Clean Air Metals Drilling Confirms Down-Plunge Extension of the Escape Deposit

On October 20, 2025, Clean Air Metals announced assay results from the first drill hole (EL25-001) in its program testing the down-plunge extension of the Escape Deposit at the Thunder Bay North Project. The hole successfully intersected 53 metres of PGE-Cu-Ni sulphide mineralization, grading 0.52 g/t Platinum (Pt), 0.69 g/t Palladium (Pd), 0.26% Copper (Cu), and 0.17% Nickel (Ni). This intercept confirms the presence of the mineralized system approximately 350 metres beyond the limits of the current mineral resource envelope. Management stated the result is a "step-change" in their outlook for the Escape deposit and "unlocks a huge area for future, potential resource gains."

This news is materially positive as it successfully confirms the company's geophysical and geological model for a significant, 2.5 km extension target at the Escape deposit. This is not an infill drill hole but a strategic step-out that proves the mineralized conduit continues well beyond the known resource. This result follows the highly positive Preliminary Economic Assessment (PEA) released just 11 days prior (October 9, 2025), which was based solely on the existing resource.

From a critical perspective, the grades in this specific intercept are modest and not comparable to the high-grade "ballroom" style results recently drilled at the nearby Current deposit. The market was also partially aware of this success following the September 4, 2025 announcement of a visual intersection of over 50 metres of sulphides in this same hole.

However, the strategic importance of this confirmation outweighs the moderate grades of the single intercept. It de-risks a massive exploration target and provides a clear path to potentially add significant tonnes and years to the mine life outlined in the new PEA. Proving the existence of the system in this large, untested area is the primary achievement here. Future drilling, guided by borehole geophysics, will now focus on vectoring towards higher-grade zones within this newly proven extension.

In summary, the announcement validates a key pillar of the company's growth strategy and adds tangible exploration upside on the heels of a positive economic study. While not a "game-changer" based on grades alone, its strategic importance makes it a material positive catalyst.

Clean Air Metals Inc. is a Canadian exploration company focused on its 100%-owned Thunder Bay North Project, a critical minerals (Platinum, Palladium, Copper, Nickel) project located near Thunder Bay, Ontario. The project consists of two distinct magmatic conduits known as the Current and Escape deposits.

The company's history includes a significant setback in February 2023 when it withdrew a previous resource estimate and PEA due to a material overestimation of metal content at the Current deposit. Following this, the company successfully pivoted its strategy to focus on defining higher-grade zones within the overall resource. This strategy was validated by a series of successful drill programs in 2024 and 2025, culminating in a new PEA (October 2025) outlining a potentially economic, smaller-scale, high-grade underground mining operation utilizing toll-milling. The latest exploration focus is on expanding the resource at the Escape deposit's down-plunge extension.