Trailbreaker Resources Expands High-Grade Gold Structure at Atsutla Project in British Columbia

Trailbreaker Resources Ltd. has announced results from its 2025 exploration program at the Atsutla Gold project in northwestern British Columbia, revealing significant expansion of high-grade gold mineralization and discovery of new copper-gold-silver showings. Detailed prospecting and mapping in the Highlands zone area has expanded the known footprint of high-grade gold showings and led to discovery of new high-grade copper-gold-silver showings on recently acquired claims.

The 2025 program focused on exploring the continuity of a shallowly-dipping shear structure discovered during previous exploration, which hosts high-grade gold-bearing quartz veins that previously returned assays up to 630 g/t Au. The structure's continuity was explored on recently acquired claims, expanding the Highlands zone structural feature to a 1.0 km x 1.2 km area. A zone of high-grade copper and silver, termed the Highlands North zone, was discovered 1.1 km north of the high-grade gold showings.

Gold at the Highlands zone is found within quartz veins ranging from 10 cm to 60 cm thick occurring within a continuous, shallow-dipping shear structure. During 2025, this structure was traced along the side of a ridge for 1.0 km in a NE-SW direction. Rock samples taken from the northeast corner returned assays up to 221.6 g/t Au, and rocks taken from the southwest corner returned assays up to 9.32 g/t Au. The highest gold value returned, 401.8 g/t Au with 493 ppm Ag, was obtained from a rock taken 140 m from previously discovered high-grade showings.

The structure was traced for an additional 1.2 km to the west onto newly acquired claims, where assays returned values up to 4.83 g/t Au. The newly discovered Highlands North zone yielded up to 1.65% Cu, 5.92 g/t Au, and 551 ppm Ag from separate rocks. The high-grade copper values were returned from more steeply dipping quartz veins from 20 cm to 80 cm thick, hosting chalcopyrite, bornite, malachite, azurite, and pyrite.

Mineralization at the Highlands zone is related to a much larger system known as Atsutla West, which includes the Christmas Creek and Snook zones. Combined, this area covers 5.0 km x 4.3 km. Trailbreaker's team interprets the gold mineralization to be orogenic in nature, with multiple gold ± silver ± copper-bearing shear zones related to larger faults occurring in the area. The company's team has interpreted the shear structure delineated at the Highlands zone to be continuous, with similar structures found at the Christmas Creek zone 1.5 km to the east, and the Snook zone 4.5 km to the north.

Daithi Mac Gearailt, CEO of Trailbreaker, commented that the Highlands zone continues to exceed expectations, noting that its footprint expands with each campaign and emphasizing that this is a new discovery where high-grade gold and silver have been discovered at surface over multiple kilometers. The area has never been drilled and represents only one part of the story at the Atsutla Gold project.

The 2025 exploration program consisted of the collection of 147 soil samples and 77 prospecting grab samples during late August and early September. Final assays were not received until late December due to multiple re-analyses of high-grade gold, copper, and silver as well as additional QA/QC completed by Bureau Veritas Labs. Statistical analysis of rock and soil sample assays in the Highlands zone show that gold correlates with mercury, selenium, lead, silver, antimony, copper, and arsenic.

Reconnaissance soil sampling to the west of the Highlands North zone returned values up to 66 ppb Au, suggesting potential for additional mineralization in this direction. Rock sampling indicates potential for further shear-hosted mineralized quartz veins at lower elevations along the slope, though much of this area is masked by a thick talus apron. Further rock sampling and geological mapping is warranted to test for their presence.

The Highlands zone and greater Atsutla West area are fully permitted for drilling. During the 2025 program, the Trailbreaker team ground-truthed potential drill pads to test the shear structure. The Swan target, situated 26 km to the southeast, is also fully permitted for drilling. The two areas represent different deposit models: Atsutla West is an orogenic Au target while Swan is a porphyry Cu-Au-Ag target. Trailbreaker's 100%-owned Atsutla Gold project is located 70 km south of the Yukon-British Columbia border and covers over 40,000 hectares of ground with very limited historic exploration.