BHP Billiton hopes to begin pre-construction piling at Port Hedland this Friday, the first step in its $10 billion outer harbour project.
The two-month operation will install three test piles along the route of the proposed outer harbour jetty.
Five other steel piles will be installed to support survey equipment, with the entire project working between 1.7km and 31.5km off the Port Hedland coast.
Earlier this year the company approved close to $1 billion in pre-commitment funding for the Outer Harbour and revised plans for a fly-in fly-out camp to house construction workers.
The company initially proposed a 6,000-person camp but after its rejection the number was revised to 2,000 with the option to add a further 2,000.
BHP’s board is expected to give total approval to the Outer Harbour Development later this year.