New Results Include 413 g/t Au Over 8.0 Metres
and 623 g/t Au Over 3.0 Metres
(Toronto, October 26, 2023) Osisko Mining Inc. (OSK:TSX. "Osisko" or the "Corporation") is pleased to
provide an update from the ongoing drill program at its 50% owned Windfall gold project located in the
Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Québec.
The 2023 drilling campaign primarily targeted infill areas. Since the start of the year, over 95,000 metres
have been drilled by 8 underground rigs focused on the Lynx segment of the deposit.
Highlights from the 2023 drill program are presented below and include 320 intercepts from 248 drill holes and 1 wedge. These highlights are intercepts with a metal factor (grams*meters) greater than 20. The intercepts are all located within the defined mineral resource estimate ("MRE") blocks as described in Osisko's feasibility study on Windfall (see FS Technical Report (as defined herein), a copy of which is available on SEDAR+ under Osisko's issuer profile), and have targeted upgrading inferred mineral
resources to measured or indicated mineral resources or indicated minerals resources to measured mineral resources as applicable.
Osisko Chief Executive Officer John Burzynski commented: "Infill drilling at the Windfall deposit is progressing well and confirming our models. High-grade gold continues to be intercepted in the Lynx areas including Triple Lynx, once again highlighting the world-class nature of the deposit. Of note, we have more than ten intervals in this set of numbers that returned values over one kilogram per tonne of gold. Infill drilling will continue into next year. We and our joint venture partner are very much looking forward to resuming exploration on our greater than 2,300 square kilometer land package around Windfall in the coming months".
Regional exploration in the Urban Barry area will recommence on near-deposit and regional grassroots targets. Exploration will include ground geophysics and diamond drilling of various targets.
Maps showing Windfall hole locations are available at www.osiskomining.com. Maps:
Top_Intersect_2023, PR_Longsections_ 20231026_EN.
2023 Drilling

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