Thunder Gold Engages Micon International to Complete an NI 43-101 Mineral Resource Estimate at Tower Mountain

On October 21, 2025, Thunder Gold announced it has engaged Micon International Limited to complete the first independent NI 43-101 Mineral Resource Estimate (MRE) for its Tower Mountain Gold Property. The MRE will focus on the western contact of the Tower Mountain Intrusive Complex, covering a strike length of 1,800 metres. The company anticipates the MRE will be completed by January 2026. Concurrently, the 2,000-metre Phase Three drill program is reported to be 50% complete, with final results expected by January 15, 2026, which will be incorporated into the resource estimate.

This announcement is a material and positive step for Thunder Gold, representing a significant de-risking milestone in the project's development. Moving from a conceptual target to a formal, independently verified resource estimate is a critical step for any junior exploration company to validate its asset and provide a basis for valuation.

A chronological review of the company's news demonstrates a clear and consistent execution of its stated strategy: - Nov 2024 - Jan 2025: The company identified and drilled the new "P-Target" on the eastern side of the intrusive complex, returning strong surface and drill results (e.g., 1.93 g/t Au over 54.2m). This demonstrated the potential for mineralization beyond the historically drilled western contact. - Mar 2025: Management outlined a clear two-phase drill program for 2025, with Phase 2 specifically designed to target gaps on the Western Contact "in advance of an initial NI 43-101 mineral resource estimate." - June - July 2025: The company successfully raised C$1.6 million in an oversubscribed financing to fund its exploration plans and completed the Phase 2 drill program on schedule and under budget. - Sept 2025: Thunder Gold released excellent results from the Phase 2 program, including long intercepts of 1.25 g/t Au over 103.5 metres and 4.22 g/t Au over 82.5 metres. These results confirmed the continuity and scale of the system, providing the necessary confidence to proceed with a resource estimate. A fully-funded Phase 3 infill drill program was immediately announced with the specific goal of supporting this MRE.

The October 21st news is the direct and logical outcome of this successful exploration progression. The company is delivering on its promises. The timeline aligns perfectly, with the MRE completion (January 2026) scheduled just after the receipt of final Phase 3 drill results (January 15, 2026), ensuring the most current data is included. While the announcement itself was expected, the formal engagement of a reputable firm like Micon solidifies the company's transition from a pure exploration play to a resource-development story. The market can now look forward to a quantifiable asset, which fundamentally changes the investment thesis.

Thunder Gold Corp. is a Canadian junior exploration company focused on its 100%-owned flagship asset, the Tower Mountain Gold Property. The 2,500-hectare property is strategically located 50 km west of Thunder Bay, Ontario, adjacent to the Trans-Canada Highway, providing excellent infrastructure and year-round access. The project centers on a large intrusive complex, with gold mineralization characterized by broad, near-surface, low-to-moderate grade intervals, indicating potential for a large-tonnage, open-pit mining operation. The financial statements indicate the project is subject to a net smelter royalty (NSR) on certain claims and requires small advance royalty payments.