Bond Codelco 4.5% ( USP3143NAZ70 ) in USD

Codelco

100 % ▲

Chile

USP3143NAZ70 ( in USD )

4.5% per year ( payment 2 times a year)

31/07/2047

Prospectus brochure of the bond Corporación Nacional del Cobre de Chile USP3143NAZ70 en USD 4.5%, maturity 31/07/2047

200 000 USD

1 250 000 000 USD

P3143NAZ7

A+ ( Upper medium grade - Investment-grade )

A3 ( Upper medium grade - Investment-grade )

01/08/2026 ( In 175 days )

Codelco, or Corporación Nacional del Cobre de Chile, is a Chilean state-owned copper mining company, the world's largest copper producer.

The Bond issued by Codelco ( Chile ) , in USD, with the ISIN code USP3143NAZ70, pays a coupon of 4.5% per year.
The coupons are paid 2 times per year and the Bond maturity is 31/07/2047

The Bond issued by Codelco ( Chile ) , in USD, with the ISIN code USP3143NAZ70, was rated A3 ( Upper medium grade - Investment-grade ) by Moody's credit rating agency.

The Bond issued by Codelco ( Chile ) , in USD, with the ISIN code USP3143NAZ70, was rated A+ ( Upper medium grade - Investment-grade ) by Standard & Poor's ( S&P ) credit rating agency.

OFFERING MEMORANDUM
U.S.$2,750,000,000
Corporación Nacional del Cobre de Chile
U.S.$1,500,000,000 3.625% Notes due 2027
U.S.$1,250,000,000 4.500% Notes due 2047
The notes due 2027 (the "2027 notes") will bear interest at the rate of 3.625% per year and will mature on
August 1, 2027 and the notes due 2047 (the "2047 notes") will bear interest at the rate of 4.500% per year and will
mature on August 1, 2047. We refer to the 2027 notes and the 2047 notes, collectively, as the "notes" and,
separately, as a "series of notes." The interest on each series of notes will be payable semi-annually in arrears on
February 1 and August 1 of each year, beginning on February 1, 2018.
We may redeem the notes at our option, in whole or in part, at any time and from time to time prior to the date that
is three months, in respect of the 2027 notes, and six months, in respect of the 2047 notes, prior to the maturity
date of the 2027 notes and the 2047 notes, respectively, at a redemption price equal to the greater of 100% of the
outstanding principal amount of the notes to be redeemed and a redemption price based on a "make-whole"
premium, plus accrued and unpaid interest to the date of redemption. In addition, we may redeem the notes at our
option, in whole or in part, at any time and from time to time, beginning on the date that is three months, in respect
of the 2027 notes, and six months, in respect of the 2047 notes, prior to the maturity date of the 2027 notes and the
2047 notes, respectively, at a redemption price equal to 100% of the outstanding principal amount of the notes to
be redeemed, plus accrued and unpaid interest to the date of redemption. Upon the occurrence of specified events
relating to Chilean tax law, we may redeem the notes in whole, but not in part, at 100% of their principal amount,
plus accrued and unpaid interest to the date of redemption. See "Description of Notes--Tax Redemption" and "--
Optional Redemption"
The notes will constitute direct, general, unconditional and unsubordinated obligations of Corporación Nacional
del Cobre de Chile ("CODELCO" or the "Company"). The notes rank and will rank without any preference
among themselves and equally with all other unsubordinated obligations of CODELCO, other than certain
obligations granted preferential treatment pursuant to Chilean law. It is understood that this provision will not be
construed so as to require CODELCO to make payments under the notes ratably with payments being made under
any other obligations. See "Description of Notes--Ranking."
Application has been made to list the notes on the Official List of the Luxembourg Stock Exchange and for trading
on the Euro MTF market of the Luxembourg Stock Exchange. This Listing Memorandum constitutes a
"prospectus" for purposes of the Luxembourg Act dated July 10, 2005 on prospectuses for securities, as amended.
See "Risk Factors" beginning on page 15 for a discussion of certain risks that you should consider in
connection with an investment in the notes.
Neither the U.S. Securities and Exchange Commission (the "SEC") nor any other regulatory body has
approved or disapproved of these securities or passed upon the adequacy or accuracy of this offering
memorandum. Any representation to the contrary is a criminal offense.
The notes have not been registered under the United States Securities Act of 1933, as amended (the "Securities
Act"), or any state securities laws, and are being offered and sold only to (i) qualified institutional buyers under
Rule 144A under the Securities Act and (ii) persons outside the United States under Regulation S under the

