GR Engineering Services has executed a $275 million engineering, procurement and construction contract for the Yitirrti Project, a copper-silver-zinc development located approximately 144 kilometres southeast of Port Hedland in Western Australia.
The EPC agreement was signed with Venturex Sulphur Springs, a wholly owned subsidiary of Develop Global. Formerly known as the Sulphur Springs Project, the Yitirrti Project is now advancing steadily toward its first concentrate delivery, targeted for the June quarter of 2028.
GR Engineering Secures $275M Yitirrti EPC Contract
GR Engineering was initially named the preferred contractor for EPC work at the Yitirrti Project in June 2026. Early works and the ordering of long-lead items had already begun prior to the formal execution of the contract.
GR Engineering Managing Director Tony Patrizi said the company is pleased to be “working again with the Develop team.” He added that the project “further enhances GR Engineering’s reputation as the leading minerals processing EPC contractor in Australia across a broad range of commodities.”
Develop Global Managing Director Bill Beament described the awarding of the EPC contract to GR Engineering as “another major milestone” for the company’s path to production and cash flow at the Yitirrti Project by mid-2028.
Beament noted that GR Engineering “is the leader in its field and has done an outstanding job at Woodlawn, where it refurbished and upgraded the processing plant.” He said the Woodlawn plant “has already achieved steady-state throughput rates and is performing extremely well, particularly given the short time it has been operating.”
Yitirrti Processing Plant Targets 1.5Mtpa Capacity
The total capital cost for the Yitirrti Copper-Silver-Zinc Project is estimated at $450 million, which includes the processing plant. The EPC contract itself is valued separately at $275 million.
The processing plant has a nameplate annual capacity of 1.5 million tonnes and will produce separate copper-silver and zinc concentrates. Develop Global has organised offtake agreements with Trafigura covering both copper and zinc concentrates sourced from the Yitirrti Project.
Beament confirmed that the project is funded and offtake contracts are in place. “Construction and underground development at Yitirrti is already well advanced and long-lead items have been secured,” he said.
Construction Progresses Toward First Concentrate in 2028
Construction at the Yitirrti Project is progressing on schedule. Access roads and earthworks are advancing, while underground development is running ahead of the construction schedule.
The first concentrate from the project is expected to be delivered in the June quarter of 2028, marking the transition from construction into production for the copper-silver-zinc operation in Western Australia.
With the EPC contract now formally executed, GR Engineering will take on the central role of delivering the processing plant and associated infrastructure at the Yitirrti Project site.