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(i)             0.0           14.8            14.8           1.85
MINTR14-007                0.0           14.7            14.7           2.31
----------------------------------------------------------------------------
MINTR14-006/7(ii)          0.0           30.5            30.5           2.01
----------------------------------------------------------------------------
----------------------------------------------------------------------------
Notes;  (i) previously reported                                             
        Length weighted averages from uncut assays.                         
        Mineralized intervals are open to the north and south.              
        (ii)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.


Recent sampling by B2Gold has identified new gold mineralization located
approximately one kilometre to the north-northeast of trenches MINTR14-006 and
MINTR14-007. The sampling returned three samples with greater than one gram per
tonne gold including 1.86 g/t Au, 1.68 g/t Au and 5.99 g/t Au. The anomalous
gold samples are located well off of the main mineralized trend and the
mineralization is similar in style to mineralization in trenches MINTR14-006 and
MINTR14-007. 


Results for a series of gridded auger holes which have been completed within and
to the northeast of the existing surface anomaly have further defined the nature
and extent of the gold mineralization. The auger anomaly is approximately 125
metres wide with gold assays consistently above 100ppb Au. Trenches MINTR14-006
and MINTR14-007 are located within the extended anomaly. Overall the anomalous
trench and auger rock samples define an area of pervasive gold mineralization
approximately 700 metres long and up to 125 metres wide. Trenching and auger
sampling continues on the Minnesota gold project. 


Updated maps detailing the result of the current exploration program at the
Minnesota Gold Project will be posted on the Company's web site at
www.calibremining.com. 


Quality assurance and quality control procedures include the systematic
insertion of blanks, standards and duplicates into the rock and soil sample
strings. Samples are placed in sealed bags and shipped directly to Acme Labs in
Managua, Nicaragua for sample preparation and then to Acme Labs in Vancouver,
Canada for gold fire assay and ICP-MS multi element analyses. The technical
content in this news release was read and approved by Gregory Smith, P.Geo,
President and CEO of the Company who is the Qualified Person as defined by NI
43-101. 


About Calibre Mining Corp.

Calibre controls a 100% interest in 253 km2 of mineral concessions in the Mining
Triangle of Northeast Nicaragua. Additionally the Company has an option
agreement with IAMGOLD covering 176 km2 of concessions, joint venture
exploration programs underway with B2Gold Corp. on 322.3 km2 of concessions
which includes the Primavera gold-copper porphyry discovery, and has optioned
the 33.6 km2 Rosita gold-copper-silver project to Alder Resources Ltd. Major
shareholders of Calibre include gold producer B2Gold Corp. 


Calibre Mining Corp. 

Greg Smith, P.Geo., President and CEO

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that
term is defined in the policies of the TSX Venture Exchange) accepts
responsibility for the adequacy or accuracy of this release.


FOR FURTHER INFORMATION PLEASE CONTACT: 
Calibre Mining Corp.
Ryan King
604 628-1012
www.calibremining.com
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