1

“Silver Producer with a Golden Future”

April 2013

www.intlminerals.com

2

Cautionary Statement

Some of the statements contained in this presentation are “forward-looking statements” within the meaning of Canadian securities law requirements. Such forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to differ materially from the anticipated results, performance or achievements expressed or implied by such forward-looking statements.

Forward-looking statements in this presentation include statements regarding drilling and development programs on the Company’s projects, timing of commencement of production, reserve/resource additions, completion of feasibility studies, obtaining of required environmental and production permits, timing and significance of future cash flows and dividends.

Factors that could cause actual results to differ materially from anticipated results include risks and uncertainties such as: risks relating to estimates of mineral resources and reserves; risks relating to project capital, production costs and cash flows; risks relating to obtaining mining and environmental permits; mining and development risks; risk of commodity price fluctuations; political and regulatory risk; general financial market and credit risks; other risks and uncertainties detailed in the IMZ’s Annual Information Form (dated September 28, 2012) and Management Discussion and Analysis for the year ended June 30, 2012, both of which are available at www.sedar.com.

Any forward-looking financial information provided may not be appropriate in relation to reporting under International Financial Reporting Standards (IFRS). Please refer to the Company’s latest financial statements and notes. These forward-looking statements speak only as of the date hereof. The Company undertakes no obligation to update publicly or release any revisions to these forward looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Qualified Person: The Company’s VP Corporate Development, Nick Appleyard.

Dollar and Year References: “$” and “US$” refer to US dollars unless otherwise noted. Years refer to the respective calendar year unless otherwise noted as fiscal year (June 30).

Au = gold; Ag = silver; g/t = grams per metric tonne; M = million; $M = million dollars; Mt = million tonnes; oz or ozs = troy ounces; tpd = metric tonnes per day; Gold-to-Silver ratio for gold equivalent ounces based on 55:1 for production statistics and variable ratio for reserves and resources based on Technical Reports.

3

Focus: Gold and Silver Deposits in the Americas

Pallancata Silver Mine, Peru (40% IMZ, 60% Hochschild)

Estimated Production in 2013: ~8.8 Million Silver Equiv. ozs

Inmaculada Gold-Silver Project, Peru (40% IMZ, 60% Hochschild)

Production Start-up: 2H 2014

Production: ~200,000 Gold Equiv. ozs/year

Nevada (100% IMZ)

Gemfield Gold Project: Start-up mid-2015. ~65,000 ozs/year

Converse Gold Deposit: Project under review

Large Reserve Base: 1.37M Gold Equiv. Proven + Probable ozs

7.9M M + I Resources (includes Reserves)

Ecuador:

Pending sale of assets

Financial Strength: $54M in Cash and Debt Free

Initial Dividend of C$0.12/share (currently ~3.2% yield) paid Jan, 2013

Overview

Pallancata, Peru

Peru 13%

USA 87%

M + I Resources

(Au Equiv. Ozs)

4

Shares Issued: 117.6 million

Fully Diluted Shares: 121.4 million

Options: 3.8M

Recent Share Price: C$3.80

52-Week Range: C$3.37-C$5.81

Capital Structure and Stock Performance

National Bank (C) – S. Parsons

TD Securities (C) – S. Green

Cowen Securities LLC (US) – A. Graf

Bank Vontobel (SW) – P. Rafaisz

Canaccord Genuity (UK) – T. Dudley

Zürcher Kantonalbank (SW) – M. Schreiber

Dundee Securities (C) – Pending new analyst

Analyst Coverage

Listings - Toronto and Swiss: Symbol “IMZ”

Swiss Performance Index (SPI): Top 100

Market Capitalization: C$447 million

(~$440 million)

Cash: $54 million

Current Dividend: ~3.2%

Debt Free

One year relative performance

Weighted in US$

GDJX -36%

GOLD -5%

HUI -30%

IMZ -36%

5

Key Financial Data - Fiscal years end June 30th

10%

5%

0%

Re

turn

on

Eq

uit

y %

% Return on Equity (Cont. Ops; Pre-Tax Basis)

Pre-Tax Net Income from

Continuing Operations

15%

7.2%

US

$M

illio

ns

Pre-Tax Cash Flow from Continuing

And Discontinued Operations

09 11 10 12

20% 20.6%

Note: Effective fiscal year 2012, numbers reflect adoption of IFRS.

13

* annualized

US

$M

illio

ns

$10

$40

$0

-$5

$30

4.0

09 11 10 12

$20

$50

$60

$70

$80

35.9

18.9

39.7

19.3

72.4

$10

$5

$0

-$5

$15

09 11 10 12

$25

56.7

$35

$30

16.2

$45

$20

$50

$55

$60

15.3

Min

e R

oyalt

y

30.4

29.1

9.8%*

$40

8.8% 9.5%

8.7

8.6

13 (year-to-date)

13 (year-to-date)

6

Property Locations

7

Production

Development

Drill Targets

Pallancata

Converse

Gemfield (Est Prodn 2015)

Inmaculada (Est Prodn 2014)

Project Pipeline

Peru

U.S.A. (Nevada)

Del Oro/Rye Acoma

McMahon Ridge/Goldfield Main

Pallancata, Peru

Stonewall Spring

8

Reserves / Resources (Attributable to IMZ)

Notes: 1. Average Au equiv conversion of 61:1 Ag to Au ratio for reserves and 62:1 for resources.

2. P+P = Proven and Probable Reserves

3. M+I = Measured and Indicated Resources

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

M+I Resources (83%)

(Total 7.88M ozs Au Eq)1,3

P+P Reserves

(Total 1.37M ozs Au Eq)1,2

Inferred Resources (17%)

(Total 1.73M ozs Au Eq)1

5.5

Go

ld E

qu

iva

len

t O

un

ce

s (

Millio

ns

) 6.0

10

5

0

Go

ld E

qu

iv

(Mil

lio

n O

zs

)

08 10 07 09 Total M+I Gold Equiv Resources

11 12 Go

ldfi

eld

(10

0%

)

Co

nve

rse

(10

0%

)

USA

Peru 13%

USA 87%

M + I Resources

(Au Equiv. Ozs)

Goldfield, Nevada

Pa

lla

nca

ta (

40

%)

Inm

ac

ula

da (

40

%)

Peru

9

Major Project Summaries – Attributable to IMZ (Basis P+P Reserves Only)

