Global surveysSurvey of operating practice and trends in copper solvent extractionCopper solvent extraction have regularly been carried out since 1997. This paper reports and evaluates the outcomes of the ninth surveySurvey in this series, based on individual plant operating data for 2024. Trends in feed and electrolyteElectrolyte compositions, and consequent selection of extractant and diluentDiluent are reviewed, with their corresponding impacts on copper recoveryCopper recovery and operating costsOperating Cost. Differences in operating practices in different parts of the world are compared. Strategies for optimizationOptimization and maximizing copperCopper transfer and copper productionCopper production with changing feed compositions during life of mineLife of mine and with regional differences in mineralogyMineralogy are discussed. The evolution of extractant formulations and trends in equipmentEquipment designDesign and configurationsConfiguration are also assessed.