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Advanced Gold, Copper and Silver Exploration
 	   Mining Triangle, Nicaragua
 	   TSX.V: CXB
 	   September 2012
FORWARD LOOKING STATEMENT
Certain statements in this document constitute “forward looking
statements” which may not be based on historical fact. Such forward looking
statements involve known and unknown risk, uncertainties and other
factors which may cause the actual results, performance or achievements of
the Company, or industry results to be materially different from any future
results, performance, or achievements expressed or implied by such forward
looking statements. Such factors include, among others, the following: actual
results of exploration and development activities; the costs and timing of
the development of new deposits; future prices of precious and base metals;
accidents; risks inherent in mineral exploration; risks associated with
development, construction and mining operations; restrictions on foreign
ownership; the Company’s history of operating losses and uncertainty
of future profitability; uncertainty of access to additional capital; and
environmental liability claims and insurance. This presentation is not an
offer to purchase securities and does not constitute an offering document
under Securities legislation.
4   CALIBRE INVESTMENT HIGHLIGHTS                                                                                                                 CALIBREMINING.COM   5



    Calibre’s Borosi Gold-Copper-Silver Project
    Mining Triangle of Northeast Nicaragua, Central America

    InvestMENT Highlights
                                                                                  New Discovery: PRIMAVERA GOLD-COPPER PROJECT

    Stable Environment: PROLIFIC MINING DISTRICT                                  »  rimavera porphyry gold/copper discovery
                                                                                    P

    » Stable government, with a political environment favorable
                                                                                 »  irteen drill holes completed totaling 3,938m
                                                                                    Th
      to mining                                                                   »  iscovery drill hole (Jan. 2012): 261.7m grading 0.78 g/t Au, 0.30% Cu
                                                                                    D
    » Prolific “Mining Triangle” has produced over 7.9M oz’s of gold              »  oint Venture with B2Gold. B2Gold(Nicaragua’s largest gold producer)
                                                                                    J
    » Calibre and its partners control over 860 km of underexplored project
                                                  2                                can earn a 51% interest in 322km2 of concessions including Primavera
      area in the region                                                          » Extensive exploration and 10,000 metre phase II drilling program underway 	
                                                                                    (2 rigs total)
    Team AND PARTNERS: Experienced, Successful                                    » $4.0M program planned by B2Gold for 2012
    » Calibre Mining Proven management with decades of mining and public         » 25km2 porphyry gold/copper target area at Primavera
      company experience
    »  eatherstone Capital Strong history of success. Have created billions of
      F                                                                           Established ProjectS: Proven PARTNERS
      dollars in Shareholder Value
                                                                                  »  alibre 100%-owned NI 43-101 Compliant Inferred Resource totaling
                                                                                    C
    » B2Gold Nicaragua’s largest gold producer with two mines and a strong         1,057,750 ozs Gold and 8,430,070 ozs Silver in three Gold-Silver Deposits
      portfolio of development assets
                                                                                  » Calibre/Alder NI 43-101 Compliant Inferred Resource totaling 118,000ozs 	
    » Alder Resources Experienced management with focus on exploration in
                                                                                   Gold, 2.35 million ozs Silver, 108 million lbs Copper
      the Americas
                                                                                  »  alibre/B2Gold new discovery of the primavera gold/copper porphyry with
                                                                                    C
                                                                                    multi-rig drill program underway
6   CALIBRE TEAM                                                                                                                                      CALIBREMINING.COM   7




    EXPERIENCED Team                                                                     PARTNERS
    Calibre Mining Corp
                                                                                         B2Gold
    Greg Smith, P.Geo President  CEO, Director
                                                                                         Vancouver based gold producer led by Clive Johnson and Tom Garagan,
    	    » 
           25+ years exploration experience with both junior  senior operations;
                                                                                         with two gold mines in Nicaragua and a strong portfolio of development and
    	    »  nvolved in successfully outlining 10+ million ounces of gold discoveries.
           I                                                                             exploration assets in Nicaragua, Colombia, Uruguay and Namibia B2Gold was
    Paulo Santos, CA Chief Financial Officer                                             founded in 2007 by the former executive and management team of Bema
    	    » 10+ years experience with public accounting, auditing, and regulatory
                                                                                        Gold Corporation.
           compliance
    Edward Farrauto, CGA Director                                                        Alder Resources
    	    » 20+ years experience as CFO and director of public companies;
                                                                                       Toronto-based junior exploration company with a focus on exploration for
    	    » Founder and director of several public companies;
                                                                                        base and precious metals in the Americas.
    George Salamis Director
    	    » 20+ years exploration, development and operations experience;
           
    	    »  resident  CEO of Edgewater Exploration Ltd.
           P
                                                                                         SHARE STRUCTURE
    Hon. John Reynolds, P.C. Director
                                                                                         Issued  Outstanding	                          187,910,918
    	    » 
           35+ years experience in politics, former Member of Parliament, and a
           member of the Queen’s Privy Council for Canada;                               Options	15,605,000
                                                                                         Yamana Warrants	                               10,000,000
    	    » Strategic Senior Advisor at McMillan LLP.
           
                                                                                         B2Gold Warrants	                               10,000,000
                                                                                         Fully Diluted	                                 223,515,918
    Featherstone Capital
                                                                                         Fully Diluted Cash Position	                   $22,417,250
    Douglas B. Forster, M.Sc., P.Geo Executive Chairman of the Calibre Board             Working Capital	                               ~$5,000,000
    	    » President  CEO of Featherstone Capital Inc.
           
    	    »  0+ years of resource project development, MA, equity finance and
           3                                                                             SIGNIFICANT SHAREHOLDERS
           public company management;
                                                                                         B2Gold Corp.	                                  10.6%
    	    » Founder and director of numerous public companies;
           
                                                                                         Management	10.0%
    Blayne Johnson Lead Director of Calibre Board
    	    » 25 years of capital markets experience;
           
    	    » Former VP of First Marathon Securities
           
    	    »  hairman of Featherstone Capital Inc.
           C
8   WORKING IN NICARAGUA                                                                                                                                        CALIBREMINING.COM   9




                                                                                        BOROSI CONCESSION AREA




                                                                                                                                            Borosi           Puerto Cabezas
                                                                                                                   HONDURAS               Concessions           (Airport)

    Nicaragua: Stable, Under Explored                                                                                                Bonanza
                                                                                                                                     (Gold Mine)
                                                                                                                                                            Riscos de Oro

    Mining Environment         EL SALVADOR                                                                                            Siuna             Rosita and
                                                                                                                                                        Primavera

    » Democratic Republic with President Ortega elected to a new 5 year term
      
      in Nov. 2011
    » Gold is Nicaragua’s No. 3 export
                                                                                                                                     NICARAGUA
    » Gold has helped Nicaragua’s economy grow by 4% annually in the past year,
                                                                                                             El Limon (Gold Mine)
      the highest rate in Central America                                                                     B2GOLD CORP.


