Focus Graphite starts dam break study at Lac Knife

Executive Summary

• Focus Graphite Inc. has initiated a comprehensive tailings storage facility (TSF) dam break study for its Lac Knife graphite project in Quebec, led by engineering firm WSP Canada Inc.
• The study aims to evaluate hypothetical failure scenarios for the planned filtered (dry-stack) tailings facility, generating flood mapping and downstream impact assessments to support the Environmental and Social Impact Assessment (ESIA).
• Completion of this study is a key component of the ESIA process, with results expected to support regulatory review and advance the project toward its 2026 permitting timeline.

Key Details

• Study Scope: The analysis evaluates hypothetical failure scenarios for the Lac Knife project's planned filtered (dry-stack) tailings storage facility and associated water retention infrastructure.
• Methodology: The study uses advanced hydrological and hydraulic modeling to simulate breach scenarios under extreme conditions, including probable maximum precipitation (PMP).
• Outputs: The work will produce detailed flood mapping, estimating potential flood extent, depth, and timing to inform contingency planning and strengthen the ESIA submission.
• Standards Compliance: The assessment aligns with guidelines from the Canadian Dam Association (CDA) and the Global Industry Standard on Tailings Management (GISTM).
• Timeline: The study supports the company's 2026 ESIA advancement timeline, representing a key milestone toward permitting and future construction readiness.
• Technical Context: The Lac Knife project features a filtered (dry-stack) tailings approach, described as a lower-risk alternative to conventional slurry-based systems.
• Qualified Person: Technical content reviewed and approved by Richard Pearce, PE, president of Brasil Insight Capital LLC.

Notable Quotes

• "This is a meaningful step forward for Lac Knife," said Dean Hanisch, chief executive officer of Focus Graphite. "With this study under way, we are entering the final stages of the ESIA process and establishing a clearer line of sight toward permitting. As we advance, we remain committed to developing this project responsibly, respecting the surrounding environment and the communities connected to this land, while building a high-quality, near-term source of graphite for North American supply chains."