December 17, 2015 NEWS RELEASE Detour Gold Reports Drilling Results from Lower Detour Detour Gold Corporation (TSX: DGC) ( Detour Gold or the Company ) reports final results from its 2015 summer drilling program at Lower Detour, which targeted Zone 58N located approximately six kilometres south of its flagship Detour Lake gold mine. An infill drilling program at 50 metre spacing was conducted to test the continuity and extent of the gold mineralization within Zone 58N. A total of 30,408 metres in 55 holes was completed. The results from the first 14,800 metres of drilling were released on October 20, 2015. The results from the last 21 holes totaling 15,606 metres continued to demonstrate the continuity of the gold mineralization at depth. From the 53 drill holes that tested Zone 58N, visible gold was observed in 46 holes. To date, gold mineralization has been intersected over an east-west strike length of 450 metres, from surface to a depth of 800 metres. The mineralized system remains open at depth. The Company plans to continue the drilling campaign this winter with an infill and step-out drilling program of up to 75,000 metres. We continue to be encouraged with the results and the upcoming drilling program will provide the answers we need before we make the decision to start an underground exploration program at Zone 58N, said Pierre Beaudoin, COO of Detour Gold. As part of our disciplined capital allocation process, we plan to take a step by step approach for advancing Zone 58N. Significant Intercepts* (uncut gold assay reported) 4.35 g/t over 14.0 m (DLD-15-177) 23.32 g/t over 4.3 m, including 50 g/t over 2 m (DLD-15-178) 17.26 g/t over 4.3 m, including 26.34 g/t over 2.8 m (DLD-15-179) 14.01 g/t over 4.4 m, including 60.60 g/t over 1 m (DLD-15-181) 6.48 g/t over 10.6 m (DLD-15-182W) 4.04 g/t over 7.6 m, (DLD-15-186A) 10.02 g/t over 8.0 m (DLD-15-188) *Refer to the table and long-section at end of the news release. Mineralization starts near-surface (i.e. DLD-15-138 intersected 6.4 g/t over 13.0 metres, below 10 metres of overburden) and thus far extends to a vertical depth of approximately 800 metres (i.e. DLD-15-188 intersected 10.02 g/t over 8.0 metres). Gold mineralization is mainly found within the southern portion of an altered feldspar porphyry intrusive characterized by brittle deformation, containing quartz and/or quartz-tourmaline veins with up to 5% pyrite and multiple occurrences of visible gold. The thickness of the feldspar porphyry can exceed 100 metres, although individual mineralized lenses are typically up to 30 metres in width. The feldspar porphyry narrows to the east and west. 1/5
Technical Information The drilling program is being managed by Guy MacGillivray, P.Geo., Exploration Manager of Detour Gold, a Qualified Person within the meaning of National Instrument 43-101. Mr. MacGillivray has verified and approved the data disclosed in this release, including the sampling, analytical and test data underlying the information. For this drilling campaign, samples are prepared at ALS Laboratories in Timmins and Sudbury and assayed at their Vancouver, B.C laboratory. Analysis for gold is done on sawn half core samples (size HQ or NQ) using 50 grams fire assay (AAS finish). Samples with higher grade gold (>3 g/t) or with visible gold are reassayed using the pulp and fire assay with gravimetric finish procedures. The Company s quality control checks include the insertion of standard reference materials and blank samples to monitor the precision and accuracy of the assay data. About Detour Gold Detour Gold is an intermediate gold producer in Canada that holds a 100% interest in the Detour Lake mine, a long life large-scale open pit operation. For further information, please contact: Paul Martin, President and CEO Laurie Gaborit, Director Investor Relations Tel: (416) 304.0800 Tel: (416) 304.0581 Detour Gold Corporation, Commerce Court West, 199 Bay Street, Suite 4100, P.O. Box 121, Commerce Court Postal Station, Toronto, Ontario M5L 1E2. Forward-Looking Information This press release contains certain forward-looking information as defined in applicable securities laws (referred to herein as forward-looking statements ). Specifically, this press release contains forward-looking statements regarding the Company s plans to continue the drilling campaign this winter with an infill and step-out drilling program of up to 75,000 metres; and the results from this winter drilling program providing the answers the Company needs to make the decision of starting an underground exploration program of Zone 58N. 