Holding(s) in Company

Antofagasta PLC
22 March 2007



                                Antofagasta plc

                   Notification of Major Interests in Shares

London, 22 March 2007

Antofagasta plc ('Antofagasta') has received notifications in relation to the
Luksic family's interests in shares of Antofagasta from the E. Abaroa Foundation
and from Mr. Jean-Paul Luksic.

These notifications have been received pursuant to the Transparency Directive's
transitional provision 7, and the information contained therein appears in this
announcement below in accordance with the Transparency Directive's transitional
provision 8.

There have been no changes in the shareholdings or voting rights in Antofagasta
of either the E. Abaroa Foundation or of Mr. Jean-Paul Luksic since the
announcement made on 20 June 2006 following the notifications received after the
4-for-1 bonus issue by Antofagasta on 19 June 2006.


Enquiries                                        Issued by

Antofagasta plc                                  Bankside Consultants

Tel: [phone]                            Tel: [phone]

www.antofagasta.co.uk


Desmond O'Conor                                  Keith Irons                                     
Eail: [e-mail]                  Email: [e-mail]                              

Hussein Barma                                    Oliver Winters
Email: [e-mail]                  Email: [e-mail]


TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached:

ANTOFAGASTA PLC

2. Reason for the notification  (please tick the appropriate box or boxes)


An acquisition or disposal of voting rights:  (  )

An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached:  (  )

An event changing the breakdown of voting rights:  (  )

Other (please specify):    (X)

TRANSPARENCY DIRECTIVE TRANSITIONAL PROVISION 7

3. Full name of person(s) subject to the notification obligation:

E. ABAROA FOUNDATION

4. Full name of shareholder(s) (if different from 3.):

METALINVEST ESTABLISHMENT

KUPFERBERG ESTABLISHMENT

5. Date of the transaction (and date on which the threshold is crossed or
reached if different):

N/A

6. Date on which issuer notified:

21 MARCH 2007

7. Threshold(s) that is/are crossed or reached:

66%

8. Notified details:

A: Voting rights attached to shares

Situation previous to the Triggering transaction

Class/type of shares                        Number of Shares               Number of Voting Rights
if possible using the ISIN CODE

Ordinary                                      597,913,930                        597,913,930

Preference                                     1,882,396                         188,239,600



Resulting situation after the triggering transaction

Class/type of shares               Number of    Number of voting rights      % of voting rights
                                    shares

if possible using the ISIN CODE     Direct       Direct       Indirect       Direct      Indirect

Ordinary                               -            -        597,913,930       -          50.42%

Preference                             -            -        188,239,600       -          15.87%



B: Financial Instruments



Resulting situation after the triggering transaction

Type of financial    Expiration date      Exercise/ Conversion Number of voting      % of voting rights
instrument                                  Period/ Date       rights that may be
                                                               acquired if the
                                                               instrument is
                                                               exercised/ converted.


        N/A



Total (A+B)


Number of voting rights                                 % of voting rights

      786,153,530                                             66.29%



9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:

EACH OF METALINVEST ESTABLISHMENT AND KUPFERBERG ESTABLISHMENT IS A CONTROLLED
UNDERTAKING OF THE E. ABAROA FOUNDATION.

Proxy Voting:

10. Name of the proxy holder:

N/A

11. Number of voting rights proxy holder will cease to hold:

N/A

12. Date on which proxy holder will cease to hold voting rights:

N/A

13. Additional information:

THE 597,913,930 ORDINARY SHARES AND 1,882,396 PREFERENCE SHARES HELD INDIRECTLY
BY THE E. ABAROA FOUNDATION REPRESENT APPROXIMATELY 60.65% OF THE VOTING RIGHTS
ATTACHING TO THE ORDINARY SHARES AND 94.12% OF THE VOTING RIGHTS ATTACHING TO
THE PREFERENCE SHARES.

