Advanced Gold-Copper-Silver Exploration

Borosi Concessions, Mining Triangle, Nicaragua

TSX.V: CXB June 2015

Partnered for Discovery

Certain statements in this document constitute “forwardlooking statements” which may not be based on historicalfact. Such forward looking statements involve known andunknown risk, uncertainties and other factors which maycause the actual results, performance or achievements of theCompany, or industry results to be materially different fromany future results, performance, or achievements expressedor implied by such forward looking statements. Such factorsinclude, among others, the following: actual results ofexploration and development activities; the costs and timingof the development of new deposits; future prices of preciousand base metals; accidents; risks inherent in mineralexploration; risks associated with development, constructionand mining operations; restrictions on foreign ownership; theCompany’s history of operating losses and uncertainty offuture profitability; uncertainty of access to additional capital;and environmental liability claims and insurance. Thispresentation is not an offer to purchase securities and doesnot constitute an offering document under Securitieslegislation.

Mr. Gregory Smith, P.Geo, the President and CEO of theCompany, is the Qualified Person as defined by NI 43-101, andhas prepared and approved the technical data andinformation in this presentation

FORWARD LOOKING STATEMENT

INVESTMENT HIGHLIGHTSCALIBRE INVESTMENT HIGHLIGHTS CALIBREMINING.COM 3

• IAMGOLD PARTNERSHIP:

• IAMGOLD spending $5M over 3 years,

• 2015, +5,500 metre Phase II drill program underway

• NEW DISCOVERIES; 4.8m grading 25.7 g/t Au and 35 g/t Ag and 6.0m grading 14.4 g/t Au

and 14.5 g/t Ag, 6.5m grading 16.9g/t Au and 20.9 g/t Ag

• 100% CALIBRE :

• Montes de Oro Target in the Siuna District – Drilling Q2 2015,

• NEW DISCOVERY; Trench with 52.3 metres grading 7.1 g/t gold and 27.5 metres grading

4.93 g/t gold within a 400 metre by 650 metre gold-silver-copper-zinc soil anomaly

• Recent $2M Strategic Investment by Pierre Lassonde

• B2GOLD PARTNERSHIP:

• B2GOLD Spending an additional $6m over 3 years,

• NEW DISCOVERY at Minnesota Gold Project,

• Discovery Trench 109m grading 1.58 g/t gold and open

• CALIBRE HAS MULTIPLE CHANCES FOR SUCCESS ON THE BOROSI CONCESSIONS

Partnered for

Discovery

EXPERIENCED TEAM

PARTNERS

CALIBRE MANAGEMENT / BOARD

Greg Smith, P.Geo President & CEO, Director» 25+ 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.

Julie Lassonde, Director» 17 years experience in financial, advisory, and engineering roles.

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.

Ryan King, Vice President» 10 years of resource sector, equity financing and public company experience

B2Gold Corp.Nicaragua’s largest gold producer led by Clive Johnson and Tom Garagan, withtwo gold mines in Nicaragua and one gold mine in the Philippines and a strongportfolio of development and exploration assets

IAMGOLD Corp.Mid tier gold producer with six operating gold mines on three continents and oneof the world’s three niobium mines.

Alder ResourcesToronto-based junior exploration company with a focus on exploration for base and precious metals in the Americas.

SHARE STRUCTUREIssued and Outstanding 222,910,918Options 21,200,000Warrants 12,500,000Fully Diluted 256,610,918Fully Diluted Cash Position $7,732,500Working Capital $2,000,000

Significant ShareholdersB2Gold Corp. 13.50%Pierre Lassonde 11.20%Management 9.00%

CALIBRE TEAM CALIBREMINING.COM 4

FEATHERSTONE CAPITAL

Douglas B. Forster, M.Sc., P.Geo Calibre Board Executive Chairman» President & CEO of Featherstone Capital Inc.» 30+ years of resource project development, M&A, 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.

