Bank of America Merrill Lynch 18th Annual Canada Mining Conference September 6 and 7, 2012

1. BUILDING
CANADA’S
LARGEST
GOLD MINE
Production Early 2013
Bank of America Merrill Lynch
18th Annual Canada Mining Conference
1 September 6 and 7, 2012
1

2. 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 reserve and
resource estimates, ore grade, expected mine life, anticipated gold production, gold recovery, cash operating costs and other
costs, capital costs, sensitivity to metal prices and other sensitivities, financial analysis of the project, commencement of
operations, potential expansion opportunities, and plans for organic growth. 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
2011 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 supply and demand for gold, and the level and volatility of the price of gold;
the availability of financing for exploration and development activities; the estimated timeline for the development of the Detour
Lake gold project; the expected mine life; anticipated gold production; gold recovery; the development schedule; cash
operating costs and other costs; the financial analysis for the project; capital costs; sensitivity to metal prices and other
sensitivities; the accuracy of reserve and resource estimates and the assumptions on which the reserve and resource
estimates are based; the receipt of necessary permits; 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.
2

3. NI-43 101 Disclosure
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 43-101Standards 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 January 31, 2011, Detour Gold announced an updated mineral resource and reserve estimate. The following QPs
participated in this update: Michel Dagbert, Eng., Senior Geostatistician and André Laferrière, P. Geo., Senior Geologist of
SGS Canada Inc. (mineral resources); and André Allaire, Eng., Director Mining and Metals and Patrice Live, Eng., Mining
Manager of BBA Inc. (mineral reserves). The NI 43-101 compliant Technical Report for this update was filed on SEDAR on
March 15, 2011.
On January 25, 2012, Detour Gold announced a mineral resource and reserve update. The following QPs participated in this
update: Michel Dagbert, Eng., Senior Geostatistician of SGS Canada Inc (mineral resources) and Patrice Live, Eng., Mining
Manager of BBA Inc. (mineral reserves).
On September 4, 2012, Detour Gold announced an updated mine production plan prepared by Patrice Live, Eng., Mining
Manager of BBA Inc. (mineral reserves) with the collaboration Detour Gold Corporation. The NI 43-101 compliant Technical
Report for this update will be filed on SEDAR within 45 days of the press release.
3

4. Invest in Detour Gold
Our Vision
 Focus on a world-class asset – Detour Lake
 Canada’s largest pure gold play with 15.6 M oz in reserves
 Construction progressing on schedule (87% as of August 31)
 One of the best cash flow/share opportunities
 Gold production starting in Q1 2013
 Average annual gold production of 657,000 oz
 Excellent organic growth potential (5 year plan)
 Potential expansion of mill throughput
4

5. Share Capital
OPTIONS & FN SHARE
COMMITMENTS
ISSUED AND 8.9 M
OUTSTANDING
FULLY DILUTED CONVERTIBLE
112.7 M 134.6 M NOTES
13.0 M
 Market cap: C$2.9 billion
 Cash position: C$462 million
 Major shareholders:
 Paulson & Co. 15%
 Fidelity Mgmt 8%
 Detour Gold Mgmt <2%
 Institutions total >90%
Note: Share data and cash position as of July 31, 2012.
5

6. Share Capital
1000%
Share Issuance vs. Performance
900% DGC
08/11
800% 640% total
return since IPO
Jan. 2007 to Present Total Return
700%
DGC
DGC 01/12
600% 07/10
500%
DGC
04/08
400%
Randgold DGC
300% 11/09
DGC
200% 07/09 Eldorado
Osisko
Buenaventura AGI
(239%)
100%
Aurizon G IMG Newcrest
Yamana
IPO NEM
ABX AEM Great Basin
0% Anglo Gold Ashanti Hecla
AuRico (209%)
CG Goldfields Kinross
Gabriel Eco Oro
GSC Andina Source: BMO, Aug. 2012
-100%
0 50 100 150 200
Jan. 2007 to Present % Change in Shares Outstanding
Note: Date of DGC equity financings
6