    » Annual gold production has more than doubled in the past 3 years
                                                                                                                                        La Libertad (Gold Mine)
                                                                                       Pacific Ocean     Managua                         B2GOLD CORP.
    » Supportive mining laws, including favourable tax regime
      
                                                                                                                                                                      Caribbean
    » 25 year exploration and 50 year exploitation permits
                                                                                                                                                                     Sea

    » Economist Intelligence Unit ranks Nicaragua as one of the safest countries
                                                                                                                                  Lake
      in Central America                                                                                                         Nicaragua




                                                                                                                                     COSTA RICA




                                                                                   0    20   40   80   120   160km
10    BOROSI CONCESSIONS AREA                                                                                                                                                                    CALIBREMINING.COM 11




      BOROSI GOLD, SILVER AND COPPER
      CONCESSIONS – “Mining triangle”
                                                                                                                                                                               CALIBRE/B2Gold
                                                                                                                                                                               1	PRIMAVERA
                              Borosi Concessions                                                                                                                               	 Gold-Copper

                                                                                                                                                                               2	Minnesota
                                      Borosi Concessions
                                                                                                                                                                               	 Gold-Copper
                         m
                         5k
                    27




                              NICARAGUA                                                  Cerro Cola Blanca
                                                                                          Forest Reserve                                                                       100% CALIBRE
                                  m
                                 5k
                               27




     Managua                           NICARAGUA                                          Cerro Cola Blanca
                                                                                           Forest Reserve
               Managua
                                                                                                                                                                               3	 CERRO AEROPUERTO
                                                                                                                                                                               	 Gold-Silver
                                                                                                                         Riscos de Oro                                         	 NI43-101 Inferred Resource
                                                           Bonanza
                                                                                                                               Riscos de Oro                                   	 707,750 oz Au
                                                             Bonanza                                                                                          Blag
                                                                  Bonanza (Gold Mine)                                                                                          	 3.14M oz Ag
                                                                   2.8M OZS PAST PRODUCTION
                                                                     Bonanza (Gold Mine)
                                                                     2.8M OZS PAST PRODUCTION
                                                                                                                                               5
                                                                                                                                                                               4	LA LUNA

                                                                                                              2          Minnesota
                                                                                                                     Minnesota                                  4              	 Gold-Silver
                                                                                                                                                                               	 NI43-101 Inferred Resource
                                                                                                                                                              La Luna          	 127,700 oz Au
                                                                                                                                                        La Luna
                                                                                                                               Rosita                                          	 1.74M oz Ag
                                                                                                                         Rosita
                                                                                                                     6                                                         5	RISCOS DE ORO
                                                                                                                                                                               	 Gold-Silver
                                                                                                              Santa RitaRita
                                                                                                                Santa                                                          	 NI43-101 Inferred Resource	
                                                                                                                                                                               	 222,300 oz Au	
                                                                           Cerro Banacruz
                                                                          Cerro Banacruz                                                                                       	 4.14M oz Ag
                                                                                                                     1
                                                                            Forest Reserve
                                                                          Forest Reserve
                                                                                                                             Primavera
                                                                                                                                    Primavera                                  CALIBRE/ALDER
                                                                                                                                                                               RESOURCES
                                                                                                                                          Prospects
                                                                                                                                                 Prospects
                                                                                                                                          100% Calibre
                                                                                                                                                                               6	ROSITA
                                                                                                                                                 100% Calibre                  	   Copper-Gold-Silver	
                                                                                                                                          Calibre-Alder Option Area
                                                                                                                                                                               	   NI 43-101 Inferred Resource	
                                                                                                                                                 Calibre-Alder Option Area
                    Cerro                  Siuna                                                                                          Calibre-B2Gold Option Area           	   108M lbs Cu
               Aeropuerto
          Cerro           3  Siuna
     AeropuertoLA LUZ (Gold Mine)
                                                                                                                     0          5         10     Calibre-B2Gold Option Area
                                                                                                                                                      15      20km             	
                                                                                                                                                                               	
                                                                                                                                                                                   118,000 oz Au	
                                                                                                                                                                                   2.35M oz Ag	
               2.7M OZS PAST PRODUCTION                                                                                  0            5            10          15       20km
           LA LUZ (Gold Mine)
           2.7M OZS PAST PRODUCTION
12   PRIMAVERA PROJECT                                                                                                                     CALIBREMINING.COM 13

                                                                                                                                  Borosi Concessions


     PRIMAVERA GOLD/COPPER PROJECT

     PROJECT HIGHLIGHTS
                                                                                                                                               0km     20   40

     » Road accessible with national power grid located 1.2 km from the project, 8km
       
       from town of Rosita
     » Subdued topography with main land use being subsistence farming and
       
                                                                                       AIRBORNE RADIOMETRIC SURVEY
       ranching
     » Joint Venture with B2Gold: B2Gold can earn a 51% interest in Primavera, as
       
       well as 322 sq km of surrounding concessions, by spending $8M by June, 2014
       (~$6.0 spent to June 2012). B2Gold may elect, once earn-in is complete, to
       carry an individual prospect within the concession area through a Preliminary
       Feasibility Study for an additional 14% interest in the project
     » Updated Airborne geophysical survey completed over a large 5km by 5km
       
       interpreted intrusive/volcanic complex. Additional ground surveys underway
     » 13 drill holes completed totaling 3,938m
       
     » Extensive exploration and 10,000 metre phase II drilling program underway                                 Intrusive/Volcanic
     (2 rigs total)
                                                                                                                 Complex
     » Primavera is geologically similar to Newcrest Mining Limited’s Cadia-
       
       Ridgeway porphyry gold/copper mine in NSW, Australia where underground
       and open pit reserves contain 23.6M oz Au and 8.3B lbs Cu*




                                                                                         PRIMAVERA GOLD-COPPER DISCOVERY




*Newcrest Mining Limited website
14   PRIMAVERA PROJECT                                                                                                         CALIBREMINING.COM 15

                                                                                                                      Borosi Concessions


     PRIMAVERA GOLD/COPPER PROJECT
     SOIL GEOCHEMISTRY
                                                                                                                                   0km     20   40



     GOLD IN SOIL GEOCHEMISTRY                                COPPER IN SOIL GEOCHEMISTRY




     TRENCH RESULTS                                           HIGHLIGHTS
     Trench ID	Interval (m)	     Gold (g/t)	   Copper (ppm)   »  ver 800 m by 300 m gold/copper soil geochemistry anomaly (open)
                                                                O
     PRTR11-005	 51.25	1.53	                       680        »  dditional gold/copper soil geochem anomalies have been outlined in the
                                                                A
     PRTR11-010	 107.00	0.78	                      980          25km2 Primavera porphyry target area
     PRTR11-011	 179.40	0.63	                      997
                                                              »  renches returned long intervals of continuous gold/copper mineralization
                                                                T
     PRTR11-012	 58.00	0.70	 1313                               including 179.4m grading 0.63g/t Au and 997 ppm Cu
     PRTR11-013	 49.50	0.25	 1100
                                                              »  ery sparse rock outcrop in region with up to 10m of overburden
                                                                V
     PRTR11-014	 51.70	0.42	 1286
                                                                and saprolite
16    PRIMAVERA PROJECT                                                                                                                          CALIBREMINING.COM 17



PRIMAVERA GOLD/COPPER PROJECT RESULTS                                                                                                      Borosi Concessions


                                                                                                                    PRIMAVERA DRILL PLAN
»  old/copper mineralization has been intersected in drill holes over a 300m by 300m
  G
  area and to a depth of 300m with mineralization comprised of quartz-magnetite-
  chalcopyrite-bornite veins and vein stockwork within broad zones of potassically and
                                                                                                                                                        0km     20   40
  propylitically-altered intermediate volcanic and intrusive rocks
»  4.0M program planned by B2Gold for 2012
  $
»  rimavera is geologically similar to Newcrest Mining Limited’s Cadia-Ridgeway gold/
  P
  copper mine (23.6M oz Au and 8.3B lbs Cu)
                      PRIMAVERA SELECT DRILL RESULT HIGHLIGHTS*
      Drill Hole	          From	            To		Length	               Gold	  Copper	 AuEq**
      		                    (m)	           (m)	   (m)	                (g/t)	 (ppm)	 (g/t)

