Calibre and B2Gold Initiate Trenching Program on the Minnesota Gold-Copper Project, Borosi Concessions, Nicaragua

VANCOUVER, BRITISH COLUMBIA--(Marketwired - Feb. 18, 2014) - Calibre Mining Corp. (TSX VENTURE:CXB) (the "Company" or "Calibre") is pleased to announce results from follow-up rock and soil sampling at the Minnesota gold-copper project within the B2Gold Corp. ("B2Gold") (TSX:BTO)(NYSE MKT:BTG) Joint Venture on the Borosi concessions, northeast Nicaragua. Calibre controls a 49% interest in the joint venture and B2Gold has a 51% interest and is project operator. As announced on October 9^th, 2013 Calibre has executed a Definitive Joint Venture Agreement with B2Gold that grants B2Gold the right to earn an additional 19% in the Borosi concessions joint venture by spending $6 million in additional project expenditures over three years. Each 12 months of the option B2Gold must complete a minimum $1.5 million of exploration and development expenditures on the property.

At least four new trenches totaling 400 linear metres will be excavated at prioritized locations along the Minnesota gold trend. The primary goal of the trenching program will be to expand on the mineralization observed at channel sample locations MNTR13-001 (7.5 metres grading 3.93 g/t Au) and MNTR13-002 (9.2 metres grading 4.17 g/t Au) located in the centre of the eastern 500 metre x 250 metre gold and copper soil anomaly. In addition to the trenching program the existing soil grid will be expanded to the east to follow-up on the highly anomalous soil samples collected in the recent test pits (PR13S2221 - 2.40 g/t Au).

Recent Minnesota Project Rock and Soil assay results include:

Prospect	Sample ID	Sample Type	Au (g/t)
Minnesota	P13R0755	Rock	28.90
Minnesota	P13R0653	Rock	3.69
Minnesota	P13R0828	Rock	3.08
Minnesota	P13R0744	Rock	2.98
Minnesota	P13R0664	Rock	2.24
Minnesota	P13R0858	Rock	1.35
Minnesota	PR13S2221	Soil	2.40
Minnesota	PR13S2199	Soil	1.79
Minnesota	PR13S2210	Soil	0.90
Minnesota	PR13S2217	Soil	0.59
Minnesota	PR13S2324	Soil	0.34

- Soil samples collected at a range of depth in 2m x 2m x 2m exploration test pits

Greg Smith, President and CEO of Calibre stated: "The recent high grade rock and soil sample results from Minnesota continue to emphasize the strong nature of gold mineralization on the property. Step-out sampling and geologic mapping has identified multiple targets along the two kilometre gold trend which will be investigated by trenching. Given the encouraging results from the previous channel sampling program and the widespread nature of gold mineralization on the Minnesota project we look forward to the current trenching program expanding the potential of this gold-copper system."