Los Pelambres Shipments of Copper Concentrates

Antofagasta PLC 14 January 2000 Antofagasta plc Registered Office TELEPHONE: 0171 374 8091 PARK HOUSE TELEX: 8954 4284 ANRAIL G 16 FINSBURY CIRCUS FACSIMILE: 0171 628 3773 LONDON EC2M 7AH REGISTERED IN LONDON No. 1627889 First Shipments of Copper Concentrates from Los Pelambres LONDON: Friday, 14 January 2000 - Antofagasta plc (ANTO.L), the UK-listed mining group based in Chile, announces that shipments of copper concentrates began yesterday from its newly built Punta Chungo port facility at Los Vilos. The initial shipment of 10,000 tonnes is destined for Japanese smelters. A second shipment of 25,000 tonnes is scheduled for 20 January. Production of concentrates at the US$1.36 billion Los Pelambres mine began at the end of October 1999. Los Pelambres is expected to reach full production by March 2000 and will produce thereafter an average of 271,000 tonnes of copper in concentrates in the first five years and 246,000 tonnes per year over the 30-year mine life. Antofagasta holds a 60% equity interest in the mine and the remaining 40% is held by two consortia of Japanese industrial groups, comprising Nippon Mining and Metals Co. Ltd, Marubeni Corporation and Mitsui and Co. Ltd. (25%) and Mitsubishi Materials Corporation and Mitsubishi Corporation (15%). Antofagasta has a current market capitalisation of approximately £920 million and in addition to mining operations, its principal activities include rail and road transportation and water distribution. It also holds a 33.6% investment in Quinenco S.A., a diversified industrial and financial group operating in Latin America and listed in ADR form on the New York Stock Exchange. Enquiries: Antofagasta Philip Adeane, Managing Director Email: itrevor@antofagasta.co.uk Hussein Barma, Chief Financial Officer hbarma@antofagasta.co.uk Neil Herbert, Financial Controller nherbert@antofagasta.co.uk Tel: +44 171 374 8091 Issued By: Keith Irons Email: keith@bankside.com Bankside Consultants Limited Tel: +44 171 220 7477

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