Investor Presentation - August 2014

1

COBRE DEL MAYO Investor Presentation August 2014 All amounts in USD million ($M) unless otherwise noted

2

Disclaimer and Forward Looking Statements

COBRE DEL MAYO 2

The information contained herein has been prepared to assist interested parties in making their own evaluation of the Company and does not purport to be all inclusive or to contain all of the information that a prospective purchaser may desire. You should refer to the information in the Preliminary Offering Circular before making any investment decision to purchase the offered Notes. Forward Looking Statements This Investor Presentation and other communication with investors include forward-looking statements. These forward- looking statements include, without limitation, statements regarding our future financial position and results of operations, our strategy, plans, objectives, goals and targets, future developments in the markets in which we participate or are seeking to participate or anticipated regulatory changes in the markets in which we operate or intend to operate. In some cases, forward-looking statements can be identified by terminology such as “aim,” “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “forecast,” “guidance,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should” or “will” or the negative of such terms or other comparable terminology.

By their nature, forward-looking statements involve risks and uncertainties because they relate to events and depend on circumstances that may or may not occur in the future. We caution potential investors that forward-looking statements are not guarantees of future performance and are based on numerous assumptions and that our actual results of operations, financial condition and liquidity may differ materially from (and be more negative than) those made in, or suggested by, the forward-looking statements contained in this Offering Memorandum. In addition, even if our results of operations, financial condition and liquidity and the development of the industry in which we operate, are consistent with the forward-looking statements contained in this Management Discussion and Analysis Report, those results or developments may not be indicative of results or developments in subsequent periods. Important factors that could cause these differences include, but are not limited to: In light of these risks, uncertainties and assumptions, the forward-looking events described in this Management Discussion and Analysis Report may not occur. We undertake no obligation to update or revise any forward-looking statement, whether as a result of new information or future events or developments.

•  risks related to our competitive position; •  risks related to our strategy and expectations about growth in demand for

copper and business operations, financial condition and results of operations;

•  risks related to the revocation, expropriation or termination of our mining concessions or our water concessions or of the agreements pursuant to which we explore or exploit mining concessions belonging to third parties;

•  the inability to be compensated fairly in the event of termination of our mining concessions or our water concessions;

•  the impact of fluctuations in the market price for copper; •  the impact of changes in the prices of raw materials, labor and our products; •  our relationship with unions and our ability to negotiate collective bargaining

agreements;

•  the availability of materials and equipment; •  our access to funding sources, and the cost of the funding; •  changes in regulatory, administrative or economic conditions affecting the

mining industry, including government interpretations and policies; •  the application and enforcement of environmental laws and regulations; •  risks related to Mexico’s social, political or economic environment; •  the impact of changes in the end uses of our products; •  fluctuations in the value of the U.S. dollar against the Mexican peso; •  risks associated with market demand for and liquidity of the notes; and •  changes in the taxation of our business.

3

Index

I.   Company Overview

II.   Operational Environment

III.   Industry and Commodity Overview

IV.   Historical Financial Performance

V.   Conclusion

VI.   Annexes

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22

25

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COBRE DEL MAYO 3

I. Company Overview

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Cobre del Mayo Snapshot

§  Cobre del Mayo is a Mexican mining company that operates the Piedras Verdes (PV) open-pit copper mine in Sonora, Mexico

§  Began commercial production in 2006 and operations stopped during 4Q08 due to low copper prices

§  Purchased by Invecture in mid 2009

§  Produces LME Grade A copper cathode and sells refractory and vein type ore for processing into concentrate

§  Third largest copper mine in Mexico as measured by production

§  Mineral resources of 1.7 M tons with estimated remaining mine life of 17+ years

COBRE DEL MAYO 5 13

Piedras Verdes Advantaged Location and Access:

Huatabampo

Chihuahua

Sinaloa

PiedrasVerdes Alamos

Navojoa

Sonora

CiudadObregon

Guaymas

BajaCalifornia

P

C

Deep Water Port

Commercial Airport

Railway

Rail Station

Major Highway

Private Airport

C

P

§  All infrastructure is in place

§  Easily accessible by air, road, rail and ports

§  Extremely competitive transportation costs for off-takers given PV’s location and nearby infrastructure