      PR-11-001	            0.00	 276.80	276.80	 0.50	 2,146	 0.84
      	includes	 0.00	                   103.00	 103.00	               0.85	        3,240	         1.36
      PR-11-002	            1.5	         263.20	261.70	 0.78	 2,966	 1.25
      	includes	            1.5	         209.00	 207.50	               0.89	        3,378	         1.42
      	includes	 74.50	                   209.00	 134.50	              1.01	        3,561	         1.57
      PR -11-003	           4.00	         327.20	       323.20	        0.41	        1,843	         0.70
      	includes	 4.00	                    150.50	 146.50	              0.65	        2,742	         1.08
      PR-12-005	 207.50	 372.50	165.00	 0.31	 1,713	 0.58
      PR-12-006	 12.00	102.00	90.00	0.21	1,315	 0.42
      PR-12-007	            7.70	 255.00	247.30	 0.22	 1,097	 0.39
      	includes	156.00	197.00	41.00	0.34	1,760	 0.62
      PR-12-008	 107.65	 280.00	172.35	 0.48	 2,401	 0.86
      	includes	131.50	187.00	55.50	0.67	3,507	 1.22
      	includes	187.00	280.00	93.00	0.41	1,978 	0.72
      	includes	 280.00	                 382.50	 102.50	               0.23	        1,139	         0.41
      PR-12-10	            79.00	 94.40	15.40	0.59	4,325	 1.27
      PR-12-11	             6.95	 166.48	159.53	 0.46	 2,008	 0.78
      	I
       ncludes	6.95	 95.65	88.70	0.53	2,225	 0.88
      PR-12-013	             24	           46.5	 22.5	 0.44	2,090	 0.77

*Complete drill results available on Calibre Mining’s website
**AuEq (g/t) Gold Equivalent calculated using 1,300/oz gold and $3.00/lb copper and metallurgical
 recoveries and net smelter returns are assumed to be 100%
Note: Holes 1-3 released Jan. 20, 2012, Holes 4-10 released April 16, 2012 and holes 11-13 released June 28, 2012
18   PRIMAVERA PROJECT                                                                                                                            CALIBREMINING.COM 19

                                                                                                                                         Borosi Concessions


     PRIMAVERA GOLD/COPPER PROJECT DRILL HOLES
     PR11-002, PR12-008, PR12-011
                                                                                         DRILL HOLE PR12-008
                                                                                                                                                      0km     20   40




                                                                PR-12-011
                                     PR-11-002                    159.53m grading 0.46
                                     261.70m grading 0.78         g/t Au, 0.20% Cu
                                     g/t Au, 0.30% Cu




                    PR-12-008
                247.35m grading 0.43 g/t
                Au, 0.21% Cu




               Au (g/t)


               Cu (%)




      PR11-002 INTERCEPTED:
      » 261.70m grading 0.78 g/t Au, 0.30% Cu
      » Continuos Gold-Copper Mineralization

      PR12-008 INTERCEPTED:
      » 247.35m grading 0.43 g/t Au, 0.21% Cu                                            PR12-008 INTERCEPTED:
        including 172.35m grading 0.48 g/t Au, 0.24% Cu                                  » 172.35m grading 0.48 g/t Au, 0.24% Cu
      PR12-011
                                                                                         PICTURED DRILL INTERCEPT ASSAYED
      » 159.53m grading 0.46 g/t Au, 0.20% Cu
                                                                                         »  .52m @ 0.59g/t Au and 0.29% Cu
                                                                                           5
        including 88.7m grading 0.53 g/t Au, 0.22% Cu
                                                                                            (Section 196.93m-202.45m of Hole PR12-008)
*PR12-008/011 were analyzed at Inspectorate Labs in Vancouver
20   PRIMAVERA PROJECT                                                                                      CALIBREMINING.COM 21




                         PRIMAVERA PORPHYRY Gold/copper mineralization - DISTRICT POTENTIAL




                                                                            25 Km 2 Porphyry Gold/Copper
                                                                            Target Area
                                                Primavera
                                                                            Porphyry SYSTEMS ARE KNOWN TO
                                      Copper Hill
                                                                            OCCUR IN CLUSTERS

                                                          Santa Juana



                                                            San Francisco

                               District Exploration Potential
                               » Lidar Survey Completed
                               » Airborne geophysical survey underway
                               » Soil geochem grids expanded
                               » IP survey planned
MINNESOTA PROJECT                           CALIBREMINING.COM 22                                                                      CALIBREMINING.COM 23


                                                                                                                            Borosi Concessions




                                     MINNESOTA PORPHYRY Gold/copper PROJECT
                                                                                                                                         0km     20   40



        GOLD IN SOIL GEOCHEMISTRY                                     COPPER IN SOIL GEOCHEMISTRY

                                                                                  INtrusive Rock
                    INtrusive Rock
                                                                                  Boundary
                    Boundary




      TRENCH RESULTS                                               HIGHLIGHTS
                                                                   » located 20 kilometres northwest of the Primavera gold-copper project
            Trench ID		Interval (m)	         Gold (g/t)
                                                                   » successfully outlined porphyry-style mineralization delineated over 1.75km
            BRTR11-044		 6.40	                  5.56               by 1.25km
            BRTR11-047		 8.00	                  6.35               »5
                                                                     00m by 250m gold and copper soil anomaly
            BRTR11-053		 4.65	                  1.51
                                                                   »  39.5 metres of face sampling of artisanal workings
                                                                     3
            BRTR11-054		 6.00	                  2.12
            BRTR11-057		 12.80	                 1.27               »  etailed geological mapping over 15 square kilometres and reconnaissance
                                                                     d
                                                                     geologic mapping over 52 square kilometres
24   SELECTED PORPHYRY GOLD/COPPER DEPOSITS/MINES                                                                                                              CALIBREMINING.COM 25




                                                                                         SELECTED PORPHYRY GOLD/COPPER
                                                                                         DEPOSITS/MINES
                      HONDURAS                                                           Deposit	     Tonnes	    Au	     Cu	    Au Eq.	      Contained Au	       Contained Cu
                                                                                         	             (Mt)	    (g/t)	   (%)	   (g/t)*	       (Million ozs)	      (Billion lbs)

                                                                                         Cerro Casale	1,200	0.59	0.22	0.94	                       23.1	                5.78
                                                                                         Chapada	      429	0.24	0.26	0.65	                         3.1	                2.15
                                                                                         El Morro	     537	0.49	0.52	1.31	                         8.2	                6.08
                                                               PRIMAVERA                 Agua Rica	    908	0.22	0.49	1.00	                        22.1	                9.78
                                                        Porphyry Gold-Copper Project
                                                                                         Maricung	     269	0.70	0.00	0.70	                         6.0	                0.00
                                                                                         Alumbrera	    390	0.51	0.47	1.25	                         6.4	                4.03
                           NICARAGUA
                                                                                         Kemess South	109	0.71	0.23	1.07	                          2.5	                0.56
                                                                                         Mt. Milligan	 531	0.34	0.20	0.66	                         6.0	                2.12
                                                                                         Cobra Panama	2,143	0.07	0.41	0.72	                        4.9	               19.59
                                                          Caribbean Sea
                                                                                         Cerro Colorado	1,400	0.08	0.78	1.31	                      3.5	               24.00
                                                                                         Cadia-Ridgeway	
                                                                                                       1,290	0.58	0.30	1.06	                      23.6	                8.30
                                                                                         Primavera**	-	0.61	0.25	1.01	                              -	                   -

                                                                                                                                 * Au Eq. (g/t): Gold Equivalent calculated using
                                                                                                                                  $1,300/oz gold and $3.00/lb copper and
                                                                                                                                  metallurgical recoveries and net smelter returns
                                                         COBRA PANAMA                                                             are assumed to be 100%.
                                                      19.6 B lbs Copper, 4.9M ozs Gold                                           ** Weighted average grade of PR-11-001, PR-11-
                                        COSTA RICA                                                                                002, PR-11-003 and PR-12-008
                                                                                                                                 Resource Information derived from Website
                                                                                                                                 Sources.



