks)

H2 2015 Mine Plan Focus

Targeting 250,000

to 290,000 tpd for

remainder of 2015

11

Throughput rate of 57,015 tpd

At design capacity since March

Milling rates at 2,712 tpoh with operating time improving to 88%

Exceeding design of 2,500 tpoh

48

57 55*

30

40

50

60

Q1'15 Q2'15 H2E

Q2 2015 Operating Results - Mill

2015 Mill Throughput (k tpd)

MT ore milled

0.82 G/T AU

head grade

% gold recovery

5.2

91

Q2’15 Performance

Q1 Q2

* Excluding the processing of fines

12

H2 2015 Focus – Mill

H2 Focus

Continue plant optimization efforts

Assess robustness of 410-conveyor

Increase operating time to >90%

Increase milling rate to 2,800 tpoh

with ‘fines’

Processing of fines in month of July;

test to continue in Q4

Targeting average throughput rate of

55,000 tpd for H2 2015

MT ore milled

0.86 G/T AU head grade

% gold recovery

19.7

91.5

2015 Mine Plan Targets

13

$954 $955 $886

$939

$734

Q2'14 Q3'14 Q4'14 Q1'15 Q2'15

Q2 2015 Operating Costs

Significant cost reduction

per ounce & tonne due to

economies of scale

Continued reduction of

plant consumables

TCC & AISC1,2 ($/oz sold)

Trending down

Q2’15

$1,321

$1,030

1. Refer to the section on Non-IFRS Performance Measures on slide 3. Reconciliation of these measures is described in the MD&A for the

relevant periods.

2. The calculation for TCC and AISC (non-IFRS measures) and processing unit costs, including prior periods, were adjusted

to allocate the electricity adjustment into the appropriate historical period to which the cost applied.

Refer to slide 24 and MD&A for Q2’15.

Q1’15 Q2’15 2015E

Mining (C$/t mined) $3.16 $2.42 $2.60

Processing2 (C$/t milled) $11.78 $8.81 $9.87

G&A (C$/t milled) $3.89 $2.72 $3.05

Total Cash Costs1

Other (Sustaining capital, G&A and exploration)

14

1. Includes US$2.0 M NAC settlement payment.

Q2 Sustaining Capital

Mine

$30 M

TMA

$34 M

Other

$13 M

Mill

$9 M

Water Management

$10 M

14

Q2 2015 Capital Expenditures

Q1’15 Q2’15 2015E

Sustaining Capital $19.8 M $25.8 M $90-100 M

Capitalized Stripping $10.0 M - $20-25 M

Total (US$) $29.8 M $25.8 M $110-125 M

Breakdown of 2015 Sustaining

Capital (US$)

~90% of costs in Cdn$

Mine $7.5 M

Mill $5.2 M

TMA $6.5 M

Other $6.6 M1

15

Benefiting from a Weak Cdn $

$1,000

$1,100

$1,200

$1,300

$1,400

$1,500

Budget 2015 1-Jan-15 8-Sep-15

$Cdn $US

Gold Performance

YTD

$Cdn: +8%

$US: -5%

$/oz

FX rate 1.15 1.16 1.32

YTD 2015 Gold Price

in US Dollars vs Canadian Dollars

$1,380 $1,372

$1,479

$1,200 $1,182

$1,121

16

Prudent Financial Management

Hedge up to 50% of 2015 Gold Production

Forward sales on 35,000 oz @ US$1,276/oz

Currency Exchange Contracts

Zero-cost collars for US$40 M with a ceiling

of 1.21; Forward contracts for US$40 M at

average 1.26

Hedge ~50% of Next 3 Months’ Diesel Use

Purchasing diesel product (~6 M litres) at

effective hedge price of US$0.46/litre

As at June 30, 2015:

Mark-to-market value of US$3 M

No addition to

hedging programs in

Q2’15

17

Optimize capital vs mine output (at gold price of US$1,200/oz

long-term)

Evaluate production ranging from 110 to 140 Mt annually

(equivalent to mining rates of 300,000 to 385,000 tpd)

Include Block A as a second feed source (at earliest 2018)

Evaluate the use of Block A pit as waste rock dump and TMA cell

Evaluate the inclusion of enriched low-grade stockpile (fines) in

mineral reserves (2nd test underway)

LOM Plan Update – EOY Target

Goal: Maximize Returns for Next 5-10 yrs and Optimize NAV

18

Processing of Fines

Segregation of fines:

Gold concentrates in the finer

material

Segregation of fines allows for:

› better grade

› faster processing rates

First Test in Fall 2014:

Positive results from first

200,000 tonnes test

› grade of 0.62 g/t = 41%

higher than avg. grade of SP

› processed at 68,000 tpd

Low-grade stockpile (avg. grade 0.44 g/t)

Natural segregation of fines

from unloading truck

19

Second Test in Q3-Q4 2015:

Fines processed in July

and continuing in Q4

Tonnage up to 4,000 tpd

Validate milling rate

improvement

If results are successful:

Incorporate into LOM plan

› Potential for +20,000 oz/yr at very low cost

Processing of Fines

X No

fines

With

fines

Projected model

Plant

throughput 55,000 54,000

Loss of 1,000 tpd

of capacity

Added

throughput 0 4,000 Gain of 4,000 tpd

Total 55,000 58,000 Net gain of 3,000 tpd

20

Drilling program started at end of June

17,900 metres in 45 holes completed as of September 6

All holes have intersected the targeted mineralized zones

Majority of holes encountered visible gold

Further targets identified from Magnetic & IP surveys east of

Lower Detour trend

Budget increased to approximately US$8 million

Exploration – Lower Detour

30,000 m drilling program underway

21

PRODUCTION GROWTH /

DECLINING UNIT COSTS

REALIZE VALUE-ENHANCING

OPPORTUNITIES

MATERIAL INPUTS TRENDING

FAVOURABLY

GROWING CASH FLOW

A GREAT TIME TO BE A

GOLD PRODUCER!

22

ADDITIONAL information

2015 Safety Performance

Q2 2015 Operational & Financial

Summary

Detour Gold Reserves &

Resources

Detour Lake & Block A

Lower Detour Exploration

Shareholder Information

Analyst Coverage

Cautionary Statement

Management & Directors

Contact Information

23

3.9

2.5 2.8

0

0.5

1

1.5

2

2.5

3

3.5

4

2014 ON

Average2

Zero Harm is Our Goal

Total Recordable Injury

Frequency Rate1

2015 Safety Performance

H1 2015 2014

H1 2015

TRIFR at 2.8 with

Q2 higher than Q1

2015 Initiatives

Safety Leadership

for Safe Production

Life Saving Rules

1. Total recordable injury frequency rates = number of recorded injuries per 200,000 hours worked.

2. 2014 Ontario Mining Industry average (source: Workplace Safety North, WSIB).

24

Q2 2015 Operational Statistics

Q2’14 Q3’14 Q4’14 Q1’15 Q2’15

Ore mined (Mt) 2.89 4.20 4.30 3.82 6.37

Waste mined (Mt) 16.11 14.71 15.39 15.97 19.08

Total mined (Mt) 19.00 18.91 19.69 19.79 25.45

Strip ratio (waste:ore) 5.6 3.5 3.6 4.2 3.0

Mining rate (tpd) 209,000 206,000 214,000 220,000 280,000

Ore milled (Mt) 4.42 4.53 4.71 4.30 5.19

Mill grade (g/t Au) 0.91 0.88 0.85 0.84 0.82

Recovery (%) 91 90 91 91 91

Mill throughput (tpd) 48,569 49,186 51,142 47,797 57,015

Mill operating time (%) 83 81 83 78 88

Ounces produced (oz) 117,366 115,344 116,770 105,572 125,348

Ounces sold (oz) 107,206 106,334 124,913 104,497 123,296

25

Q2 2015 Financial Summary

Key Financial Statistics (US$ M, unless noted)

Q2’15

Metal sales $147.5

Production costs ($100.2)

Depreciation & depletion ($39.8)

Earnings from mine operations $7.5

Net loss/adjusted net earnings1 ($15.4) / 0.5

Net loss/adjusted basic earnings

per share1 ($0.09) / $0.00

Cash & short-term investments $133.2

1. Refer to the section on Non-IFRS Financial Performance Measures on slide 3 of this presentation.

Note: The Company has been notified by the Independent Electricity System Operator (“IESO”) of an adjustment to its electricity rebate

for the period between January 2013 and April 2015, which has resulted in an additional electricity cost of US$12.5 million (refer to Note 6i

in second quarter 2015 financial statements). The balance is payable in 20 equal monthly instalments starting in Q3 2015. As per its

contract with IESO, the Company pays a maximum of C$0.05/kWh until December 2019. The Company has filed for a three-year

extension of the contact.

Refer to the MD&A for Q2’15.

26

Effective December 31, 2014 Tonnes (Mt) Grade (g/t Au) Contained Gold (koz)

Reserves

(1,2,3,4,5)

Detour Lake Mine Proven 94.2 1.25 3,795

Probable 364.6 0.95 11,146

P&P 458.8 1.01 14,941

Stockpiles 0.7 0.74 16

Total P&P 459.4 1.01 14,957

Resources (1,3,4,5)

Detour Lake Mine Measured (M) 16.4 1.37 725

Indicated (I) 65.9 1.01 2,150

M+I 82.4 1.09 2,874

Block A Measured (M) 1.5 1.21 57

Indicated (I) 52.5 1.15 1,934

M+I 53.9 1.15 1,991

Total M+I 136.3 1.11 4,866

Detour Lake Mine Inferred 19.1 0.75 463

Block A Inferred 2.5 1.23 99

Total Inferred 21.6 0.81 562

Detour Gold: Reserves & Resources

1. Mineral reserves calculated using a gold price of US$1,000/oz; mineral resources calculated using US$1,200/oz. Foreign exchange

rate of C$1.03 to US$1.00 (refer to the “Detour Lake Mine NI 43-101 Technical Report dated February 4, 2014).