Pallancata

(40%)

Inmaculada

(40%)

Gemfield

(100%)

Location Peru Peru Nevada

Metals Ag + Au Au + Ag Au

Type of Operation Underground Underground Open Pit

Status Production Development Development

Production Date N/A 2H 2014 Mid 2015

Estimated Average

Annual Production

3.0M ozs Ag

10,400 ozs Au

50,000 ozs Au

I.7M ozs Ag

66,000 ozs Au

Estimated Mine Life (1) 3.5 years 6.5 years 7.0 years

Initial Capital Costs N/A $112M $133M

Total Cash Costs/oz (2) $11-12/oz Ag $260-265/oz Au $600-650/oz Au

All-in Mine Costs/oz (3) $14-17/oz Ag $680-710/oz Au $645-665/oz Au

Economic Parameters (4)

at $1,500 Au, $25 Ag:

• P+P Cash Flow $80-100M $335M $229M

• NPV @ 8% Disc. Rate $70-80M $188M $110M

• IRR --- 55% 29%

(1) Mine life based on current P+P reserves only; does not include current resources.

(2) Total Cash Costs/oz per the Gold Institute definition (based on by-product credit). See Appendix and Footnotes, slide 27.

(3) All-in Mine Costs/oz are calculated using Total Cash Costs plus sustaining capital, mine development , exploration costs, workers’

profit sharing and project-specific interest expense (based on by-product credit).

(4) All amounts are pre-tax and for life of mine based on P+P reserves

10

Pallancata Silver Mine (40% IMZ), Peru

Suyamarca River

Ranichico

Mercedes

Camp

Pallancata- Plan View

Central Zone

(35% 2013 prodn.)

View of Photograph

Pallancata West

(37% 2013 prodn.)

Rina

Pallancata East

(9% 2013 prodn.)

19% 2013 prodn.

Pallancata76M oz M+I Ag Eq

(160 sq km)

Central Area(370 sq km)

Selene

Inmaculada1.5M oz M+I Au Eq

(210 sq km)

10 km

100% Hoch

60% Hoch40% IMZ}

District Map (750 sq km)

Pallancata West

Central

Zone

Main

Structure

To Mariana/

Mercedes/

San Javier

(Looking Northwest)

11

Pallancata Mine, Peru (40% IMZ)

Mine • Underground, 3,000 tpd

• Flotation circuit (concentrate)

• Recoveries: 83% Ag, 70% Au

Reserves (1) • Total: 3.3 Mt at 1.3 g/t Au & 273 g/t Ag - Proven: 2.2 Mt at 1.3 g/t Au & 276 g/t Ag

- Probable: 1.1 Mt at 1.3 g/t Au & 269 g/t Ag

Mine Life • ~3.5 years (P+P only. Does not include resources)

2012 2013E

Ore production (tonnes) 1,070,500 t 1,050,000 t

Head grade Ag/Au 256 g/t /1.1 g/t 261 g/t / 1.1 g/t

Production Ag/Au (oz) 7.44M oz Ag

26,000 oz Au

7.4M oz Ag

26,000 oz Au

Direct Site Costs/oz Ag (net of

Au credit) (2)

$5.14

$6.70-7.00E(3)

IMZ Total Cash Costs/oz Ag

(net of Au credit) (2)

$9.16 $13.00-14.00E(3)

IMZ All-in Mine Costs/oz Ag

(net of Au credit) (3)

$20.90 $21.00 – 23.00E(3)

2013 Est. Operating Cash Flow to IMZ

Ag Price / Ounce

$55

$28 $30 $32 $34 $36 $38

$45

$35

$ 25

Millio

ns

$40

$65

$48

$42

$31

$25

$60

Post-Capex/Pre-Tax

2013E 2009 2010

100% Production (40% to IMZ)

7.4

26

8.4

32

10.1

36

2011

8.8

34

2012

26

7.4

Gold (,000 ozs) Silver (M ozs)

$54

$37

1) Basis Hochschild’s Dec 31, 2012 reserve and resource estimates.

2) Direct Site Costs and Total Cash Costs per Gold Institute definition.

3) All-in Mine Costs are calculated using Total Cash Costs plus sustaining capital, mine development,

exploration costs, workers’ profit sharing and project-specific interest expense. All based on by-

product credit.

4) Assumes $30/oz Ag and $1,600/oz Au.

12

0 0.5 1.0

Kilometers

Angela Vein

Tensional Lourdes

Cymoid

Angela SW

Plan View – Multiple Veins near to Angela Vein*

Inmaculada

Further potential along Angela Vein (Long Section looking Northwest)*

Inmaculada Project, Peru (40% IMZ) – Angela Vein

*Source: Hochschild Mining Plc

Vein Outcrop

Approximate Eastern

Limit of Feasibility Study

Development adit for Angela Vein

13

Inmaculada, Peru - IMZ 40% - January 2012 Feasibility Study

Operation • Underground, 3,500 tpd

• Conventional cyanidation (dore)

• Recovery: 96% Au, 91% Ag

• 6.5 year mine life (basis initial reserves only)

Reserves • Total: 845,000 oz Au; 30.1M oz Ag

7.8 Mt at 3.4 g/t Au & 120 g/t Ag - Proven: 3.8 Mt at 3.4 g/t Au & 106 g/t Ag

- Probable: 4.0 Mt at 3.3 g/t Au & 134 g/t Ag

Production

Estimate and Costs • Average/year: 124,000 oz Au, 4.2M oz Ag

• Direct Cash Costs/oz: ~$135 (net of Ag credit)

• IMZ Total Cash Costs/oz: ~$265 (net of Ag credit)

• IMZ All-in Mine Costs/oz: ~$700 (net of Ag credit)

Initial Capital • $315M: Jan 2012 Feasibility Study

• $370M: Nov 2012

• Debt financing of $140M in March 2013

• 7year term, Libor +300 bps

• Interest only payable in first 2 years

Feasibility Study

Base Case

Economics

$1,100 Au, $18 Ag

• NPV0%: $323M ($194M after-tax)

• NPV5%: $181M ($90M after-tax)

• IRR: 18% (12% after-tax)

Feasibility Study

Sensitivity

$1,500 Au, $25 Ag

• NPV0%: $821M ($492M after-tax)

• NPV5%: $551M ($313M after-tax)

