Calibre Mining Drilling Expands two Gold-Silver Discoveries intersecting 7.45 metres grading 9.73 g/t AuEq and 4.10 metres grading 10.52 g/t AuEq on the Eastern Borosi Project, Northeast Nicaragua

Calibre Mining (TSX-V:CXB) (the “Company” or “Calibre”) is pleased to report final drilling results for the Q4 2017 diamond drilling program on the Eastern Borosi Gold Project, Nicaragua (the “Project”). Exploration and drilling on the Project is being funded by Calibre’s JV partner IAMGOLD Corporation (“IAMGOLD”).

President and CEO Greg Smith stated:

“These additional high grade drill results from recently discovered gold and silver vein structures on the Eastern Borosi Project highlight the potential for further discoveries of high grade gold-silver mineralization.

The Cadillac and Veta Loca vein systems are new discoveries that are not included in the on-going NI 43-101 maiden resource estimate currently nearing completion on the Eastern Borosi Gold-Silver Project.”

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