St Barbara (SBM) Presentation to Mining Society of Nova Scotia summary

Project overview and redesign

• 15-Mile Consolidated Project includes 15-Mile, Beaver Dam, and Cochrane Hill gold deposits on Nova Scotia's Eastern Shore, with a focus on remediating over 3 million m³ of historic tailings and leveraging lessons from previous projects.

• Complete redesign since 2023 prioritized environmental and social constraints, resulting in a central processing hub at 15-Mile and satellite pits at Beaver Dam and Cochrane Hill.

• Project aims for significant reductions in environmental and social impacts, creating 732 jobs and contributing $4.8B to Nova Scotia's GDP, with annual gold production of 106,000 oz.

• Life-of-mine is 11.2 years, with Beaver Dam starting in year 4 and Cochrane Hill in year 6; initial capital is $251M, and average AISC is C$1,710/oz.

• Processing plant will be relocated from Touquoy to 15-Mile, and tailings dam will remediate historical contaminated soil.

Environmental mitigation and mine planning

• Mine plans reduce surface stockpiles, balance strip ratio, and use progressive backfilling to minimize environmental impacts and accelerate reclamation.

• Multiple Accounts Analysis and water management strategies optimize tailings deposition, reduce CDA risk, and consolidate infrastructure to minimize disturbance.

• Renewable energy opportunities include closed-loop pumped hydro (+80MW) and solar potential (186MW) for long-term post-closure benefits.

• 15-Mile, Beaver Dam, and Cochrane Hill each achieve significant reductions in project disturbance area, with 17%, 42.4%, and 41.8% reductions respectively.

Socio-economic and community benefits

• Project expected to generate $236.5M in GDP during construction and $410.3M per year during operations, with $4.83B total household income over the operating period.

• 1,386 full-time jobs created in Nova Scotia during construction and 723 during operations; total project spending is $2.0B over the life of mine.

• Government tax revenue includes $66.1M during construction and $41.7M per year during operations.

• Over $1.1M contributed to local organizations since 2017, with 20+ community partnership agreements and ongoing bursary programs for local students.