Southern Copper — Oct 21, 2024 release

​ Project update : As of September 30, 2024, the Company had generated more than 422 jobs, 355 of which were filled with local applicants. To the fullest extent possible, we intend to fill the 9,000 jobs estimated to be required during Tia Maria ’ s construction with workers from the Islay province. When we start operations in 2027, the project will generate 600 direct jobs and 4,800 indirect jobs . ​ In the coming months, we expect to build roads and access points; train operators; update the topographic network; install and delimit properties along the living fence; install a temporary camp; and begin earthmoving activities. In 2025, we expect construction to begin. ​ Los Chancas - Apurimac: This greenfield project, located in Apurimac, Peru, is a copper and molybdenum porphyry deposit. Current estimates of indicated copper mineral resources are 98 million tons of oxides with a copper content of 0.45% and 52 million tons of sulfides with a copper content of 0.59%. The Los Chancas project envisions an open-pit mine with a combination of concentrator and SX-EW processes that are expected to produce 130,000 tons of copper and 7,500 tons of molybdenum annually. The estimated capital investment is $2,600 million and the project is expected to begin operating in 2031. We continue to engage in social and environmental improvements for the local communities and are working on the project ’ s environmental impact assessment. ​ 3Q24 www.southerncoppercorp.com Page 3 of 12 ​ ​ ​ ​ ​ ​ ​ ​ ​ THIRD QUARTER AND NINE MONTHS 2024 RESULTS SOUTHERN COPPER ​ ​ ​ ​ ​ Project update : In coor