Calibre Mining Expands 100% Owned Concessions to 586 Square Kilometres, Borosi Mining District, Northeast Nicaragua

VANCOUVER, BRITISH COLUMBIA--(Marketwired - March 15, 2016) - Calibre Mining Corp. (TSX VENTURE:CXB) (the "Company" or "Calibre") is pleased to provide an update on activities and advancements on its 100% Owned Projects within the Borosi Concessions, Nicaragua. Calibre controls 100% of 586 km² of concessions in the prolific Borosi Mining District which remains largely underexplored for porphyry gold-copper deposits, epithermal gold-silver systems and gold-copper-silver skarn mineralization.

Highlights - 100% Owned Calibre Concessions

• Calibre has acquired a 100% interest in 122 km² of concessions in the historic Borosi Mining District of Northeast Nicaragua that was previously within the B2Gold Joint Venture

• Newly acquired, 100% owned high priority gold targets include: the Minnesota, Terciopelo and Santa Maria gold projects

• The 122 km² Rosita District is host to a series of advanced gold targets including the Santa Maria gold project that hosts a well-defined, low sulphidation, epithermal gold system with gold veins identified over a strike length of 800 metres. High grade vein grab sample results from Santa Maria include: 64.1 g/t Au, 22.3 g/t Au and 20.9 g/t Au

• The 214 km² Northern Siuna District includes the advanced Monte de Oro Project drilled in 2015 as well as additional La Luz look-alike anomalies including; Cerro Aza, Roskilette, and Mina Victoria

• The 73 km² Carpatos District includes several kilometre-scale targets defined by previous work including rock and soil sampling

• The 115 km² El Paste Gold Project was tested by a stream sediment sampling program in H2 2015 which generated significant anomalies requiring follow-up work.

President and CEO, Greg Smith stated: "With the addition of the 122 km² Rosita District previously within the B2Gold Joint Venture Calibre now controls 100% of more than 586 km² within this highly prospective Historic Borosi Mining Triangle District. Each of the four District-scale areas was advanced in 2015 with high priority targets including high grade epithermal vein systems and near surface bulk tonnage gold zones."