Summa Silver Corp. reported silver and gold recovery results from initial scoping-level metallurgical test work from its high-grade silver-gold Mogollon Project near Silver City, New Mexico (the Mogollon Project). Results demonstrate strong recoveries of silver and gold from the Consolidated target.

Key Highlights · Outstanding Silver and Gold Recoveries: Two representative composite samples from the Queen Vein featured recoveries ranging from 96.2% to 97.9% for silver and 97.7% to 97.8% for gold from flotation concentrates. High-Grade Concentrate Produced: Both composite samples produced a high-grade concentrate with grades that averaged 2,122 g/t silver and 77 g/t gold. Conventional Milling Potential: The demonstrated recoveries were produced from a sample grind size of 80% of particles passing 75 microns or smaller which is typical in conventional milling processes.

Importance of Gravity Separation: The test work also showed that prior to flotation, gravity separation improved recoveries for silver and gold significantly. Next Steps: With multiple targets planned for drilling, the Company will initiate continued metallurgical test work as more zones are drilled.