Worley awarded engineering contract for Donlin Gold gas pipeline in Alaska

Worley has been selected to provide detailed engineering design for a 508-kilometre natural gas pipeline serving the proposed Donlin Gold mine in Alaska. The pipeline will traverse remote mountainous terrain to supply fuel from Cook Inlet, supporting the project's bankable feasibility study scheduled for completion in 2027.

Worley Alaska has been awarded a contract for detailed engineering design services for a natural gas pipeline that will supply fuel to the Donlin Gold project, according to an official announcement. The pipeline, spanning 508 kilometres from Cook Inlet to the proposed mine site, will traverse remote and mountainous terrain requiring specialised Arctic and sub-Arctic design approaches.

Donlin Gold is a development-stage gold project located in Alaska's Kuskokwim Gold Belt, currently progressing through a bankable feasibility study scheduled for completion in 2027. Worley is a global engineering and project delivery firm with over 60 years of operational experience in Alaska. The scope of work includes pipeline routing and engineering, gas handling and control systems, and integration across civil, environmental, and permitting disciplines. Constructability planning and execution strategies are tailored to the region's challenging environmental conditions.

The pipeline is intended to provide reliable energy supply for on-site operations should the project proceed to development. This development matters for the North American mining and energy infrastructure sector as large-scale greenfield projects in remote regions require specialised engineering approaches to address logistical and environmental constraints. The pipeline represents critical enabling infrastructure for a project that, if sanctioned, would rank among the largest gold mines in the United States.

For engineering and construction firms, the contract demonstrates continued investment in resource development infrastructure in Alaska, with implications for suppliers capable of operating in extreme environments. Stakeholders including mining developers, pipeline contractors, and regional communities stand to benefit from project advancement through the feasibility phase.