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 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 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 forwardlooking statements, no inference should be drawn that it will make additional updates with respect to those or other forward-looking statements. 2/5
Significant Assay Results from 2015 Summer Drilling Program Zone 58N, Lower Detour Area Hole Number From To Au g/t DLD-15-169A DLD-15-170 Section 595680E DLD-15-172 DLD-15-173 Section 595480E DLD-15-174 DLD-15-175A DLD-15-176 DLD-15-177 Section 595530E DLD-15-178 DLD-15-179 DLD-15-180 Section 595580E DLD-15-181 DLD-15-182W DLD-15-183 DLD-15-184 Section 595830E DLD-15-185 Section 595580E DLD-15-186A Section 595680E DLD-15-187 Section 595430E Au g/t Cut Length m Domain 644.0 648.7 2.89 2.89 4.7 58N 673.6 677.8 1.54 1.54 4.2 58N 514.1 515.0 27.50 27.50 0.9 75 652.0 654.0 5.37 5.37 2.0 58N 660.5 664.9 4.31 4.31 4.4 58N 696.0 703.7 1.54 1.54 7.7 58N 742.0 751.3 2.04 2.04 9.3 58N Incl 746.0 751.3 3.02 3.02 5.3 58N 587.0 589.0 1.99 1.99 2.0 58N 600.0 603.0 3.08 3.08 3.0 58N 639.0 646.0 1.12 1.12 7.0 58N 288.3 289.0 3.62 3.62 1.7 75 387.0 391.0 5.06 5.06 4.0 58N Incl 387.0 388.9 10.58 10.58 1.9 58N 396.0 399.0 4.94 4.94 3.0 58N 667.0 672.0 4.03 4.03 5.0 58N 251.0 252.0 34.60 30.00 1.0 58 366.0 373.5 0.93 0.93 7.5 75 469.9 474.0 1.42 1.42 4.1 58N 667.0 673.0 4.12 4.12 6.0 58N Incl 672.0 673.0 23.30 23.30 1.0 58N 701.0 708.0 1.25 1.25 7.0 58N 742.0 756.0 4.35 4.35 14.0 58N Incl 753.0 756.0 14.09 14.09 3.0 58N 432.3 343.0 1.79 1.79 1.7 75 538.0 542.3 23.32 5.73 4.3 58N Incl 538.0 540.0 50.00 12.20 2.0 58N 591.0 595.3 17.26 14.48 4.3 58N Incl 591.0 593.8 26.34 22.07 2.8 58N 853.0 861.0 2.49 2.49 8.0 58N Incl 853.0 857.0 4.51 4.51 4.0 58N 929.0 942.0 1.55 1.55 13.0 58N Incl 930.0 939.0 2.04 2.04 9.0 58N 633.1 637.5 14.01 7.06 4.4 58N Incl 636.0 637.0 60.60 30.00 1.0 58N 532.4 543.0 6.48 4.61 10.6 58N Incl 541.0 542.0 49.80 30.00 1.0 58N 547.0 551.0 2.53 2.53 4.0 58N 364.0 370.0 2.72 2.72 6.0 58 594.0 595.0 2.87 2.87 1.0 75 690.5 692.0 4.65 4.65 1.5 58N 735.2 738.2 1.28 1.28 3.0 58N 604.0 605.5 54.00 30.00 1.5 58 902.0 909.0 1.12 1.12 7.0 58N 935.0 937.0 5.69 5.69 2.0 58N 1051.0 1059.0 1.57 1.57 8.0 58N 839.0 840.1 11.35 11.35 1.1 58N 866.4 884.6 3.28 3.28 18.2 58N Incl 877.0 884.6 4.04 4.04 7.6 58N 203.2 203.9 12.70 12.70 0.7 75 3/5
Hole Number From To Au g/t DLD-15-188 Au g/t Cut Length m Domain 629.0 630.5 2.41 2.41 1.5 75 880.3 884.0 4.66 4.66 5.0 58N Incl 882.0 884.0 11.47 11.47 2.0 58N 989.0 998.0 2.87 2.87 9.0 58N 1017.0 1021.0 8.15 7.60 4.0 58N Incl 1017.0 1018.0 32.20 30.00 1.0 58N 1026.0 1034.0 10.02 4.66 8.0 58N Incl 1032.0 1033.0 72.90 30.00 1.0 58N 1107.0 1108.7 9.32 9.32 1.7 58N Note: Reported average gold grade is over core length widths. True width is estimated to be 65 to 75% of the drilled length. Reported intervals are also shown with an assay cap of 30 g/t. Some of the assays reported herein are still subject to re-assay using a gravimetric finish. Refer to the prior long-section for the results of the first part of the 2015 drilling program of Zone 58N (October 20, 2015 news release). The complete set of cross-sections for Zone 58N will be available on December 18 on the Company s website: http://www.detourgold.com/projects/detour-lake-exploration-regional/default.aspx 4/5
Selected Significant Assay Results from Zone 58N, Lower Detour Area Note: Reported average gold grade is over core length widths. True width is estimated to be 65 to 75% of the drilled length. Reported intervals are shown uncapped. Some of the assays reported herein are still subject to re-assay using a gravimetric finish. 5/5