SQM’s thermo-solar salts, a mixture of sodium nitrate and potassium nitrate, are the right, natural mix for thermal storage and heat transfer at CSP plants. Annually, SQM produces around 1 million t of caliche ore and salar brines, two natural resources found in Northern Chile. Caliche is extracted from surface deposits in the Atacama Desert; derived products including sodium nitrate and iodine. The Salar Brines are pumped from underground brines in the Salar de Atacama (Atacama Salt Flat) after which they are deposited in large solar evaporation ponds to separate the desired elements.