Calibre Mining is exploring for gold, copper and silver in Nicaragua. A key project is the Primavera gold-copper discovery, a joint venture with B2Gold. Drilling at Primavera has intersected gold and copper mineralization over a 300m by 300m area to depths of 300m. Trenching returned long intervals of mineralization including 179.4m grading 0.63g/t gold and 0.997% copper. Calibre has an experienced management team and partners including B2Gold, the largest gold producer in Nicaragua.

1. Advanced Gold, Copper and Silver Exploration
Mining Triangle, Nicaragua
TSX.V: CXB
July 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. Stable Environment: PROLIFIC MINING DISTRICT
»
Stable government, with a political environment favorable
to mining
» Prolific “Mining Triangle” has produced over 7.9M oz’s of gold
»
Calibre and its partners control over 860 km2 of underexplored project
area in the region
Team AND PARTNERS: Experienced, Successful
» Calibre Mining Proven management with decades of mining and public
company experience
»
Featherstone Capital Strong history of success. Have created billions of
dollars in Shareholder Value
» B2Gold Nicaragua’s largest gold producer with two mines and a strong
portfolio of development assets
»
Alder Resources Experienced management with focus on exploration in
the Americas
Calibre’s Borosi Gold-Copper-Silver Project
Mining Triangle of Northeast Nicaragua, Central America
InvestMENT Highlights
New Discovery: PRIMAVERA GOLD-COPPER PROJECT
»
Primavera porphyry gold/copper discovery
»
Thirteen drill holes completed totaling 3,938m
»
Discovery drill hole (Jan. 2012): 261.7m grading 0.78 g/t Au, 0.30% Cu
»
Joint Venture with B2Gold. B2Gold(Nicaragua’s largest gold producer)
can earn a 51% interest in 322km2
of concessions including Primavera
» Extensive exploration and 10,000 metre phase II drilling program underway
(2 rigs total)
» $4.0M program planned by B2Gold for 2012
» 25km2
porphyry gold/copper target area at Primavera
Established ProjectS: Proven PARTNERS
»
Calibre 100%-owned NI 43-101 Compliant Inferred Resource totaling
835,000 ozs Gold and 4.3 million ozs Silver
»
100%-owned Riscos de Oro epithermal gold-silver project: 9,427m
delineation drilling completed to date
5
CALIBREMINING.COM
4 CALIBRE INVESTMENT HIGHLIGHTS

4. Calibre Mining Corp
Greg Smith, P.Geo President CEO, Director
»
23+ years exploration experience with both junior senior operations;
»
Involved in successfully outlining 10+ million ounces of gold discoveries.
Paulo Santos, CA Chief Financial Officer
»
10+ years experience with public accounting, auditing, and regulatory
compliance
Edward Farrauto, CGA Director
»
20+ years experience as CFO and director of public companies;
»
Founder and director of several public companies;
George Salamis Director
»
20+ years exploration, development and operations experience;
»
President CEO of Edgewater Exploration Ltd.
Hon. John Reynolds, P.C. Director
»
35+ years experience in politics, former Member of Parliament, and a
member of the Queen’s Privy Council for Canada;
»
Strategic Senior Advisor at McMillan LLP.
Featherstone Capital
Douglas B. Forster, M.Sc., P.Geo Executive Chairman of the Calibre Board
»
President CEO of Featherstone Capital Inc.
»
30+ years of resource project development, MA, equity finance and
public company management;
»
Founder and director of numerous public companies;
Blayne Johnson Lead Director of Calibre Board
»
25 years of capital markets experience;
»
Former VP of First Marathon Securities
»
Chairman of Featherstone Capital Inc.
EXPERIENCED Team PARTNERS
B2Gold
Vancouver based gold producer led by Clive Johnson and Tom Garagan,
with two gold mines in Nicaragua and a strong portfolio of development and
exploration assets in Nicaragua, Colombia, Uruguay and Namibia B2Gold was
founded in 2007 by the former executive and management team of Bema
Gold Corporation.
Alder Resources
Toronto-based junior exploration company with a focus on exploration for
base and precious metals in the Americas.
SHARE STRUCTURE
Issued Outstanding 187,910,918
Options 15,855,000
Yamana Warrants 10,000,000
B2Gold Warrants 10,000,000
Fully Diluted 223,765,918
Fully Diluted Cash Position $22,417,250
Working Capital $6,000,000
SIGNIFICANT SHAREHOLDERS
B2Gold Corp. 10.6%
Management 10.0%
7
CALIBREMINING.COM
6 CALIBRE TEAM