SENIOR ADVISORRaymond Threlkeld» 30+ years of experience in the mineral resource industry» Previously held position of President and CEO of Rainy River Resources ltd and Western Goldfields before begin acquired» Former VP, Development of Barrick Gold Corp., responsible for placing more than 30 million ounces of gold into production in Africa, South America and Australia

» Democratic Republic with President Ortega elected to a 2nd 5 year term in Nov. 2011

» Gold is Nicaragua’s No. 1 export in 2013

» Gold has helped Nicaragua’s economy grow by 4% annually in recent years, the highest rate in Central America

» Annual gold production has more than doubled in the past 4 years

» Supportive mining laws, and favourable tax regime

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

NICARAGUA: STABLE & SAFEUNDER EXPLORED MINING ENVIRONMENT

WORKING IN NICARAGUA CALIBREMINING.COM 5

111111xplo

7.9 million ozs past gold production – District Underexplored

BOROSI CONCESSION AREA CALIBREMINING.COM 6

BlagRiscosDe Oro

Primavera

La Luz

Cerro Aeropuerto

Montes De Oro

Bambana La Luna

Minnesota

Santa Rita

Guapinol

SIUNA

BONANZA

ROSITA

MANAGUA

BOROSI CONCESSIONS

LaSorpresa

SantoThomas

1) IAMGOLD Option

a. Riscos de Orob. Guapinol; 2014 High grade Gold Discoveryc. La Sorpresa; 2015 High grade Gold Discoveryd. Blag and others

2) Calibre 100% Owned

a. Montes De Oro; High Grade Gold Discoveryb. Cerro Aeropuerto; 750K AuEq oz NI43-101 Resourcec. La Luz; Past Gold Producer (2.2M oz)

3) B2Gold Joint Venture

a. Minnesota; 2014 Gold Discoveryb. Primavera; Gold/Copper Porphyry Discovery

4) Alder Res. Optiona. Santa Ritab. Bambana

BOROSI GOLD, SILVER AND COPPER CONCESSIONS (785 KM2) “MINING TRIANGLE DISTRICT”

EASTERN BOROSI GOLD DISTRICT – Optioned to IAMGOLD (176 km2)

EASTERN BOROSI GOLD PROJECT CALIBREMINING.COM 7

» IAMGOLD has the right to earn 51% of the Eastern Borosi Project by spending $5 million and cash payments of $450,000 over three years

» IAMGOLD can earn a further 19% for a total of 70% by spending an additional $5 million and further payments of $450,000 over a second three year period

» Low Sulphidation Epithermal Gold-Silver District

» Multiple trends totaling more than 18 kilometres in length – each with a series of sub-parallel gold-silver structures

2012 – New Gold Resource at Riscos de Oro

2014 – High Grade Gold Discovery at Guapinol

2015 – Phase II Drill Program Underway

EASTERN BOROSI GOLD DISTRICT – Optioned to IAMGOLD

EASTERN BOROSI GOLD PROJECT CALIBREMINING.COM 8

Phase II +5,000m drill program underway testing new gold/silver

targets and following up on high grade gold/silver

intercepts from the Phase I program.

Budget: $1.5 million

5,500m Phase II Diamond Drill Program Underway

2014 – High Grade Gold Discovery at Guapinol

2015 – High Grade Gold Discovery at La Sorpresa

Riscos de Oro Resource; 2.2Mt @ 4.14g/t AuEq (287,000 oz)

EASTERN BOROSI GOLD DISTRICT – Optioned to IAMGOLD

EASTERN BOROSI GOLD PROJECT CALIBREMINING.COM 9

5,500m Phase II Diamond Drill Program Underway

2015 – High Grade Gold Discovery at Blag Gold-Silver Vein System

2015 Highlights;BL15-009; 9.92m @ 5.36 g/t Au and 194.6 g/t Ag (135.33 – 145.25m)

BL15-010; 12.82m @ 2.52 g/t Au and 246.4 g/t Ag (64.38 – 77.20m)

BL15-011; 10.74m @ 3.08 g/t Au and 381.3 g/t Ag (21.86 – 32.60m)

EASTERN BOROSI GOLD PROJECT CALIBREMINING.COM 10

EASTERN BOROSI GOLD PROJECT – Phase 1 Drilling

2014 – High Grade Gold Discovery at Guapinol

2015 – Phase II Drill Program Underway

B2GOLD JOINT VENTURE CALIBREMINING.COM 11

B2GOLD JOINT VENTURE and OPTION (322.3 km2)» Joint Venture with B2Gold: B2Gold have earned a 51% interest in 322 sq km of concessions, by spending $8M. B2Gold and Calibre Mining have entered into an agreement granting B2Gold an option to acquire a further 19% interest by spending an additional $6.0 million in project expenditures over 3 years.

