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Osisko Announces New Results from Ongoing Drill Program at Garrison Gold Project

Osisko Mining Inc. ("Osisko" or the "Corporation") is pleased to announce new results from the ongoing drill program at its 100% owned Garrison gold project located in Garrison Township, Ontario. The current 20,000 metre drill program at Garrison is designed to further test the limits of the known Jonpol and Garrcon gold deposits. Three drills are currently active on site. A total of 6 new drill holes are reported in this release, and are presented in greater detail in the table below.

Significant new results include: 14.9 g/t Au over 7.7 metres (uncut) in DDH OSK-G16-300 (8.70 g/t Au over 7.7 metres cut); and 1.02 g/t Au over 63.3 metres in DDH OSK-G16-296.

The drill program initiated by Osisko at the Garrison Project is designed to increase confidence in the historical resource estimates on the Jonpol and Garrcon deposits, as well as exploring for possible extensions of the known mineralized zones. The current results demonstrate there is good potential to increase the known mineral inventory at Jonpol through continued definition and exploratory drilling, specifically in the depth extensions of the main deposit. Historic drilling at Jonpol was limited to areas from surface to 600 metres depth with much of the drilling targeting above 350 metres depth. Hole OSK-G16-300 represents a mineralized extension of the deposit 200 metres below the current historical resource area.

Details of significant new results are outlined in the table below:

Hole From (m) To (m) Interval Au Zone
(m) (g/t)
OSK-G16-295 57.00 58.00 1.00 14.8 Green Zone
256.00 257.00 1.00 4.18 Garrcon
280.50 281.50 1.00 6.80 Garrcon
780.00 781.00 1.00 10.7 Garrcon
OSK-G16-296 89.70 153.00 63.30 1.13 Garrcon
including 137.00 147.00 10.00 2.37
OSK-G16-300 189.00 189.50 0.50 25.70 Garrcon
240.00 241.00 1.00 4.13 Garrcon
778.30 786.00 7.70 14.9 Jonpol
including 781.00 781.50 0.50 195
cut to 100 g/t 778.30 786.00 7.70 8.70
Notes:
(1) For complete drilling results please see www.osiskomining.com.
(2) True widths are estimated at 65-80% of the reported core length interval. See "Quality Control" below.
(3) High grade values cut to 100 g/t Au

Drill Hole Collar Coordinates and Information:

Hole Number Azimuth
(°)
Dip
(°)
Length
(m)
UTM E UTM N Section
OSK-G16-295 160 -60 906 578550 5374213 1200W
OSK-G16-296 340 -55 1218 578595 5373815 1300W
OSK-G16-297 340 -50 600 577900 5373960 1900W
OSK-G16-298 340 -60 696 577695 5373935 2100W
OSK-G16-299 160 -60 795 579415 5374618 250W
OSK-G16-300 340 -55 822 578350 5373900 1500W

DDH OSK-G16-295 intersected 14.8 g/t Au over 1.0 metres, 50 metres from surface within the Green Zone horizon within the hangingwall of the Munro Shear Zone as well as three mineralized intervals below the Garrcon Deep zone resource with up to 10.7 g/t Au over 1.0 metres. This new intercept is approximately 100 metres south of the existing deep resource.

DDH OSK-G16-296 intersected a broad zone of mineralization along the western portion of the current Garrcon resource grading 1.02 g/t Au over 63.3 metres including 2.37g/t over 10.0 metres.

DDH OSK-G16-300 intersected a series of well mineralized albite zones within the Munro Shear approximately 200 metres below the existing drilling in the Jonpol Deposit East Zone. An interval of 14.9 g/t Au over 7.7 metres including 195 g/t Au over was 0.5 metres intersected approximately 200 metres below the existing Jonpol resource. This hole demonstrates the possibility of increasing the resources within the Jonpol deposit at depth.

DDH OSK-G16-297,OSK-G16-298, and OSK-G16-299 did not return significant results.

Full analytical results from the 6 new drill holes are available at www.osiskomining.com.

Qualified Person

The scientific and technical content of this press release has been reviewed, prepared and approved by Mr. Greg Matheson, P.Geo. Senior Project Manager of the Garrison gold project, who is a "Qualified Person" as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101").

Quality Control

True widths of the new exploration intercepts reported in this press release have yet to be determined. Additional drilling is planned for the immediate area which will enable the true width determination. Assays are uncut except where indicated. All HQ core assays reported were obtained by either whole sample rock metallic screen/fire assay or standard 30 gram fire-assaying with AA finish at SGS Mineral Services in Cochrane, Ontario. The whole sample metallic screen assay method is selected by the geologist when samples contain coarse gold or any samples displaying gold initial fire assay values greater than 4g/t. Drill program design, Quality Assurance/Quality Control and interpretation of results is performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices. Standards and blanks are included with every 20 samples for QA/QC purposes by the Corporation as well as the lab. Approximately 5% of sample pulps are sent to secondary laboratories for check assays.

Source: http://www.osiskomining.com/

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