7. Successful Focused Approach
Record Timing from “Discovery” to Projected Production
Detour Lake in 6 years
2007 2009 2010 2011-12 2013
PRODUCTION
2013
ACQUISITION PRE-FEASIBILITY FEASIBILITY DEVELOPMENT PRODUCTION
/DISCOVERY STUDY STUDY &
PERMITTING
7

8. Detour Gold 2012 Objectives
• Mineral reserves/resources update for 2011 year-end
• Top up of $277 million to complete the project and working capital
• Second 45 km segment of transmission line complete
• 230 kV transmission line connection in Q3
• Phase 1 drilling (49,000m) for Block A pre-feasibility study
 Updated mine plan & operational forecast in Q3
 Commissioning mills in Q4
 Ore stockpile of 2.3 Mt available in Q4 for processing
 Manpower ramp-up to 400 (now 324 employees at site and
Cochrane)
 2012 Year end = 20 haul trucks + 4 shovels
8

9. Growing Reserve/Resource Base
Resource Growth Exceeding 750% Since IPO
Date Accumulative Resources/Reserves (M oz)
DGC Drilling Inferred M&I 2P
10M 20M 30M
2005-05 Estimated by Pelangio
2006-09 DGC due diligence
2007-12 50,000m
2008-06 123,000m
2009-09 249,000m 8.8
2010-06 334,000m $850/oz 11.4
2011-01 430,000m $850/oz 14.9
2012-01 523,000m $850/oz 15.6
9

10. Detour Lake Reserves & Resources
As at December 31, 2011
Tonnes Grade Contained Gold
@ US$850/oz
(millions) (g/t) (‘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.
10

11. Detour Lake Profile
September
Detour Lake 2012 Mine Plan
Open pit
@ 0.5 g/t cut-off 20,600E Production Start Q1 2013
OP Reserves (M oz) 15.6
Mill throughput (tpd) 55,000
Strip Ratio (waste:ore) 3.7
16,500E Gold recoveries 91%
Average grade (g/t) 1.03
Estimated mine life (yrs) 21.5
700 m 1.0 g/t Au
Avg. Production (oz/yr) 657,000
0.5 - 1.0 g/t Au
<0.5 g/t Au Cash operating costs (C$/oz) $710
Total cash costs (C$/oz) $749
Initial Capex (C$ B) 1.45
Note: Gold price assumptions: US$1,600/oz for 2013, US$1,500/oz for 2014, and US$1,400/oz for 2015.
11

12. Updated LOM Gold Production
Gold Production (‘000 oz) Grade (g/t Au)
800 1.6
Avg. 657,000 oz/yr
700 1.4
600 1.2
500 1.0
400 0.8
300 0.6
200 0.4
100 0.2
0 0
12

13. Updated Operating Costs
Breakdown of 2013-14 TCC
Operating Costs (LOM) C$/t milled C$/t mined C$/oz
Mining costs 11.65 2.49 388
LABOUR
Processing cost 7.83 -- 260 18% POWER
G&A 1.86 -- 62
12%
DIESEL
Cash operating costs 21.34 -- 710 MAINTENANCE 8%
Royalty (2%) and other 1.26 -- 42 22% G&A
Refining 0.12 -- 4 5%
Silver credit (0.20) -- (7) CONSUMABLES ROYALTY+
OTHER
Total cash costs (TCC) 22.52 -- 749 29% (2% NSR)
6%
 2013 TCC estimated between C$800/oz and C$900/oz
(on commercial production of 200,000 oz to 250,000 oz sold)
 10% change in diesel or power = $9/oz change in TCC
 10% change in Cdn$ FX rate = $63/oz in TCC
13

