1. Advanced Gold, Copper and Silver Exploration
Mining Triangle, Nicaragua
TSX.V: CXB
APRIL 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
» en drill holes completed totaling 3,199.10m
T
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 km2 of underexplored project
can earn a 51% interest in 322km2 of concessions including Primavera
area in the region » Second diamond drill rig being added to the program (2 rigs total)
» $4.0M program planned by B2Gold for 2012
Team AND PARTNERS: Experienced, Successful
» 25km2 porphyry gold/copper target area at Primavera
» Calibre Mining Proven management with decades of mining and public
company experience
Established ProjectS: Proven PARTNERS
» eatherstone Capital Strong history of success. Have created billions of
F
dollars in Shareholder Value » alibre 100%-owned NI 43-101 Compliant Inferred Resource totaling
C
835,000 ozs Gold and 4.3 million ozs Silver
» B2Gold Nicaragua’s largest gold producer with two mines and a strong
portfolio of development assets » 00%-owned Riscos de Oro epithermal gold-silver project: 9,427m
1
delineation drilling completed to date
» Alder Resources Experienced management with focus on exploration in
the Americas » oint Venture with Alder Resources Ltd. on the Rosita copper skarn project.
J

4. 6 CALIBRE TEAM CALIBREMINING.COM 7
EXPERIENCED Team PARTNERS
Calibre Mining Corp
B2Gold
Edward Farrauto, CGA President CEO, Director
Vancouver based gold producer led by Clive Johnson and Tom Garagan,
»
20+ years experience as CFO and director of public companies;
with two gold mines in Nicaragua and a strong portfolio of development and
» ounder and director of several public companies;
F exploration assets in Nicaragua, Colombia and Uruguay. B2Gold was founded
Paulo Santos, CA Chief Financial Officer in 2007 by the former executive and management team of Bema
» 10+ years experience with public accounting, auditing, and regulatory
Gold Corporation.
compliance
Greg Smith, P.Geo VP Exploration Alder Resources
»
23+ years exploration experience with both junior senior operations; Toronto-based junior exploration company with a focus on exploration for
» nvolved in successfully outlining 10+ million ounces of gold discoveries.
I 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 15,855,000
Yamana Warrants 10,000,000*
» Strategic Senior Advisor at McMillan LLP.
B2Gold Warrants 10,000,000
Fully Diluted 223,765,918
Featherstone Capital
Fully Diluted Cash Position $22,417,250
Douglas B. Forster, M.Sc., P.Geo Executive Chairman of the Calibre Board Working Capital $6,000,000
» 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;
* In conjunction with the purchase of the Borosi Concessions in 2009, Calibre granted 10 million
warrants to Yamana Gold (5 million exercisable at $0.50 and 5 million exercisable at $1.00). The
» Former VP of First Marathon Securities
warrants expire in July 2014 and are only exercisable if Calibre delineates at least 2.5 million NI 43-
101 Measured and Indicated compliant ounces of gold equivalent (total of gold and copper resources).
» 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
Gold-Copper
m
5k
27
NICARAGUA Cerro Cola Blanca
Forest Reserve 100% CALIBRE
Managua
3 CERRO AEROPUERTO
Gold-Silver
Bonanza
Riscos de Oro 5 NI43-101 Inferred Resource
707,750 oz Au
Bonanza (Gold Mine) 3.14M oz Ag
2.8M OZS PAST PRODUCTION
2 4 4 LA LUNA
Minnesota Gold-Silver
NI43-101 Inferred Resource
La Luna 127,700 oz Au
Rosita 1.74M oz Ag
6 5 RISCOS DE ORO
Gold-Silver
Santa Rita 9,427m of drilling completed
Cerro Banacruz
CALIBRE/ALDER
Forest Reserve
1 RESOURCES
Primavera
6 SANTA RITA
Copper-Gold
Prospects
Former open pit copper mine
100% Calibre produced 305M lbs Cu
Calibre-Alder Option Area
Cerro
Aeropuerto
3 Siuna Calibre-B2Gold Option Area
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
AIRBORNE RADIOMETRIC SURVEY
» 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 ($5.3 spent to March 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
» Airborne geophysical survey outlines a large 5km by 5km interpreted
intrusive/volcanic complex
» 10 drill holes completed totaling 3199.10m
» Second diamond drill rig being added to the program (2 rigs in total) Intrusive/Volcanic
» Primavera is geologically similar to Newcrest Mining Limited’s Cadia-
Complex
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
PR-12-005 PR-12-005
PR-12-007 PR-12-007
PR-12-008 PR-12-008 PR-12-006
PR-12-006
PR-11-001 PR-11-001
PR-11-002 PR-11-002
PR-12-011 PR-12-011
PR-12-009 PR-12-009
PR-11-003 PR-11-003
PR-12-004 PR-12-004
PR-12-010 PR-12-010
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
» ,199.10 metres of diamond drilling completed in 10 holes with an ongoing program
3 PRIMAVERA DRILL PLAN
using 2 drill rigs completing a program of infill and step-out drilling at the primavera
gold/copper system as well as drill testing additional porphyry and vein targets
» old/copper mineralization has been intersected in drill holes over a 300m by 300m
G 0km 20 40
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
$
» 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-12-007 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
PR-12-10*** 79.00 94.40 15.40 0.59 4,325 1.27
*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%
***Partial assay results for PR-12-10
Note: Hole PR-12-010 was analyzed at Inspectorate’s Labs in Vancouver

