Boliden's Garpenberg Mine Faces 30% Capacity Cut After Seismic Damage
Event summary
- Garpenberg mine's seismic activity has decreased, but production will resume at 30% of guided capacity (3.7 Mton/year) in Q2 2026.
- Q1 2026 throughput was 0.8 Mton vs. expected 0.9 Mton, with EBITDA negatively impacted by SEK -400 million.
- Major damage in upper parts of Lappberget ore body; repairs to ventilation, electrical, and water systems will take weeks.
- Zinc grades expected to deteriorate slightly; silver grades may improve.
- Analyst conference scheduled for March 26, 2026, to discuss further.
The big picture
Boliden's Garpenberg mine disruption highlights the operational risks in deep underground mining, particularly in seismically active regions. The 30% capacity reduction underscores the challenge of maintaining stable production in Europe's zinc and silver supply chain. Investors will scrutinize Boliden's ability to manage repair costs while navigating potential commodity price volatility.
What we're watching
- Production Recovery
- Whether Boliden can sustain gradual production increases in H2 2026 amid ongoing repairs.
- Commodity Impact
- How reduced zinc supply may affect market prices, given Garpenberg's role in European zinc production.
- Operational Costs
- The pace at which repair expenses and lower production volumes pressure Boliden's margins.
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