Trailbreaker Resources Ltd. (TBK.V) has mobilized a field team to its Coho property in central British Columbia to initiate a surface exploration program in advance of a planned September 2026 drill campaign. The program focuses on two priorities: reconnaissance exploration along the property's underexplored western boundary, known as the Masu zone, and ground-truthing of drill hole locations at the Coho zone, a copper-gold (Cu-Au) porphyry target.
Daithi Mac Gearailt, CEO of Trailbreaker, stated, "The Coho Cu-Au porphyry target represents a compelling opportunity, and we're moving purposely toward our September drill program. Our field team is on the ground now, ground-truthing drill locations and systematically sampling territory that has had very little historic exploration."
The 8,000-hectare Coho property is located 90 km north of Fort St. James, BC, and 30 km west of Centerra Gold's Mount Milligan Cu-Au porphyry deposit. The surface exploration program at the Masu zone follows up on results released by Pacific Empire Minerals (PEMC) in January 2026 on the adjacent Trident property. Drilling at Trident's 'A zone' returned 240.0 meters of 0.64% Cu, 0.41 g/t Au, and 2.8 g/t Ag, as reported in PEMC's January 21, 2026 news release. The Masu zone lies 3.3 km east of the A zone. The program will include prospecting, geological mapping, and a grid soil geochemical survey.
On May 25, 2026, Trailbreaker announced plans to drill the Coho zone, the property's primary target, with an inaugural diamond drill program set for September 2026. The Coho zone is a Cu-Au porphyry target with recently completed property-wide geochemical and geophysical surveys. The zone hosts a coincident chargeability and resistivity anomaly associated with high-grade gold and copper values from surface rock grab samples. Concurrent to Masu zone exploration, Trailbreaker geologists will ground-truth proposed drill locations at the Coho zone and perform further geological mapping.
The Coho property, acquired through an option agreement in May 2025, is situated within the Quesnel tectonic terrane, a district known for prolific alkalic Cu-Au porphyry deposits. It is 30 km west of Centerra Gold's Mount Milligan deposit, a producing mine with reserves of 1.7 billion lbs Cu and 4.3 million oz Au, according to Centerra Gold's website. To the north, Pacific Ridge Resources' Chuchi property returned 382.0 m of 0.19% Cu, 0.12 g/t Au, and 0.47 g/t Ag from the BP zone in 2024 drilling, as per their November 25, 2024 news release.
The Coho zone is defined by a 650 m x 550 m Cu-Au-Ag surface geochemical anomaly within diorite, spatially associated with an ENE-trending fault zone and gabbro dykes. Historic surface grab samples returned values up to 16.15 g/t Au, 16.35% Cu, and 67.3 g/t Ag. A 2022 airborne ZTEM survey and 2023 ground-based induced polarization survey identified an interpreted 400 m x 250 m x 200 m-deep porphyry intrusive complex with a two-limbed IP chargeability anomaly spanning over 1.4 km.
Trailbreaker believes the Coho zone may represent a Cu-Au porphyry system similar to surrounding prospects and deposits, part of a cluster along the margin of the Hogem batholith. The Coho zone has never been drilled, making this exploration program a significant step toward evaluating its potential.