14. Capex & Sustaining Capital
Spent PCE
Capital Expenditures (C$ M)
07/31/2012 11/2012
Mining Fleet and Facilities 160 203
Crushing and Processing (P&E) 477 565
Tailings and Water Mgmt 29 65
Infrastructure and Power line 144 156
Other Indirect 174 310
12-08-20
EPCM 85 101
Contingency (10%) - 50
Total (pre-production) 1,070 1,450
 Estimated LOM sustaining capital of C$1.2 billion:
 2013 = C$180 M
 2014 = C$140 M
Note: As of July 31, 2012, the Company has approximately $462 million in cash and short-term investments sufficient to
fully finance the remaining project expenditures ($380 million).
14

15. Financial Analysis
Base Case Assumptions
 Gold - US$1,200/oz (1)  Power Cdn $0.065/kwh
 F/X - $Cdn/$US = 1.00  Diesel US$100/barrel (WTI)
Base Case (1)
US$ Billions Undiscounted (0%) 5.0%
Pre-tax cash flow 4.3 1.7
Net cash flow after tax 3.0 1.1
Pre-tax IRR 14.4%
1. Gold price US$1,600/oz for 2013, US$1,500/oz for 2014, and US$1,400/oz for 2015.
@ US$1,600/oz
US$ Billions Undiscounted (0%) 5.0%
Pre-tax cash flow 9.4 4.4
Net cash flow after tax 6.6 3.0
Pre-tax IRR 24.6%
15
49

16. DETOUR LAKE
DEVELOPMENT
16
Progressing on Schedule

17. Detour Lake: We are on Schedule
Gold Production Projected in Q1 2013
2010 2011 2012 2013
Construction Schedule Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1
Award of Engineering Contract
Award of PCM Contract
Detailed Engineering
Construction Camp (1,200 people)
Power line (Phase 1&2) - Electrification 1 2
Equipment purchase/delivery/assembly
Pre-production stripping
Process Plant - Commissioning start-up
Tailings Dam Construction (first cell)
Provincial Permits/Aboriginal IBAs
Federal Permits
Start production and ramp-up
17

18. Mining is Ramping Up
2012 Pre-Stripping Status (08/31/2012)
Overburden/Till 10.1 Mt
Waste 3.7 Mt
Low Grade 0.4 Mt ORE WASTE
Ore 0.1 Mt
Total 14.3 Mt
Ore ready to be processed 12-08-20
by Q4 2012
 Pre-production capital costs include $78 M for pre-strip activities
 Plan to have 2.3 Mt @ 0.81 g/t stockpiled
 4 crews working on 2 shifts operating 8 haul trucks (CAT 795F) and
2 hydraulic shovels (CAT6060- 34m3 electric and 28 m3 diesel)
18

19. Mining is Ramping Up
NORTH WASTE
MINERALIZED DUMP PLANT SITE
ZONE
CAMPBELL
PIT
CURRENT PIT SHAPE
JULY 2012 APPROX. PIT SHELL
AT END OF 2014
19

20. 2013 Mine Plan
Based on January 2013 Startup
 Total gold production estimate of 407,000 oz (1)
 Pre-commercial production = 144,000 oz
 Commercial production = 250,000 oz (excludes 12,715 oz locked in
circuit load)
 Management guidance:
350,000 to 400,000 oz
 Total cash costs between
C$800/oz and C$900/oz
1. 2013 production of 394,000 ounces of saleable gold plus 12,715 ounces locked in circuit load.
20

21. DETOUR LAKE
21
CONSTRUCTION
Progressing on Schedule

22. Detour Lake Construction Progress
Project Construction 87% Complete (End of August)
• Second 45 km segment of powerline connected to grid
• Pre-stripping program ongoing
• Installation of mill equipment underway
 Mechanical installation is 98% complete on first line and 85%
complete on second line
• Installation of equipment in gold room underway
• Commissioning with water for leach tanks completed
• Truck wash facilities completed
• Permanent camp construction completed
22

23. Overview Detour Lake Facilities
PROCESSING STOCKPILE
PLANT RECLAIM
TRUCK SHOP &
WAREHOUSE
TRUCK WASH
MINE OFFICES
12-08-20
23