Primavera

Minnesota

SantoThomas

Primavera Drilling2012

C

MINNESOTA GOLD PROJECT

GOLD GEOCHEMISTRY

MINNESOTA GOLD PROJECT CALIBREMINING.COM 12

B2GOLD/CALIBRE MINING JOINT VENTURE

» Soil / Rock Gold Anomaly > 3 km long

ID From (m) To (m) (m) Au (g/t)

MINTR14-001 0.00 14.55 14.55* 0.87

including 1.50 10.00 8.50 1.22

MINTR14-002 0.00 15.00 15.00* 0.41

MINTR14-003 0.00 6.00 6.00 0.21

MINTR14-005 2.00 3.50 1.50 0.77

MINTR14-006 0.00 14.80 14.80* 1.85

MNTR13-001 0.00 7.50 7.50 3.93

MNTR13-002 0.00 9.20 9.20 4.17

BRTR11-044 0.00 6.40 6.40 5.56

BRTR11-047 0.00 8.00 8.00 6.35

BRTR11-053 0.00 4.65 4.65 1.51

BRTR11-054 0.00 6.00 6.00 2.12

BRTR11-057 0.00 12.80 12.80 1.27

Highlight Trench109.6m grading 1.58 g/t Gold

Seven Reconnaissance drill holes completed in 2014

Highlight drill results include; MN14-001 31.35m grading 0.63g/t gold and 4.7 g/t SilverMN14-002 20.05m grading 0.40g/t gold and 5.7 g/t SilverMN14-004 47.00m grading 0.63g/t gold and 4.5g/t silverIncluding 25.6-30.1m (4.5m grading 3.43 g/t Au and 11.0g/t Ag)MN14-007 14.65m grading 0.44g/t gold and 6.2 g/t Silver

» Road accessible with national power grid located 1.2 km from the project, 8km from town of Rosita

» Airborne geophysical survey completed over a large 5km by 5km interpreted intrusive/volcanic complex. Additional ground surveys completed

» 32 drill holes completed totaling 13,414m

» The higher grade Gold/copper porphyry mineralization has been intersected in drill holes over a 300m by 300m area and to a depth of 300m

PRIMAVERA GOLD/COPPER PROJECT CALIBREMINING.COM 13

COPPER IN SOIL GEOCHEMISTRY GOLD IN SOIL GEOCHEMISTRY AIRBORNE RADIOMETRICS

PRIMAVERA GOLD/COPPER PROJECT; B2GOLD\CALIBRE JOINT VENTURE

» mineralization comprised of quartz-magnetite-chalcopyrite-bornite veins and vein stockwork within broad zones of potassically and propylitically-altered intermediate volcanic and intrusive rocks

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 2146 0.84

PR-11-002 1.50 263.20 261.70 0.78 2966 1.25

PR -11-003 4.00 327.20 323.20 0.41 1843 0.70

includes 4.00 150.50 146.50 0.65 2742 1.08

PR-12-005 207.50 372.50 165.00 0.31 1713 0.58

PR-12-008 107.65 280.00 172.35 0.48 2401 0.86

PR-12-011 6.95 166.48 159.53 0.46 2008 0.78

PR-12-016 0.00 201.35 201.35 0.77 3567 1.34

PR-12-023 0.00 455.80 455.80 0.20 1138 0.39

PR-12-024 655.60 656.70 1.10 18.28 252 18.33

and 673.00 674.50 1.50 11.95 2373 12.33

PRIMAVERA DRILL RESULTS HIGHLIGHTS*

PRIMAVERA GOLD/COPPER PROJECT RESULTS

*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

Metallurgical recoveries and net smelter returns are assumed to be 100%.Note: Holes 1-3 Jan. 20, 2012, Holes 4-10 April 16, 2012, holes 11-13 June 28, 2012 holes 14-32 Jan 2013

