COMPLETION OF LOS PELAMBRES EXPANSION FINANCING

NEWS RELEASE, 4 APRIL 2019

COMPLETION OF LOS PELAMBRES EXPANSION FINANCING

100% OF PROJECT COST DEBT FINANCED

Today Antofagasta plc's subsidiary Antofagasta Minerals SA announced the completion of the financing of the Los Pelambres Expansion Project with the full $1.3 billion project cost being debt financed by Los Pelambres.

Ivan Arriagada, the CEO of Antofagasta plc, commented, "I am pleased the expansion of Los Pelambres has been financed on favourable terms with the support of a strong group of lenders. This demonstrates the significant financing capacity of the Group and will enhance the already strong returns of the project".

The debt financing consists of two tranches, one of $425 million with a 10-year term from Japan Bank for International Cooperation (JBIC) and the other of $875 million with 7-year term from a consortium of international banks (Mizuho Bank, Export Development Canada, Scotiabank, Sumitomo Mitsui Banking Corporation (SMBC) and Bank of China). The second tranche received a Green Evaluation from S&P Global Ratings making Los Pelambres the first mining company in the world to receive this evaluation from S&P.

 Further details of the financing can be found at www.aminerals.cl.