Fluor granted notice to proceed for Sierra Gorda fourth grinding line expansion in Chile

Key highlights
  • Fluor received full notice to proceed under its EPCM contract with Sierra Gorda (SGSCM).
  • Fluor will recognize the undisclosed contract value in the third quarter of 2026.
  • The brownfield expansion adds a fourth process line—new primary crusher, high-pressure grinding roll, fine ore grinding, flotation and support facilities.
  • The concentrator’s capacity is designed to increase from ~130,000 to 165,000 tonnes per day, with construction expected to start in 2027.
Related project For subscribers
Milestones, plant data, involved companies (owners, investors, licensors, contractors) and news — kept up to date.
Sierra Gorda Fourth Grinding Line Expansion, Chile · Chile
Under Construction
2024-06
2026-07-01
2026-10
Commissioning & Start-up · expected date for subscribers
Operational / Completed · expected date for subscribers

Notice to proceed

Fluor has received full notice to proceed under its engineering, procurement and construction management contract with Sierra Gorda Sociedad Contractual Minera (SGSCM) for the Fourth Grinding Line Expansion Project in Chile. Fluor will recognize the undisclosed contract value in the third quarter of 2026.

Project scope and location

The brownfield expansion, located about 60 kilometres south of Calama in Chile’s Antofagasta Region where SGSCM operates a large-scale open-pit copper-molybdenum mine, will add a fourth process line. Works include a new primary crusher, a high-pressure grinding roll crusher, fine ore grinding, flotation and associated support facilities.

Capacity and schedule

The project is designed to increase the concentrator’s ore-processing capacity from approximately 130,000 to 165,000 tonnes per day. Construction activities are expected to start in 2027.

Contractor statement

Fluor’s Mining & Metals president Harish Jammula said the company will apply its knowledge of the operation and global project delivery expertise to support the expansion and deliver a capital-efficient solution for the client.

Source: Fluor

chemXplore Weekly

The week’s project milestones and project news from the chemical industry, free every Wednesday.

Free. One email a week. Unsubscribe any time.

Related articles

12 August 2026
Boliden: Laver concession upheld after appeals rejected

Government rejected appeals, keeping the Laver concession intact; the deposit could double Sweden’s copper output and boost Europe’s copper self-sufficiency by about 10%.

8 June 2026
Aurubis Italia first site in Italy awarded The Copper Mark

Avellino rod plant becomes first in Italy to gain The Copper Mark, completing certification of all four rod plants and expanding verified coverage across the group's production network.

2 September 2025
Boliden Granted Mining Concession for Laver Deposit

The Swedish Mining Authority approved a concession for copper, gold, silver, and molybdenum extraction at Laver. Further exploration and permits are needed before investment.

9 December 2025
Fluor Secures Contract for Teck's Highland Valley Copper Mine Extension

The project extends the mine's life to 2046, involving upgrades to systems and facilities, creating 2,900 local jobs during construction.