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Calibre Further Expands 100% Owned Montes de Oro Gold Project - Additional Trenching Intercepts 19.3 metres grading 2.71 g/t Gold

Calibre Montes de Oro Map

Calibre Mining and B2Gold Sign Definitive Joint Venture Agreement

Calibre Expands Trench Intercept at the 100% Owned Montes de Oro Target to 52.3 metres grading 7.1 g/t Gold

Montes De Oro Trench Location Plan Map

Calibre Provides Update on Borosi Project, Nicaragua.

Calibre to Sell a 100% Interest in the Point Leamington Project, Newfoundland to Raystar

Calibre Announces Updated NI 43-101 Inferred Resource Estimate of 14.1M tonnes grading 1.86 % Zn, 0.42 % Cu, 0.02 % Pb, 1.07 g/t Au, and 17.12 g/t Ag (6.15 % ZnEq) at the 100% owned Point Leamington Massive Sulphide Deposit, Newfoundland

Calibre's High Grade Trench Results Expand New Gold Discovery at 100% Owned Montes de Oro, Project, Nicaragua; 17.0 m Grading 17.95 g/t Gold, 20.5 g/t Silver, 0.12 % Copper and 2.75% Zinc

Step-Out Trenching at Calibre's 100% Owned Riscos de Oro Deposit returns 13.50 m Grading 3.26 g/t Gold and 14.7 g/t Silver Eastern Epithermal District, Borosi Concessions, Nicaragua

Calibre Engages Roman Friedrich & Company as Financial Advisors

B2Gold to Spend $6.0 Million to Earn an Additional 19% Interest in Calibre's Primavera Gold - Copper Project and Surrounding Borosi Concessions in the Mining Triangle, Nicaragua

Calibre Adopts Advance Notice Policy

Calibre Discovers New Porphyry and Skarn-Style Mineralization at La Virgen and Montes de Oro Targets, Borosi Concessions, Nicaragua with Trenches Assaying 9.0 m Grading 10.76 g/t Au and 0.12% Cu along with 45.0 m grading 0.40 g/t Au and 0.19% Cu

Calibre Announces Initial Metallurgical Testing of Primavera Mineralization Shows Excellent Recoveries for Gold and Copper

B2Gold Completes Earn Into 51% and Approves Initial $2.0 Million Phase I Exploration Program at Primavera for 2013

Primavera DH Collars

Calibre Completes Concession Exchange to Expand Land Holdings in the Eastern Epithermal Gold-Silver District, Borosi Concessions, Nicaragua

Calibre Continues to Advance Exploration Targets on 100% Owned Projects within the Borosi Concessions, Nicaragua