Trailbreaker Resources Ltd. (TBK.V) has announced the mobilization of a field team to its Coho property in central British Columbia to initiate a surface exploration program, setting the stage for a planned September 2026 drill campaign. The program focuses on two key areas: reconnaissance exploration along the 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.
The 8,000-hectare Coho property, located 90 km north of Fort St. James, BC, and 30 km west of Centerra Gold's Mount Milligan Cu-Au porphyry deposit, is situated within the Quesnel tectonic terrane, a district known for prolific alkalic Cu-Au porphyry deposits. CEO Daithi Mac Gearailt 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 surface exploration at the Masu zone follows up on results released by Pacific Empire Minerals (PEMC) in January 2026 on the contiguous Trident property, where drilling at the 'A zone' returned 240.0 m of 0.64% Cu, 0.41 g/t Au, and 2.8 g/t Ag (source). The Masu zone is located 3.3 km east of the A zone, and 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, a Cu-Au porphyry target with a recently identified coincident chargeability and resistivity anomaly associated with high-grade gold and copper values from surface rock grab samples. The Coho zone has never been drilled, though limited historical drilling occurred on other claims. Concurrent with Masu zone exploration, geologists will ground-truth proposed drill locations at the Coho zone and perform further geological mapping.
The Coho zone is defined by a 650 m x 550 m Cu-Au-Ag surface geochemical anomaly within diorite and is spatially associated with an ENE-trending fault zone. Historic surface grab samples returned values up to 16.15 g/t Au, 16.35% Cu, and 67.3 g/t Ag. Recent geophysical surveys, including a 2022 airborne ZTEM survey and a 2023 ground IP survey, identified an interpreted 400 m x 250 m x 200 m-deep porphyry intrusive complex with a two-limbed IP chargeability high anomaly spanning more than 1.4 km.
The property is located 30 km west of Centerra Gold's Mount Milligan mine, which has current reserves of 1.7 B lbs Cu and 4.3 Moz Au (source). 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 (source). The Coho zone is located 4.5 km south of the BP zone and is interpreted to be along the same fault structure. Alkalic porphyry deposits commonly occur in clusters, and Trailbreaker believes the Coho zone may represent a similar Cu-Au porphyry system, part of a cluster along the margin of the Hogem batholith.
This news matters as it signals continued exploration activity in a mining-friendly jurisdiction, with potential to delineate a new copper-gold deposit in a region hosting major mines. For industry leaders, the advancement of the Coho property could impact mineral supply chains and highlight the importance of systematic exploration in underexplored areas. The upcoming drill program in September will be a key catalyst for Trailbreaker and its shareholders.