§  Power: Connected to CFE grid to the mine owned and maintained substation with continuous capacity of 25 MW; CDM is CFE’s single largest customer in the area

§  Water: CDM holds 7 titled water concessions for ~3.9 Mm³/yr while the requirement for the operation of the PV Mine is ~2.0 Mm³/yr

6

Cobre del Mayo Highlights

COBRE DEL MAYO 6 10

Reasonable leverage, very strong credit metrics by comparison with other B/B3 rated companies

Very attractive yield/risk relationship vs. similarly rated mining companies

Cash cost and production enhancement program initiated 2Q’14 with six low capex initiatives to be completed 1H15 Objective: LOM C1 cash cost of $1.65/lb, approximately 58th percentile of global industry cash cost curve (including by-products)

Long life mine of over 17+ years

Located in low risk mining friendly jurisdiction; high quality infrastructure; excellent environmental safety, community relations, and labor record

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Conversion of Piedras Verdes Mine to Stable Operation

COBRE DEL MAYO 7 16

§  Changed from contract mining to owner operation and purchased the former contractor’s equipment fleet

§  Purchased, re-engineered and installed a crushing, screening, conveying and stacking system

§  Conversion from truck dump Run of Mine (ROM) to a primarily crush-conveyor stacked heap leach

§  Undertook the successful re-characterization and modeling of alternative styles of mineralization styles to facilitate improved ore control and better Cu recovery

§  Developed new mining & processing plans and implemented an effective ore quality and grade control system

§  Implemented selective mining of high grade chalcocite ores and sale of ore to Kupari Metals

Monthly Production Evolution (t)

Key Initiatives Implemented Post Acquisition

!543

!!

!%!!!!

!1,000!!

!2,000!!

!3,000!!

!4,000!!

!5,000!!

!6,000!!

Jan!

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Jan!

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Apr!

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Jun!

Tons!

2009! 2013!2012!2011!2010! 2014!

2,661!

Acquisi'on*by*Invecture*

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Ore for Flotation

Stable Low Risk Operations and Processes

§  $272.7M in capex has been invested since 2009 with limited maintenance capex going forward, estimated at $13M/yr LOM

§  Ore processing method is chosen according to grade, mineralization, and leaching and flotation characteristics to provide the best overall economics using: (i) ROM heap leach (ii) Crushed ore heap leach (iii) Sale of ore for concentration

COBRE DEL MAYO 8 16

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17+ Year Mine Life

COBRE DEL MAYO 9

§  Since the acquisition of CDM by Invecture, Management has increased total mineral resources by % 110to over 685 Mt and CDM’s mine life has extended from less than 9 years to over 17 years

§  Management has significantly increased mineral resource estimates based on successful exploration and drilling programs

§  Overall pit shape used to define the minable resources is based on a $2.50/lb copper price

§  157 additional drill holes will be included in a new model to be completed in Q3, with a new reserve estimate in 4Q. The following table will be updated at that time. Current expectations are that relative to the table below, there will be a small decrease in ROM ore and an offsetting increase in Crush and Flotation Feed Ore

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Mine Plan & Resource Evolution (Total Cu, Mt) Summary of Estimated Mineral Reserves and Resources

Ore (kt) Grade (%) Total Cu (t)Ore to ROM 232,292 0.149 345,890Ore to Crushing 190,487 0.307 584,180Ore for Concentrate 54,999 0.567 311,587

Proven & Probable 477,778 0.260 1,241,657Waste 418,540Strip Ratio 0.90 x

Ore (kt) Grade (%) Total Cu (t) Measured 210,738 0.264 557,000 Indicated 326,205 0.243 793,404Total M + I 536,943 0.251 1,350,404Inferred 147,658 0.246 362,368

Total Resource 684,601 0.250 1,731,042

Estimated Reserves

Resources

1,242

1,731

0

200

400

600

800

1,000

1,200

1,400

1,600

1,800

2,000

Mar. '08 Dec. '09 Dec. '11 Sep. '12 / Current

Reserves Resources

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Cobre del Mayo Today

§  The PV Mine has been transformed into a high quality copper producing asset —  Since January 2012, PV has been operating at an average of 82.5 tpd of copper cathode —  LTM 2Q14 sales totaled $236.9 M

