TORONTO, ONTARIO -- (Marketwire) -- 08/19/08 -- Detour Gold Corporation (TSX: DGC) ("Detour Gold" or the "Company") is pleased to report that it has filed today a Technical Report for the updated National Instrument 43-101 compliant mineral resource estimate for its Detour Lake gold project in northern Ontario announced on July 2, 2008. The Company has provided additional information in the Technical Report, which includes cut-off grade sensitivities ranging from 0.30 to 0.90 g/t gold for the Base Case US$700/oz engineered pit design, a preliminary mining schedule and improvements of the pit slopes. The result of this work is described below.

Gerald Panneton, President and CEO of Detour Gold commented: "We are continuing to advance Detour Lake towards development and production. The project is remarkably strong at US$700/oz gold price with nearly 10 million ounces grading 1.91 g/t at a cut-off grade as high as 0.90 g/t and up to 15 million ounces grading 1.02 g/t at a cut-off grade as low as 0.30 g/t. This will provide Detour Gold with flexibility during production depending on the gold price environment and will help secure our profitability. The preliminary mining schedule, which supports our expansion from 30,000 tpd to 60,000 tpd in Year 3, shows that Detour Lake will be the largest gold operation in North America. There is potential to further increase the resource base especially to the west of the Calcite Zone and below the former open pit. We are awaiting results for 40% of our Phase II program and our Phase III program of 30,000 metres is underway. We expect to deliver a positive feasibility study as we proceed with a final pit design and reserve estimates, possibly by year-end. It is our goal to make Detour Gold the next premium intermediate gold producer."

Cut-off Grade Sensitivities on the Base Case US$700/oz Engineered Pit Design

In the press release issued on July 2, 2008, the Company provided sensitivities to gold price for the Base Case (0.50 g/t cut-off grade). The Company has now run sensitivities on a range of cut-off grades for the Base Case. The results clearly indicate that even at a cut-off grade of 0.90 g/t, the deposit still contains a measured and indicated resource of 8.4 million ounces of gold at a grade of 1.95 g/t with an additional 1.7 million ounces at a grade of 1.75 g/t in the inferred category.

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                   Measured           Indicated     Measured and Indicated
                   Category            Category           Categories
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Cut-off                                                                Gold
Grade       Tonnes    Grade     Tonnes    Grade     Tonnes    Grade  Ounces
(g/t Au) (millions) (g/t Au) (millions) (g/t Au) (millions) (g/t Au) (000's)
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0.30          54.1     1.32      300.8     1.02      354.9     1.07  12,168
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0.40          45.4     1.50      245.5     1.17      290.9     1.22  11,454
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0.50          38.8     1.68      204.1     1.32      242.9     1.38  10,763
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0.60          33.7     1.86      172.4     1.46      206.0     1.53  10,113
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0.70          29.4     2.03      147.4     1.60      176.9     1.67   9,506
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0.80          26.2     2.19      127.5     1.73      153.7     1.81   8,948
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0.90          23.4     2.35      111.1     1.86      134.5     1.95   8,426
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                    Inferred
                    Category
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Cut-off                         Gold
Grade       Tonnes     Grade  Ounces
(g/t Au) (millions)  (g/t Au) (000's)
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0.30         102.6      0.89   2,936
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0.40          80.0      1.04   2,684
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0.50          63.9      1.19   2,452
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0.60          52.5      1.33   2,252
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0.70          43.4      1.48   2,061
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0.80          36.7      1.61   1,901
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0.90          31.1      1.75   1,748
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Note: Gold values are capped at 20 g/t.

Preliminary Mining Schedule

A preliminary mining schedule was prepared for the development of the Detour Gold project and is presented below. The mining schedule is based on a mining rate of 30,000 tpd for Year 1 and Year 2, followed by an increase to 60,000 tpd for subsequent mining years until the end of the mine life. The schedule is created using five (5) mining phases, about 3 to 4 years per phase including a starter pit to allow for a higher average grade and a lower stripping ratio to maximize the return on the investment. A cut-off grade of 0.50 g/t is used and the schedule consists of all mineral categories (i.e. measured, indicated and inferred). The preparation of this preliminary mining schedule does not include mining dilution and gold recovery factor.