• IRR: 38% (27% after-tax)

Outlook • Permitting ongoing, decline underway

• Estimated production date : 2H 2014

Production Estimates

(100% Basis)

35

1.0

136

121

4.3

5.0 108 5.0

2014 (3 months)

2015 2016 2017

Gold (,000 ozs) Silver (M ozs)

2015 Est. Pre-tax Operating Cash Flow to IMZ

Au Price / Ounce

$1000 $1200 $1400 $1600 $1800

$100

$75

$50

$ 25

Millio

ns

$125

$2000

$129

$112

$44

$61

$78

$95

$2200

$150

100% Basis (unless shown otherwise)

$146

14

Goldfield, Nevada - IMZ 100% - Development Stage

Three Gold Deposits (Gemfield, McMahon Ridge, Goldfield Main)

P+P Reserves*: 0.51M oz Au (14.3 Mt at 1.1 g/t Au)

• Proven: 11.0 Mt at 1.2 g/t Au

• Probable: 3.2 Mt at 0.9 g/t Au

M+I Resources: 1.23M oz Au (31.1 Mt at 1.2 g/t Au)

• Measured: 12.2 Mt at 1.1 g/t Au

• Indicated: 18.9 Mt at 1.3 g/t Au

Inferred Resources: 0.44M oz Au (10.9 Mt at 1.3 g/t Au)

Targeting Heap Leach Prodn in Mid 2015 (Gemfield only)

Basic engineering to be completed by Q2 2013

66,000 Au ozs/year, 6,000 tpd open-pit heap leach operation

• Possible 7,500 tpd scenario with 14% lower processing costs and G & A

Capex estimate: $133M (Plant/Infrastructure $93M, Mine $20M, Road $20M)

Total Cash Costs: $600-650/oz Au; All-in Mine costs: $645-665/oz Au

New mine plan and updated resources and reserves in Q2 2013

Testing new drill targets outside of existing mineralized areas

* Gemfield deposit P+P Reserves included in M+I Resources.

15

Reno - 4.5 hours

Las Vegas - 2.5 hours

Goldfield, Nevada – Principal Gold Deposits

X-section

16

Goldfield, Nevada: Gemfield Deposit Feasibility Study July 2012

Operation • Open Pit, 6,000 tpd (possible 7,500 tpd (1))

• Heap leach (dore)

• Recovery: 84% Au

• 7 year mine life (basis initial reserves)

• Strip ratio: 2:1

P&P Reserves (2)

$1,350/oz Au

• Total: 511,000 oz Au (14.3 Mt at 1.1 g/t Au) - Proven: 11.0 Mt at 1.2 g/t Au

- Probable: 3.2 Mt at 0.9 g/t Au

M&I Resources (2)

(includes reserves)

• Total: 574,000 oz Au (17.0 Mt at 1.0 g/t Au) - Measured: 12.2 Mt at 1.1 g/t Au

- Indicated: 4.8 Mt at 0.9 g/t Au

Production

Estimates

• Average/year: 66,000 oz Au

• Direct Cash Costs/oz: $525-600

• Total Cash Costs/oz: $600-650

• All-in Mine Costs/oz: $645-665

Initial Capital

• $133 million

Base Case

Economics $1,350 Au

• NPV0%: ~$168M ($132M after-tax)

• NPV7%: $ 83M ($59M after-tax)

• IRR: 22% (18% after-tax)

Outlook • Basic engineering close to completion

• Plan of Operations to be submitted in April

• Production Date Estimate: Mid 2015

Production Estimates

40

83 75

2015 Est. Pre-tax Operating Cash Flow (3)

Au Price / Ounce

$1000 $1400 $1800

2015 (6 months)

2016 2017

Gold (,000ozs)

$40

$30

$20

$ 10

Millio

ns

$50

$2200

$68

$52

$20

$36

(1) See November 1, 2012 press release on Gemfield update.

(2) Silver is not material.

(3) Production and pre-tax operating cash flow on operating year basis.

$70

$60

See appendix for details of July 2012 Feasibility Study.

$1200 $1600 $2000

$28

$44

$60

75

2018

17

Converse, Nevada – Location Map and Project Summary

Trout Creek

Trenton Valmy

Trenton North Peak

Phoenix

Fortitude

80

4 4 9 0 0 0 0 N

4

5 0 0 0 0 0 N

4

5 2 0 0 0 0 N

490000E 470000E

Humboldt County

Lander County

Humboldt County

Pershing County

Converse IMZ MARIGOLD MINE

VALMY

Trenton Canyon Main

NEWMONT COPPER BASIN AREA

BUFFALO VALLEY MINE

NEWMONT COPPER CANYON AREA

LONE TREE MINE

480000E

80

Gold Mine, deposit

IMZ- fee land

IMZ- BLM land

N

GOLDCORP/BARRICK

45

10

00

0N

NEWMONT

NEWMONT

0 1 2 3

Miles

TRENTON CANYON MINE NEWMONT

Measured and Indicated resources:

• Total: 5.2M ozs Au (320 Mt at 0.5 g/t Au, 3.7 g/t Ag)

- Measured: 221 Mt at 0.5g/t Au, 3.9 g/t Ag

- Indicated: 99 Mt at 0.5 g/t Au, 3.2 g/t Ag

Inferred resources: 0.5M ozs Au

Total drilling to date ~76,000 meters

2011 scoping study details:

• 45,000 tpd heap leach scenario

• Average annual Au production 160,000 ozs

• Mine life ~13.5 years

• Direct cash cost (net of Ag credit) ~$750/oz

• Total cash cost (net of Ag credit) ~$1,000/oz

• Capital cost ~$455M

• NPV @ 8% $1,200 Au: $70M

• NPV @ 8% $1,600 Au: $440M

Project under review

Converse, Nevada

18

5 Year Estimates: Project Time Lines

Pallancata, Peru

Inmaculada, Peru

Goldfield, Nevada(1)

Converse, Nevada

2013 2014 2015 2016

Q1 Q2 Q3

Under Review

Permit / Construction

Permit / Construction

Production

Production

2017

Production

(1) Goldfield: Heap leach scenario for Gemfield deposit only.

