Antofagasta PLC — AGM Information 2012

Mar 12, 2012

All Correspondence to: Computershare Investor Services PLC The Pavilions, Bridgwater Road Bristol, BS99 6ZY Tel: +44(0) 870 702 0159

Shareholder Reference Number

Notice of Availability - Annual Report and Notice of Annual General Meeting

Kindly Note: This form is issued only to the addressee(s) and is specific to the unique designated account printed hereon. This personalised form is not transferable between different (i) account holders; or (ii) uniquely designated accounts. Antofagasta plc and Computershare Investor Services PLC accept no liability for any instruction that does not comply with these conditions.

Important - please read carefully

You can now access the 2011 Annual Report of Antofagasta plc and the notice of the 2012 Annual General Meeting of Antofagasta plc, by visiting this website:

www.antofagasta.co.uk

The Annual Report and Notice of Annual General Meeting can be accessed from the top toolbar on the website by selecting 'Download'. For the Annual Report, select 'Annual Reports' and then '2011'. For the Notice of Meeting, select 'Notice of Meeting' and then '2012'.

Would you like to receive email notification when documents and information are made available via a website?

By providing your email address you will receive notice by email advising you when and how to access documents and information from Antofagasta plc via a website.

Please submit your email address by visiting the Computershare Investor Centre website:

www.investorcentre.co.uk/ecomms

SRN:	! YOUR SHAREHOLDER REFERENCE NUMBER (SRN) IS IMPORTANT, PLEASE KEEP IT IN A SAFE PLACE.

Computershare Investor Services PLC is authorised and regulated by the Financial Services Authority, Registered Office: 25 The North Colonnade, Canary Wharf, London E14 5HS. Computershare Investor Services PLC is registered in England & Wales, Company No. 3498808, Registered Office: The Pavilions, Bridgwater Road, Bristol BS13 8AE.