Company: SQM
Filing Date: 2025-04-24
Form Type: 20-F
Source: 0000909037-25-000020
Chunk: 121

Company: CHEMICAL & MINING CO OF CHILE INC
Filing Date: 2025-04-24
Form: 20-F
Item: Item 4A
Chunk 121
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 The Salar de Atacama brine measured, indicated and inferred mineral resources, exclusive of reserves, of 2,254 million cubic meters, 1,435 million cubic meters and 1,614 million cubic meters at December 31, 2024, respectively, remained unchanged from the amounts at December 31, 2023 because the mineral resource exclusive of mineral reserve represents the resource in place after LoM, and none of the mineral resource declared in 2023 has been converted to mineral reserves. 
The information presented in the tables above for Salar de Atacama were validated by the following QPs:
Mr. Rodrigo Riquelme Tapia is a Mining Engineer. He is currently partner and General Manager of GeoInnova, located at Antonio Bellet 444, Of. 1301, Providencia, Metropolitan Region, Chile. He has worked as a mining engineer for more than 24 years, of which 18 have been focused on resource and reserve estimation topics. Mr. Riquelme has been an external consultant for SQM since 2018, and visited the site in 2019 and 2023. Mr. Riquelme is a QP as defined in subpart 1300 of Regulation S-K and is registered under No. 50 in the Public Registry of QPs in Mining Resources and Reserves, in accordance with the Law for QPs and its current regulation in Chile.
Dr. Juan Becerra is a geologist, with an MSc and PhD in geology, with more than 15 years of experience in exploration, regional geology, structural geology, modeling and estimation of Li, K and REE resources. He is a QP, as defined in subpart 1300 of Regulation S-K, and has been registered since 2023 under No. 0480 in the Public Registry of QPs in Mining Resources and Reserves, in compliance with the Law for QPs and its current regulation in Chile. He is also a member (No. 699) of the College of Geologists, and has participated in the evaluation of lithium projects and the preparation of technical reports following national (CH20235) and international (S-K1300, CRIRSCO) regulations, standards and codes. He has published and participated in multiple scientific contributions, and has also supervised undergraduate and postgraduate theses. Currently, he works as Superintendent of Geology at SQM Salar SpA, where he leads a multidisciplinary team of