PRIMAVERA GOLD/COPPER PROJECT CALIBREMINING.COM 14

PICTURED DRILL INTERCEPT ASSAYED

» 5.52m @ 0.59g/t Au and 0.29% Cu (Section 196.93m-202.45m of Hole PR12-008)

>800m by 300m gold/copper soil geochemistry anomaly (open) with Additional gold/copper soil geochem anomalies outlined in the 25km2 Primavera porphyry target area.

247.35m @0.43 g/t Au,

0.21% Cu

PR-12-008

261.70m @0.78 g/t Au,

0.30% Cu

PR-11-002159.53m @

0.46 g/t Au, 0.20% Cu

PR-12-011

OPEN TODEPTH

DRILL HOLES PR11-002, PR12-008, PR12-011

2011 NEW GOLD/COPPER DISCOVERY Drill Hole PR11–001

277m grading 0.5 g/t Gold & 0.21 % Cu

SIUNA PROJECT 100% CALIBRE CALIBREMINING.COM 15

SIUNA DISTRICT – 100% Calibre (253km2)» Past Producing La Luz Mine / 43-101 Resource at Cerro Aeropuerto / New Discovery at Montes de Oro

La LuzCerro Aeropuerto

Montes De Oro

SIUNA

CerroLa Virgen

/

SIUNA DISTRICT (100% CALIBRE OWNED)

SIUNA DISTRICT 100% OWNED CALIBREMINING.COM 16

Historic La Luz MineOpen Pit

Cerro Aeropuerto

500m

La Luz MineOpen PitAnd Underground

Cerro Potosi

30.2m @2.83 g/t Au

91.5m @2.75 g/t Au

» Exploration by Calibre has defined a series of Targets with the same style as the 2.2Moz La Luz Mine

» Additional ground exploration work on going

La VIRGEN1km x 3km Au/Cu Anomaly

MONTES DE ORO; 1.4km x 500m Au/Ag/As/Cu/Zn Anomaly

» The Cerro Aeropuerto gold-silver high grade inferred resource; 6.05Mt @ 3.64 g/t gold & 16.16 g/t silver for 707,000 ounces gold & 3.14 Moz silver

» New gold-copper-silver-zinc mineralization discovery at the Montes de Oro target, north of the Cerro Aeropuerto gold-silver deposit.

» 1.4 km x 500 m gold-copper-lead-zinc anomaly open along the northeast.

» Trenching has only partially tested a strong coincident gold-silver-copper-lead-zinc anomaly.

» Recent exploration has significantly extended zonemore than 250 metres to the north

MONTES DE ORO GOLD PROJECT CALIBREMINING.COM 17

Montes de Oro (SIUNA DISTRICT – 100% Calibre)Gold – Silver – Copper - Zinc

2013 NEW GOLD DISCOVERY Trench MNTR13–009

with 52m grading 7.1 g/t Gold

» On-going exploration includes;Ground geophysics, and additional trenching

» First Phase diamond drilling to start in Q2 2015.

» Additional work to be completed advancing Other Targets

MONTES DE ORO (100% Calibre) - SOIL GEOCHEM MAP / TRENCH HIGHLIGHTSMONTES DE ORO GOLD PROJECT CALIBREMINING.COM 18

16.2m @ 4.68 g/t Au

27.5m @ 4.93 g/t Au

33.5m @ 2.10 g/t Au52.3m @ 7.07 g/t Au

8.45m @ 3.42 g/t Au

9.0m @ 3.11 g/t Au

Trench From To length Au

ID (m) (m) (m) (g/t)