5. Nicaragua: Stable, Under Explored
Mining Environment
»
Democratic Republic with President Ortega elected to a new 5 year term
in Nov. 2011
»
Gold is Nicaragua’s No. 3 export
»
Gold has helped Nicaragua’s economy grow by 4% annually in the past year,
the highest rate in Central America
»
Annual gold production has more than doubled in the past 3 years
»
Supportive mining laws, including favourable tax regime
»
25 year exploration and 50 year exploitation permits
»
Economist Intelligence Unit ranks Nicaragua as one of the safest countries
in Central America
HONDURAS
NICARAGUA
Borosi
Concessions
Managua
Lake
Nicaragua
La Libertad (Gold Mine)
B2GOLD CORP.
El Limon (Gold Mine)
B2GOLD CORP.
Bonanza
(Gold Mine)
Siuna Rosita and
Primavera
Caribbean
Sea
Pacific Ocean
EL SALVADOR
COSTA RICA
Riscos de Oro
Puerto Cabezas
(Airport)
0 20 40 80 120 160km
BOROSI CONCESSION AREA
9
CALIBREMINING.COM
8 WORKING IN NICARAGUA

6. Cerro Cola Blanca
Forest Reserve
Prospects
100% Calibre
Calibre-Alder Option Area
Calibre-B2Gold Option Area
Cerro Banacruz
Forest Reserve
NICARAGUA
Borosi Concessions
Managua
2
7
5
k
m
0 5 10 15 20km
Siuna
Riscos de Oro
Primavera
Cerro
Aeropuerto
Rosita
Minnesota
Santa Rita
Bonanza
La Luna
Bonanza (Gold Mine)
2.8M OZS PAST PRODUCTION
LA LUZ (Gold Mine)
2.7M OZS PAST PRODUCTION
BOROSI GOLD, SILVER AND COPPER
CONCESSIONS – “Mining triangle”
3
Cerro Cola Blanca
Forest Reserve
Prospects
100% Calibre
Calibre-Alder Option Area
Calibre-B2Gold Option Area
Cerro Banacruz
Forest Reserve
NICARAGUA
Borosi Concessions
Managua
2
7
5
k
m
0 5 10 15 20km
Siuna
Riscos de Oro
Primavera
Cerro
Aeropuerto
Rosita
Minnesota
Santa Rita
Bonanza
La Luna
Bonanza (Gold Mine)
2.8M OZS PAST PRODUCTION
LA LUZ (Gold Mine)
2.7M OZS PAST PRODUCTION
6
2
5
4
1
CALIBRE/B2Gold
1 PRIMAVERA
Gold-Copper
2 Minnesota
Gold-Copper
100% CALIBRE
3 CERRO AEROPUERTO
Gold-Silver
NI43-101 Inferred Resource
707,750 oz Au
3.14M oz Ag
4 LA LUNA
Gold-Silver
NI43-101 Inferred Resource
127,700 oz Au
1.74M oz Ag
5 RISCOS DE ORO
Gold-Silver
9,427m of drilling completed
CALIBRE/ALDER
RESOURCES
6 SANTA RITA
Copper-Gold
Former open pit copper mine
produced 305M lbs Cu
11
CALIBREMINING.COM
10 BOROSI CONCESSIONS AREA

7. PRIMAVERA GOLD/COPPER PROJECT
PROJECT HIGHLIGHTS
»
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
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
» Second diamond drill rig being added to the program (2 rigs in total)
»
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*
AIRBORNE RADIOMETRIC SURVEY
PRIMAVERA GOLD-COPPER DISCOVERY
Intrusive/Volcanic
Complex
Borosi Concessions
0km 20 40
*NewcrestMiningLimitedwebsite
13
CALIBREMINING.COM
12 PRIMAVERA PROJECT

8. PRIMAVERA GOLD/COPPER PROJECT
SOIL GEOCHEMISTRY
GOLD IN SOIL GEOCHEMISTRY
TRENCH RESULTS
Trench ID Interval (m) Gold (g/t) Copper (ppm)
PRTR11-005 51.25 1.53 680
PRTR11-010 107.00 0.78 980
PRTR11-011 179.40 0.63 997
PRTR11-012 58.00 0.70 1313
PRTR11-013 49.50 0.25 1100
PRTR11-014 51.70 0.42 1286
HIGHLIGHTS
COPPER IN SOIL GEOCHEMISTRY
»
Over 800 m by 300 m gold/copper soil geochemistry anomaly (open)
»
Additional gold/copper soil geochem anomalies have been outlined in the
25km2
Primavera porphyry target area
»
Trenches returned long intervals of continuous gold/copper mineralization
including 179.4m grading 0.63g/t Au and 997 ppm Cu
»
Very sparse rock outcrop in region with up to 10m of overburden
and saprolite
Borosi Concessions
0km 20 40
15
CALIBREMINING.COM
14 PRIMAVERA PROJECT