                        Pacific Ocean


                                                                          PANAMA



                             CERRO COLORADO
                            24.8 B lbs Copper, 3.5M ozs Gold
26          RISCOS DE ORO PROJECT                                                                                                                                                           CALIBREMINING.COM 27

                                                                                                                                  Borosi Concessions



            RISCOS DE ORO PROJECT
            DISTRICT POTENTIAL
                                                                                                                                                      0km           20            40

            100% CALIBRE OWNED
     »  ow Sulfidation Epithermal Gold-Silver Vein District
       L
     »  omparable to nearby Bonanza Camp in geology, mineralization, and
       C
       structure (past production of +2.8 million ozs Au)
     »  old – Silver System extends over 7 km from the El Paraiso and Murcielago
       G
       targets Northeast towards Riscos de Oro
     »  ompleted 9,427m of resource delineation drilling at Riscos in 37 holes
       C
       with epithermal gold-silver intercepts including 7.69 g/t Au,
       211.80 g/t Ag over 10.6m
     »  istoric trenching at Murcielago adit 7.0 Km SW of Riscos returned
       H
       12.4 g/t Au over 3.0 metres

     NI 43-101 GOLD/SILVER RESOURCE AT RISCOS
     DE ORO
     100% CALIBRE OWNED
        Calibre Mining Corp. Inferred Resource (using a 0.6 g/t AuEq cutoff grade)

        	                                            Tonnes and Grade	                                                        Total Ounces

        Zone		                            Tonnes	          Grade	 Grade	        Grade 	 Contained Au	 Contained Ag	 Contained	
        		                                 (g/t)	         (Au g/t)	 (Aq g/t)	 (AuEq g/t)	 (ounces)	     (ounces)	 (ounces AuEq)

        Upper	                         1,539,000	2.45	 64.42	 3.46	                                         121,200	 3,188,000	

        Lower	                            620,000	5.07	47.87	 5.82	 101,000	 954,000	

        Total		                        2,159,000	            3.20	         59.67	          4.14	            222,300	             4,142,000	              287,100	

1. CIM definition standards were followed for the resource estimate.
2. The 2012 resource models used Inverse Distance grade estimation within a three-dimensional block model with mineralized zones defined by wireframed solids.
3. A base cutoff grade of 0.6 g/t AuEq was used for reporting resources with capping of silver grades at 591 g/t.
4. A density of 2.65 g/cm3 was applied.
5. Numbers may not add exactly due to rounding.
6. Gold Equivalent (AuEq) calculated using $1264 /oz Au for gold and $19.78/oz Ag for silver and metallurgical recoveries and net smelter returns are assumed to be 100%.
7. Mineral Resources that are not mineral reserves do not have economic viability

8. The quantity and grade of reported inferred resources in this estimation are uncertain in nature and there has been insufficient exploration to define these inferred resources as an	
   indicated or measured mineral resource and it is uncertain if further exploration will result in upgrading them to an indicated or measured mineral resource category.
28       CERRO AEROPUERTO AND LA LUNA PROJECTS                                                                                                                                       CALIBREMINING.COM 29



     NI 43-101 GOLD/SILVER RESOURCES
     CERRO AEROPUERTO, LA LUNA  Riscos
                                                                                                                                        Borosi Concessions




     100% CALIBRE OWNED
     Calibre Mining Corp. Inferred Resource (using a 0.6 g/t AuEq cutoff grade)
                                                                                                                                                     0km     20   40

     	                               Tonnes and Grade	                                   Total Ounces                                                                  La Luz Mine


     Deposit	 Tonnes	                     Gold	 Silver	 Au Eq1	               Gold	           Silver	          Au Eq1
     			                                  (g/t)	(g/t)	 (g/t)	                 (oz)	            (oz)	            (oz)

     Cerro Aeropuerto	     6,052,000	      3.64	     16.16	      3.89	       707,750	       3,144,500	         757,000

     La Luna	              2,539,000	      1.56	     14.01	      1.78	       127,700	       1,143,570	         146,000

     Risco		               2,159,000	      3.20	     59.67	      4.14	       222,300	       4,142,000	         287,000

     						 1,057,750	8,430,070	 1,190,000

1. * or Cerro Aeropuerto  La Luna Gold Equivalent (Au Eq) calculated using gold price of US$1,058/oz and silver price
    F
    of US$16.57 /oz and for Riscos a gold price of US$1264/oz and silver price of US$19.78/oz. Assumes metallurgical
    recoveries and net smelter returns are to be 100%
2. Mineral resources that are not mineral reserves do not have economic viability.
3. A base cutoff grade of 0.6 g/t AuEq was used. Riscos estimate used a capping of silver grades at 591 g/t.
   a density of 2.65 g/cm3 was applied. Numbers may not add exactly due to rounding.
                                                                                                                                                    CERRO AEROPUERTO DRILL HOLES
     NI 43-101 COPPER/GOLD/SILVER RESOURCES AT
     ROSITA                                                                                                                             Borosi Concessions



     Joint Venture with AlDer Resources
     Calibre Mining Corp. and Alder Resources Inferred Resource (using a 0.15% Copper cutoff grade)
                                                                                                                                                     0km     20   40
     	                               Tonnes and Grade	                                  Total Resources

     Deposit	 Tonnes	 Gold	Silver	 Cu	                                         Gold	          Silver	            Cu
     			              (g/t)	(g/t)	 (%)	                                        (oz)	           (oz)	            (lbs)

     Rosita Stock Piles	   7,950,000	      0.46	     9.20	       0.62	       118,000	         2.35M	            108M

1. Base case is reported at a 0.15% copper equivalent cut-off grade which incorporates consideration of mining and processing
cost, recoveries, commodity prices and selling cost.
2. Estimate assumes a long term copper price of US$2.90/lb, a gold price of US$1,200/oz and a silver price of US$24/oz.
3. Rounding as required by NI 43-101 reporting guidelines may result in apparent summation differences.
4. Tonnage and grade measurements are in metric units. Contained gold and silver ounces are reported as troy ounces, contained
copper pounds as imperial pounds.
5. Mineral resources that are not mineral reserves do not have demonstrated economic viability. The estimate of mineral resources
may be materially affected by environmental, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.
6. The quantity and grade of reported inferred mineral resources in this estimation are uncertain in nature and there has been                     LA LUNA DRILL HOLES
insufficient exploration to define these inferred mineral resources as indicated or measured mineral resources and it is uncertain if
further exploration will result in upgrading them to indicated or measured mineral resources.
30   CALIBRE/ALDER OPTION                                                                     CALIBREMINING.COM 31



