B2Gold Goose cost cut and Q4 surge: production and plant notes for mine planners
Reviewed by Tom Sullivan

First reported on MINING.com
30 Second Briefing
B2Gold has cut its 2026 all-in sustaining cost guidance to C$3,122–C$3,374 (US$2,230–$2,410) per oz, about 6% lower at the midpoint, after repairs and upgrades to the fire-damaged crushing circuit at the Goose mine in Nunavut removed a key throughput bottleneck. Goose must now deliver about 74,000 oz in Q4—an 86% increase on Q3 output of 39,973 oz—to hit the bottom of its 170,000–200,000 oz annual target, with the repaired fixed crusher and an enclosed mobile crusher needing to run reliably through the Arctic winter. Group guidance relies on strong performance at Masbate (Philippines), Otjikoto (Namibia) and lower royalties at Fekola (Mali), while waste stripping has started at the Fekola Regional Menankoto permit area ahead of first toll-milled ore next year.
Technical Brief
- Goose’s Q3 all-in sustaining cost was US$4,816/oz, heavily impacted by fire-repair and mobile-crushing spend.
- Mill throughput since first gold in June 2025 has been constrained primarily by fixed-crusher reliability issues.
- April’s crusher fire forced a switch to mobile crushing while the permanent plant was repaired and upgraded.
- The mobile crusher is being fully enclosed to maintain mechanical availability and throughput in Nunavut winter conditions.
- Goose Q3 output rose to 39,973 oz from ~12,900 oz in Q2 as partial crushing capacity returned.
- Goose’s site-level AISC guidance remains US$2,670–$2,970/oz, with actuals expected near the upper bound.
- Waste stripping at the Fekola Regional Menankoto permit started in October, ahead of toll-milling regional ore next year.
- Group Q3 production of 193,321 oz generated US$48 million free cash flow after completing prepaid gold sales in June.
Our Take
Goose’s challenges come as B2Gold is simultaneously advancing the $740 million Gramalote gold project in Colombia, where a November ANLA hearing is a prerequisite for construction, so any capital or schedule slippage in Nunavut could constrain how aggressively the company phases that build-out.
Our coverage of Canada’s 22% Q3 gold output jump notes Goose as a key new contributor, which means any underperformance or delay at the mine will have an outsized impact on both B2Gold’s 2026 output target and Canada’s near-term production profile.
With Nunavut devolution set for 2027, Goose is one of the first large gold assets that will straddle federal and territorial regulatory regimes, giving B2Gold a front-row position in shaping how future permitting and benefit agreements are structured in the territory.
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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