Pallancata, Peru

Goldfield, Nevada

19

4 Year Estimates: IMZ Production and Costs 2012-2016

80,000

60,000

2016E

2012E

2013E

2014E

Go

ld E

qu

iva

len

t O

un

ce

s*

100,000

Notes:

1. Goldfield: Basis July 2012 Feasibility Study.

2. Inmaculada: Basis Jan 2012 Feasibility Study, with IMZ updates.

3. Pallancata: Basis Dec 31, 2012 reserve and resource estimates.

4. Total Cash Costs and Total Production Costs are per the Gold

Institute definition (see Appendix and Footnotes, slide 27).

5. All-in Mine Costs are a non Gold Institute definition and comprise

Total Cash Costs plus sustaining capital, mine development,

exploration costs, workers’ profit sharing and project-specific

interest expense (based on by-product credit).

120,000

140,000

160,000

180,000

Pallancata (40% IMZ)(3)

Total Cash Costs(4)

Goldfield (100% IMZ)(1)

Total Production Costs(4)

Inmaculada (40% IMZ)(2)

200,000

240,000

220,000

2015E

$1000

$800

$600 C

ost / oz

$1200

260,000

280,000

300,000

320,000

$1300

$400

* Gold Equiv ozs based on average 55:1 silver-gold ratio

** Industry-average costs basis GFMS Gold Survey 2012 updated Sept 2012 – figures are 1H 2012 average (excludes exploration costs).

$1100

$900

$700

$500

All-in Mine Costs(5)

Industry-Avg Total Prodn Costs**

1H 2012 ($930)

Industry-Avg Total Cash Costs**

1H 2012 ($727)

20

4 Year Estimates: Pre-tax Cash Flow from Ops + Possible Equity Financing

$0

2013E

2014E

2015E

$200

$100

$1,000 gold

$1,500 gold

$1,800 gold

1.1. Goldfield: Basis July 2012 Feasibility Study.

2.2. Inmaculada: Basis Jan 2012 Feasibility Study, with IMZ updates (IMZ 40%).

3.3. Pallancata: Basis Dec 31, 2012 reserve and resource estimates.

4. 2012 does not include $38M from sale of Ruby Hill royalty.

5. Estimates based on Au equivalent ozs at Ag:Au ratio of 55:1.

$300

Goldfield (100% IMZ)

Pallancata (40% IMZ)

Inmaculada (40% IMZ)

2016E

$ 0

$200

$100

$300

$1000 Au

$1,500 Au

$1,800 Au

Inmaculada, Peru

2012E

Angela Vein

Outcrop

Possible $50M

Equity Raise

21

4 Year Estimates: Total Costs Attributable to IMZ

(1) All-in Mine Costs are defined in Appendix and Footnotes, slide 27.

(2) Goldfield: Basis July 2012 Feasibility Study. Initial capex of $133M reduced by $75M of debt financing in 2014.

(3) Inmaculada: Basis Jan 2012 Feasibility Study. Updated capex in Nov 2012. IMZ $112M share of initial capex estimate

reduced by $56M of debt financing in 2013 as part of $140M project debt financing.

(4) Pallancata: Basis Dec. 31, 2012 reserve and resource estimates.

(5) Corporate costs include dividend payments.

$60

$100

$0

$80

$40

$120

$20

$140

2012E 2013E 2014E 2015E 2016E

$60

$100

$ 0

$80

$40

$120

$20

$140

Goldfield, Nevada

74 80

102

27 29 27

42

59

107

118

Goldfield(2)

Inmaculada(3)

Pallancata(4)

Explorn + Corp costs(5)

Projects (All-in Mine Costs(1))

Debt Repayment

+ Interest

Other Costs

22

4 Year Estimates: Cum. Op. Cash Flow + Equity Financing vs Spending

$200

2012E 2013E(1) 2014E(2) 2015E

$ 0

2016E

$600

$400

$800

$1,000

Cum. Spending

Cum. Op. Cash. Flow +

Equity Financing

@ $1,500 Au

$200

$ 0

$600

$400

$800

$1,000

Cum. Op. Cash Flow +

Equity Financing

@ $1,000 Au

(1) Includes $140M debt financing in 2013 at Inmaculada (40% ($56M) attributable to IMZ).

(2) Assumes $75M of debt financing and $50M of equity financing for Goldfield in 2014.

(3) Estimates based on Au equivalent ozs at Ag:Au ratio of 55:1.

Cum. Op. Cash Flow +

Equity Financing

@ $1,800 Au

23

Kir

kla

nd

Lak

e

Ala

mo

s

B2G

old

Au

ric

o

Lak

e S

ho

re

S

an

Go

ld

Tim

min

s

Ala

ce

r

Se

ma

fo

Arg

on

au

t

IMZ

GO

LD

CO

RP

BA

RR

ICK

AG

NIC

O

Enterprise Value Gold Resource Ounces (M+I only)

$200

$100

$50

EV

US

$/G

old

Re

so

urc

e O

zs

$250

$300

$350

$400

Source: -Company Disclosure, Bloomberg as of April 5, 2013. Based on most recent financials.

- Enterprise Value = market capitalization plus debt less cash.

16

14

12

10

8

6

M +

I (o

zs

)

18

2

20

$56 4

$150

$67

AN

GL

OG

OL

D

Go

lden

Sta

r

$75 $74

M + I Resource ozs

$56 $62

Au

rizo

n

$97

$172

$249

$269

$81 $70

$166 $144

$170

$199

160 220 28 93

$137

24

IMZ - The Investment Case

Growing Production and Cash Flow

Pallancata (IMZ’s 40% interest)

• 2013: ~3.5M oz Ag Equiv. (64,000 oz Au Equiv)

~$20-25M free cash flow

Inmaculada (IMZ’s 40% interest)

• Production date: 2H 2014

• 80,000 oz/year Au Equiv (Avg LOM estimate)

• 2015 free cash flow: $60-65M (1)

Growth from Nevada Project (IMZ 100%)

Production at Gemfield - mid 2015

• 2016 free cash flow: $25-30M (1)

“Call Option” on 5M M+I Au ozs at Converse

Maintain Active Exploration Program

Nevada: Goldfield, Del Oro/Rye, Stonewall Spring

Peru: Acoma

Strong Balance Sheet

$54M in cash and debt-free

C$0.12/share annual dividend (~3.2% current yield)

