Calibre and B2Gold Trench Extension Intercepts 30.5 Metres Grading 2.01 g/t Gold at the Minnesota Gold Project, Borosi Concessions, Nicaragua

VANCOUVER, BRITISH COLUMBIA--(Marketwired - June 17, 2014) - Calibre Mining Corp. (TSX VENTURE:CXB) (the "Company" or "Calibre") is pleased to announce results from follow-up trenching and sampling at the Minnesota gold project within the B2Gold Corp. ("B2Gold") (TSX:BTO)(NYSE MKT:BTG) Joint Venture on the Borosi concessions, northeast Nicaragua. Calibre controls a 49.0% interest in the joint venture and B2Gold has a 51.0% interest and is project operator. B2Gold has the right to earn an additional 19.0% in the Borosi concessions joint venture by spending $6.0 million in additional project expenditures over three years. The 2014 exploration program on the B2Gold joint venture is budgeted at $1.2 million.

Highlights

• Trenching at the Minnesota Gold Project has extended gold mineralization intercepting 30.5 metres grading 2.01 g/t Au. The trenching is located within a 700 metre by 125 metre auger sampling gold anomaly.

The latest results on the Minnesota Gold Project have extended the previously defined gold mineralization and have identified a new target located near the main trend.

Results for trenching completed by B2Gold returned 14.7 m grading 2.31 g/t Au in trench MINTR14-007. Trench MINTR14-007 is an extension to the south of Trench MINTR14-006 which intersected 14.8 m grading 1.85 g/t Au (see Calibre New Release dated May 7, 2014). The gold mineralization in the trenches remains open to the north and south.

Table 1 - Trenching Results - Minnesota Gold Project

Trench ID	From (m)	To (m)	Interval (m)	Au (g/t)
MINTR14-006*	0.0	14.8	14.8	1.85
MINTR14-007	0.0	14.7	14.7	2.31
MINTR14-006/7**	0.0	30.5	30.5	2.01

Notes;	* previously reported
	Length weighted averages from uncut assays.
	Mineralized intervals are open to the north and south.
	**Trench MINTR14-006+ MINTR14-007 weighted average assigns no grade to a 1.0m gap left unsampled between the two trenches

The Minnesota target area consists of intrusive hosted veinlets within a structurally prepared area with widespread alteration. The target is defined by a strong 1.75 km x 1.25 km gold in soil anomaly.