cover page continues to this page
Securities Act. For a description of certain restrictions on the transfer of the notes, see "Transfer Restrictions" and
"Plan of Distribution."
The notes will be delivered in book-entry form only through the facilities of The Depository Trust Company
("DTC") and its direct and indirect participants, including Euroclear Bank S.A./N.V. ("Euroclear"), as operator of
the Euroclear system, and Clearstream Banking, société anonyme, Luxembourg ("Clearstream") on or about
August 1, 2017.
We have launched a cash tender offer for (a) any and all (the "Any and All Offer") of our outstanding (i)
U.S.$600,000,000 aggregate principal amount of 7.500% Notes due 2019 (the "2019 Notes"), (ii)
U.S.$1,000,000,000 aggregate principal amount of 3.750% Notes due 2020 (the "2020 Notes") and (iii)
U.S.$1,150,000,000 aggregate principal amount of 3.875% Notes due 2021 (the "2021 Notes" and, together with the
2019 Notes and the 2020 Notes, the "Any and All Notes") and (b) up to U.S.$2,750,000,000 aggregate principal
amount, less the aggregate principal amount of the Any and All Notes validly tendered and accepted for purchase in
the Any and All Tender Offer (the "Maximum Tender Offer" and, together with the Any and All Offer, the "Tender
Offers") of (i) the 3.000% Notes due 2022 (the "2022 Notes"), (ii) the 4.500% Notes due 2023 (the "2023 Notes")
and (iii) the 4.500% Notes due 2025 (the "2025 Notes," and, together with the Any and All Notes, 2022 Notes and
the 2023 Notes, the "Tender Notes"), in each case, validly tendered and accepted by us on or before the expiration
date of the applicable Tender Offer. We intend to use the net proceeds from the sale of the notes (i) to pay the
consideration for the Tender Offers and accrued and unpaid interest on the Tender Notes, (ii) to pay fees and
expenses incurred in connection with the Tender Offers and (iii) the remainder, if any, for general corporate
purposes. The Tender Offers are not being made pursuant to this offering memorandum. The closing of the Tender
Offers is contingent upon the closing of this offering.
Issue price: 2027 Notes: 98.237% plus accrued interest, if any, from August 1, 2017.
2047 Notes: 97.208% plus accrued interest, if any, from August 1, 2017.
Joint Book-Running Managers
BofA Merrill
HSBC
J.P. Morgan
MUFG
Lynch
The date of this offering memorandum is
, 2017.

Radomiro Tomic
El Abra
Chuquicamata
Ministro Hales
Gabriela Mistral
Salvador
Ventanas
Andina
Santiago
(Headquarters)
El Teniente
(Illustrative map of continental Chile)

We have not authorized anyone to provide any information other than that contained in this offering
memorandum. We take no responsibility for, and can provide no assurance as to the reliability of, any other
information that others may give you. We are not, and the initial purchasers are not, making an offer of
these securities in any jurisdiction where the offer is not permitted. Prospective investors should not assume
that the information contained in this offering memorandum is accurate as of any date other than the date on
the front of this offering memorandum.
After having made all reasonable inquiries, we confirm that (i) the information contained in this offering
memorandum is true and accurate in all material respects, (ii) the opinions and intentions expressed herein are
honestly held and (iii) there are no other facts the omission of which would make this offering memorandum as a
whole, or any of such information or the expression of any such opinions or intentions, misleading. CODELCO
accepts responsibility accordingly.

