The expansion plan includes enlarging the Constancia pit — operational since 2014 —, installing new processing equipment, and increasing the height of the tailings dam wall. Details of the project are contained in the fourth technical support report (ITS) tied to Constancia’s environmental impact study. Hudbay expects construction to begin in the fourth quarter of 2025.
The report outlines five key upgrades designed to optimize operations. These include the installation of a third ball mill, two crushers, and advanced ore-sorting machinery to handle harder ore currently being mined. Importantly, these upgrades will not exceed the mine’s approved daily processing capacity of 85,000 tonnes. The project will also retain Constancia’s current operational timeline, with mining activities expected to continue through 2030.
Over the past two years, Constancia has faced production challenges. According to data…