24. Overview Detour Lake Facilities
SECONDARY
CRUSHERS
STOCKPILE
GEODESIC RECLAIM
DOME
PRIMARY
CRUSHER
12-08-20
24

25. Primary Crusher (up to 100,000 tpd capacity)
Surface
12-08-20
Gyro is
9 m high
35 m
25

26. Stockpile Reclaim
12-08-20
26

27. Processing Plant Building
 Conventional gravity and CIP plant
 55,000 tpd (=92% availability of 60,000 tpd capacity)
 2 parallel lines (each with 1 secondary cone crusher + 1 SAG & 1 ball mill)
SAG MILL
BALL MILL
12-08-20
12-08-20
27

28. Processing Plant Building
 Estimated gravity recovery: 30-40%
 Estimated overall gold recovery: 91.0%
 Leach time 29 hours; leach feed size 80% passing 95 μm
CIP TANKS
PUMPS
12-08-20
28

29. Simple Process Plant @ 92% Availability
Stockpile
Gyratory 12 h live capacity
crusher:
60” x 113”
90,000 tpd
Secondary crushers:
2 X XL-1100 Ball mills:
SAG mills: 2 X 26’ x 40’6’’, 15MW
67,000 tpd
2 X 36’ x 20’, 15MW 55,000 tpd
Pebble crushers:
55,000 tpd
2 X XL-1100
To
73,000 tpd leaching
circuit
To
gravity
circuit
Circ. load
Circ. load From
28 %
Leach circuit: 250 % gravity
circuit
 55,000 tpd + 15% contingency in piping capacity
29

30. Detour Lake Employees & Contractors
Construction Phase Operation Phase (Starting 2013)
 +1,400 workers (at August 31, 2012)  400-500 employees
 Ramping up DGC team (324)  Rotation 1 week in/out
 New modern camp facilities with
400 en-suite rooms completed
30

31. Focus: Hiring Local First
Year-end 2012 Employment Objective: 324/400 as of August 31, 2012*
DIVISION OF LABOUR WORKFORCE ORIGIN
COCHRANE
FRONT LINE AREA COCHRANE
81% 23% 28%
REST OF
PROFESSIONAL ONTARIO
NORTHERN
19% ONTARIO 3%
44% OTHER
2%
 Professional are: MGMT, Eng., Geo., Supt.
 Front Line are: Operators, Admin, Support
 Continuing focus on hiring local/regional * Excludes Corporate office. 400 is minimum target.
 25% of employees are Aboriginals
31

32. PLANNING FOR
32
ORGANIC GROWTH
Under-Explored Greenstone Belt

33. Planning for Organic Growth
5 Year Plan for Successful Organic Growth
Large prospective land position of approx. 540 km2
• Two main gold structures with total strike length of >80km
• Continue focus on Detour Lake deposit extension (northern
structure i.e. Block A)
• Test targets on structure south of Detour Lake
Future objectives
 Grow reserve base to +20 M oz (@ US$850/oz)
 Increase mill throughput to above 75,000 tpd for gold production
output of +800,000 oz/yr
 Find high-grade ore near-surface within trucking distance to
supplement mill
33

34. Priority #1 – Block A Target
Block A
Pre-feasibility
 Detour Lake deposit open to the west and at depth
 Block A Pre-feasibility underway: Phase 1 drilling (49,000 m)
completed
*Not updated with TWD Dec. 30th PR. On Dec. 1, 2011, Detour Gold announced the acquisition of TWD.
34

35. Priority #1 – Block A Target
Block A
2012 Drilling Program
August 4, 2012
2012 proposed DH
2012 extension DH
2012 completed DH
Historical DH
Cancelled or 2011 year-end reserves
not accessible = 15.6 M oz
35