Unless otherwise indicated or the context otherwise requires, all references in this offering memorandum to
"CODELCO," the "Company," "we," "our," "ours," "us" or similar terms refer to Corporación Nacional del Cobre
de Chile (CODELCO) together with its subsidiaries.
TABLE OF CONTENTS

Page
Note Regarding Forward Looking Statements ........................................................................................................ iv
Enforceability of Civil Liabilities ............................................................................................................................... v
Presentation of Financial and Statistical Information ............................................................................................ vi
Summary ...................................................................................................................................................................... 1
Summary Consolidated Financial Data ................................................................................................................... 12
Risk Factors ............................................................................................................................................................... 15
Use of Proceeds .......................................................................................................................................................... 28
Capitalization ............................................................................................................................................................. 29
Exchange Rates .......................................................................................................................................................... 30
Selected Consolidated Financial Data ...................................................................................................................... 31
Selected Operating Data ........................................................................................................................................... 35
Management's Discussion and Analysis of Financial Condition and Results of Operations .............................. 37
Business and Properties ............................................................................................................................................ 60
Overview of the Copper Market .............................................................................................................................. 86
Regulatory Framework ............................................................................................................................................. 89
Management ............................................................................................................................................................... 95
Related Party Transactions ...................................................................................................................................... 99
Foreign Investment and Exchange Controls in Chile ........................................................................................... 101
Description of Notes ................................................................................................................................................ 102
Taxation .................................................................................................................................................................... 115
Plan of Distribution ................................................................................................................................................. 119
Transfer Restrictions ............................................................................................................................................... 125
Validity of the Notes ................................................................................................................................................ 128
Independent Auditors ............................................................................................................................................. 129
Glossary of Certain Mining Terms ........................................................................................................................ 130
General Information ............................................................................................................................................... 134
Unaudited Interim Consolidated Financial Statements for the three months ended March 31, 2017
and 2016 .................................................................................................................................................................... F-1
Consolidated Financial Statements for the Years Ended December 31, 2015 and 2016 ............................... F-116
Consolidated Financial Statements for the Years Ended December 31, 2014 and 2015 ............................... F-237

i

The notes may not be offered or sold, directly or indirectly, in the Republic of Chile ("Chile") or to any
resident of Chile, except as permitted by applicable Chilean law.
This offering memorandum has been prepared by CODELCO solely for use in connection with the
proposed offering of the securities described herein. This offering memorandum does not constitute an offer to any
other person or to the public generally to subscribe for, or otherwise acquire, securities. We and the initial
purchasers reserve the right to reject for any reason any offer to purchase any of the notes.
This offering memorandum may only be used for the purposes of this offering.
The initial purchasers make no representation or warranty, express or implied, as to the accuracy or
completeness of the information contained in this offering memorandum. Nothing contained in this offering
memorandum is, or shall be relied upon as, a promise or representation by the initial purchasers as to the past or
future. CODELCO has furnished the information contained in this offering memorandum.
In making an investment decision, prospective investors must rely on their own examination of CODELCO
and the terms of the offering, including the merits and risks involved. Prospective investors should not construe
anything in this offering memorandum as legal, business or tax advice. Each prospective investor should consult its
own advisors as needed to make its investment decision and to determine whether it is legally permitted to purchase
the securities under applicable legal investment or similar laws or regulations. Investors should be aware that they
may be required to bear the financial risks of this investment for an indefinite period of time.
This offering memorandum contains summaries believed to be accurate with respect to certain documents,
but reference is made to the actual documents for complete information. All such summaries are qualified in their
entirety by such reference. Copies of documents referred to herein will be made available to prospective investors
(i) upon request to CODELCO or the initial purchasers and (ii) at the office of the Luxembourg paying agent.
IN CONNECTION WITH THIS OFFERING, HSBC SECURITIES (USA) INC., J.P. MORGAN
SECURITIES LLC, MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED OR
MUFG SECURITIES AMERICAS INC., OR ANY PERSON ACTING FOR ANY OF THEM, MAY
OVER-ALLOT OR EFFECT TRANSACTIONS WITH A VIEW TO SUPPORTING THE MARKET
PRICE OF THE NOTES AT A LEVEL HIGHER THAN THAT WHICH MIGHT OTHERWISE PREVAIL
FOR A LIMITED PERIOD AFTER THE ISSUE DATE. HOWEVER, THERE IS NO OBLIGATION FOR
HSBC SECURITIES (USA) INC., J.P. MORGAN SECURITIES LLC, MERRILL LYNCH, PIERCE,
FENNER & SMITH INCORPORATED OR MUFG SECURITIES AMERICAS INC., OR ANY PERSON
ACTING FOR ANY OF THEM, TO DO THIS. SUCH STABILIZING, IF COMMENCED, MAY BE
DISCONTINUED AT ANY TIME, AND MUST BE BROUGHT TO AN END AFTER A LIMITED
PERIOD.
You must: (i) comply with all applicable laws and regulations in force in any jurisdiction in connection
with the possession or distribution of this offering memorandum and the purchase, offer or sale of the notes; and
(ii) obtain any consent, approval or permission required to be obtained by you for the purchase, offer or sale by you
of the notes under the laws and regulations applicable to you in force in any jurisdiction to which you are subject or
in which you make such purchases, offers or sales; neither we nor the initial purchasers shall have any responsibility
therefor.
The notes are subject to restrictions on resale and transfer as described under "Transfer Restrictions." By
purchasing the notes, you will be deemed to have made certain acknowledgments, representations and agreements as
described under "Transfer Restrictions." You may be required to bear the financial risks of investing in the notes for
an indefinite period of time.