                                                               Borosi Concessions


      FORMER SANTA RITA
      COPPER-GOLD MINE
      CALIBRE/ALDER OPTION
                                                                            0km     20   40




      »  ptioned to Alder Resources; Alder to spend C$4.0 million over the
        O
        next four years to earn a 65% stake in Calibre’s Rosita D Concession
      »  osita D concession: 3,356 hectares - only 5% of Calibre’s concessions
        R
        in the Mining Triangle
      »  istoric open pit Santa Rita copper-gold mine: total historic
        H
        production from skarn mineralization estimated at 305 M lbs of Cu,
        177,737 ozs of Au, and 2,629,720 ozs of Ag from 5,924,572 tons of ore
        (Arengi, 2002)
      »  n May 9, 2012 Alder Resources Announced a NI 43-101 Inferred
        O
        Resource estimate of 7.95 Mt averaging 0.62% Cu, 0.46 g/t Au, and
        9.2g/t Ag. Containing 108 M lbs copper, 118,500 oz gold and 2.35 M
        oz of silver
      »  hase One exploration commenced, including 8,000 metres of
        P
        diamond drilling. Results to date include: 8.0m grading 29.54 g/t Au
        and 8.0m grading 6.9 g/t Au (Alder news Release Sept 5, 2012)
32                                                                                                                                                               33




                         Summary                                    EXPLORATION TIME LINE  NEWS Flow

     »  icaragua provides a favorable, stable, environment
       N
       for mining.                                                      2012                   Q1                  Q2                 Q3                  Q4

                                                              Exploration for Porphyry   Calibre/B2Gold Option
     »  alibre’s 100% owned gold-silver deposits host
       C                                                      Gold/Copper Systems        100% Calibre owned concessions
       inferred resources of 1,057,750 oz Au and 8,430,070
       oz Ag (1,190,000 oz AuEq)                              Target Delineation
                                                              Drilling
                                                                                         Primavera / Calibre/B2Gold
                                                                                         Rosita Copper Project / Calibre/Alder Resources Option


     »C
       alibre Mining, Featherstone Capital, B2Gold, and     Data Review
                                                                                         Riscos de Oro / Cerro Aeropuerto / La Luna / 100%

       Alder Resources are an established, experienced team                              Calibre

       who control over 860 km2 of underexplored territory                               Drill results from Santa Rita and Primavera + regional porphyry gold/
                                                              RESULTS
       in an area that has already produced more than 7.9M                               copper exploration and drill programs

       oz’s of gold.

     »  ew porphyry gold-copper discovery at Primavera
       N
       with district potential.                                     INFORMATION
                                                                    Mark Carruthers
     »W
       ith up to $7 million in exploration carried by             Manager, Investor Relations
                                                                    calibre@calibremining.com
       partners, Calibre is able to rapidly advance its             (604) 681.9944
       opportunities in the Mining Triangle.                        Calibre Mining Corp.
                                                                    1620 – 1066 West Hastings St.
                                                                    Vancouver, BC V6E 3X1

                                                                    TSX.V: CXB

                                                                    calibremining.com
Calibre Mining Corp.
1620 – 1066 West Hastings St.
Vancouver, BC V6E 3X1

