What's Happening?
South32, a diversified mining company, has approved the final investment for the expansion of the Sierra Gorda joint venture in Chile. This decision follows a feasibility study that confirmed the potential for significant returns from the expansion of the existing
plant. The project will increase the processing capacity of the Sierra Gorda mine from 48 million tonnes per year to 60 million tonnes per year. This will be achieved through the installation of a fourth grinding line, along with expanded crushing and flotation capacity. The Sierra Gorda mine, located in the Antofagasta region of northern Chile, is a large open-pit copper mine in which South32 holds a 45% stake, with the remaining 55% held by KGHM Polska Miedź. The expansion is expected to begin production in the 2030 financial year, reaching full production by 2031.
Why It's Important?
The expansion of the Sierra Gorda mine is significant for the copper industry, as it is expected to increase the mine's average annual production by 30% in copper-equivalent terms. This includes 195,000 tonnes of copper, 6,000 tonnes of molybdenum, 58,000 ounces of gold, and 1.7 million ounces of silver. The project is also expected to reduce average operating unit costs by 10%, enhancing the mine's profitability. The investment of $725 million over the next few years is projected to deliver an internal rate of return of 20% at long-term copper prices of $5 per pound, or 23% at $6 per pound. This expansion not only strengthens South32's position in the copper market but also contributes to the global supply of this critical metal, which is essential for various industries, including electronics and renewable energy.
What's Next?
The Sierra Gorda expansion will be funded through operating cash flow and joint venture debt facilities. As the project progresses, stakeholders will be monitoring the development closely, particularly the impact on production costs and output. The expansion also opens up further growth opportunities, as the current Catabela pit remains open at depth, and the adjacent Catabela Northeast prospect has shown promising exploration targets. These developments could extend the life of the mine and further increase production capacity, providing long-term benefits to South32 and its partners.