ii

You acknowledge that:

you have been afforded an opportunity to request from us, and to review, all additional information
considered by you to be necessary to verify the accuracy of, or to supplement, the information
contained in this offering memorandum;

you have not relied on the initial purchasers or any person affiliated with the initial purchasers in
connection with your investigation of the accuracy of such information or your investment decision;
and

no person has been authorized to give any information or to make any representation concerning us or
the notes, other than as contained in this offering memorandum and, if given or made, any such other
information or representation should not be relied upon as having been authorized by us or the initial
purchasers.
This offering memorandum is only being distributed to and is only directed at: (i) persons who are outside
the United Kingdom (the "UK"); (ii) investment professionals falling within Article 19(5) of the Financial Services
and Markets Act 2000 (Financial Promotion) Order 2005 (the "Order"); or (iii) high net worth entities, and other
persons to whom it may lawfully be communicated, falling within Article 49(2)(a) to (d) of the Order (all such
persons together being referred to as "relevant persons"). Any notes will only be available to, and any invitation,
offer or agreement to subscribe, purchase or otherwise acquire such notes will be engaged in only with, relevant
persons. Any person who is not a relevant person should not act or rely on this offering memorandum or any of its
contents.
To the extent that the offer of the notes is made in any European Economic Area Member State before the
date of publication of a prospectus in relation to the notes which has been approved by the competent authority in
that Member State in accordance with Directive 2003/71/EC (as amended, including any applicable implementing
measures in any Member State, the "Prospectus Directive") (or, where appropriate, published in accordance with the
Prospectus Directive and notified to the competent authority in that Member State in accordance with the
Prospectus Directive), the offer (including any offer pursuant to this offering memorandum) is only addressed to
qualified investors in that Member State within the meaning of the Prospectus Directive or has been or will be made
otherwise in circumstances that do not require the Company to publish a prospectus pursuant to the
Prospectus Directive.
See "Risk Factors" beginning on page 15 for a description of certain risks you should consider before
investing in the notes.

