Calibre Mining Intercepts High-Grade Gold & Silver Mineralization from Several Targets at Eastern Borosi Mine Complex; Drilling Intersects Include 10.81 g/t Gold over 3.4 metres, 9.64 g/t Gold over 3.3 metres, 1,431.6 g/t Silver over 2.9 metres

VANCOUVER, British Columbia, April 15, 2024 (GLOBE NEWSWIRE) — Calibre Mining Corp. (TSX: CXB; OTCQX: CXBMF) (the “Company” or “Calibre”) is pleased to announce drill results from its 2023 resource conversion and expansion program within its 176 km² Eastern Borosi Mine Complex (“Eastern Borosi”) located in northeastern Nicaragua, adjacent to a larger, 100%-owned, prolific 7,281 km² Atlantic Mineral Concession package.

Gold highlights from the Eastern Borosi drill program

• 6.87 g/t Au over 7.0 metres Estimated True Width (“ETW”) including 19.80 g/t Au over 1.1 metres ETW and 6.08 g/t Au over 3.8 metres ETW in Hole BL-23-118;
• 5.72 g/t Au over 8.9 metres ETW including 8.21 g/t Au over 4.8 metres ETW and 7.50 g/t Au over 1.3 metres ETW in Hole BL-23-131;
• 8.46 g/t Au over 5.8 metres ETW including 14.80 g/t Au over 2.9 metres ETW in Hole BL-23-133;
• 7.06 g/t Au over 17.7 metres ETW including 14.70 g/t Au over 3.3 metres ETW and 12.69 g/t…