•  Cathode production of 28,834 t generating $207.2 M of sales •  Copper contained in ore totaled 16,066 t generating $29.7 M of sales

—  LTM 2Q14 EBITDA of $77.2M —  Strong credit metrics1:

•  Leverage is 2.38x Net Debt / LTM EBITDA (2Q14)

•  Capitalization is 55.0% Debt / Total Capitalization (2Q14) —  Strip Ratio has declined from 3.2x in FY 2012 to 2.2x during 2Q14

COBRE DEL MAYO 10 13

1.  Considering total debt of $240.5M (weighted average interest rate of 10.35%) and $21.2M of Cash and Equivalents 2.  Does not include copper contained in ore sold for concentrate

Cu Cathode Production2 and Total Sales EBITDA and EBITDA Margin

$26.0 $65.6 $105.7 $92.0 $77.2

33% 33%

44%

37% 33%

0%

10%

20%

30%

40%

50%

$0

$25

$50

$75

$100

$125

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

%

$M

EBITDA ($M) EBITDA Margin (%)

$78.2 $197.7 $238.2 $225.2 $207.2

$26.8 $29.7

10.9

22.8

30.7 30.4 28.8

$0

$50

$100

$150

$200

$250

$300

0

6

12

18

24

30

36

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

$M

kt

Cathode Sales ($M) Sales of Ore ($M) Cathode Production (kt)

11

Relevant Agreements and Risk Containment

COBRE DEL MAYO 11

Copper Cathode

§  Trafigura and CDM have entered into a 18-month agreement for 100% of CDM’s cathode production (expires Dec14) — Cathode sold FOB at the mine and paid twice per week against holding certificates

§  Future Bidding Process: Close to termination date CDM will conduct a competitive process to select a purchaser for 100% of the copper cathode. In previous processes, contracts usually have lengths of 6 to 18 months and we have received proposals from 4 to 6 different trading companies

Ore for Concentrate

§  CDM committed to sell copper ore to KM and KM to purchase and process it —  Purchase Price of Ore: Purchase of the ore is a function of the copper recovered

and the current LME copper price with certain freight, handling and operating charges

—  Term: Initial fixed term of 10 years and provides for renewals —  Volume: Since April, 2013, CDM has sold an average of 4,982 tpd with 48 tpd of

copper contained

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Mining Concessions

§  We have the exclusive right to explore and exploit 31 mining concessions with an initial term of 50 years which terminate on various dates between 2043 and 2062 —  26 mining concessions owned by Minerales Frontera Cobre del Mayo (“MFCDM”)1 —  5 mining concessions owned by Grupo Rexgo. The right to exploit these

concessions is governed by a contract subject to arbitration §  Royalties: MFCDM and Grupo Rexgo charge a 3.0% over net sales royalty to CDM for

the copper extracted from those concessions §  Land Ownership: CDM owns all of the land at is mine in addition to a reserve for leach

pad expansion and waste dumps

Notes: 1. Minerales Frontera Cobre del Mayo SA de CV is a Restricted Company for purposes of the Indenture according to the Supplemental Indenture dated February 6, 2014.

12

Relevant Agreements and Risk Containment (cont’d)


Insurance Policy

§  Insurance policy coverage for commercial loss/operational stoppage —  Policy underwritten by Royal & SunAlliance with general coverage up to $200 M

$100 M Committed Credit Line

§  $100 M undrawn, unsecured committed credit line with Banco Azteca to reduce refinancing risk

§  Available through 2021, subject to financial ratio covenants §  Rate: Libor + 6.50%

Mining Tax

§  Mexican government implemented a special duty on mining concessions roughly equivalent to 7.5% of EBITDA starting January, 2014

§  As roughly 95% of CDM ore is derived from Grupo Rexgo mining concessions, tax is payable by the concession holder in respect to its EBITDA

Hedging Arrangement

§  12 month forward sale agreement from July 2014 to June 2015 —  600 t per month @ a fixed price of $6,870/t (approx. $3.11/lb) —  Cash settlement, no margin

§  8 month forward sale agreement from August 2014 to March 2015 —  1,800 t per month @ a fixed price of $7,130/t (approx. $3.23/lb) —  Cash settlement, no margin

