MACMAHON HOLDINGS LIMITED — Capital/Financing Update 2012

Jun 20, 2012

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21 June 2012

Macmahon awarded $220m contract for Great Northern Highway – Port Hedland

Macmahon Holdings Ltd (ASX: MAH) has been awarded a $220 million design and construct contract, for the Great Northern Highway Realignment – Port Hedland.

Awarded by the Western Australian Government, the project will involve the establishment of approximately eight kilometres of new road and a major interchange at the Broome turn-off (Port Hedland Road).

Other features of the design include: a new road bridge over the BHP Billiton Iron Ore rail line, a low level bridge at South Creek and the establishment of various intersections including access to South Hedland, the Wedgefield industrial area and proposed development areas. The works will include road embankments across low-lying areas and associated drainage to maintain tidal flows.

The project, funded by the Federal Government’s Nation Building 1 Program and the State Government, will see Macmahon utilise a Western Australian workforce, subcontractors and suppliers in its delivery.

Macmahon Chief Executive Officer Nick Bowen said Macmahon was continuing to deliver important infrastructure which benefits communities and industry across Australia.

“The Great Northern Highway Realignment further builds on Macmahon’s long-standing and mutually successful relationship with Main Roads WA,” Mr Bowen said.

“We are already maintaining the 2276 km road network across the Pilbara through the Main Roads WA Integrated Service Agreement and as we finish construction of the Great Eastern Roe Highway Interchange, we have the people ready to deliver this next important link.

“Macmahon’s strong tradition of delivering critical infrastructure across regional Australia is continued through the Great Northern Highway Realignment and importantly it will improve the safety for all road users in the region.”

Scheduled for completion in mid-2014, the project is expected to bolster road safety through reduced road-train conflicts with commuter traffic and better access to new port and harbour areas.

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For further information, please contact:

Investors

Tracy Lynch General Manager Investor Relations +61 467 795 335

Media Stuart McLagan Group Communications Manager +61 458 755 117

About Macmahon

Macmahon is a leading Australian contract mining and construction company with major projects throughout Australia, in New Zealand, Asia, Mongolia and Africa.

An ASX/S&P 200 company, Macmahon has played a major role in the delivery of many of Australia’s largest multi-disciplinary mining and construction projects throughout its 49 year history.

Directly employing more than 4500 people, Macmahon offers the full range of underground and surface mining services and comprehensive construction capabilities spanning transport, marine, water and resource infrastructure services.

With a commitment to providing end to end services, Macmahon’s reputation for outstanding teamwork, integrity and commitment to the environment is underpinned by the company’s core value - safety.

Visit www.macmahon.com.au for more information.

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