10. 18 PRIMAVERA PROJECT CALIBREMINING.COM 19
Borosi Concessions
PRIMAVERA GOLD/COPPER PROJECT DRILL HOLES
PR11-002, PR12-008
DRILL HOLE PR12-008
0km 20 40
PR-11-002
*
PR-12-008
Au (g/t)
Cu (ppm)
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
WEIGHTED AVERAGE GRADE ON SECTION: PICTURED DRILL INTERCEPT ASSAYED
» 254.52m grading 0.61 g/t Au, 0.26% Cu » .52m @ 0.59g/t Au and 0.29% Cu
5
(Section 196.93m-202.45m of Hole PR12-008)
*PR12-008 was 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. 22 SELECTED PORPHYRY GOLD/COPPER DEPOSITS/MINES CALIBREMINING.COM 23
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

13. 24 RISCOS DE ORO PROJECT CALIBREMINING.COM 25
Borosi Concessions
RISCOS DE ORO PROJECT
DISTRICT POTENTIAL
0km 20 40
100% CALIBRE OWNED
» ow Sulfidation Epithermal Gold-Silver Vein District
L
A
» omparable to nearby Bonanza Camp in geology, mineralization,
C
and structure (past production of +2.8 million ozs Au)
» old – Silver System extends over 7 km from the El Paraiso and
G
Murcielago targets Northeast towards Riscos de Oro
» ompleted 9,427m of resource
C
A1
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
» istoric trenching at Murcielago adit
H
7.0 Km SW of Riscos returned
12.4 g/t Au over 3.0 metres
» ultiple parallel veins identified
M
DRILLING DETAILS
» ,427m of delineation drilling completed
9
» ormer open pit and underground mine to 90m depth only
F
» old-Silver mineralization defined over 725m strike length to a depth of 300m
G
» ultiple mineralized veins and structures
M
Drilling Highlights
» D11-012: 7.69 g/t Au, 211.80 g/t Ag over 10.6m
R
» D11-010: 10.25 g/t Au, 288.25 g/t Ag over 5.4m
R
» D10-009: 4.23 g/t Au, 384.86 g/t Ag over 8.53m
R

14. 26 CERRO AEROPUERTO AND LA LUNA PROJECTS CALIBREMINING.COM 27
NI 43-101 GOLD/SILVER Borosi Concessions
RESOURCES AT CERRO
AEROPUERTO AND LA LUNA 0km 20 40
100% CALIBRE OWNED La Luz Mine
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
» u Eq cutoff equivalent calculated using Wardrop’s estimated gold price of US$1,058/oz and silver
A
price of US$16.57 /oz CERRO AEROPUERTO DRILL HOLES
» Mineral resources that are not mineral reserves do not have economic viability.
» etallurgical recoveries and net smelter returns are assumed to be 100%
M
Borosi Concessions
$140
C
alibre is currently valued at $46/oz Gold with no value for Primavera discovery
$120
$100 0km 20 40
$80
$60
$40
$20
$0
c.
c.
p.
tio c.
on
.
.
.
d.
.
.
d
td
td
.
old d
nc
er e
rp
td
ian s In
nc
In
n
or
g
ite
x G mite
Lt
ati
nL
nL
dI
sL
ra
Co
sI
sI
gC
als
im
als
rce
ve
or
ce
Ex Gol
ce
tio
ce
i
gL
ac up A
in
Au al L
rp
er
ur
ur
ou
ur
ra
ra
in
in
in
Co
so
so
in
so
es
plo
plo
cM
n
M
nM
o
Re
in
tio
Re
nR
Re
ath
old
Gr
ry
Ex
re
M
ifi
na
lta
ah
ho
an
lib
ga
rp
eG
ter
l la
in
ter
Vo
um
yp
di
e
Ca
Ca
sP
om
Ke
pe
wa
on
In
lra
Gr
Az
pu
Am
Or
ez
ge
an
Da
ym
Or
Ed
di
LA LUNA DRILL HOLES
Ly
Ol

15. 28 CALIBRE/ALDER OPTION CALIBREMINING.COM 29
Borosi Concessions
FORMER SANTA RITA
COPPER 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)
» ecent drilling results reported by Alder include: 12m grading
R
0.91% Cu, 1.00 g/t Au and 16.63 g/t Ag (Alder News Release
February 8, 2012) SANTA RITA HISTORICAL OPEN PIT
» hase One exploration commenced, including 8,000 metres
P
of diamond drilling

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

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