Agnico’s Barnat Setback Tests the Bridge to Odyssey’s Million-Ounce Plan

Agnico Eagle’s wall movement at the Barnat open pit has turned Canadian Malartic’s transition from open-pit mining to the Odyssey underground mine into a tighter scheduling problem.

The company expects the July 1 rock-mass movement to cut second-half 2026 production at Canadian Malartic by 60,000 to 80,000 ounces and could reduce output by as much as 150,000 ounces in each of 2027 and 2028. Agnico now expects group production near the lower end of its 3.3 million to 3.5 million ounce guidance range.

The immediate financial damage is manageable for a producer of Agnico’s scale. The more important issue is whether stockpiles, Odyssey ramp-up and satellite deposits can bridge the gap without allowing a geotechnical event in a mature pit to disrupt the complex’s longer-term growth plan.

Barnat was supposed to keep supplying the 60,000-tonne-a-day Canadian Malartic mill until early 2029. Mining has been suspended while technical teams assess the north wall, with lower-grade stockpiles replacing planned Barnat ore. That preserves plant utilisation, but lower grade usually means fewer ounces from the same processing capacity and can push unit costs higher.

The timing matters because Canadian Malartic is moving between two mining systems. Open-pit production is winding down while Odyssey expands underground. Odyssey is expected to produce more than 500,000 ounces a year from 2030 and use roughly one-third of the mill, while Agnico’s broader “Fill the Mill” strategy targets about 1 million ounces a year from the complex from 2033 using Odyssey, Marban, Wasamac and additional underground capacity.

A temporary Barnat shortfall therefore does not invalidate the long-term plan, but it exposes the transition risk. Odyssey’s first shaft loading station is scheduled for production in the second quarter of 2027, leaving limited room for delays if Barnat remains constrained. The complex also depends on sequencing stockpiles, underground development and future satellite feed so that excess mill capacity becomes an advantage rather than a fixed-cost burden.

The geological base remains large. Canadian Malartic held 9.05 million ounces of proven and probable reserves at the end of 2025, plus 4.12 million measured and indicated resource ounces and 13.56 million inferred ounces. Agnico budgeted about $32.6 million for 190,700 metres of drilling at the complex in 2026, primarily around East Gouldie, Eclipse and other Odyssey zones.

That resource depth gives management options, but not instant production. Converting resources, developing underground headings and commissioning shafts take years. Stockpiles can soften a short disruption; they cannot permanently replace higher-grade scheduled ore.

The incident also highlights why Agnico’s operating premium depends on execution, not only jurisdiction. Canadian assets reduce sovereign and permitting risk, but large open pits still carry geotechnical risk, while underground replacements require substantial capital and precise commissioning. Higher gold prices give the company more financial room to absorb disruption, yet royalties, sustaining capital and lower grades can still dilute the benefit.

Agnico entered the year with a strong balance sheet and generated $732 million of free cash flow in the first quarter despite a $1.3 billion prior-year tax payment. That liquidity means Barnat is unlikely to threaten the company’s broader project pipeline. The question is whether management can contain the operational knock-on effects while continuing to fund Odyssey, Hope Bay and its newly consolidated Finnish growth platform.

The next catalyst is a detailed geotechnical restart plan for Barnat and updated production and cost assumptions for 2027 and 2028. Investors should focus less on whether Agnico can absorb 60,000 to 80,000 lost ounces this year and more on whether the interruption compresses the handover window to Odyssey.

Canadian Malartic’s long-term value still rests on becoming a large underground-led district with underused mill capacity filled by multiple ore sources. Barnat has made the route to that outcome less smooth. The test now is whether Agnico can keep the bridge intact.