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                           PP     Yr 1     Yr 2     Yr 3     Yr 4     Yr 5
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Ore (MT)                    0    10.82    11.85    21.60    21.60    21.61
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Grade (g/t Au)              -     1.25     1.29     1.42     1.17     1.16
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Insitu oz (000's oz)        0      433      493      984      815      805
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Rock (MT)                6.18    41.43    51.81   110.77   121.46   134.74
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Overburden (MT)         15.00    12.50    12.50    12.50    12.50     5.18
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Waste (MT)              21.18    53.93    64.31   123.27   133.96   139.92
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Strip ratio                 -     4.99     5.43     5.71     6.20     6.47
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                         Yr 6     Yr 7     Yr 8     Yr 9  Year 10  Year 11
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Ore (MT)                21.61    21.60    21.61    21.58    21.61    21.60
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Grade (g/t Au)           1.33     1.25     1.26     1.30     1.50     1.42
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Insitu oz (000's oz)      924      866      875      903    1,042      990
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Rock (MT)              140.55   144.75   146.73   143.81   142.11   137.90
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Overburden (MT)             0        0        0        0        0        0
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Waste (MT)             140.55   144.75   146.74   143.81   142.11   137.90
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Strip ratio              6.50     6.70     6.79     6.66     6.58     6.38
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                      Year 12  Year 13  Year 14  Year 15  Year 16    Total
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Ore (MT)                21.61    21.59    21.61    21.59     3.28   306.77
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Grade (g/t Au)           1.25     1.41     1.38     1.54     1.93     1.34
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Insitu oz (000's oz)      871      978      962    1,070      204   13,215
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Rock (MT)              135.70   132.04   126.11   124.34    17.64    1,858
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Overburden (MT)             0        0        0        0        0    70.18
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Waste (MT)             135.70   132.04   126.11   124.34    17.64    1,928
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Strip ratio              6.28     6.12     5.84     5.76     5.37     6.29
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Pit Slope Design Upside Potential

Subsequent to the mineral resource update of July 2, 2008, results from acoustic televiewer (ATV) surveys carried out in three exploration holes targeting the footwall slopes indicated that the pit slopes could be steepened to 53 degrees from 49 degrees in certain portions of the footwall. These improvements will be incorporated in the final pit design of the feasibility study currently underway.

Further improvements are expected, especially at the west end of the deposit, as the Company completes its infill drill program (remaining Phase II and Phase III) and incorporates them in the US$700/oz engineered pit design.

Detailed Engineered Pit Design Resource Estimate (reported on July 2, 2008)

On July 2, 2008, the Company reported a mineral resource update based on a detailed engineered pit design. The measured and indicated gold resources increased 125% from 4.8 million ounces to 10.8 million ounces while the inferred gold resources decreased 20% from 3.0 million ounces to 2.4 million ounces. Based on a cut-off grade of 0.50 g/t gold and a gold price of US$700/oz, the in-pit resources included in a detailed engineered pit design is shown below.

June 2008 Detailed Engineered Pit Design Resource Estimate
                   Base Case US$700/oz

                              Grade Capped    Gold Ounces
                    Tonnes    at 20 g/t Au        (capped)
                 (millions)        (g/t Au)        (000's)
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Measured (M)          38.8            1.68          2,099
Indicated (I)        204.1            1.32          8,664
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Total (M&I)          242.9            1.38         10,763
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Inferred              63.9            1.19          2,452
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Notes:
(1) The mineral resources are classified as measured, indicated and
    inferred, and comply with the CIM mineral resource definitions
    referenced in National Instrument 43-101.
(2) Base case assumes a gold price of US$700/oz gold and $US exchange rate
    of $1.10.
(3) Mineral resources that are not mineral reserves do not have demonstrated
    economic viability.
(4) The quantity and grade of reported inferred resources in this estimation
    are conceptual in nature and there has been insufficient exploration to
    define these inferred resources as an indicated or measured resource and
    it is uncertain if further exploration will result in upgrading them to
    an indicated or measured resource category.

Timeline

Release of the remaining Phase II drill results (approximately 68,000 metres) is expected over the next six months. The Phase III program of 30,000 metres is currently underway to properly continue the infill of the deposit on a 40 metre by 40 metre grid and to expand the deposit to the west of the Calcite Zone.

