Sentinel Metals (SNM) Euroz Hartleys Rottnest Conference presentation summary

Project overview and strategy

• Advancing the Columbia Gold Project in Montana, USA, with a large-scale resource and near-term development potential.

• Mission focuses on delivering long-term value through high-quality gold asset development in the US, emphasizing integrity and sustainability.

• Project benefits from superior land tenure, being located on private land with full mineral rights, and proximity to infrastructure and skilled workforce.

• Strategic appointment of a VP for Government and Community Relations to strengthen regulatory and community engagement.

Resource and exploration highlights

• Current JORC (2012) inferred resource of 920,000oz Au at 1.34g/t Au, with an additional exploration target of 800,000–1,200,000oz Au at 1.1–1.4g/t.

• Resource defined within a 2km strike length and 350m wide corridor, open at depth and along strike.

• Top drill intercepts include 3.1m at 106.3g/t Au and 132.6m at 2.01g/t Au, indicating both high-grade and bulk tonnage potential.

• Eleven resource domains identified, with significant upside from deeper and lateral extensions.

• Geophysics and structural mapping have defined new priority drill targets, including deep conductive zones and convergence zones for feeder-style mineralization.

Technical and operational progress

• Over 45,000m of historical drilling and more than 34,300 samples underpin the resource model.

• Extensive historical metallurgical testing shows up to 96% gold and 77% silver recovery, confirming amenability to multiple processing paths.

• 2024 MRE constrained within a US$2,200/oz gold open pit shell, with recoveries and metal equivalents based on robust historical testwork.

• Maiden drill program of 5,000m planned to improve resource confidence, test extensions, and explore deeper targets.

• Data management and permitting advanced, with updated water baselines, remodeled database, and maiden drill permit submitted.