9. PRIMAVERA GOLD/COPPER PROJECT RESULTS
PRIMAVERA SELECT DRILL RESULT HIGHLIGHTS*
»
Gold/copper mineralization has been intersected in drill holes over a 300m by 300m
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
propylitically-altered intermediate volcanic and intrusive rocks
»
$4.0M program planned by B2Gold for 2012
»
Primavera is geologically similar to Newcrest Mining Limited’s Cadia-Ridgeway gold/
copper mine (23.6M oz Au and 8.3B lbs Cu)
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
Includes
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
**AuEq (g/t) Gold Equivalent calculated using 1,300/oz gold and $3.00/lb copper and metallurgical
Note: Holes 1-3 released Jan. 20, 2012, Holes 4-10 released April 16, 2012 and holes 11-13 released June 28, 2012
PRIMAVERA DRILL PLAN
*Complete drill results available on Calibre Mining’s website
recoveries and net smelter returns are assumed to be 100%
Borosi Concessions
0km 20 40
17
CALIBREMINING.COM
16 PRIMAVERA PROJECT

10. 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
including 172.35m grading 0.48 g/t Au, 0.24% Cu
PR12-011
» 159.53m grading 0.46 g/t Au, 0.20% Cu
including 88.7m grading 0.53 g/t Au, 0.22% Cu
PRIMAVERA GOLD/COPPER PROJECT DRILL HOLES
PR11-002, PR12-008, PR12-011
Au (g/t)
Cu (%)
PR12-008 INTERCEPTED:
» 172.35m grading 0.48 g/t Au, 0.24% Cu
PICTURED DRILL INTERCEPT ASSAYED
»
5.52m @ 0.59g/t Au and 0.29% Cu
(Section 196.93m-202.45m of Hole PR12-008)
DRILL HOLE PR12-008
Borosi Concessions
0km 20 40
*PR12-008/011 were analyzed at Inspectorate Labs in Vancouver
PR-12-008
PR-11-002
PR-12-011
261.70m grading 0.78
g/t Au, 0.30% Cu
159.53m grading 0.46
g/t Au, 0.20% Cu
247.35m grading 0.43 g/t
Au, 0.21% Cu
19
CALIBREMINING.COM
18 PRIMAVERA PROJECT

11. PRIMAVERA PORPHYRY Gold/copper mineralization - DISTRICT POTENTIAL
25 Km Porphyry Gold/Copper
Target Area
2
Copper Hill
Primavera
Santa Juana
San Francisco
District Exploration Potential
» Lidar Survey Completed
» Airborne geophysical survey underway
» Soil geochem grids expanded
» IP survey planned
Porphyry SYSTEMS ARE KNOWN TO
OCCUR IN CLUSTERS
21
CALIBREMINING.COM
20 PRIMAVERA PROJECT

12. HONDURAS
NICARAGUA
Caribbean Sea
Pacific Ocean
COSTA RICA
PANAMA
PRIMAVERA
Porphyry Gold-Copper Project
CERRO COLORADO
24.8 B lbs Copper, 3.5M ozs Gold
COBRA PANAMA
19.6 B lbs Copper, 4.9M ozs Gold
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
Agua Rica 908
0.22 0.49 1.00 22.1 9.78
Maricung 269
0.70 0.00 0.70 6.0 0.00
Alumbrera 390
0.51 0.47 1.25 6.4 4.03
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
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 - -
SELECTED PORPHYRY GOLD/COPPER
DEPOSITS/MINES
* Au Eq. (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%.
** Weighted average grade of PR-11-001, PR-11-
002, PR-11-003 and PR-12-008
Resource Information derived from Website
Sources.
23
CALIBREMINING.COM
22 SELECTED PORPHYRY GOLD/COPPER DEPOSITS/MINES

