A direct comparison demonstrated to Hudbay Mineral's Contstancia operation that centre launders recovered more copper and molybdenum than radial launders. Courtesy of Metso Outotec Canada Inc.

Timing and scheduling problems are usually causes for concern, but Hudbay Minerals turned these issues into a study opportunity at its Constancia mine in Peru. It was an opportunity that the company and Metso Outotec could not afford to turn down, especially as it advanced the knowledge of froth-flotation management.