The Gabriela Mistral, or Gaby, mine was a greenfield oxide copper project in remote northern Chile.
Each day, the solvent extraction and electrowinning (SX / EW) plant would produce some 430 metric tonnes of quality copper from the open pit mine. State-of-the art technology was used in all of the processing facilities, which included those for primary, secondary, and tertiary ore crushing; ore stockpiling; excavation and deposition of ripios (processed material that contains residual copper); acidification; leaching and automated electro winning cell house.
Codelco required that the site manager report directly to both Fluor management and the Codelco project manager. In addition, for every Fluor manager, from line manager to staff manager, there was a Codelco counterpart, enabling the development of relationships between the two companies. In order for there to be a "distinct entity" working on the project, an office was established in Santiago exclusively for project engineering. Standard procedures and practices were followed as the companies worked together in accordance with Codelco project execution requirements. The project was to be complete 24 months from the start of detail engineering in 1996, a demanding schedule, but one that would enable Codelco to start production to meet the needs of the market.