Fluor Takes EPCM Reins on Sierra Gorda Fourth Grinding Line

Fluor Corporation has received full notice to proceed on its engineering, procurement and construction management contract for the Fourth Grinding Line Expansion at the Sierra Gorda copper-molybdenum mine in northern Chile, locking in the EPCM scope for one of the region's more closely watched brownfield upgrades.

SGSCM runs a large open-pit copper and molybdenum operation about 60 km south of Calama in Chile's Antofagasta Region. Under the approved flowsheet, a fourth processing line will join the existing concentrator, pairing a new primary crushing stage with high-pressure grinding roll technology, fine ore grinding circuits and flotation cells, plus the supporting infrastructure around them. Designed throughput climbs from roughly 130,000 t/d at present to 165,000 t/d once the new line runs. KGHM Polska Miedź and South32, the joint venture partners behind the asset, signed off on the expansion earlier this year. Payable output after the upgrade is forecast at about 195,000 t/y of copper, 6,000 t/y of molybdenum, 58,000 oz/y of gold and 1.7 Moz/y of silver - close to a 30% lift on a copper-equivalent basis. Site construction is penciled in for a 2027 start. Commenting on the award, Harish Jammula, who leads Fluor's Mining & Metals business, pointed to the contractor's familiarity with the asset from the original development and its record of capital-efficient delivery.

For equipment buyers and suppliers, an EPCM award of this type is effectively the starting gun for the package tendering cycle. Under Fluor's delivery model, individual supply packages - the primary crusher, the HPGR unit, flotation machines, slurry pumps, thickeners and the electrical and instrumentation scope - will be specified, pre-qualified and bid out on a timeline that has to converge on a 2027 construction start. That compresses the engineering and procurement window: vendors who already hold approvals with Fluor or with KGHM and South32 operations will move faster than newcomers starting qualification from zero. For procurement teams studying the project, the practical signals are clear: long-lead mechanical packages should be treated as priority items, delivery reliability and installed reference lists will outweigh marginal price differences, and buyers should expect competition for Chilean minerals-processing capacity to tighten as nearby copper expansions bid for the same fabrication slots and field-service crews. Suppliers on the outside of the frame should engage the EPCM contractor's procurement group early with documented brownfield installation experience, because retrofit work inside a running concentrator is precisely where Fluor's client will be least tolerant of schedule surprises.