The project aims to boost SQM's iodine and nitrate production.
The operator said 75% of mobile traffic on the metro uses 4G technology.
Insurance giant Chubb may face claims after the famous singer called off her show scheduled for Friday due to health reasons.
The Colombian credit provider hopes to win regulatory approval early next year to start operations mid-2018.
The limestone extraction project is focused on the production of magnesite and other minerals.
The Chilean P&C insurer has Carlos Escudero Segura at the helm.