Antofagasta Investor Day

N.DD.CC EXPLORATION STRATEGY 120 crow British Columbia Arizona Regional Offices Mines Projects Main prospective belt 120°00″W 90°00″W Twin Metals 90°00″W Toronto Lima Santiago 6000W Centinela Pelambres 60°00″W N.D.D.00 S.00.00 TARGET CRITERIA Copper, preferably with by-products Over 50ktpa of copper for more than 10 years Geographic focus the Americas: Chile, Peru, Canada and USA Looking for M&A opportunities and early stage projects ● ● FOCUS Proven and favourable jurisdictions in the Americas Advanced projects in Chile North America run from Toronto Office: British Columbia and Arizona-Nevada, greenfield and JVs Peru and Chile: Greenfield in costal (Mina Justa, Cachorro) and Miocene belts (long term and massive potential) Chile: Brownfield in Eocene belts in Centinela district ● ● Monitoring copper opportunities in South America Replacing reserves or better Using new technology and operating improvements to find deeper resources 30

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