Annual Information Update

Antofagasta PLC
06 June 2006



                                Antofagasta plc

                           ANNUAL INFORMATION UPDATE

London, 6 June 2006

This annual information update is made by Antofagasta plc (the 'Company') in
accordance with Prospectus Rule 5.2. The information detailed below has been
published or made available to the public over the previous 12 months.

The information referred to below was correct at the time it was published but
may now be out of date.

A. Announcements made via a Regulatory Information Service

The following announcements were made via a Regulatory Information Service:

Date                  Description of Announcement

25 May 2006           Quarterly Financial Report Q1 - 2006
22 May 2006           Correction of Explanation of Special Business at AGM
16 May 2006           Dividends - amount payable in sterling
9 May 2006            Annual Report and Financial Statements and Notices of 
                      Meetings
3 May 2006            Quarterly Production Report Q1 2006
28 April 2006         Antofagasta reaches 95.97% of Tethyan and closes takeover
                      offer
28 April 2006         Tethyan takeover offer reaches compulsory acquisition
                      threshold
20 April 2006         Antofagasta declares takeover offer for Tethyan 
                      unconditional
18 April 2006         Update regarding recommended cash offer for Tethyan
4 April 2006          Update regarding recommended cash offer for Tethyan
28 March 2006         Update regarding recommended cash offer for Tethyan
24 March 2006         Antofagasta increases cash takeover offer for Tethyan
14 March 2006         Full year results 2006
8 March 2006          Update regarding cash offer for Tethyan
27 February 2006      Antofagasta reaches 2.19% interest in Tethyan
24 February 2006      Purchase of 8.94% interest in Tethyan
14 February 2006      Cash offer for Tethyan
30 January 2006       Notification of major interests in shares
25 January 2006       Quarterly Production Report Q4 2005
5 January 2006        Director/PDMR shareholding
30 December 2005      Director/PDMR shareholding
23 December 2005      Joint venture with Tethyan Copper Company Limited
26 October 2005       Quarterly Production Report Q3 2005
13 October 2005       Director/PDMR shareholding
5 October 2005        Director/PDMR shareholding
13 September 2005     Interim Results Announcement
13 September 2005     IFRS news release
19 August 2005        Honorary President
27 July 2005          Quarterly production Report Q2 2005
14 June 2005          AGM statement

Copies of these announcements can be obtained from the London Stock Exchange
website, www.londonstockexchange.com/marketnews, and from the investor relations
pages of the Company's website, www.antofagasta.co.uk.

B. Documents filed at Companies House

The following documents were filed with the Registrar of Companies in England
and Wales on or around the dates indicated:

Date                Document Filed

23 March 2006       Form 288c, director's particulars changed
23 March 2006       Form 288c, director's particulars changed
8 August 2005       Form 363a, return made up to 19 June 2005
23 June 2005        Group accounts made up to 31 December 2004
22 June 2005        Resolution disapplying pre-emption rights dated 14 June 2005
20 June 2005        Form 288a, appointment of director
10 June 2005        Form 288a, appointment of director

Copies of these documents are available to download from the Companies House
website, www.companieshouse.gov.uk, or can be obtained from Companies House,
Crown Way, Maindy, Cardiff CF14 3UZ.

C. Documents submitted to the Financial Services Authority

The following documents below were filed to the Financial Services Authority on
or around the dates indicated:

Date                 Document

22 May 2006          Letter Correcting Explanation of Special Business
9 May 2006           Proposed Articles of Association
9 May 2006           Annual Report and Accounts 2005 including Notice of Annual 
                     General Meeting and Notices of Class Meetings

With the exception of the proposed revised articles of association, all these
documents were sent to shareholders on or around the same date.

These documents can be viewed at the Document Viewing Facility situated at The
Financial Services Authority, 25 North Colonnade, Canary Wharf, London E14 5HS.
Copies of these documents can also be obtained from the financial information
and investor relations pages of the Company's website, www.antofagasta.co.uk.

D. Documents lodged with the Australian Stock Exchange In Australia

The following documents were submitted to the Australian Stock Exchange by the
Company or its wholly-owned subsidiary Atacama Copper Pty Limited on or around
the dates indicated:

Date                   Document

9 May 2006             Letter to Shareholders re T/O Bid by Atacama Copper P/L
1 May 2006             Change in substantial holding
28 April 2006          Antofagasta Offer Closes
28 April 2006          Tethyan takeover offer reaches compulsory acquisition
27 April 2006          Change in substantial holding
26 April 2006          Change in substantial holding
24 April 2006          Change in substantial holding
21 April 2006          Change in substantial holding
20 April 2006          Notice of Status of Conditions
20 April 2006          Third Supplementary Bidder's Statement
20 April 2006          Notice declaring offer free from all defeating conditions
20 April 2006          Antofagasta reaches 51.77% interest-Offer Unconditional
20 April 2006          Change in substantial holding
19 April 2006          Change in substantial holding
18 April 2006          Update on Recommended Cash Offer for Tethyan
12 April 2006          Change in substantial holding
10 April 2006          Change in substantial holding
7 April 2006           Change in substantial holding
6 April 2006           Change in substantial holding
5 April 2006           Change in substantial holding
3 April 2006           Variation of Offer/2nd Supplementary Bidder's Statement
31 March 2006          Change in substantial holding
30 March 2006          Change in substantial holding
28 March 2006          Update: Recommended Cash Offer
24 March 2006          Supplementary Bidder's Statement & Associated Notices
24 March 2006          Antofagasta increase cash takeover offer for Tethyan
15 March 2006          Atacama Copper Pty Limited T/O - Fulfilment of Condition
13 March 2006          Notice of despatch of Bidders Statement by Atacama
10 March 2006          Change in substantial holding
10 March 2006          Atacama Copper Pty Limited - Bidders Statement
08 March 2006          Notice under section 633(2)(b)
08 March 2006          Update re Antofagasta's cash takeover offer for TYC
27 February 2006       Becoming a substantial holder
24 February 2006       Becoming a substantial holder
15 February 2006       Recommended Cash Takeover Offer

Copies of these documents can be obtained from the Australian Stock Exchange
website www.asx.com.au.

Enquiries                                      Issued by

Antofagasta plc                                Bankside Consultants
Tel: [phone]                          Tel: [phone]
www.antofagasta.co.uk                                                

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

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







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