Step-out drilling expands Boundary Zone, revealing high-grade zinc, lead, and silver beyond existing resource estimate.

Fireweed Metals Corp. Sept. 26 announced a significant expansion of the Boundary Zone at its Macmillan Pass project in Yukon, Canada, revealing new high-grade mineralization that extends beyond the previously defined resource area-which, coming on the heels of a major resource update earlier this year, further enhances the potential of this rapidly growing district.

In early September, Fireweed released an updated mineral resource estimate for the Macmillan Pass project, which marked a 300% increase in zinc-equivalent indicated resources.

Split between its Tom, Jason, Boundary, and End Zone targets, MacPass now hosts 56 million metric tons of indicated resource averaging 5.49% (6.78 billion pounds) zinc, 1.58% (1.95 billion lb) lead, and 24.2 grams per metric ton (43.54 million ounces) silver; plus 48.49 million metric tons of inferred resource averaging 5.15% (5.5 billion lb) zinc, 2.08% (2.23 billion lb) lead, and 25.3 g/t (39.42 million oz) silver.

Following the completion of a substantial 2023 drill program, Fireweed planned an ambitious exploration program for this year, aiming to drill 14,000 meters across its MacPass project. With 8,000 meters allocated for Boundary, Tom, and Jason, and the remaining 6,000 meters focused on testing new exploration targets, the company sought to expand its known resources and identify new zones of mineralization across its 977-square-kilometer (377 square miles) underexplored, zinc-lead-silver-rich district.

As the 2024 exploration season progressed, Fireweed expanded its original plans, surpassing the initial 14,000 meters to over 16,000. This included additional step-out holes that extended mineralization at three more advanced deposits, as well as the first tests of new prospects identified through geophysical surveys conducted earlier in the year.

With the drilling program completed, the company is now analyzing results. Early indications from step-outs, particularly at Boundary Zone, point to significant resource expansion potential. One of the more notable intercepts, 45 meters outside the existing resource pit shell, suggests the potential for further growth, with mineralization remaining open along strike and at depth.

"We are excited to report the first results of the season with an excellent intercept on the far-western side of Boundary Zone," said Fireweed Metals Interim CEO Peter Hemstead. "The style of mineralization associated with this high-grade result indicates there is potential for a feeder system within this part of the deposit, and an extension of the known mineralization to the west, 45 metres beyond the existing MRE pit shell."

Fireweed Metals Corp.

2024 and earlier drilling results, showing projected resource areas, the 2024 pit shell outline, and latest drill hole cross-section line.

Highlights from the first two holes reported include:

• 92.15 meters averaging 8.61% zinc, 2.60% lead, and 42.7 g/t silver from a depth of 428.05 meters in hole NB24-001, including 11.21 meters averaging 21.40% zinc, 6.66% lead, and 107.6 g/t silver.

• 3.05 meters averaging 2.23% zinc, 6.16% lead, and 80.3 g/t silver from 764.73 meters in NB24-008.

The program utilized directional drilling to save an estimated 1,727 meters, bringing the effective meterage to approximately 17,740 meters across 49 step-out and exploration holes. This included 26 holes at Boundary Zone, six at Tom South, two at Jason, and 15 at exploration targets throughout the broader district.

"We are pleased to expand the drill program to over 16,000 metres and are looking forward to the additional results from Boundary Zone, Tom, and Jason, as well as the outcomes from the large regional exploration program that we embarked upon this year along the Macpass prospective corridor," said Hemstead.

In parallel, the company conducted a comprehensive regional exploration program, integrating geochemical and geophysical surveys, including ground-based gravity, VTEM, LiDAR, and Orthophoto surveys, to provide full coverage of the property.

Assay results for the remaining drill holes will be released as they are analyzed and confirmed.