Labor / Environmental

§  Safety, environmental compliance and labor relations are key areas of focus §  Since Invecture’s acquisition, CDM has had a solid safety track record

—  Lowest premium for “Riesgo de Trabajo” (worker risk) as classified by IMSS, demonstrating high safety standards

§  Approx. 406 of our 940 employees are represented by the Confederación de Trabajadores de Mexico (“CTM”) —  No work stoppages in the history of CDM

§  Certified as a Socially Responsible company by the Mexican Center for Philanthropy (Centro Mexicano para la Filantropía) and certified as a Clean Industry by the Mexican Federal Attorney for Environmental Protection (Procuraduría Federal de Protección al Ambiente), the enforcement arm of the Mexican environmental ministry

13

Competitive and Stable Cash Cost


Cobre del Mayo Historical C1 Cash Cost

4Q 2013 Estimated Global Copper C1 Cash Cost Curve1

§  Cobre del Mayo C1 cash costs are currently in the industry’s third quartile

1. Source: Wood Mackenzie

$3.63 $2.69 $2.08 $1.99 $1.98 $0.00

$1.00

$2.00

$3.00

$4.00

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

$/lb

<$1.36/lb <$2.33/lb <$4.00/lb

C1 Cash Cost + Sustaining CDM LTM $2.23

<$1.82/lb

C1 Cash Cost: CDM LTM $1.98

14

Significant Combined Opportunity for Low Capex to Achieve Significant Cash Cost Reduction

COBRE DEL MAYO 14

Crusher Fines Classification

(Cathode production increase)

•  Improved recovery from highly altered fines

•  Improved ROM recovery by eliminating fines

•  Increase Cu cathode production by between 5 - 7 tpd

4Q14 $2.5M / $6.0M

Upgrade High Grade Ore Crushing

(Cathode production increase)

•  Finer crushing of ore will increase Cu cathode production by 2 tpd by leaching more crushed ore with better kinetics

4Q14 $2.0M / $1.5M

Project Benefit Timing Capex / EBITDA per yr

•  Separates 65% of coarse leachable fines from 35% high clay fines (slimes) for 2.5 to 4.0 ktpd of ore at 0.40% TCu grade at 80% recovery

•  Increase throughput from 2.0 ktpd to 4.0 ktpd and reduce p80 to 3/8 inch with estimated 8% recovery improvement

Description

4Q14 •  Increase Cu contained in concentrate by 3.5 tpd

$0.1M / $2.0M

Flotation of Classifier Slimes

(Concentrate production increase)

•  An additional bank of flotation cells will recover Cu from classifier slimes

•  A 75% recovery is expected on 1.0 to 1.5 ktpd ore at 0.50% TCu

•  60 mesh material will produce 4 tpd of additional Cu in concentrate

•  This flotation concentrate will be upgraded in the existing cleaner circuit

15

Significant Combined Opportunity for Low Capex to Achieve Significant Cash Cost Reduction (cont’d)

COBRE DEL MAYO 15

Reduction of Waste Haul Distance

(Reduce Opex)

Project Benefit Timing Capex / EBITDA per yr

•  Decrease Opex of $3.4M/yr 4Q14 $2.0M / $3.4M

Description

•  Purchase of 400 Ha of adjacent land east of PV for additional waste dumps

Note: * The engineering, analysis and investment cases for each individual project reflect preliminary estimates which will vary when the respective projects are in stable operation ** Calculations were made considering a copper price of $3.20/lb

Heap Leaching Cleaner Tails

(Cathode production increase & acid production)

•  Increase Cu cathode production by 0.7 tpd ($1.0M/yr)

•  Additional sulphuric acid generation of 90 tpd ($4.0M/yr)

4Q14 <$1.0M / $3.5M

•  Cu and pyrite in cleaner tails from flotation plant will be leached

Replace SXEW Lead Anodes with Titanium

Anodes (Increase nameplate

capacity & reduce opex)

•  Reduce unit electricity consumption by 12% ($0.9M/yr)

•  Elimination of the use of cobalt sulphate ($0.9M/yr)

•  Increase in effective nameplate capacity to 105 tpd

4Q14 to 2Q15

$3.0M / $1.8M

•  Gradually replace lead anodes with titanium anodes to increase name plate capacity

II. Operational Environment

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Stable Operating Environment in Mexico1

