Osisko Intersects 34.3 g/t Au Over 4.5 Metres at Windfall

(Toronto, May 1, 2018) Osisko Mining Inc. (OSK:TSX. “Osisko” or the “Corporation”) is pleased to provide new results from the ongoing drill program at its 100% owned Windfall Lake gold project located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec. The 800,000 metre drill program combines definition, expansion and exploration drilling in and around the main Windfall gold deposit and the adjacent Lynx deposit (located immediately NE of Windfall).

Significant new analytical results from 24 intercepts in 12 drill holes and 5 wedges focused on infill drilling in the Windfall deposit are presented below. Today’s infill drilling results will not be included in the pending mineral resource scheduled for release in May 2018.

Highlights from the new results include: 34.3 g/t Au over 4.5 metres in OSK-W-17-1172; 13.0 g/t Au over 5.7 metres in OSK-W-18-1336-W2; 27.7 g/t Au over 2.1 metres in OSK-W-17-778, 25.5 g/t Au over 2.1 metres in OSK-W -17-1380. Maps showing hole locations and full analytical results are available at www.osiskomining.com.

			From				Interval			Au (g/t)			Au (g/t)
	Hole No.				To (m)								cut to		Zone		Corridor
			(m)				(m)			uncut
													100 g/t
	OSK-EAG-12-427	918.0		920.0		2.0			13.0						Underdog		Underdog
	including	918.9		920.0		1.1			23.6
	OSK-EAG-13-513	1050.0		1054.0		4.0			10.6						FW4		Underdog
	including	1050.0		1052.0		2.0			18.0
	OSK-W-16-762	1253.0		1255.0		2.0			4.66						FW4		Underdog
	OSK-W-17-778	917.0		919.2		2.2			11.6						FW0		Underdog
		1095.4		1098.4		3.0			10.6						FW1		Underdog
		1114.6		1117.1		2.5			9.24						FW1		Underdog
		1132.0		1134.1		2.1			27.7			19.1			FW2		Underdog
	including	1132.0		1132.4		0.4			145			100
		1158.0		1160.0		2.0			4.49						FW2		Underdog
	OSK-W-17-1172	136.5		141.0		4.5			34.3			27.4
	including	136.5		137.0		0.5			44.1						Z27		Zone 27
	including	140.0		141.0		1.0			131			100
	OSK-W-17-1336-W1	723.0		725.0		2.0			9.44						Vein		Red Dog
	including	723.7		724.0		0.3			62.8
	OSK-W-18-1336-W2	831.9		835.3		3.4			4.62						FW0		Underdog
		849.7		852.3		2.6			3.53						FW0		Underdog
		950.0		952.3		2.3			3.92						FW1		Underdog
		964.0		969.7		5.7			13.0						FW1		Underdog

Read More: https://www.osiskomining.com/wp-content/uploads/OSK_Windfall-Results_Main-Zone_20180501-EN-Final.pdf

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