PUBLICATION OF BOND PROSPECTUS

NEWS RELEASE, 9 OCTOBER 2020

NOT FOR DISTRIBUTION IN OR INTO OR TO ANY PERSON LOCATED OR RESIDENT IN THE UNITED STATES, ITS TERRITORIES AND POSSESSIONS, ANY STATE OF THE UNITED STATES OR THE DISTRICT OF COLUMBIA OR TO ANY U.S. PERSON

PUBLICATION OF BOND PROSPECTUS

The following prospectus has been approved by the Financial Conduct Authority ("FCA") and is available for viewing:

Prospectus dated 9 October 2020 for the issue of US$500 million 2.375 per cent Notes due 2030 issued by Antofagasta plc as Issuer.

The Prospectus has been filed with the FCA. The full document can be found at 

http://www.rns-pdf.londonstockexchange.com/rns/6925B_1-2020-10-9.pdf

A copy of the Prospectus has also been submitted to the National Storage Mechanism and will shortly be available at https://data.fca.org.uk/#/nsm/nationalstoragemechanism

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Prospectus may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Prospectus) only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Prospectus is not addressed. Prior to relying on the information contained in the Prospectus you must ascertain from the Prospectus whether or not you are part of the intended addressees of the information contained therein.

This announcement is not an offer, solicitation or sale of securities in the United States or any other state or jurisdiction, and there shall not be any offer, solicitation or sale of securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. The securities described in this announcement will only be offered in the United States to "qualified institutional buyers" as defined in Rule 144A under the U.S. Securities Act of 1933, as amended (the "Securities Act"), and outside the United States to non-U.S. persons in offshore transactions in accordance with Regulation S thereunder. The Notes have not been and will not be registered under the Securities Act, or under any state securities laws, and may not be offered or sold in the United States or to U.S. persons absent registration or an applicable exemption from the registration requirements. This information is for your internal use and may not be forwarded or redistributed to any other persons.

Your right to access this service is conditional upon complying with the above requirement.