In 2016, Minera Escondida Limitada requested a diagnostic service to include reviewing the current operation status of the 9″ concentrate pipeline from OGP1 Plant to VS4 at Puerto Coloso. The evaluation and comparison of operational parameters (maximum pressure, minimum pressure, pressure losses, among others) were conducted in relation to those obtained during the commissioning phase carried out in 2015. Similarly, the same review and evaluation activity was conducted for the current operation status of the 6″ slurry pipeline.