XXIX Metal’s 65,000 m drilling drive: resource upgrade lens for mine planners
Reviewed by Joe Ashwell

First reported on MINING.com
30 Second Briefing
XXIX Metal has begun a 65,000-metre drilling campaign across its Opemiska and Cooke copper projects in Quebec and the Thierry copper project in Ontario, with two rigs already active at Thierry since July and four more to be mobilised by early January. Around 20,000 metres at Opemiska will target the Bouchard and McNichols eastern vein zones to upgrade part of the 141.2 million tonnes (1.5 billion lb Cu, 1.05 Moz Au) resource for pre-feasibility, while Cooke drilling will test open-pit potential and a maiden MRE as a second mill-feed source. At Thierry, an expanded 25,000-metre programme aims to define the K1 deposit and drill a newly permitted, largely untested corridor, underpinned by a rebuilt 210,000-metre historical database.
Technical Brief
- Nine holes totalling >6,200 m completed at Thierry to date, programme running to March 2027.
- Rebuilt Thierry database consolidates ~210,000 m of historical drilling into a validated 3D geological model.
- K1 deposit now being drilled systematically for the first time in ~40 years, targeting a new MRE.
- Newly granted permits at Thierry open a largely untested corridor flanking K1 to first-pass drilling.
- Opemiska’s October PEA utilised only about half of the 141.2 Mt resource base for economics.
- Strategy at Opemiska prioritises resource category upgrade as the quickest route to enlarging the PFS base.
Our Take
With 141.2 Mt in resources across copper and gold, XXIX Metal now sits in the upper tier of undeveloped Canadian base‑metal stories in our database, which tends to attract mid-tier producers once drilling de-risks continuity and metallurgy.
Running six rigs across Quebec and Ontario through to at least March 2027 signals a push to convert more of the 62.7 Mt indicated resource into mine-planning inventories, a step that typically precedes PFS/FS work in comparable copper projects in our coverage.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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