BHP Group Limited — Regulatory Filings 2008

Monday 1 December 2008

Awarded Pilbara Construction Contract

Macmahon Holdings Limited (ASX:MAH) announced today that it had been awarded a contract for construction work at Port Hedland in Western Australia by BHP Billiton Iron Ore.

The work has an estimated contract value of $50 million and forms part of BHP Billiton Iron Ore’s recently announced Rapid Growth Project 5 (RGP5).

The contract involves preliminary construction work to facilitate dredging at Finucane Island, including:

• seawall construction including the placement of 750,000 cubic metres of armour rock; and - new containment ponds for the dredge material.

Chief Executive Officer, Nick Bowen, commented that the award of this contract demonstrates Macmahon’s strong position in the Pilbara iron ore region and its long association with BHP Billiton Iron Ore’s expansion projects.

“We look forward to executing this important piece of work on RGP5 as BHP Billiton continues to expand its iron ore operations in the Pilbara,” he said.

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Media Contact: Gareth Widger Group Public Affairs Manager Mobile: 0419 918 272 Investor Contact: Kavneet Elvin Manager Investor Relations Mobile: 0418 130 692

Macmahon is a leading contractor providing services to customers in both the mining and civil construction sectors. As a successful, rapidly growing public company Macmahon employs more than 3,700 people throughout Australia, New Zealand and Asia.