COBRE DEL MAYO 17

§  Mexico is an economic leader in Latin America and is the world’s 14th largest economy by GDP (2014E and 2015E real GDP growth of 3.4% and 3.8%, respectively —  High degree of political stability —  OECD/WTO country and member of 12 free trade agreements, including NAFTA —  Mexican Peso has long history of one of the ten most traded global currencies

§  As a result of mining-supportive governmental policies, stability, OECD tax regime and abundance of resources, Mexico has attracted extensive investment from international mining companies —  Over 850 mining companies operate in Mexico; 287 of which have foreign investment, and currently

operate 82 producing projects within Mexico —  ~40% of mine production and ~70% of investments in exploration are undertaken by foreign investors

§  Mexico is recognized as a mining friendly jurisdiction —  Largest producer of silver globally (18% of global production) —  3rd largest producer of copper in Latin America (2013E production of 480kt)

§  Sonora is among the most prolific mining areas and one of the safest states in Mexico

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Total Mining Production in Mexico2

Sonora,'27%'

Zacatecas,'24%'

Chihuahua,'13%'

Coahuila,'8%'

Others,'27%'

2014 Copper Production in Mexico3

Sonora,'79%'

Zacatecas,'10%'

San'Luis'Potosí,'5%'

Others,'6%'

Sources: 1 IMF, Brook Hunt, World Bank, U.S. Geological Survey 2 Secretariat of the Economy, 2012 3 National Institute of Statistics & Geography

III. Industry and Commodity Overview

Jefferies LLC August 2013 /

19

Copper Price Forecasts Over Time

COBRE DEL MAYO 19

§  The market has consistently underestimated the copper price when forecasting long term prices

§  Actual copper prices have been much higher due to continuing shortfalls in supply. Delays in new projects, supply interruption and declining production from existing mines have been the main drivers

18

Copper Historical Price vs. Forecasts

Source: Broker Research 1. With the exception of 2014’s forecast which is as of 13 August 2014

--

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

2010

2009

2008

Actual

2010 LT 2009 LT

2008 LT 2007 LT

2006 LT

2005 LT

2004 LT

2003 LT

2002 LT

2001 LT

2000 LT

2011 LT

2011

2012

2014 LT: $2.98 / lb

2012 LT

2014

2013 LT

2013

Long Term Price (as forecast during Q4 of year indicated) (1)

Actual Copper Price Broker Consensus (as forecast during Q4 of year indicated)


20

Incentive Price Drives the Value of Copper

COBRE DEL MAYO 20

§  Investment in large projects is very capital intensive

§  The incentive price required to justify investments in the expansion of existing mines and the construction of new ones is estimated at $3.50/lb ($7,716/t)

—  Incentive price considers required Cu price to achieve specified rate of return on expansion capex(1)

§  Although short term copper prices are unpredictable, the following graph shows that long term copper must trade above $3.50/lb for global mine copper supply to be maintained

18

Incentive Prices for Major Projects

Source: Wood Mackenzie 1.  Analysis based on long term price required to give a 12.0% risk adjusted IRR on a pre-tax 100% equity basis.

c / l

b

Paid Metal (M lbs)


21

Cu Pricing Considerations

COBRE DEL MAYO 21

§  Copper has traded in the market at a premium to the 90th percentile of the C1 cash cost curve

—  C1 cash cost as estimated by Wood Mackenzie

Source: Wood Mackenzie, LME 1. 90th percentile as estimated by Wood Mackenzie. LME prices for 2013 4Q. May, 2014.

C1 90th Percentile Costs1 vs. Cu Price

$1.11 $1.62 $2.57 $2.55 $2.39 $2.93

$1.67

$3.42

$4.00

$3.61 $3.32

$3.08

$0.00

$1.00

$2.00

$3.00

$4.00

$5.00

2005 2010 2011 2012 2013 2Q14 LTM

$/lb

C1 Cash Cost 90th Percentile ($/lb) Average Cu Price ($/lb)

IV. Historical Financial Performance

23

Summary Historical Financials


Total Sales and Realized Cu Price Cathode Produced & Copper Contained in Ore Sold

