Calibre Mining Corp. announced 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 Au over 3.4 metres ETW and 8.92 g/t Au over 2.3 metres ETW in Hole BL-23-136; 10.81 g/t Au over 3.4 metres ETW including 19.10 g/t Au over 1.8 metres ETW in Hole BL-23-143; 9.64 g/t Au over 3.3 metres ETW in Hole BL-16-044; and 5.77 g/t Au over 14.5 metres ETW including 14.00 g/t Au over 3.8 metres ETW and 10.00 g/t Au over 2.2 metres ETW in Hole GTH-BL-23-006.

Silver highlights from the Eastern Borosi drill program: 1,431.6 g/t Ag over 2.9 metres ETW including 1,240.5 g/t Ag over 1.4 metres ETW in Hole BL-15-018; 642.3 g/t Ag over 5.0 metres ETW including 1,014 g/t Ag over 2.0 metres ETW in Hole BL-15-017; 401.8 g/t Ag over 3.5 metres ETW including 925.0 g/t Ag over 1.3 metres ETW in Hole BL-23-111; 318.1 g/t Ag over 1.5 metres ETW in Hole BL-23-112; 307.3 g/t Ag over 2.7 metres ETW in Hole BL-23-115; 227.0 g/t Ag over 9.0 metres ETW including 247.8 g/t Ag over 4.8 metres ETW and 437.0 g/t Ag over 1.3 metres ETW in Hole BL-23-131; and 181.9 g/t Ag over 2.8 metres ETW including 288.5 g/t Ag over 1.7 metres ETW and 162.6 g/t Ag over 5.8 metres ETW including 225.2 g/t Ag over 2.9 metres ETW in Hole BL-23-133.