TSX.V: CXB

calibremining.com

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Corporatepresentation

  • 1. Advanced Gold, Copper and Silver Exploration Mining Triangle, Nicaragua TSX.V: CXB September 2012
  • 2. FORWARD LOOKING STATEMENT Certain statements in this document constitute “forward looking statements” which may not be based on historical fact. Such forward looking statements involve known and unknown risk, uncertainties and other factors which may cause the actual results, performance or achievements of the Company, or industry results to be materially different from any future results, performance, or achievements expressed or implied by such forward looking statements. Such factors include, among others, the following: actual results of exploration and development activities; the costs and timing of the development of new deposits; future prices of precious and base metals; accidents; risks inherent in mineral exploration; risks associated with development, construction and mining operations; restrictions on foreign ownership; the Company’s history of operating losses and uncertainty of future profitability; uncertainty of access to additional capital; and environmental liability claims and insurance. This presentation is not an offer to purchase securities and does not constitute an offering document under Securities legislation.
  • 3. 4 CALIBRE INVESTMENT HIGHLIGHTS CALIBREMINING.COM 5 Calibre’s Borosi Gold-Copper-Silver Project Mining Triangle of Northeast Nicaragua, Central America InvestMENT Highlights New Discovery: PRIMAVERA GOLD-COPPER PROJECT Stable Environment: PROLIFIC MINING DISTRICT » rimavera porphyry gold/copper discovery P » Stable government, with a political environment favorable » irteen drill holes completed totaling 3,938m Th to mining » iscovery drill hole (Jan. 2012): 261.7m grading 0.78 g/t Au, 0.30% Cu D » Prolific “Mining Triangle” has produced over 7.9M oz’s of gold » oint Venture with B2Gold. B2Gold(Nicaragua’s largest gold producer) J » Calibre and its partners control over 860 km of underexplored project 2 can earn a 51% interest in 322km2 of concessions including Primavera area in the region » Extensive exploration and 10,000 metre phase II drilling program underway (2 rigs total) Team AND PARTNERS: Experienced, Successful » $4.0M program planned by B2Gold for 2012 » Calibre Mining Proven management with decades of mining and public » 25km2 porphyry gold/copper target area at Primavera company experience » eatherstone Capital Strong history of success. Have created billions of F Established ProjectS: Proven PARTNERS dollars in Shareholder Value » alibre 100%-owned NI 43-101 Compliant Inferred Resource totaling C » B2Gold Nicaragua’s largest gold producer with two mines and a strong 1,057,750 ozs Gold and 8,430,070 ozs Silver in three Gold-Silver Deposits portfolio of development assets » Calibre/Alder NI 43-101 Compliant Inferred Resource totaling 118,000ozs » Alder Resources Experienced management with focus on exploration in Gold, 2.35 million ozs Silver, 108 million lbs Copper the Americas » alibre/B2Gold new discovery of the primavera gold/copper porphyry with C multi-rig drill program underway
  • 4. 6 CALIBRE TEAM CALIBREMINING.COM 7 EXPERIENCED Team PARTNERS Calibre Mining Corp B2Gold Greg Smith, P.Geo President CEO, Director Vancouver based gold producer led by Clive Johnson and Tom Garagan, » 25+ years exploration experience with both junior senior operations; with two gold mines in Nicaragua and a strong portfolio of development and » nvolved in successfully outlining 10+ million ounces of gold discoveries. I exploration assets in Nicaragua, Colombia, Uruguay and Namibia B2Gold was Paulo Santos, CA Chief Financial Officer founded in 2007 by the former executive and management team of Bema » 10+ years experience with public accounting, auditing, and regulatory Gold Corporation. compliance Edward Farrauto, CGA Director Alder Resources » 20+ years experience as CFO and director of public companies; Toronto-based junior exploration company with a focus on exploration for » Founder and director of several public companies; base and precious metals in the Americas. George Salamis Director » 20+ years exploration, development and operations experience; » resident CEO of Edgewater Exploration Ltd. P SHARE STRUCTURE Hon. John Reynolds, P.C. Director Issued Outstanding 187,910,918 » 35+ years experience in politics, former Member of Parliament, and a member of the Queen’s Privy Council for Canada; Options 15,605,000 Yamana Warrants 10,000,000 » Strategic Senior Advisor at McMillan LLP. B2Gold Warrants 10,000,000 Fully Diluted 223,515,918 Featherstone Capital Fully Diluted Cash Position $22,417,250 Douglas B. Forster, M.Sc., P.Geo Executive Chairman of the Calibre Board Working Capital ~$5,000,000 » President CEO of Featherstone Capital Inc. » 0+ years of resource project development, MA, equity finance and 3 SIGNIFICANT SHAREHOLDERS public company management; B2Gold Corp. 10.6% » Founder and director of numerous public companies; Management 10.0% Blayne Johnson Lead Director of Calibre Board » 25 years of capital markets experience; » Former VP of First Marathon Securities » hairman of Featherstone Capital Inc. C
  • 5. 8 WORKING IN NICARAGUA CALIBREMINING.COM 9 BOROSI CONCESSION AREA Borosi Puerto Cabezas HONDURAS Concessions (Airport) Nicaragua: Stable, Under Explored Bonanza (Gold Mine) Riscos de Oro Mining Environment EL SALVADOR Siuna Rosita and Primavera » Democratic Republic with President Ortega elected to a new 5 year term in Nov. 2011 » Gold is Nicaragua’s No. 3 export NICARAGUA » Gold has helped Nicaragua’s economy grow by 4% annually in the past year, El Limon (Gold Mine) the highest rate in Central America B2GOLD CORP. » Annual gold production has more than doubled in the past 3 years La Libertad (Gold Mine) Pacific Ocean Managua B2GOLD CORP. » Supportive mining laws, including favourable tax regime Caribbean » 25 year exploration and 50 year exploitation permits Sea » Economist Intelligence Unit ranks Nicaragua as one of the safest countries Lake in Central America Nicaragua COSTA RICA 0 20 40 80 120 160km
  • 6. 10 BOROSI CONCESSIONS AREA CALIBREMINING.COM 11 BOROSI GOLD, SILVER AND COPPER CONCESSIONS – “Mining triangle” CALIBRE/B2Gold 1 PRIMAVERA Borosi Concessions Gold-Copper 2 Minnesota Borosi Concessions Gold-Copper m 5k 27 NICARAGUA Cerro Cola Blanca Forest Reserve 100% CALIBRE m 5k 27 Managua NICARAGUA Cerro Cola Blanca Forest Reserve Managua 3 CERRO AEROPUERTO Gold-Silver Riscos de Oro NI43-101 Inferred Resource Bonanza Riscos de Oro 707,750 oz Au Bonanza Blag Bonanza (Gold Mine) 3.14M oz Ag 2.8M OZS PAST PRODUCTION Bonanza (Gold Mine) 2.8M OZS PAST PRODUCTION 5 4 LA LUNA 2 Minnesota Minnesota 4 Gold-Silver NI43-101 Inferred Resource La Luna 127,700 oz Au La Luna Rosita 1.74M oz Ag Rosita 6 5 RISCOS DE ORO Gold-Silver Santa RitaRita Santa NI43-101 Inferred Resource 222,300 oz Au Cerro Banacruz Cerro Banacruz 4.14M oz Ag 1 Forest Reserve Forest Reserve Primavera Primavera CALIBRE/ALDER RESOURCES Prospects Prospects 100% Calibre 6 ROSITA 100% Calibre Copper-Gold-Silver Calibre-Alder Option Area NI 43-101 Inferred Resource Calibre-Alder Option Area Cerro Siuna Calibre-B2Gold Option Area 108M lbs Cu Aeropuerto Cerro 3 Siuna AeropuertoLA LUZ (Gold Mine) 0 5 10 Calibre-B2Gold Option Area 15 20km 118,000 oz Au 2.35M oz Ag 2.7M OZS PAST PRODUCTION 0 5 10 15 20km LA LUZ (Gold Mine) 2.7M OZS PAST PRODUCTION