36. Priority #2 – South Structure
+80 km of favourable
geology
Sunday Lake Option
15.6 M oz in Reserves
Existing DDH
Gold occurrence (OGS)
DDH intersection >1g/2m
DDH intersection >1g/10m
MMI Survey Coverage
MMI Au Anomaly
*Note: Excludes drilling around Detour Lake and M zone (Block A).
36

37. Evaluating Expansion Opportunities
 Best scenario is throughput increase 55,000 to
2012 75,000 tpd @ US$1,200/oz
 Start pre-feasibility on block A
 Complete feasibility study and
assess technical feasibility and
2013
resultant project economics
 At >US$1,000/oz and after successful commercial
2014 production is achieved, proceed with plant
expansion
 Complete expansion within 2 years
37

38. Invest in Detour Gold
Our Vision
 Focus on a world-class asset – Detour Lake
 Canada’s largest pure gold play with 15.6 M oz in reserves
 Construction progressing on schedule (87% as of August 31)
 One of the best cash flow/share opportunities
 Gold production starting in Q1 2013
 Average annual gold production of 657,000 oz
 Excellent organic growth potential (5 year plan)
 Potential expansion of mill throughput
38

39. ADDITIONAL
INFORMATION
39

40. Detour Lake Profile
January 2011 September 2012
Detour Lake
Update (2) Mine Plan
Gold price (US$/oz) (1) 850 1,200
Foreign exchange rate (US$/Cdn$) 1.10 1.00
Assumptions Fuel price (US$/barrel) 80 100
Income/mining tax rate (%) 25/10 25/10
Net Smelter Royalty (%) 2 2
Ore milled (Mt) 449.6 470.0
Waste mined (Mt) (3) 1,654 1,734
Mine Strip ratio (waste:ore) 3.9 3.7
Parameters Average gold grade (g/t) 1.03 1.03
Total contained gold (M oz) 14.9 15.6
Estimated gold recovery (%) 91.0 91.0
Total recovered gold (M oz) 13.5 14.1
Mine life (years) 21 21.5
Average annual gold production (oz) 657,000 657,000
1. US$1,600/oz for 2013, US$1,500/oz for 2014, and US$1,400/oz for 2015.
2. Press release dated January 31, 2011 with Technical Report dated March 15, 2011.
3. Includes low-grade stockpile.
40

41. Gold Production/Cost Profile
Gold Production (‘000 oz) Total Cash Costs (C$/oz)
800 Avg. C$749/oz 900
700 850
600 800
500 750
400 700
300 650
200 600
100 550
0 500
Note: Excludes stripping adjustments.
41

42. Block Model – Gold Distribution
Approx. 3 M oz between 0.3-0.5 g/t Au
1,600
Stockpile over LOM OK (oz Au)
0.3-0.5 g/t material ID3 (oz Au)
1,400
1,200
Ounces (000’s)
1,000
800
600
400
200
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0
Cut-off BINs
42

43. Management & Directors
Management
 Gerald Panneton  James Mavor  Andrew Croal
Founder, President & CEO VP Finance Director Technical Services
Director  Rachel Pineault  Laurie Gaborit
 Michael Kenyon VP HR & Northern Affairs Director Investor Relations
Chairman  James Robertson  Jean-Francois Metail
 Paul Martin VP Environment & Director Reserves and
CFO Sustainability Resources
 Pierre Beaudoin  Derek Teevan  Greg Miazga
Sr. VP Capital Projects VP Aboriginal & Director Construction & Engineering
 Pat Donovan Government Affairs  Bill Snelling
VP Corporate Development  Eric Josipovic Director Corporate Systems
 Julie Galloway Controller and Controls
VP General Counsel &  Drew Anwyll  Christian Brousseau
Corporate Secretary Director of Operations Project Manager
 Patrik Gillerstedt
Directors Mine Manager
 Peter Crossgrove  Michael Kenyon  Jonathan Rubenstein
 Louis Dionne  Alex G. Morrison  Graham Wozniak
 Robert E. Doyle  Gerald Panneton
 Ingrid Hibbard
43

44. Contact Information
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
44