Calibre Mining Initiates Maiden Drilling at the 100% Owned Santa Maria Gold-Silver Project on the Borosi Concessions, Nicaragua

VANCOUVER, BRITISH COLUMBIA--(Marketwired - May 1, 2017) - Calibre Mining Corp. (TSX VENTURE:CXB) (the "Company" or "Calibre") is pleased to announce the commencement of diamond drilling on the Company's 100% owned Santa Maria Low Sulphidation Epithermal Gold-Silver Project (the "Project") located within the 876 km2 Borosi Concessions, Northeast Nicaragua.