iii

NOTE REGARDING FORWARD-LOOKING STATEMENTS
This offering memorandum contains forward-looking statements. We may from time to time make
forward-looking statements (i) in our annual report; (ii) in prospectuses, press releases and other written materials;
and (iii) in oral statements made by our officers, directors or employees to analysts, institutional investors,
representatives of the media and others. Examples of these forward-looking statements include:

projections of revenues, profit (loss), capital expenditures, dividends, capital structure or other
financial items or ratios;

statements of our plans, objectives or goals, including those relating to anticipated trends, competition,
regulation and rates;

statements about our future economic performance or that of Chile or other countries in which we have
investments; and

statements of assumptions underlying these statements.
Words such as "believe," "could," "may," "will," "anticipate," "plan," "expect," "intend," "target,"
"estimate," "project," "potential," "guideline," "should" and similar expressions are intended to identify
forward-looking statements, but are not the exclusive means of identifying these statements.
Forward-looking statements involve inherent risks and uncertainties. We caution you that a number of
important factors could cause actual results to differ materially from the plans, objectives, expectations, estimates
and intentions expressed in these forward-looking statements. These factors, some of which are discussed under
"Risk Factors," include economic and political conditions and government policies in Chile or elsewhere, inflation
rates, exchange rates, regulatory developments and changes in Chilean law, customer demand, competition,
unanticipated mining and production problems, commodity prices, relations with employees and contractors,
variances in ore grade, adverse weather conditions and natural disasters. We caution you that the foregoing list of
factors is not exclusive and that other risks and uncertainties may cause actual results to differ materially from those
in forward-looking statements.
You are cautioned not to place undue reliance on these forward-looking statements which reflect our views
only as of the date they are made, and we do not undertake any obligation to update them or publicly to release the
result of any revisions to these forward-looking statements in light of new information or future developments after
the date of this offering memorandum.

iv

ENFORCEABILITY OF CIVIL LIABILITIES
CODELCO is a state-owned enterprise organized under the laws of Chile. All of its directors and
executive officers and certain experts named in this offering memorandum reside outside the United States
(principally in Chile), and all or a substantial portion of the assets of CODELCO and of such persons are located
outside the United States. As a result, it may not be possible for investors to effect service of process within the
United States on, or bring actions or enforce foreign judgments against, CODELCO or such persons in U.S. courts.
In addition, CODELCO has been advised by its Chilean counsel, Carey y Cía. Ltda., that no treaty exists between
the United States and Chile for the reciprocal enforcement of foreign judgments. There is also doubt as to the
enforceability in Chilean courts of judgments of U.S. courts obtained in actions predicated upon the civil liability
provisions of U.S. federal securities laws. Chilean courts, however, have enforced judgments rendered in the
United States by virtue of the legal principles of reciprocity and comity, subject to the review in Chile of the U.S.
judgment in order to ascertain whether certain basic principles of due process and public policy have been respected,
without reviewing the merits of the subject matter of the case. Lastly, CODELCO has been advised by Carey y Cía.
Ltda. that there is doubt as to the enforceability in original actions in Chilean courts of liabilities predicated solely
upon U.S. federal securities laws.
The notes, the indenture and the purchase agreement will provide that CODELCO will appoint the
Chilean consul in New York City as its agent upon whom process may be served in any action arising out of or
based upon, respectively, the notes, the indenture, the purchase agreement or the transactions contemplated thereby,
which may be instituted in any federal or state court having "subject matter" jurisdiction. See "Description of
Notes."
Pursuant to the Chilean Mining Code, mining concessions as well as certain raw materials and other
property or assets permanently dedicated to the exploration or extraction of minerals cannot be subject to an order of
attachment, except with respect to mortgages, in the case that the debtor consents to the attachment in the same
enforcement proceeding or when the debtor is a stock corporation. In addition, pursuant to the Chilean constitution
(the "Constitution"), mining concessions corresponding to mining deposits exploited by CODELCO upon its
creation in 1976 cannot be subject to attachment nor to any act of disposition by CODELCO. As a result, the rights
of holders to attach property of CODELCO in the event of a default under the notes would be limited by such
provisions. See "Regulatory Framework--Mining Regulations."