Operating Costs1 C1 Cash Costs

1. Operating cost exclude: Depreciation & amortization, change in Cu process inventory, ARO amortization, and royalties

29.8

62.6

84.1 83.3 79.0

36.7 44.0

0

20

40

60

80

100

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

tpd

Cathode Production (tpd) Copper contained in ore sold (tpd)

$78.2 $197.7 $238.2 $225.2 $207.2

$26.8 $29.7

$3.28 $3.91 $3.57

$3.31 $3.21

$0.00

$1.00

$2.00

$3.00

$4.00

$0

$75

$150

$225

$300

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

$/lb

$M

Cathode Sales ($M) Sales of Ore ($M) Cu Price ($/lb)

$87.3 $135.6 $141.1 $160.0 $160.2 $0

$20

$40

$60

$80

$100

$120

$140

$160

$180

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

$M

$3.63 $2.69 $2.08 $1.99 $1.98

30

63

84 83 79

0

10

20

30

40

50

60

70

80

90

$0.00

$0.50

$1.00

$1.50

$2.00

$2.50

$3.00

$3.50

$4.00

$4.50

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

tpd

$/lb

C1 Cash Cost ($/lb) Cathode Production (tpd)

24

Summary Historical Financials (cont’d)


Capital Expenditures(1)

EBITDA less Capex

EBITDA and EBITDA Margin

$26.0 $65.6 $105.7 $92.0 $77.2

33% 33%

44%

37% 33%

0%

10%

20%

30%

40%

50%

$0

$25

$50

$75

$100

$125

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

%

$M

EBITDA ($M) EBITDA Margin (%)

$75.7 $16.1 $31.4 $41.6 $47.3 $0

$10

$20

$30

$40

$50

$60

$70

$80

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

$M

-$49.7

$49.5 $74.3 $50.4 $29.9

-$60

-$40

-$20

$0

$20

$40

$60

$80

$100

FY 2010 FY 2011 FY 2012 FY 2013 2Q14 LTM

$M

(1) Capital expenditures encompass the acquisition of property, land and equipment. The acquisition of six CAT 789 trucks in 1Q14 did not have any significant impact on the cash flow.

V. Conclusion

26

Comparable Issuers:

Hudbay HBMCN 9½ (1Oct20) B3/B 8.1%

Taseko Mines TKOCN 7¾ (15Apr19) B3/B 7.6%

Thompson Creek TCMCN 9¾ (1Dec17) B1/B 5.4%

Conclusion


Company Ticker Rating YTM1

Cobre del Mayo COBREM 10¾ (15Nov18) B3/B 9.7%

Thompson Creek TCMCN 7⅜ (1Jun18) Caa2/CCC- 7.3%

Thompson Creek TCMCN 12½ (1May19) Caa2/CCC- 9.0%

Source: Bloomberg 1. As of August 29, 2014

§  Operating mine without new project development risk §  Favorable logistics and infrastructure

§  Good labour relations

§  Long life of mine of 16+ years

§  Implementing low capex program to achieve a significant reduction in C1 cash costs

§  $100M undrawn, unsecured committed line with Banco Azteca substantially reduces refinancing risk

§  Reasonable leverage, very strong credit metrics by comparison with other B/B3 rated companies

Attractive Yield/Risk Profile vs. Peers: COBREM bonds yield substantially wide of any reasonable comparable

VI. Annexes

28

Annex 1: Corporate Structure

COBRE DEL MAYO 28 8

Represents the guarantors of the notes offered hereby

Invecture Group, S.A. de C.V.

(Mexico)

Lawrie Associates (United Kingdom)

Frontera Cobre del Mayo, S.A. de C.V.

(Mexico)

Servicios Corporativos del

Mayo, S.A. de C.V. (Mexico)

Mayoson, S.A. de C.V.

(Mexico)

Compañía Minera Frontera Cobre del Mayo, S.A. de C.V.

(Mexico)

Minerales Frontera Cobre del Mayo,

S.A. de C.V. (Mexico)

Servicios Frontera Cobre del Mayo,

S.A. de C.V. (Mexico)

Cobre del Mayo, S.A. de C.V.

(Mexico)

Frontera Copper Corporation

(Mexico)

100%

100%

100%

71.2%

28.8

%

Preferred Shares $11.7 million

ISSUER

Documents

Investor Presentation - August 2014