Company: SQM
Filing Date: 2025-04-24
Form Type: 20-F
Source: 0000909037-25-000020
Chunk: 109

Company: CHEMICAL & MINING CO OF CHILE INC
Filing Date: 2025-04-24
Form: 20-F
Item: Item 4A
Chunk 109
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Ps responsible for the Mineral Reserves.
(8)The QP is not aware of any environmental, permitting, legal, title, taxation, socioeconomic, marketing, political or other relevant factors that could materially affect the Mineral Reserve estimate that are not discussed in this TRS.
(9)The development of the Pampa Orcoma project was postponed without any changes to the information reported as of December 31, 2022.
Pampa Orcoma—Summary of Mineral Resources Exclusive of Mineral Reserves at the End of the Fiscal Year Ended December 31, 20241,2,3,4,5,6,7

                                             Resources                                                                                                                     
                                             Amount(Mt)                         NitrateGrade(weight %)                Iodine Grade(ppm)   Cut-offgrade1,2                  
Measured mineral resources                   —                                             —                                          —   Nitrates 3.0%, Iodine 300 ppm    
Indicated mineral resources                  18                                          7.4                                        457                                    
Measured + Indicated mineral resources       18                                          7.4                                        457                                    
Inferred mineral resources                   —                                             —                                          —                                    
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(1)Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the Mineral Resource will be converted into Mineral Reserves upon the application of modifying factors.
(2)Mineral Resources are reported as in-situ and exclusive of Mineral Reserves, where the estimated Mineral Reserve without processing losses during the reported LOM was subtracted from the Mineral Resource inclusive of Mineral Reserves.
(3)Comparisons of values may not add due to rounding of numbers and the differences caused by use of averaging methods.
(4)The units “Mt”, “ppm” and %, refers to million metric tons, parts per million and percent by weight, respectively.
(5)The Mineral Resource estimate considers a cut-off grade of 300 ppm for iodine and 3.0% for nitrates, based on accumulated cut-off iodine grades and operational average grades, as well as the cost and medium and long term prices forecast for prilled iodine production.
(6)Marco Fazzi, Freddy Ildefonso and Gino Slanzi are the QPs responsible for the Mineral Resources.
(7)The development of the Pampa Orcoma project was postponed without any changes to the information reported as of December 31, 2022.
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Pampa Blanca—Summary of Mineral Reserves