Camp at Inmaculada, Peru

Development Adit, Inmaculada, Peru

(1) Assumes $1,600 Au, $30 Ag

25

News Flow/Catalysts in 2013

Fiscal Q3 Financial Results: - Q2 2013

Nevada, USA:

Goldfield:

- Resource, mine plan and capital cost update - Q2 2013

Stonewall Spring and Del Oro/Rye:

- Commence drilling - Q2 2013

Peru:

Inmaculada project update - Q2 2013

Acoma – commence drilling - Q2 2013

Ecuador:

Sale of projects - H1 2013

26

Contact Information

Website: www.intlminerals.com

Email: information@intlminerals.com

Investor Relations

• Paul Durham

VP - Corporate Relations

Office phone: +1 (203) 883 8359

Cell Phone: +1 (203) 940 2538

Email: pdurham@intlminerals.com

• Christine Stewart

Renmark Financial (Canada)

Toronto Office: +1 (416) 644 2020

Montreal Office: +1 (514) 939 3989

Email: cstewart@renmarkfinancial.com

Headquarters (U.S.A.)

• Scottsdale, Arizona: +1 (480) 483 9932

Fax: +1 (480) 483 9926

Email: information@intlminerals.com

• Oliver Holzer

Marketing Consultant (Europe)

Swiss office: +41 44 853 00 47

Mobile: +41 79 402 39 33

Email: oholzer@intlminerals.com

27

APPENDIX & FOOTNOTES

1. See slides attached for the details of Pallancata and Inmaculada reserve/resource estimates. Please refer to the

Company’s NI 43-101 reports and related news releases filed on SEDAR for a discussion of assumptions,

parameters and material risk factors. Estimated mineral resources that are not mineral reserves do not have

demonstrated economic viability.

2. The Inmaculada feasibility study information and reserve and resource estimates were announced in a news

release dated January 11, 2012. A Technical Report on Inmaculada was filed by the Company on SEDAR on

February 24, 2012.

3. The Goldfield feasibility study information and reserve and resource estimates were announced in a news release

dated July 17, 2012. A Technical Report on Inmaculada was filed by the Company on SEDAR on August 31, 2012.

4. The Goldfield Main resource estimate is classified in accordance with CIM guidelines by independent consultant R.

Mohan Srivastava, a Qualified Person under NI 43-101 and has an effective date of February 1, 2011.

5. IMZ uses the Gold Institute’s definitions for costs per ounce:

Direct Site Costs per ounce: direct mining costs; processing; mined ore inventory adjustment; mine G&A

costs; and by-product credits.

Total Cash Costs per ounce: Direct Site Costs plus: management fees; product transportation, smelting and

refining costs; and taxes (other than federal income tax).

Total Production Costs per ounce: Total Cash Costs plus: depreciation and amortization. Reclamation costs

are not included by IMZ.

6. IMZ also uses a non Gold Institute definition for costs per ounce:

All-in Mine Costs per ounce: Calculated using the Gold Institute’s Total Cash Costs per ounce using by-

product credits plus sustaining capital, mine development, exploration costs, workers’ profit sharing and

project-specific interest rate.

7. IMZ accounts for its 40% ownership of the Pallancata Mine and the Inmaculada project on an equity accounting

basis.

28

Pallancata - December 31, 2012 Reserves & Resources

Notes: 1. Gold and Silver Eq. values based on 51:1 Ag/Au ratio, determined by using a combination of metal prices, metallurgical recoveries and cost of sales.

2. Measured and Indicated Resources include Proven and Probable Reserves. CIM definitions were complied with for mineral resources and reserves.

3. Cut-off grade of 128 g/t silver equivalent.

4. Resource and reserve estimates have an effective date of December 31, 2012.

5. Numbers have been rounded in all categories to reflect the precision of the estimates.

6. Hochschild’s data and methodology were reviewed by IMZ’s VP of Corporate Development, Nick Appleyard and VP Special Projects, Alan Matthews,

both Qualified Persons as defined by National Instrument 43-101.

100% Basis (40% Attributable to IMZ)

Basis $1,200 gold, $20.00 silver

Reserves Million

Tonnes

Silver

(g/t)

Gold

(g/t)

Silver

(oz)

Gold

(oz)

Silver

Equiv (1)

(ozs)

Gold

Equiv(1)

(ozs)

Proven 2.22 276 1.3 19,683,000 94,000 24.4M 483,000

Probable 1.05 269 1.3 9,090,000 43,000 11.3M 222,000

Proven &

Probable

3.27 273 1.3 28,773,000 137,000 35.7M 705,000

Resources

Measured 3.31 358 1.7 38,045,000 179,000 47.1M 930,000

Indicated 1.19 338 1.6 12,955,000 61,000 16.0M 315,019

Measured &

Indicated (2)

4.50 352 1.7 51,000,000 240,000 63.2M 1,247,000

Inferred

Resources 3.34 338 1.4 36,191,000 151,000 43.8M 866,000

29

Pallancata Longitudinal Section - Looking Northeast

"

!

DDH OROVEGA

DDH HOC . ejecutado

DDH Programa 2010

DDH Programa 2011

SYMBOLS LITHOLOGIES

T. And. - Pómez

T. And. - Lapilli

L. And.Porf.

T. And.- Lit..

L. And.Afan. Domo / Flujo

Rhyodacite

Hipabisal

Diorite

! "Measured Resources

Indicated Resources

Inferred Resources

RESOURCES

EXTREMO

SUR ESTE

Domo Sarnahuiri

3,000

3,400

3,800

4,200

4,400

4,600

4,800

4,000

3,600

3,200

HUARARANI

NW PALLANCATA

SOUTHEAST PALLANCATA

CENTRAL

PALLANCATA

WEST PALLANCATA

EAST

EXTREME

SOUTHEAST

PALLANCATA

WEST = Areas Currently in Production

1,300m 5,000m

PALLANCATA

SOUTHEAST = Areas in Development

A A’

30

Inmaculada, Peru - Reserves & Resources- January 2012

1. Numbers are rounded to reflect the precision of a resource estimate.

2. Measured and Indicated Resources include Proven and Probable Reserves.

3. Cut-off grade for estimated Reserves is 2.3 g/t gold equivalent. Cut-off grade for estimated Resources is 1.5 g/t gold equivalent. Gold equivalent ounces are

estimated for mineral resources using a 60:1 silver to gold ratio.