13. RISCOS DE ORO PROJECT
DISTRICT POTENTIAL
100% CALIBRE OWNED
»
Low Sulfidation Epithermal Gold-Silver Vein District
»
Comparable to nearby Bonanza Camp in geology, mineralization,
and structure (past production of +2.8 million ozs Au)
»
Gold – Silver System extends over 7 km from the El Paraiso and
Murcielago targets Northeast towards Riscos de Oro
»
Completed 9,427m of resource
delineation drilling at Riscos in 37 holes
with epithermal gold-silver intercepts
including 7.69 g/t Au,
211.80 g/t Ag over 10.6m
»
Historic trenching at Murcielago adit
7.0 Km SW of Riscos returned
12.4 g/t Au over 3.0 metres
»
Multiple parallel veins identified
DRILLING DETAILS
»
9,427m of delineation drilling completed
»
Former open pit and underground mine to 90m depth only
»
Gold-Silver mineralization defined over 725m strike length to a depth of 300m
»
Multiple mineralized veins and structures
Drilling Highlights
»
RD11-012: 7.69 g/t Au, 211.80 g/t Ag over 10.6m
»
RD11-010: 10.25 g/t Au, 288.25 g/t Ag over 5.4m
»
RD10-009: 4.23 g/t Au, 384.86 g/t Ag over 8.53m
Borosi Concessions
0km 20 40
25
CALIBREMINING.COM
24 RISCOS DE ORO PROJECT
A
A1

14. »
Metallurgical recoveries and net smelter returns are assumed to be 100%
NI 43-101 GOLD/SILVER
RESOURCES AT CERRO
AEROPUERTO AND LA LUNA
100% CALIBRE OWNED
Calibre Mining Corp. Global Inferred Resource (using a 0.6 g/t AuEq 1,3 cutoff grade)2
Tonnes and Grade Total Ounces
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
835,450 4,288,070 903,000
CERRO AEROPUERTO DRILL HOLES
Borosi Concessions
0km 20 40
LA LUNA DRILL HOLES
Borosi Concessions
0km 20 40
La Luz Mine
Calibre is currently valued at $46/oz Gold with no value for Primavera discovery
»
Au Eq cutoff equivalent calculated using Wardrop’s estimated gold price of US$1,058/oz and silver
price of US$16.57 /oz
»
Mineral resources that are not mineral reserves do not have economic viability.
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27
CALIBREMINING.COM
26 CERRO AEROPUERTO AND LA LUNA PROJECTS

15. FORMER SANTA RITA
COPPER-GOLD MINE
CALIBRE/ALDER OPTION
»
Optioned to Alder Resources; Alder to spend C$4.0 million over the
next four years to earn a 65% stake in Calibre’s Rosita D Concession
»
Rosita D concession: 3,356 hectares - only 5% of Calibre’s concessions
in the Mining Triangle
»
Historic open pit Santa Rita copper-gold mine: total historic
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)
»
On May 9, 2012 Alder Resources Announced a NI 43-101 Inferred
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.
»
Phase One exploration commenced, including 8,000 metres
of diamond drilling
Borosi Concessions
0km 20 40
SANTA RITA HISTORICAL OPEN PIT
29
CALIBREMINING.COM
28 CALIBRE/ALDER OPTION

16. Summary
»
Nicaragua provides a favorable, stable, environment
for mining.
»
The ‘Mining Triangle’ has proven potential and is
under-explored.
»
Calibre Mining, Featherstone Capital, B2Gold, and
Alder Resources are an established, experienced team
who control over 860 km2 of underexplored territory
in an area that has already produced more than 7.9M
oz’s of gold.
»
New porphyry gold-copper discovery at Primavera
with district potential.
»
With up to $7 million in exploration carried by
partners, Calibre is able to rapidly advance its
opportunities in the Mining Triangle.
EXPLORATION TIME LINE NEWS Flow
INFORMATION
Mark Carruthers
calibre@calibremining.com
(604) 681.9944
Calibre Mining Corp.
1620 – 1066 West Hastings St.
Vancouver, BC V6E 3X1
TSX.V: CXB
calibremining.com
2012 Q1 Q2 Q3 Q4
Exploration for Porphyry
Gold/Copper Systems
Calibre/B2Gold Option
100% Calibre owned concessions
Target Delineation
Drilling
Primavera / Calibre/B2Gold
Rosita Copper Project / Calibre/Alder Resources Option
Data Review
Riscos de Oro / Cerro Aeropuerto / La Luna / 100%
Calibre
RESULTS
Drill results from Santa Rita and Primavera + regional porphyry gold/
copper exploration and drill programs

17. Calibre Mining Corp.
1620 – 1066 West Hastings St.
Vancouver, BC V6E 3X1
TSX.V: CXB
calibremining.com