v

PRESENTATION OF FINANCIAL AND STATISTICAL INFORMATION
In this offering memorandum, references to "U.S.$," "$," "U.S. dollars" and "dollars" are to United States
dollars and references to "cents" are to United States cents (U.S.$0.01). References to "pesos" or "Ch$" are to
Chilean pesos and references to "UF" are to "Unidades de Fomento." The UF is an inflation-indexed Chilean
monetary unit that is linked to, and adjusted daily to reflect changes in, the Chilean consumer price index during the
preceding 30 days. References to "euro" or "" are to the legal currency of the European Economic and Monetary
Union.
Pursuant to Circular No. 368 (Oficio Circular No. 368) of October 2006, as amended, of the
Superintendencia de Valores y Seguros (Chilean Superintendency of Securities and Insurance, or "SVS"), beginning
in 2010, all companies with publicly traded securities in Chile are required to prepare and report consolidated
financial statements in accordance with International Financial Reporting Standards ("IFRS") as issued by the
International Accounting Standards Board ("IASB"). As of January 1, 2010, CODELCO no longer prepares
financial statements in accordance with generally accepted accounting principles in Chile.
In September 2014, an extensive tax reform in Chile became effective which, among other changes,
increased the corporate statutory income tax rates beginning in 2014. With respect to deferred tax assets and
liabilities arising as a result of this increased corporate statutory income tax rate, Circular No. 856 (Oficio Circular
No. 856) issued by the SVS requires us to record such effects as equity. This SVS requirement differs from the
accounting treatment under IFRS, which requires such effects to be reported as an income tax expense in the results
of operations. The impact on CODELCO's consolidated financial statements for the year ended December 31, 2014
included in this offering memorandum corresponds to a one-time charge against profit in the amount of
U.S.$783.62 million for 2014 to income tax expense, U.S.$646.90 million of which corresponds to the impact on
CODELCO and those subsidiaries in which it has a controlling interest and U.S.$136.72 million of which
corresponds to the impact on those subsidiaries in which CODELCO does not have a controlling interest. It should
be noted that the consolidated financial statements as of and for the year ended December 31, 2014 included in this
offering memorandum have been prepared in accordance with IFRS. Therefore, the consolidated financial
statements as of and for the year ended December 31, 2014 filed with the SVS, and published on CODELCO's
website, which have recorded this one-time charge directly to equity, differ from the financial statements prepared
under IFRS, which have recorded this one-time charge as an income tax expense. To the extent that CODELCO
issues its consolidated financial statements under SVS requirements, such consolidated financial statements will not
be in compliance with IFRS in this regard with respect to the accounting treatment of the effects of the change in the
corporate statutory income tax rate explained above.
The audited consolidated financial statements for the years ended December 31, 2014 and 2015 included
herein are referred to as the "2014-2015 Year-end Consolidated Financial Statements" and the audited consolidated
financial statements as of and for the years ended December 31, 2015 and 2016 also included herein are referred to
as the "2015-2016 Year-end Consolidated Financial Statements." The 2014-2015 Year-end Consolidated Financial
Statements and the 2015-2016 Year-end Consolidated Financial Statements (together, the "Year-end Consolidated
Financial Statements") are presented in accordance with IFRS as issued by the IASB.
The unaudited interim consolidated financial statements as of March 31, 2017 and for the three-month
periods ended March 31, 2016 and 2017 included herein (the "Unaudited Interim Consolidated Financial
Statements") are presented in accordance with IAS 34 "Interim Financial Reporting." The Unaudited Interim
Consolidated Financial Statements and the Year-end Consolidated Financial Statements are referred to together as
the "Consolidated Financial Statements."
The accounting policies adopted in the preparation of the Unaudited Interim Consolidated Financial
Statements are consistent with those applied in the preparation of the 2015-2016 Year-end Consolidated Financial
Statements. See "Management's Discussion and Analysis of Financial Condition and Results of Operations--New
Accounting Standards."
Unless otherwise indicated, the Consolidated Financial Statements and other financial information
concerning CODELCO included herein are presented in U.S. dollars in conformity with Decree Law 1.350 of 1976,
as amended by Law 20.392 published in the Diario Oficial de la República de Chile (the "Official Gazette") on

