Calibre Mining Continues to Intercept High-Grade Gold Mineralization at Its Eastern Borosi Mine Complex; Drilling Intersects Include 13.24 g/t Gold Over 5.8 Metres and 11.62 g/t Gold Over 3.8 Metres

VANCOUVER, British Columbia, Aug. 20, 2024 (GLOBE NEWSWIRE) — Calibre Mining Corp. (TSX: CXB; OTCQX: CXBMF) (the “Company” or “Calibre”) is pleased to announce drill results from its 2024 resource conversion and expansion program within the Guapinol open pit area on the Company’s 176 km² Eastern Borosi Mine Complex (“Eastern Borosi”) in northeastern Nicaragua. This prolific land package sits adjacent to a larger, 100%-owned, 7,281 km² Atlantic Mineral Concession package which has high potential for the discovery of both epithermal gold-silver and porphyry copper-gold systems.

Gold highlights from the Eastern Borosi drill program

• 13.24 g/t Au over 5.8 metres Estimated True Width (“ETW”) including 18.52 g/t Au over 4.0 metres ETW in Hole GP-24-182;
• 9.24 g/t Au over 6.2 metres ETW including 17.45 g/t Au over 3.1 metres ETW in Hole GP-24-189;
• 11.62 g/t Au over 3.8 metres ETW including 22.36 g/t Au over 1.9 metres ETW in…