MTR13-009 0.0 52.3 52.3 7.07

incl 10.7 52.3 41.6 8.46

incl 10.7 36.9 26.2 12.54

MTR13-017 0.0 27.5 27.5 4.93

incl 14.0 23.0 9.0 10.15

MTR13-018 20.0 29.0 9.0 3.11

MTR13-019 4.8 21.0 16.2 4.68

MTR13-020 29.5 38.0 8.5 1.66

MTR13-022 0.0 6.0 6.0 4.73

MTR13-026 0.0 33.5 33.5 2.10

MONTES DE ORO (100% Calibre) – CURRENT EXPLORATIONMONTES DE ORO GOLD PROJECT CALIBREMINING.COM 19

» Montes de Oro; ground magnetic and Induced Polarization Surveys completed

» Montes de Oro; Phase I Drilling underway April 2015

SIUNA DISTRICT (100% Calibre) – CURRENT EXPLORATIONMONTES DE ORO GOLD PROJECT CALIBREMINING.COM 20

» Montes de Oro; additional trenching underway / Drilling Q2 2015

» Additional Exploration continues On-going on “Look Alike” Targets

ROSITA OPTION FORMER SANTA RITA

COPPER-GOLD MINE (33.56 km2)Optioned to Alder Resources

» Optioned to Alder Resources. Spending C$4.0 million over four years (C$3.5 to date) to earn a 65% stake

» Rosita D concession: 3,356 hectares - 5% of Calibre’s concessions in the Mining Triangle

ROSITA PROJECT CALIBREMINING.COM 21

BambanaSanta Rita

SANTA

RITA

R13

» Historic Santa Rita open pit Cu/Au mine: past production 305 M lbs Cu, 177k ozs Au, and 2.6M ozs Ag from 5.9Mt

» 2012 NI 43-101 Inferred Resource at Santa Rita of;7.95 Mt @ 0.62% Cu, 0.46 g/t Au, and 9.2g/t Ag. with 108 M lbs copper, 118 K oz gold and 2.35 M oz of silver

» High grade copper/gold/silver zone identified at Bambana with 5.21% Cu, 4.40 g/t Au and 144g/t Ag over 12.1 metres

2012 – New Copper/Gold/Silver Resource at Santa Rita

NI 43-101 GOLD/SILVER RESOURCES CERRO AEROPUERTO, LA LUNA & RISCOS 100% CALIBRE OWNED

Calibre Mining Corp. Inferred Resource (using a 0.6 g/t AuEq cutoff grade)

1. *For Cerro Aeropuerto & La Luna Gold Equivalent (Au Eq) calculated using gold price of US$1,058/oz and silver price 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.4. * Subject to Option Agreement with IAMGOLD

NI 43-101 COPPER/GOLD/SILVER RESOURCES AT ROSITAOPTIONED TO ALDER RESOURCESCalibre Mining Corp. and Alder Resources Inferred Resource (using a 0.15% Copper cutoff grade)

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 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.

CALIBRE MINING NI43-101 INFERRED RESOURCES CALIBREMINING.COM 22

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

Riscos de Oro * 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

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 9.2 0.62 118,000 2.35M 108M

Summary» Nicaragua provides a favourable, stable, environment for mining.

» Calibre has Multiple Chances for Success with partnerships with Two Mid-Tier Producers as well as 100% owned Ground

» New gold-skarn discovery at Calibre’s 100% owned Montes de Oro gold project (52.3 m grading 7.1g/t Au MTR13-009); Phase I Drilling start Q2 2015

» IAMGOLD and B2Gold both with Active Exploration Programa. IAMGOLD – Drilling on Eastern Borosi Projectb. B2Gold – Additional work at Minnesota, Primavera

and Santo Thomas.

» Calibre’s partners to spend up to $12M on exploration over 3 years

INFORMATIONRyan King

calibre@calibremining.com

(604) 628 1012

Calibre Mining Corp.

1820-999 West Hastings.

Vancouver, BC V6C2W2

TSX.V: CXB

calibremining.com

Partnered for

Discovery

EXPLORATION TIME LINE & NEWS Flow

Calibre Mining Corp.

1820-999 West Hastings St.

Vancouver, BC V6C 2W2

TSX.V: CXB

calibremining.com