Detour Gold plans to order its long-lead items (i.e. SAG and ball mills) before the end of month. Ongoing optimization studies are currently underway for the design pit and process design flowsheet. Work is underway for the Environmental Impact Assessment, which is expected to be completed by early 2009.

NI 43-101 Compliant Technical Report

The Company has filed a NI 43-101 compliant Technical Report on SEDAR, which is also available on the Company's website - http://www.detourgold.com/s/DetourLa... . The following Qualified Persons have participated in the preparation of the report: Patrice Live, Eng. of BBA Inc. prepared the fully designed and engineered open pit resource, and provided and reviewed the costs estimates used in the resource estimates; Kurt Breede, P.Eng. of Watts, Griffis and McOuat Limited audited the mineral resource estimate prepared by Thon Consulting and compiled the technical report; Lawrence Melis, P.Eng. of Melis Engineering Ltd. supervised and conducted all the metallurgical work done to date; and Luiz Castro, P.Eng. of Golder Associates supervised and conducted all the geotechnical work done to date and provided the pit slope information used in the designed and engineered open pit resource.

All the names mentioned above have reviewed the content of this news release.

All samples from the Company's drilling programs are processed and analyzed at SGS Minerals Services in Don Mills, Ontario (accredited to ISO/IEC 17025).

Forward-Looking Information

This press release contains certain forward-looking information as defined in applicable securities laws (referred to herein as "forward-looking statements"). Often, but not always, forward-looking statements can be identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "continues", "forecasts", "projects", "predicts", "intends", "anticipates" or "believes", or variations of, or the negatives of, such words and phrases, or statements that certain actions, events or results "may", "could", "would", "should", "might" or "will" be taken, occur or be achieved. Specifically, this press release includes forward-looking statements regarding: the Company's planned drilling program and estimate of the quantity and quality of its mineral resources. Inherent in forward-looking statements are risks, uncertainties and other factors beyond the Company's ability to predict or control. These risks, uncertainties and other factors include, but are not limited to, the uncertainties involved in interpreting geological data and other risks involved in the gold exploration and development industry as well as those risk factors listed in the Company's Annual Information Form (AIF), Item 4.4 -- "Description of Business - Risk Factors" filed on SEDAR. Readers are cautioned that the list of factors included in the AIF is not exhaustive of the factors that may affect the forward-looking statements. Actual results and developments are likely to differ, and may differ materially, from those expressed or implied by the forward-looking statements contained in this press release. Such statements are based on a number of assumptions which may prove to be incorrect, including, but not limited to, the following assumptions: the Company's exploration and development activities on the Detour Lake Property will proceed in accordance with the Company's current timetables; and the Company's resource estimates, geological and metallurgical assumptions (including with respect to the size, grade and recoverability of mineral resources) and operational and price assumptions on which the resource estimates are based, are accurate. Forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the Company'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. All forward-looking statements herein are qualified by this cautionary statement. Accordingly, readers should not place undue reliance on forward-looking statements. The Company undertakes no obligation to update publicly or otherwise revise any forward-looking statements whether as a result of new information or future events or otherwise, except as may be required by law.

Information Concerning Estimates of Mineral Resources

This news release uses the terms 'measured', 'indicated' and 'inferred' resources. Detour Gold advises investors that although these terms are recognized and required by Canadian regulations (under National Instrument 43-101 Standards of Disclosure for Mineral Projects), the U.S. Securities and Exchange Commission does not recognize them. Investors are cautioned not to assume that any part or all of the mineral deposits in these categories will ever be converted into reserves. In addition, 'inferred resources' have a great amount of uncertainty as to their existence, and 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 rules, estimates of inferred mineral resources may not form the basis of feasibility or pre-feasibility studies, or economic studies except for Preliminary Assessment as defined under 43-101. Investors are cautioned not to assume that part or all of an inferred resource exists, or is economically or legally mineable.

Contacts:
Detour Gold Corporation
Gerald Panneton
President and CEO
(416) 304-0800

Detour Gold Corporation
Laurie Gaborit
Director Investor Relations
(416) 304-0581