  • 7. 12 PRIMAVERA PROJECT CALIBREMINING.COM 13 Borosi Concessions PRIMAVERA GOLD/COPPER PROJECT PROJECT HIGHLIGHTS 0km 20 40 » Road accessible with national power grid located 1.2 km from the project, 8km from town of Rosita » Subdued topography with main land use being subsistence farming and AIRBORNE RADIOMETRIC SURVEY ranching » Joint Venture with B2Gold: B2Gold can earn a 51% interest in Primavera, as well as 322 sq km of surrounding concessions, by spending $8M by June, 2014 (~$6.0 spent to June 2012). B2Gold may elect, once earn-in is complete, to carry an individual prospect within the concession area through a Preliminary Feasibility Study for an additional 14% interest in the project » Updated Airborne geophysical survey completed over a large 5km by 5km interpreted intrusive/volcanic complex. Additional ground surveys underway » 13 drill holes completed totaling 3,938m » Extensive exploration and 10,000 metre phase II drilling program underway Intrusive/Volcanic (2 rigs total) Complex » Primavera is geologically similar to Newcrest Mining Limited’s Cadia- Ridgeway porphyry gold/copper mine in NSW, Australia where underground and open pit reserves contain 23.6M oz Au and 8.3B lbs Cu* PRIMAVERA GOLD-COPPER DISCOVERY *Newcrest Mining Limited website
  • 8. 14 PRIMAVERA PROJECT CALIBREMINING.COM 15 Borosi Concessions PRIMAVERA GOLD/COPPER PROJECT SOIL GEOCHEMISTRY 0km 20 40 GOLD IN SOIL GEOCHEMISTRY COPPER IN SOIL GEOCHEMISTRY TRENCH RESULTS HIGHLIGHTS Trench ID Interval (m) Gold (g/t) Copper (ppm) » ver 800 m by 300 m gold/copper soil geochemistry anomaly (open) O PRTR11-005 51.25 1.53 680 » dditional gold/copper soil geochem anomalies have been outlined in the A PRTR11-010 107.00 0.78 980 25km2 Primavera porphyry target area PRTR11-011 179.40 0.63 997 » renches returned long intervals of continuous gold/copper mineralization T PRTR11-012 58.00 0.70 1313 including 179.4m grading 0.63g/t Au and 997 ppm Cu PRTR11-013 49.50 0.25 1100 » ery sparse rock outcrop in region with up to 10m of overburden V PRTR11-014 51.70 0.42 1286 and saprolite
  • 9. 16 PRIMAVERA PROJECT CALIBREMINING.COM 17 PRIMAVERA GOLD/COPPER PROJECT RESULTS Borosi Concessions PRIMAVERA DRILL PLAN » old/copper mineralization has been intersected in drill holes over a 300m by 300m G area and to a depth of 300m with mineralization comprised of quartz-magnetite- chalcopyrite-bornite veins and vein stockwork within broad zones of potassically and 0km 20 40 propylitically-altered intermediate volcanic and intrusive rocks » 4.0M program planned by B2Gold for 2012 $ » rimavera is geologically similar to Newcrest Mining Limited’s Cadia-Ridgeway gold/ P copper mine (23.6M oz Au and 8.3B lbs Cu) PRIMAVERA SELECT DRILL RESULT HIGHLIGHTS* Drill Hole From To Length Gold Copper AuEq** (m) (m) (m) (g/t) (ppm) (g/t) PR-11-001 0.00 276.80 276.80 0.50 2,146 0.84 includes 0.00 103.00 103.00 0.85 3,240 1.36 PR-11-002 1.5 263.20 261.70 0.78 2,966 1.25 includes 1.5 209.00 207.50 0.89 3,378 1.42 includes 74.50 209.00 134.50 1.01 3,561 1.57 PR -11-003 4.00 327.20 323.20 0.41 1,843 0.70 includes 4.00 150.50 146.50 0.65 2,742 1.08 PR-12-005 207.50 372.50 165.00 0.31 1,713 0.58 PR-12-006 12.00 102.00 90.00 0.21 1,315 0.42 PR-12-007 7.70 255.00 247.30 0.22 1,097 0.39 includes 156.00 197.00 41.00 0.34 1,760 0.62 PR-12-008 107.65 280.00 172.35 0.48 2,401 0.86 includes 131.50 187.00 55.50 0.67 3,507 1.22 includes 187.00 280.00 93.00 0.41 1,978 0.72 includes 280.00 382.50 102.50 0.23 1,139 0.41 PR-12-10 79.00 94.40 15.40 0.59 4,325 1.27 PR-12-11 6.95 166.48 159.53 0.46 2,008 0.78 I ncludes 6.95 95.65 88.70 0.53 2,225 0.88 PR-12-013 24 46.5 22.5 0.44 2,090 0.77 *Complete drill results available on Calibre Mining’s website **AuEq (g/t) Gold Equivalent calculated using 1,300/oz gold and $3.00/lb copper and metallurgical recoveries and net smelter returns are assumed to be 100% Note: Holes 1-3 released Jan. 20, 2012, Holes 4-10 released April 16, 2012 and holes 11-13 released June 28, 2012
  • 10. 18 PRIMAVERA PROJECT CALIBREMINING.COM 19 Borosi Concessions PRIMAVERA GOLD/COPPER PROJECT DRILL HOLES PR11-002, PR12-008, PR12-011 DRILL HOLE PR12-008 0km 20 40 PR-12-011 PR-11-002 159.53m grading 0.46 261.70m grading 0.78 g/t Au, 0.20% Cu g/t Au, 0.30% Cu PR-12-008 247.35m grading 0.43 g/t Au, 0.21% Cu Au (g/t) Cu (%) PR11-002 INTERCEPTED: » 261.70m grading 0.78 g/t Au, 0.30% Cu » Continuos Gold-Copper Mineralization PR12-008 INTERCEPTED: » 247.35m grading 0.43 g/t Au, 0.21% Cu PR12-008 INTERCEPTED: including 172.35m grading 0.48 g/t Au, 0.24% Cu » 172.35m grading 0.48 g/t Au, 0.24% Cu PR12-011 PICTURED DRILL INTERCEPT ASSAYED » 159.53m grading 0.46 g/t Au, 0.20% Cu » .52m @ 0.59g/t Au and 0.29% Cu 5 including 88.7m grading 0.53 g/t Au, 0.22% Cu (Section 196.93m-202.45m of Hole PR12-008) *PR12-008/011 were analyzed at Inspectorate Labs in Vancouver
  • 11. 20 PRIMAVERA PROJECT CALIBREMINING.COM 21 PRIMAVERA PORPHYRY Gold/copper mineralization - DISTRICT POTENTIAL 25 Km 2 Porphyry Gold/Copper Target Area Primavera Porphyry SYSTEMS ARE KNOWN TO Copper Hill OCCUR IN CLUSTERS Santa Juana San Francisco District Exploration Potential » Lidar Survey Completed » Airborne geophysical survey underway » Soil geochem grids expanded » IP survey planned
  • 12. MINNESOTA PROJECT CALIBREMINING.COM 22 CALIBREMINING.COM 23 Borosi Concessions MINNESOTA PORPHYRY Gold/copper PROJECT 0km 20 40 GOLD IN SOIL GEOCHEMISTRY COPPER IN SOIL GEOCHEMISTRY INtrusive Rock INtrusive Rock Boundary Boundary TRENCH RESULTS HIGHLIGHTS » located 20 kilometres northwest of the Primavera gold-copper project Trench ID Interval (m) Gold (g/t) » successfully outlined porphyry-style mineralization delineated over 1.75km BRTR11-044 6.40 5.56 by 1.25km BRTR11-047 8.00 6.35 »5 00m by 250m gold and copper soil anomaly BRTR11-053 4.65 1.51 » 39.5 metres of face sampling of artisanal workings 3 BRTR11-054 6.00 2.12 BRTR11-057 12.80 1.27 » etailed geological mapping over 15 square kilometres and reconnaissance d geologic mapping over 52 square kilometres
  • 13. 24 SELECTED PORPHYRY GOLD/COPPER DEPOSITS/MINES CALIBREMINING.COM 25 SELECTED PORPHYRY GOLD/COPPER DEPOSITS/MINES HONDURAS Deposit Tonnes Au Cu Au Eq. Contained Au Contained Cu (Mt) (g/t) (%) (g/t)* (Million ozs) (Billion lbs) Cerro Casale 1,200 0.59 0.22 0.94 23.1 5.78 Chapada 429 0.24 0.26 0.65 3.1 2.15 El Morro 537 0.49 0.52 1.31 8.2 6.08 PRIMAVERA Agua Rica 908 0.22 0.49 1.00 22.1 9.78 Porphyry Gold-Copper Project Maricung 269 0.70 0.00 0.70 6.0 0.00 Alumbrera 390 0.51 0.47 1.25 6.4 4.03 NICARAGUA Kemess South 109 0.71 0.23 1.07 2.5 0.56 Mt. Milligan 531 0.34 0.20 0.66 6.0 2.12 Cobra Panama 2,143 0.07 0.41 0.72 4.9 19.59 Caribbean Sea Cerro Colorado 1,400 0.08 0.78 1.31 3.5 24.00 Cadia-Ridgeway 1,290 0.58 0.30 1.06 23.6 8.30 Primavera** - 0.61 0.25 1.01 - - * Au Eq. (g/t): Gold Equivalent calculated using $1,300/oz gold and $3.00/lb copper and metallurgical recoveries and net smelter returns COBRA PANAMA are assumed to be 100%. 19.6 B lbs Copper, 4.9M ozs Gold ** Weighted average grade of PR-11-001, PR-11- COSTA RICA 002, PR-11-003 and PR-12-008 Resource Information derived from Website Sources. Pacific Ocean PANAMA CERRO COLORADO 24.8 B lbs Copper, 3.5M ozs Gold