vi

November 14, 2009, and for periods after January, 1, 2009, in accordance with IFRS. Decree Law 1.350 is the
Chilean law pursuant to which CODELCO was created and which provides for its governance.
Because the notes offered hereby have not been and will not be registered with the SEC, this offering
memorandum does not and is not required to comply with the applicable requirements of the Securities Act, and the
related rules and regulations adopted by the SEC, which would apply if the notes offered hereby were being
registered with the SEC.
The U.S. dollar is the currency used in the primary economic environment in which CODELCO operates.
Nevertheless, as an international company operating primarily in Chile, as well as in several other Latin American
countries, several European countries and China, a portion of CODELCO's business is transacted in Chilean pesos
and other non-dollar currencies.
The body of generally accepted accounting principles is commonly referred to as "GAAP." A non-GAAP
financial measure is generally defined by the SEC as one that purports to measure historical or future financial
performance, financial position or cash flows but: (i) excludes amounts, or is subject to adjustments that have the
effect of excluding amounts, that are included in the most directly comparable measure calculated and presented in
accordance with GAAP in the issuer's statement of income, balance sheet or statement of cash flows (or equivalent
statements); or (ii) includes amounts, or is subject to adjustments that have the effect of including amounts, that are
excluded from the most directly comparable measure so calculated and presented.
In this offering memorandum, CODELCO discloses several non-GAAP financial measures, including
"Adjusted EBIT," "Adjusted EBITDA," "cash cost," "total costs and expenses" and "financial debt." Adjusted
EBIT is calculated by adding finance cost, impairment charges and income tax expense to profit (loss) for the
period. Adjusted EBITDA is calculated by adding finance cost, income tax expense, depreciation and amortization
of assets plus export taxes and impairment charges to profit (loss) for the period. Cash cost is calculated in
accordance with the methodology specified by Brook Hunt & Associates for the determination of C1 cost (cash cost)
and includes all direct cash costs of mining, including costs associated with extraction, leaching, smelting and
further processing of copper ores into refined metal, as well as labor, electricity, diesel, finance costs, third-party
services, other costs, transportation and physical plant costs associated with those processes, net of income from
sales of by-products. Cash cost is presented as a nominal dollar amount, usually expressed as cents per pound, and
excludes provisions, amortization, depreciation and central office costs. Total costs and expenses is calculated by
adding the costs of sales of CODELCO's own copper plus the finance costs, less finance income, plus other
expenses, excluding expenses corresponding to Law N° 13.196, less other income by function. Financial debt is
calculated as loans from financial institutions plus bonds issued. Total debt to capitalization includes total financial
debt divided by total financial debt plus total equity.
Adjusted EBIT and Adjusted EBITDA data are included in this offering memorandum because such data
are used by investors to assess: (i) the operating trends and financial performance of the Company and (ii) the
ability of the Company to (a) service its existing debt, (b) incur new debt and (c) fund its capital expenditures.
CODELCO believes that Adjusted EBIT and Adjusted EBITDA, while providing useful information,
should not be considered in isolation or as a substitute for profit for the period as an indicator of operating
performance or as an alternative to cash flow as a measure of liquidity. Adjusted EBIT and Adjusted EBITDA are
not measures of financial performance in accordance with IFRS. Additionally, CODELCO's calculation of Adjusted
EBIT and Adjusted EBITDA may differ from the calculation used by other companies and, therefore, comparability
may be affected.
Cash cost is disclosed in this offering memorandum because it is a widely used measure of costs in the
mining industry. CODELCO believes that cash cost, while providing useful information, should not be considered in
isolation or as a substitute for cost of sales, cost of selling and administrative expenses or as an indicator of costs.
Cash cost is not a measure of financial performance in accordance with IFRS.
CODELCO also presents certain ratios and margins that are derived using Adjusted EBITDA, including the
ratio of debt to Adjusted EBITDA, the Adjusted EBITDA coverage ratio and earnings to fixed charges (adjusted).
CODELCO believes that these ratios are widely used by investors to measure our performance. In the section titled

vii