Cadillac’s Kerr-Addison drilling: open-pit resource and design notes for engineers
Reviewed by Joe Ashwell

First reported on MINING.com
30 Second Briefing
Lassonde-backed Cadillac Mines reports infill drilling at the Kerr-Addison project in Ontario, with standout hole KAD26-428T cutting 23 m at 3.08 g/t gold from 259 m, including 6.4 m at 5.26 g/t, and KAD26-397 returning 38 m at 2.13 g/t from 192 m, supporting a larger open-pit resource case. The company is about two-thirds through a 17,850 m infill programme within the current pit shell, part of a 145,000 m, C$65 million 2026 drilling budget using 11 diamond rigs. Kerr-Addison currently hosts 78.5 Mt indicated at 1.34 g/t (3.38 Moz) and 25.9 Mt inferred at 2.66 g/t (2.21 Moz), with new drilling targeting lesser-tested footwall zones and step-outs northeast of existing blocks.
Technical Brief
- Hole KAD25-386 intersected 13 m at 1.52 g/t from 62 m downhole, adding shallow mineralisation.
- KAD26-476 returned 9.2 m at 1.94 g/t from 66 m, supporting near-surface pit inventory.
- Assays reported cover the first 29 infill diamond drillholes completed within the current pit shell.
- Eleven diamond rigs are active across Cadillac’s portfolio, with the majority allocated to Kerr-Addison.
- Current work specifically targets lesser-drilled footwall structures inside the pit, not just the main break.
- Step-out drilling is also testing immediately northeast of existing resource blocks for new pit-extension ounces.
- The main break at Kerr-Addison has historically produced over 10 Moz of gold, constraining structural models.
- Kerr-Addison lies on the Cadillac-Larder Lake fault within the Abitibi Greenstone belt, 40 km east of Kirkland Lake.
- 2026 exploration budget totals about C$65 million for 145,000 m of drilling across Kerr-Addison, Larder and Galloway.
Our Take
Cadillac Mines’ Kerr-Addison and Gold Candle positions in the Abitibi Greenstone belt, combined with Agnico Eagle Mines’ increased equity stake highlighted in the July 2026 IPO coverage, suggest the asset could be groomed as a longer-term feed or regional partner for larger gold producers already entrenched in Ontario and Quebec.
The 3.38 million oz indicated and 2.21 million oz inferred gold at Kerr-Addison, on a 40 km strike length, put Cadillac toward the upper end of single-asset resource scale among Abitibi-focused names in our database, which typically improves optionality for phased open-pit plus underground development concepts.
With Pierre Lassonde, Franco-Nevada and Pan American Silver collectively holding notable equity positions in Cadillac Mines, the project is unusually well positioned for future royalty/stream or JV-style funding solutions compared with most Ontario gold developers in our recent 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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