Sunshine Silver advances mine readiness, targets feasibility Q2 2027 and production in late 2028

Sunshine Silver reported substantial progress on underground development, infrastructure upgrades and site preparation as it targets a feasibility study in Q2 2027 and return to production in late 2028.

Key Highlights:

• Advanced ~1,200m underground development in H1 2026 and expects ~1,300m more in H2; remaining 2026 work to finish by year-end.
• Completed ~47,600m of a 50,000m infill drilling program as of Sept 30, 2026; additional drill results expected before year-end.
• Initiated Silver Summit multiphase hoist and shaft upgrades; new production hoist commissioned at Jewell Shaft in May 2026.
• Installed ~1,200m of new underground rail with ~1,900m more planned by year-end to improve logistics and safety.
• Legacy mill demolition underway (since 2025) to complete by year-end, preparing site for a new processing facility sized for ~1,000 tpd, upgradable to ~2,000 tpd.

Original SEC Filing: Sunshine Silver Mining & Refining Co [ SSMR ] - 8-K - Oct. 19, 2026