THE FOLLOWING SHARES ARE HELD DIRECTLY BY METALINVEST ESTABLISHMENT (WHICH,
TOGETHER, REPRESENT 58.04% OF THE TOTAL NUMBER OF VOTING RIGHTS OF THE COMPANY):

  * 500,000,000 ORDINARY SHARES, CARRYING 500,000,000 VOTING RIGHTS
(REPRESENTING APPROXIMATELY 50.72% OF THE VOTING RIGHTS ATTACHING TO THE
ORDINARY SHARES AND 42.16% OF THE TOTAL NUMBER OF VOTING RIGHTS OF THE COMPANY);
AND

  * 1,882,396 PREFERENCE SHARES, CARRYING 188,239,600 VOTING RIGHTS
(REPRESENTING 94.12% OF THE VOTING RIGHTS ATTACHING TO THE PREFERENCE SHARES AND
15.87% OF THE TOTAL NUMBER OF VOTING RIGHTS OF THE COMPANY).

KUPFERBERG ESTABLISHMENT DIRECTLY HOLDS 97,913,930 ORDINARY SHARES, CARRYING
97,913,930 VOTING RIGHTS (REPRESENTING APPROXIMATELY 9.93% OF THE VOTING RIGHTS
ATTACHING TO THE ORDINARY SHARES AND 8.26% OF THE TOTAL NUMBER OF VOTING RIGHTS
OF THE COMPANY).

THIS NOTIFICATION IS MADE PURSUANT TO THE TRANSPARENCY DIRECTIVE'S TRANSITIONAL
PROVISION 7; THERE HAS BEEN NO CHANGE IN THE SHAREHOLDINGS AND VOTING RIGHTS TO
WHICH THIS NOTIFICATION RELATES SINCE 19 JUNE 2006.

14. Contact name:

DR KARL HIER

15. Contact telephone number:

+ 423 235 8181


TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached:

ANTOFAGASTA PLC

2. Reason for the notification  (please tick the appropriate box or boxes)


An acquisition or disposal of voting rights:  (  )

An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached:  (  )

An event changing the breakdown of voting rights:  (  )

Other (please specify):    (X)

TRANSPARENCY DIRECTIVE TRANSITIONAL PROVISION 7

3. Full name of person(s) subject to the notification obligation:

JEAN-PAUL LUKSIC

4. Full name of shareholder(s) (if different from 3.):

AUREBERG ESTABLISHMENT

5. Date of the transaction (and date on which the threshold is crossed or
reached if different):

N/A

6. Date on which issuer notified:

21 MARCH 2007

7. Threshold(s) that is/are crossed or reached:

3%

8. Notified details:

A: Voting rights attached to shares

Situation previous to the Triggering transaction

Class/type of shares                        Number of Shares               Number of Voting Rights

if possible using the ISIN CODE

Ordinary                                       41,963,110                         41,963,110



Resulting situation after the triggering transaction

Class/type of shares               Number of    Number of voting rights      % of voting rights
                                    shares
if possible using the ISIN CODE     Direct       Direct       Indirect       Direct      Indirect

Ordinary                               -            -        41,963,110        -          3.54%



B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial    Expiration date      Exercise/ Conversion Number of voting      % of voting rights
instrument                                  Period/ Date       rights that may be
                                                               acquired if the
                                                               instrument is
                                                               exercised/ converted.


        N/A



Total (A+B)


 Number of voting rights                                 % of voting rights

       41,963,110                                              3.54%



9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:

AUREBERG ESTABLISHMENT IS A CONTROLLED UNDERTAKING OF JEAN-PAUL LUKSIC.

Proxy Voting:

10. Name of the proxy holder:

N/A

11. Number of voting rights proxy holder will cease to hold:

N/A

12. Date on which proxy holder will cease to hold voting rights:

N/A

13. Additional information:

THE 41,963,110 ORDINARY SHARES HELD DIRECTLY BY AUREBERG ESTABLISHMENT, AND
INDIRECTLY BY JEAN-PAUL LUKSIC, REPRESENT APPROXIMATELY 4.26% OF THE VOTING
RIGHTS ATTACHING TO THE ORDINARY SHARES.

THIS NOTIFICATION IS MADE PURSUANT TO THE TRANSPARENCY DIRECTIVE'S TRANSITIONAL
PROVISION 7; THERE HAS BEEN NO CHANGE IN THE SHAREHOLDING AND VOTING RIGHTS TO
WHICH THIS NOTIFICATION RELATES SINCE 19 JUNE 2006.

14. Contact name:

DR KARL HIER

15. Contact telephone number:

+ 423 235 8181


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