2. Mineral reserves estimated using a 4% dilution at 0.20 g/t Au and 5% ore loss.

3. Based on an elevated cut-off grade of 0.5 g/t Au for Detour Lake and cut-off grade of 0.6 g/t Au for Block A.

4. Mineral resources are exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated

economic viability. Mineral reserves and resources are compliant with CIM definitions.

5. Totals may not add due to rounding.

27

Detour Lake & Block A

US$1,000/oz

US$1,200/oz

15.5 Moz

@ 1.02 g/t Au P+P

2.0 Moz

@ 1.15 g/t Au M+I

~5.5 km

Current

North

Pit

Note: Mineral reserves and resources as of December 31, 2013. Refer to February 2014 Technical Report.

28

Lower Detour Area

630 km2

Exploration Focus: Lower Detour

Block A

Resource

Detour Lake

OP Mine

29

Lower Detour Phase 1 Drilling Program*

*Phase 1 drilling completed in Q1’15.

30

Lower Detour Phase 1 Drilling Program*

*Phase 1 drilling completed in Q1’15.

31

Lower Detour Phase 1 Drilling Program*

*Phase 1 drilling completed in Q1’15.

32

1. Conversion price for the Notes is US$38.50.

2. Cash and short-term investments at June 30, 2015.

Shareholder Information

Paulson & Co.

>80% INSTITUTIONS TOTAL 8.7 M Share options

13.0 M Convertible notes 1

192.5 M FULLY DILUTED

170.7 M Issued & outstanding

Share Structure (03/31/2014) Top Shareholders

13%

C$2.3

6

BILLION market cap US$133.2

3

MILLION cash position2

Share Structure (August 31, 2015) Top Shareholders

33

Initiating

Research Firm Analyst Target Price at

September 9, 2015

07.06.11 Haywood Kerry Smith $18.50

07.07.09 Paradigm Don Blyth/Don MacLean $18.50

07.08.07 Raymond James Phil Russo $15.00

07.11.26 National Bank Steve Parsons $17.50

07.12.20 Macquarie Mike Siperco $17.00

08.01.14 Canaccord Rahul Paul $19.00

08.07.14 TD Dan Earle $18.50

08.09.04 RBC Dan Rollins $19.00

08.11.06 BMO NB Brian Quast $16.00

09.06.17 Laurentian Killian Charles $16.40

10.05.19 CIBC World Markets Cosmos Chiu $16.50

10.07.22 Credit Suisse Anita Soni $17.50

13.04.16 Scotiabank Trevor Turnbull $18.00

13.08.14 Desjardins Michael Parkin $18.00

13.11.12 Beacon Securities Michael Curran $15.75

13.12.09 GMP Securities Ian Parkinson $10.20

14.02.06 Cormark Securities Richard Gray/Tyron Breytenbach $20.00

14.04.22 Goldman Sachs Andrew Quail $17.00

14.06.17 Dundee Capital Markets Josh Wolfson Under review

14.09.03 Morgan Stanley Brad Humphrey $16.50

Average target C$17.10

Analyst Coverage (20)

34

Cautionary Statement

Information Containing Estimates of Mineral Reserves and Resources

The mineral reserve and resource estimates reported in this presentation were prepared in accordance with Canadian National Instrument 43-101

Standards 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 February 4, 2014, Detour Gold announced an updated life of mine plan for the Detour Lake mine. The NI 43-101 compliant Technical Report for this

update was filed on SEDAR on February 4, 2014. The following QPs participated in this update: BBA Inc., under the direction of André Allaire, Eng.,

Acting President and CEO and Patrice Live, Eng., Director Mining; SGS Canada Inc., under the direction of Yann Camus, Eng., Project Engineer, 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 and Geotechnical Engineering Group Manager.

The scientific and technical content of this presentation has been reviewed, verified and approved by Drew Anwyll, P.Eng., Senior Vice President

Technical Services, a Qualified Person as defined by Canadian Securities Administrators National Instrument 43-101 “Standards of Disclosure for

Mineral Projects”.

35

Paul Martin President and CEO

Pierre Beaudoin COO

James Mavor CFO

Drew Anwyll Sr VP Technical Services

Julie Galloway Sr VP General Counsel &

Corporate Secretary

Derek Teevan Sr VP Corporate &

Aboriginal Affairs

Jean-François Métail VP Mineral Resource

Management

Rachel Pineault VP HR & Aboriginal Affairs

Jim Robertson VP Environment &

Sustainability

Charles Hennessey Mine General Manager

Andrew Croal Director Technical Services

Laurie Gaborit Director Investor Relations

Alberto Heredia Controller

Bill Snelling Director Corporate Systems & Controls

Lisa Colnett

Robert E. Doyle

André Falzon

Alex G. Morrison

Jonathan Rubenstein

Graham Wozniak

Ingrid Hibbard

Michael Kenyon

Paul Martin

Management & Directors

Management

Directors

36

James Mavor Chief Financial Officer

Email: jmavor@detourgold.com

Phone: 416.304.0800

Paul Martin President and Chief Executive Officer

Email: pmartin@detourgold.com

Phone: 416.304.0800

www.detourgold.com

Contact Information