The feasibility study projected an All-In Sustaining Cost ( AISC ) of approximately US$758–$760 per ounce , positioning it as one of the lowest-cost mines in Canada.
Final environmental approvals and a formal Board Investment Decision (FID) are expected in the second half of 2025 or early 2026.
Gold Fields anticipates achieving the first gold pour at Windfall by late Q4 2026 or early 2027 .
The project is currently in the , with Gold Fields aiming for aggressive development timelines:
Full-scale construction of the processing plant is slated to take 18–24 months.
The site is now fully powered by hydroelectricity through an 85km power line operated by the Cree First Nation of Waswanipi , significantly reducing the project's carbon footprint.
As of April 2026, the has transitioned from an exploration-focused play to a high-priority development asset under the full ownership of Gold Fields , which completed a $2.1 billion acquisition of Osisko Mining in October 2024. While the project is moving toward construction, drilling continues to yield the "bonanza" grades that made the deposit famous. Latest Drilling & Exploration Highlights (Early 2026)