  • 14. 26 RISCOS DE ORO PROJECT CALIBREMINING.COM 27 Borosi Concessions RISCOS DE ORO PROJECT DISTRICT POTENTIAL 0km 20 40 100% CALIBRE OWNED » ow Sulfidation Epithermal Gold-Silver Vein District L » omparable to nearby Bonanza Camp in geology, mineralization, and C structure (past production of +2.8 million ozs Au) » old – Silver System extends over 7 km from the El Paraiso and Murcielago G targets Northeast towards Riscos de Oro » ompleted 9,427m of resource delineation drilling at Riscos in 37 holes C with epithermal gold-silver intercepts including 7.69 g/t Au, 211.80 g/t Ag over 10.6m » istoric trenching at Murcielago adit 7.0 Km SW of Riscos returned H 12.4 g/t Au over 3.0 metres NI 43-101 GOLD/SILVER RESOURCE AT RISCOS DE ORO 100% CALIBRE OWNED Calibre Mining Corp. Inferred Resource (using a 0.6 g/t AuEq cutoff grade) Tonnes and Grade Total Ounces Zone Tonnes Grade Grade Grade Contained Au Contained Ag Contained (g/t) (Au g/t) (Aq g/t) (AuEq g/t) (ounces) (ounces) (ounces AuEq) Upper 1,539,000 2.45 64.42 3.46 121,200 3,188,000 Lower 620,000 5.07 47.87 5.82 101,000 954,000 Total 2,159,000 3.20 59.67 4.14 222,300 4,142,000 287,100 1. CIM definition standards were followed for the resource estimate. 2. The 2012 resource models used Inverse Distance grade estimation within a three-dimensional block model with mineralized zones defined by wireframed solids. 3. A base cutoff grade of 0.6 g/t AuEq was used for reporting resources with capping of silver grades at 591 g/t. 4. A density of 2.65 g/cm3 was applied. 5. Numbers may not add exactly due to rounding. 6. Gold Equivalent (AuEq) calculated using $1264 /oz Au for gold and $19.78/oz Ag for silver and metallurgical recoveries and net smelter returns are assumed to be 100%. 7. Mineral Resources that are not mineral reserves do not have economic viability 8. The quantity and grade of reported inferred resources in this estimation are uncertain in nature and there has been insufficient exploration to define these inferred resources as an indicated or measured mineral resource and it is uncertain if further exploration will result in upgrading them to an indicated or measured mineral resource category.
  • 15. 28 CERRO AEROPUERTO AND LA LUNA PROJECTS CALIBREMINING.COM 29 NI 43-101 GOLD/SILVER RESOURCES CERRO AEROPUERTO, LA LUNA Riscos Borosi Concessions 100% CALIBRE OWNED Calibre Mining Corp. Inferred Resource (using a 0.6 g/t AuEq cutoff grade) 0km 20 40 Tonnes and Grade Total Ounces La Luz Mine Deposit Tonnes Gold Silver Au Eq1 Gold Silver Au Eq1 (g/t) (g/t) (g/t) (oz) (oz) (oz) Cerro Aeropuerto 6,052,000 3.64 16.16 3.89 707,750 3,144,500 757,000 La Luna 2,539,000 1.56 14.01 1.78 127,700 1,143,570 146,000 Risco 2,159,000 3.20 59.67 4.14 222,300 4,142,000 287,000 1,057,750 8,430,070 1,190,000 1. * or Cerro Aeropuerto La Luna Gold Equivalent (Au Eq) calculated using gold price of US$1,058/oz and silver price F of US$16.57 /oz and for Riscos a gold price of US$1264/oz and silver price of US$19.78/oz. Assumes metallurgical recoveries and net smelter returns are to be 100% 2. Mineral resources that are not mineral reserves do not have economic viability. 3. A base cutoff grade of 0.6 g/t AuEq was used. Riscos estimate used a capping of silver grades at 591 g/t. a density of 2.65 g/cm3 was applied. Numbers may not add exactly due to rounding. CERRO AEROPUERTO DRILL HOLES NI 43-101 COPPER/GOLD/SILVER RESOURCES AT ROSITA Borosi Concessions Joint Venture with AlDer Resources Calibre Mining Corp. and Alder Resources Inferred Resource (using a 0.15% Copper cutoff grade) 0km 20 40 Tonnes and Grade Total Resources Deposit Tonnes Gold Silver Cu Gold Silver Cu (g/t) (g/t) (%) (oz) (oz) (lbs) Rosita Stock Piles 7,950,000 0.46 9.20 0.62 118,000 2.35M 108M 1. Base case is reported at a 0.15% copper equivalent cut-off grade which incorporates consideration of mining and processing cost, recoveries, commodity prices and selling cost. 2. Estimate assumes a long term copper price of US$2.90/lb, a gold price of US$1,200/oz and a silver price of US$24/oz. 3. Rounding as required by NI 43-101 reporting guidelines may result in apparent summation differences. 4. Tonnage and grade measurements are in metric units. Contained gold and silver ounces are reported as troy ounces, contained copper pounds as imperial pounds. 5. Mineral resources that are not mineral reserves do not have demonstrated economic viability. The estimate of mineral resources may be materially affected by environmental, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues. 6. The quantity and grade of reported inferred mineral resources in this estimation are uncertain in nature and there has been LA LUNA DRILL HOLES insufficient exploration to define these inferred mineral resources as indicated or measured mineral resources and it is uncertain if further exploration will result in upgrading them to indicated or measured mineral resources.
  • 16. 30 CALIBRE/ALDER OPTION CALIBREMINING.COM 31 Borosi Concessions FORMER SANTA RITA COPPER-GOLD MINE CALIBRE/ALDER OPTION 0km 20 40 » ptioned to Alder Resources; Alder to spend C$4.0 million over the O next four years to earn a 65% stake in Calibre’s Rosita D Concession » osita D concession: 3,356 hectares - only 5% of Calibre’s concessions R in the Mining Triangle » istoric open pit Santa Rita copper-gold mine: total historic H production from skarn mineralization estimated at 305 M lbs of Cu, 177,737 ozs of Au, and 2,629,720 ozs of Ag from 5,924,572 tons of ore (Arengi, 2002) » n May 9, 2012 Alder Resources Announced a NI 43-101 Inferred O Resource estimate of 7.95 Mt averaging 0.62% Cu, 0.46 g/t Au, and 9.2g/t Ag. Containing 108 M lbs copper, 118,500 oz gold and 2.35 M oz of silver » hase One exploration commenced, including 8,000 metres of P diamond drilling. Results to date include: 8.0m grading 29.54 g/t Au and 8.0m grading 6.9 g/t Au (Alder news Release Sept 5, 2012)
  • 17. 32 33 Summary EXPLORATION TIME LINE NEWS Flow » icaragua provides a favorable, stable, environment N for mining. 2012 Q1 Q2 Q3 Q4 Exploration for Porphyry Calibre/B2Gold Option » alibre’s 100% owned gold-silver deposits host C Gold/Copper Systems 100% Calibre owned concessions inferred resources of 1,057,750 oz Au and 8,430,070 oz Ag (1,190,000 oz AuEq) Target Delineation Drilling Primavera / Calibre/B2Gold Rosita Copper Project / Calibre/Alder Resources Option »C alibre Mining, Featherstone Capital, B2Gold, and Data Review Riscos de Oro / Cerro Aeropuerto / La Luna / 100% Alder Resources are an established, experienced team Calibre who control over 860 km2 of underexplored territory Drill results from Santa Rita and Primavera + regional porphyry gold/ RESULTS in an area that has already produced more than 7.9M copper exploration and drill programs oz’s of gold. » ew porphyry gold-copper discovery at Primavera N with district potential. INFORMATION Mark Carruthers »W ith up to $7 million in exploration carried by Manager, Investor Relations calibre@calibremining.com partners, Calibre is able to rapidly advance its (604) 681.9944 opportunities in the Mining Triangle. Calibre Mining Corp. 1620 – 1066 West Hastings St. Vancouver, BC V6E 3X1 TSX.V: CXB calibremining.com
  • 18. Calibre Mining Corp. 1620 – 1066 West Hastings St. Vancouver, BC V6E 3X1 TSX.V: CXB calibremining.com