4. The estimated mineral resources that are not mineral reserves do not have demonstrated economic viability.

5. The mineral resources were estimated using the Canadian Institute of Mining, Metallurgy and Petroleum (CIM),Standards on Mineral Resources and Reserves,

Definitions and Guidelines prepared by the CIM Standing Committee on Reserve Definitions and adopted by the CIM Council December 11, 2005.

6. The reserve and resource estimates have an effective date of January 11, 2012.

Reserves Million

Tonnes

Gold

(g/t)

Silver

(g/t)

Gold

(oz)

Silver

(oz)

Gold Equiv

(oz)

Proven 3.84 3.4 106 421,000 13,125,000 640,000

Probable 3.96 3.3 134 424,000 17,796,000 707,000

Proven & Probable 7.80 3.4 120 845,000 30,140,000 1,347,000

Resources

Measured 3.28 4.1 128 430,000 13,500,000 655,000

Indicated 3.78 4.1 159 490,000 19,300,000 812,000

Measured & Indicated (2) 7.07 4.1 144 930,000 32,800,000 1,477,000

Inferred Resources 4.94 3.9 152 620,000 24,200,000 1,023,000

100% Project Basis, 40% Attributable to IMZ Base-Case: $1,100 Gold, $18.00 Silver

31

Inmaculada - Multiple Targets

21,000 ha. property

Inmaculada

Angela Vein

Angela Vein

Outcrop

32

10

10

50

50

100 10

50

4600 m

50

50

10

10

SW NE

4200 m

25

10

25

50

10

10

25

25

50

100

50

139

10

25

100

10

100

50

100

50

10

00

0

100

25

100

100

25

25

25

100

10

05

0

10

10

0

10

15

0

10

20

0

10

25

0

10

30

0

10

35

0

10

40

0

10

45

0

10

50

0

10

55

0

10

60

0

10

65

0

10

70

0

10

75

0

10

80

0

10

85

0

10

90

0

11

40

0

11

00

0

11

45

0

11

10

0

11

20

0

11

30

0

11

50

0

11

60

0

11

70

0

11

80

0

11

90

0

12

00

0

Meters

50 100 0 200

o

o

o

o

o

o

Surface

Grade-Thickness Contours: Au Equivalent (g/t) x true width (m)

Drill Holes with

No Significant Values

Drill Hole Mineralized Intercepts

25 50

10

100

o

Eastern Limit of Feasibility Study

Inmaculada - Angela Vein - Long Section (Looking Northwest)

4300 m

4400 m

4500 m

Inmaculada

Vein Outcrop

21,000 Hectares (210 sq km) - 60 km SW of Pallancata

Low-Sulfidation Epithermal Vein System

Over 2 km in Strike Length and 300m Vertical Extent

Open East and West and One of Multiple Veins on Property

99% of Known Mineralization Not Exposed on Surface

33

Inmaculada, Peru (40% IMZ, 60% HOC) – Jan. 2012 Feasibility Study Results

Item Units 100% Project IMZ 40%

Base Case gold price $ per ounce $1100 $1100

Base Case silver Price $ per ounce $18 $18

Initial Mine life years 6.3 6.3

Expected Production Date date Dec. 2013 Dec. 2013

Average annual gold production ounces/year 124,000 49,600

Average annual silver production ounces/year 4,204,000 1,682,000

Average annual gold equiv. production4 ounces/year 194,000 78,000

Life-of-mine gold production ounces 783,000 313,000

Life-of-mine silver production ounces 26,488,000 10,600,000

Life-of-mine gold equiv. production 4 ounces 1,220,000 488,000

Plant processing rate (3,500 tpd) tonnes/year 1,260,000 1,260,000

Metallurgical recovery – gold % 95.6% 95.6%

Metallurgical recovery – silver % 90.6% 90.6%

Initial capital 2 $ millions $315 $91

Direct site costs 3 per tonne processed $74 $74

Direct site costs3,5 per ounce Au (with Ag credit) $133 $133

Total cash operating costs3,5 per ounce Au (with Ag credit) $172 $262

IRR pre-tax/post-tax % 18% / 12% 26% / 21%

Pre-tax /post-tax cash flow (non-

discounted)

$ millions $323 / $194 $136 / $95

Pre-tax/post-tax NPV, 5% discount rate $ millions $181 / $90 $85 / $57

Pre-tax/post-tax NPV, 8% discount rate $ millions $120 / $46 $63 / $40

1. IMZ owns a 40% interest in the Inmaculada project. Under the joint venture agreement signed between IMZ and Hochschild, in December

2010, Hochschild must contribute the first $100 million of feasibility study, project development and capital costs with subsequent costs

funded 60% by Hochschild and 40% by IMZ. Hochschild will receive a 7% management fee as operator of Inmaculada.

2. Initial capital includes $25 million in contingency allowance and is based on Q4 2011 estimates. No escalation factors have been applied.

3. Direct site costs include mining, processing and mine administration. Total cash operating costs include direct site costs plus estimates of

refining charges and government royalty (but do not include workers profit sharing which is 8% of net income). IMZ costs also include

estimate of management fee.

4. Gold equivalent (“gold equiv.”) numbers are estimated using a silver-to-gold ratio of 60:1 calculated by using the ratio of the base case

metal prices.

5. By-product accounting is in accordance with the Gold Institute definition.

34

Inmaculada, Peru - Sensitivity to Gold & Silver Prices

Gold Price / Silver Price ($/oz)

BASE CASE

Category

$900 /

$15.00

$1,100 /

$18.00

$1,300 /

$21.00

$1,500 /

$25.00

$1,700 /

$28.00

$1,900 /

$31.00

IRR 5% / 9% 18% / 26% 28% / 40% 38% / 55% 46% / 67% 53% / 78%

Cash Flow

($ millions)

$88 / $42 $323 / $136 $559 / $231 $821 / $335 $1,057 / $429 $1,292 / $523

NPV 5%

($ millions)

$6 / $15 $181 / $85 $356 / $155 $551 / $233 $726 / $302 $901 / $372

NPV 8%

($ millions)

-$28 / $3 $120 / $63 $268 / $122 $433 / $188 $581 / $247 $729 / $306

Pre-tax Sensitivity Analyses 100% Project Basis v 40% Attributable to IMZ

(base-case in bold)

