Holding(s) in Company

Antofagasta PLC
24 May 2007



For immediate release: 24 May 2007

Antofagasta plc


                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 ORD

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

An acquisition or disposal of voting rights: ( X )

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): ( )

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

AXA S.A. 25 Avenue Matignon, 75008 Paris and its group of companies

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

N/A

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

21 May 2007

6. Date on which issuer notified:

22 May 2007

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

5%

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               |                        |                        |
+------------------------+------------------------+------------------------+
|0045614                 |       48,446,364       |       48,446,364       |
+------------------------+------------------------+------------------------+


Resulting situation after the triggering transaction
+---------------------+---------+--------------------+-------------------+
|Class/type of shares |Number of|  Number of voting  |% of voting rights |
|                     | shares  |       rights       |                   |
|if possible using the+---------+---------+----------+---------+---------+
|ISIN CODE            | Direct  | Direct  | Indirect | Direct  |Indirect |
+---------------------+---------+---------+----------+---------+---------+
|0045614              |2,427,587|2,427,587|51,569,989|  0.25   |  5.23   |
+---------------------+---------+---------+----------+---------+---------+


B: Financial Instruments

Resulting situation after the triggering transaction
+--------------+--------------+--------------+--------------+--------------+
|Type of       |Expiration    |Exercise/     |Number of     |% of voting   |
|financial     |date          |Conversion    |voting rights |rights        |
|instrument    |              |Period/ Date  |that may be   |              |
|              |              |              |acquired if   |              |
|              |              |              |the instrument|              |
|              |              |              |is exercised/ |              |
|              |              |              |converted.    |              |
+--------------+--------------+--------------+--------------+--------------+
|     N/A      |              |              |              |              |
+--------------+--------------+--------------+--------------+--------------+


Total (A+B)
+------------------------------------+------------------------------------+
|      Number of voting rights       |         % of voting rights         |
+------------------------------------+------------------------------------+
|             53,997,576             |                5.48                |
+------------------------------------+------------------------------------+


9. Chain
Name of the Company/Fund                        Number of      % of issued
                                                Shares         share
                                                               capital
AXA Sun Life plc                                   143,700       0.01458
(fmly Axa Equity & Law life Assurance 
Society plc)
                    Direct

AXA UK Investment Co ICVC                           30,000       0.00304
Extra Income Fund
                   Indirect

AXA UK Investment Co ICVC                        1,000,000       0.10143
UK Equity Income Fund
                   Indirect

PPP Healthcare Group plc                            13,846       0.00140
                    Direct

Sun Life Assurance Society Plc                      60,000       0.00609
                    Direct

AXA Insurance UK                                   189,625       0.01923
                    Direct

AXA Financial, Inc                              49,896,328       5.06122
                   Indirect

AXA Colonia Konzern                                 67,815       0.00688
                   Indirect

AXA France                                          43,163       0.00438
                   Indirect

AXA Rosenberg                                      405,683       0.04115
                   Indirect

AXA Financial, Inc                                 111,000       0.01126
                   Indirect

Sun Life Pension Management Ltd                      7,000       0.00071
                    Direct

Sun Life Unit Assurance Ltd                         97,096       0.00985
LTAV UK Equity
                    Direct

Sun Life Unit Assurance Ltd                        167,400       0.01698
ABL High Alpha
                    Direct

Sun Life Unit Assurance Ltd                         69,642       0.00706
FTSE All Share Tracker
                    Direct

Sun Life Pensions Management                       436,428       0.04427
LTAV UK Equity
                    Direct

Sun Life Pensions Management                       770,700       0.07818
ABL High Alpha
                    Direct

Sun Life Pensions Management                       331,873       0.03366
FTSE All Share Tracker
                    Direct

Framlington onshore privte clients                  16,000       0.00162
                   Indirect

AXA Winterthur                                     100,877       0.01023
                    Direct

SUN LIFE WITH PROFIT Transition                     35,400       0.00359
                    Direct

AXA SUN LIFE WITH PROFIT Transition                  4,000       0.00041
                    Direct

                 Total Direct                      2,427,587     0.24624
                Total Indirect                    51,569,989     5.23098
                     TOTAL                        53,997,576     5.47722



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:

N/A

14. Contact name:

Terry Marsh

15. Contact telephone number:

020 7003 2637




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