Talon Metals Extends High-Grade Vault Zone with Step-Out Drilling in Multiple Sulphide Stacks

On December 11, 2025, Talon Metals announced additional successful step-out drill results from the high-grade Vault Zone at its Tamarack Nickel-Copper-Cobalt Project in Minnesota. The drilling confirmed the lateral continuity of multiple stacked massive sulphide horizons. Key intercepts include drill hole 25TK0565, which returned 19.11 meters grading 6.39% Nickel Equivalent (NiEq), including a very high-grade copper interval of 3.22 meters grading 17.40% Copper Equivalent (CuEq). Management stated that the Vault Zone is emerging as a high-grade system with substantial expansion potential and that drilling is being accelerated with three operational rigs.

This news is materially positive as it successfully extends and further de-risks the "Vault Zone," a recent discovery that has yielded some of the highest-grade intercepts in the project's history. The results confirm the company's geological model of multiple, stacked high-grade massive sulphide lenses below the main Tamarack resource area.

While the initial discovery of the Vault Zone earlier in 2025 was a "Game Changer" event, this news serves as a critical confirmation of its scale and continuity. The reported grades, particularly the significant copper enrichment (up to 4x higher than the main resource area), are exceptional and have the potential to significantly enhance the project's economics. The two reported intercepts in hole 25TK0565, with grades of 6.39% NiEq and 9.90% NiEq, are world-class and build upon the spectacular results from holes 16TK0250 and 25TK0563 announced earlier in the year.

The announcement demonstrates that the company's integrated exploration model, using advanced borehole geophysics to guide drilling, is highly effective. By proving up continuity between drill holes, Talon is systematically building tonnage in this new, high-grade area. This continuous exploration success is the primary driver of the stock's significant re-rating over the past year. However, it should be noted that these results are still from early-stage exploration drilling, and the Vault Zone has not yet been incorporated into a formal resource estimate.

Talon Metals Corp. is a mineral exploration and development company focused on supplying critical minerals like nickel and copper for the North American battery and clean energy supply chains. Its flagship asset is the Tamarack Nickel-Copper-Cobalt Project in central Minnesota, an advanced-stage, high-grade nickel sulphide project. Talon holds a 51% interest and is the operator of a joint venture with Rio Tinto, with the right to earn-in to 60%. The company is also exploring a large land package in Michigan, where it made the new Boulderdash nickel-copper discovery. Talon plans to mine ore at Tamarack and ship it via rail to a proposed "Beulah Minerals Processing Facility" (BMPF) in North Dakota for processing, for which it has received significant U.S. government grant funding.