NOTE: $181 / $85 = 100% Project Basis / 40% Attributable to IMZ

35

Value Added by Acquisition of Ventura Gold

Ventura Gold Acquisition 2010 (for Inmaculada)

US$

Original Purchase Price 13.7M shares (± $60M)

Acquisition cost, net of sale of 11% interest to HOC $ 0.4M

Exploration spending by IMZ $12.1M

Total IMZ investment $12.5M

Total Au Equiv. M + I ozs (IMZ 40% share) 0.59M*

*excludes 0.41 M Inferred ozs

Cost Per Ounce (Au Equiv.) US$

Acquisition cost per ounce $ 0.68/oz

Development cost per ounce $20.51/oz

Total cost per ounce Au $21.19/oz

Tangible Results to Date

Inmaculada under construction

Reduced IMZ initial capital obligations

Significant resource expansion potential

36

Milltown

Gemfield

Principal

Gold Deposit

Other Targets

Goldfield Main: 421,000 oz

Gemfield: 574,000 oz

McMahon Ridge: 238,000 oz

Gold Resources:1.2M M+I ozs

Goldfield, Nevada – Principal Target Areas

Main Goldfield

Reno - 4.5 hours

Las Vegas - 2.5 hours

McMahon

Ridge

Gemfield

Midnight

Belmont

NE

Goldfield

Tognoni

Tom

Keane

Central

Zone

Milltown

Mineral

Wealth

Sinter

Simerone

Es

me

rald

a C

ou

nty

Nye

Co

un

ty

Miles

0 0.5 1.0 1.5

37

Goldfield, Nevada - Mineral Resources - February 2011

Deposit Resources Tonnes Gold

(g/t)

Contained

Gold (oz)

Gemfield

(cut-off 0.3 g/t

gold)

Measured 12,182,000 1.1 438,000

Indicated 4,852,000 0.9 136,000

M & I 17,034,000 1.0 574,000

Inferred 4,173,000 0.6 74,000

Proven 11,041,000 1.2 412,000

Probable 3,246,000 0.9 99,000

P & P 14,287,000 1.1 511,000

McMahon

Ridge (cut-off

0.4 g/t gold)

Measured -------- ----- ---------

Indicated 5,514,000 1.3 238,000

M & I 5,514,000 1.3 238,000

Inferred 108,000 1.1 4,000

Goldfield

Main (cut-off 0.4

g/t gold)

Measured -------- ----- ---------

Indicated 8,549,000 1.5 421,000

M & I 8,549,000 1.5 421,000

Inferred 6,591,000 1.7 360,000

Total

Goldfield

(see cut-off

grades above)

Measured 12,182,000 1.1 438,000

Indicated 18,915,000 1.3 795,000

M & I 31,097,000 1.2 1,233,000

Inferred 10,872,000 1.3 438,000

Proven 11,041,000 1.2 412,000

Probable 3,246,000 0.9 99,000

P & P 14,287,000 1.1 511,000

*Goldfield Main resource estimate is classified in accordance with CIM guidelines by independent consultant R. Mohan Srivastava, a Qualified Person under NI 43-101 and has an

effective date of February 1, 2011. Gemfield reserve estimate was prepared by D. Anderson of Micon International Ltd (July 2012). Gemfield and McMahon Ridge resource

estimates were calculated by R. Mohan Srivastava with an effective date of July 17, 2012.

38

Goldfield, Nevada - Gemfield Deposit: Feasibility Study Results- July 2012

Item Units 100% Project

Base Case gold price $ per ounce $1,350

Initial Mine life years 6.5

Average annual gold production ounces/year 66,000

Life-of-mine gold production ounces 430,000

Plant processing rate (6,000 tpd) tonnes/year 2,190,000

Average Metallurgical recovery – gold % 84%

Initial capital cost 1 $ millions $133

Sustaining capital cost $ millions $16

Direct site costs 2 per tonne processed $15.67

Cash operating costs (with Ag credit) 2,4 per ounce Au $526

Total cash operating costs (with Ag credit) 2,4 per ounce Au $611

IRR pre-tax/post-tax 3 % 22% / 18%

Pre-tax /post-tax cash flow (non-discounted) 3 $ millions $168 / $132

Pre-tax/post-tax NPV, 5% discount rate 3 $ millions $102 / $75

Pre-tax/post-tax NPV, 7% discount rate 3 $ millions $83 / $59

1) Initial capital of $133M includes $20M in contingency allowance and is based on Q2 2012 estimates. No escalation factors have

been applied. Capital breakdown: Plant and Infrastructure $93M, Road $20M, Mine $20M.

2) Direct site operating costs include mining, processing and G&A costs. Cash operating costs include direct site costs plus

estimates of transport and refining charges, net the silver credit. Total cash costs include cash operating costs plus a 5% NSR

royalty and the Nevada Net Proceeds on Minerals tax. Direct site operating costs per tonne of ore comprise processing $6.36,

mining $6.39 and G&A $2.92.

3) Cash flow and NPV estimates all include a 5% Net Smelter Return (“NSR”) royalty due to a third party.

4) By-product accounting is in accordance with the Gold Institute definition.

39

Goldfield, Nevada – Gemfield Deposit: Sensitivity to Gold Price

Pre-tax Sensitivity Analyses

Note: Based on feasibility study at 6,000 tpd.

40

Goldfield, Nevada - Gemfield Deposit - Cross Section

Cross Section 47,000N (Looking North)

41

IMZ – Value Added by Acquisition of Metallic Ventures

Metallic Ventures Purchase 2010 (for Goldfield & Converse)

US$

Original purchase price 8.5M shares + $24M cash (± $60M)

Acquisition cost, net of cash in Metallic $51.5M

Cash received from royalty - $47.8M

Net cost to IMZ $ 3.7M

Exploration spending by IMZ to date +$31.3M

Total IMZ investment $35.0M

Total Au Equiv. M + I ozs 6.79M*

(*excludes 0.98 M Inferred Au Equiv. ozs)

Cost Per Ounce (Au equiv.) US$

Acquisition cost per ounce $0.54/oz

Development cost per ounce $4.61/oz

Total cost per ounce Au $5.15/oz

Tangible Results to Date

One project (Gemfield) in development

Significant resource expansion potential

42

Converse, Nevada - Mineral Resources - December 2011

Resources Tonnes Gold

(g/t)

Silver

(g/t)

Gold

(oz)

Silver

(oz)

Gold Equiv.

(oz)

Measured 221,172,000 0.51 3.9 3,590,000 27,828,000 3,868,000

Indicated 99,057,000 0.50 3.2 1,582,000 110,125,000 1,683,000

Measured &

Indicated

320,229,000 0.50 3.7 5,172,000 37,953,000 5,552,000

Inferred 31,242,000 0.51 3.0 507,000 3,013,000 537,000

1. Numbers are rounded to reflect the precision of a resource estimate.

2. The estimated mineral resources that are not mineral reserves do not have demonstrated economic viability.

3. Gold equivalent ounces are estimated for mineral resources using 100:1 silver to gold ratio that assumes base case

metal prices of $1,300 and $25 for gold and silver respectively and metallurgical recoveries of 60% for gold and 31% for

silver.

4. The mineral resources in this press release were estimated using the Canadian Institute of Mining, Metallurgy and

Petroleum (CIM), CIM Standards on Mineral Resources and Reserves, Definitions and Guidelines prepared by the CIM

Standing Committee on Reserve Definitions and adopted by CIM Council December 11, 2005.

5. IMZ is not aware of any known environmental, permitting, legal, title, taxation, socio-economic, marketing, political, or

other relevant factors that could materially affect the validity of these resource estimates.

43

IMZ - Converse, Nevada - IMZ 100% - Scoping Study - December 2011

Operation • Open pit, 45,000 tpd.

• Heap leach (Dore)

• Recovery: ~60% Au, 30% Ag

• 13.5 year mine life

• Strip ratio: 2.3:1

P&P Reserves • No reserves defined to date

Resources • M+I : 320Mt @ 0.50 g/t Au and 3.7 g/t Ag

(5.2M oz Au, 38.0M oz Ag)

• Inferred: 31.2Mt @ 0.51 g/t Au and 3.0 g/t Ag

(507,000 oz Au, 3.0M oz Ag)

Production

Estimates

• Average/year: 160,000 oz Au, 638,000 oz Ag

• Direct Cash Costs /oz: $750 (net of Ag credit)

• Total Cash Costs/oz (incl capex): $1,000 (net of Ag credit)

Initial Capital • $455 million

Base Case

Economics $1,300/oz Gold

$25/oz Silver

• NPV0%: ~$494M

• NPV8%: $70M

• IRR: 11%

• Cost per tonne ore processed: $8.35

Sensitivity •$1600/oz Au & $31/oz Ag:

NPV0%= $1,158M, NPV8%= $440M, IRR=22%

Outlook • Project under review

Production Estimate

219

156

183

151

Avg Pre-tax Operating Cash Flow /Year

Au Price / Ounce

$1000 $1200 $1400 $1600 $1800

Year 1 Year 2 Year 3 Year 4

Gold (,000ozs)

$120

$80

$40

$ 0

Millio

ns

$160

$2000

$151

$119

-$13

$20

$53

$86

$184

$2200

$200

44

Converse Project, Nevada - Scoping Study Results

Item Units

Base Case gold price $ per ounce $1300

Base Case silver price $ per ounce $25

Initial mine life years 13.5

Strip ratio Waste rock : mineralized rock 2.3 : 1

Average annual gold production ounces/year 160,000

Average annual silver production ounces/year 638,000

Average annual gold equiv. production 3 ounces/year 173,000

Life-of-mine gold production ounces 2,165,000

Life-of-mine silver production ounces 8,471,000

Life-of-mine gold equiv. production 3 ounces 2,328,000

Plant processing rate (~45,000 tpd) tonnes/year 16,556,000

Metallurgical recovery – gold % 60%

Metallurgical recovery – silver % 31%

Initial capital 2 $ millions $455

Total cash operating cost per tonne processed $8.35

Total cash operating cost 4 per ounce Au (with Ag credit) $745

Pre-tax IRR % 10.5%

Pre-tax cash flow (non-discounted) 5 $ millions $494

Pre-tax NPV, 5% discount rate 5 $ millions $185

Pre-tax NPV, 8% discount rate 5 $ millions $70

1) The scoping study is preliminary in nature, in that it includes inferred mineral resources that are considered too speculative

geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves. There

is no certainty that the results of the scoping study will be realized and actual results may vary substantially.

2) Initial Capital includes $60 million in contingency allowance. Costs are based on Q3 2011 estimates and no escalation factors have

been applied.

3) Gold equivalents for production are estimated using a silver-to-gold ratio of 52:1 calculated by using the base case metal prices.

4) By-product accounting in accordance with the Gold Institute definition.

5) Cash flow and Net Present values (“NPV”) are all shown pre-tax, but include 5% net smelter return (“NSR”) royalty payable to third

parties and refining and transportation charges.

45

Converse Project, Nevada- Sensitivity to Gold & Silver Prices

Gold Price / Silver Price ($/oz)

BASE CASE

Category $1,000/

$19.00

$1,200/

$23.00

$1,300/

$25.00

$1,400/

$27.00

$1,600/

$31.00

$1,800/

$35.00

$2,000/

$39.00

IRR -4.3% 6.0% 10.5% 14.7% 22.5% 29.8% 36.8%

Cash Flow

($ millions)

-171 272 494 715 1,158 1,602 2,045

NPV 5%

($ millions)

-269 33 185 336 639 941 1,244

NPV 8%

($ millions)

-300 -54 70 193 440 687 934

Pre-tax Sensitivity Analyses (base-case in bold)

46

Directors and Other Officers

Directors Position Profession Nationality

Stephen Kay President/CEO Geologist British

Rod McKeen Corp. Secretary and

Legal Counsel, Canada

Lawyer Canadian

Mike Smith Audit Committee Chairman Chartered

Accountant

Canadian

Gabriel Bianchi Independent Director Asset Manager Swiss

Roberto Baquerizo Independent Director Asset Manager Ecuadorian/U.S.

Jorge Paz Legal Counsel, Ecuador Lawyer Ecuadorian/Swiss

John Hick Chair of Compensation and

Corporate Governance

Committees.

Lead Independent Director

Lawyer Canadian

Other Officers

Scott Brunsdon

Nick Appleyard

CFO

VP Corp. Development

Economist

Geologist

Canadian/U.S.

Australian

Paul Durham VP Corp. Relations Geologist British

Alan Matthews VP Special Projects Mining Engineer British