MACMAHON HOLDINGS LIMITED — Capital/Financing Update 2012

Mar 14, 2012

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15 March 2012

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ASX Markets Announcements Australian Securities Exchange Limited Level 4 20 Bridge Street SYDNEY NSW 2000

RE: John Holland JV awarded $340 million Ichthys onshore LNG facilities site development contract

Please find attached a copy of a media release to be issued today by John Holland Group Pty Ltd, a wholly owned subsidiary of Leighton Holdings Limited.

Yours faithfully,

A.J. MOIR Company Secretary

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ASX/MEDIA RELEASE

John Holland JV Awarded $340 Million Ichthys Onshore LNG Facilities Site Development Contract

Darwin, 15 March 2012: John Holland, in a 50:50 joint venture with Macmahon Holdings Ltd, has been awarded a $340 million site development civil works contract by the JKC Joint Venture (JGC Corporation, KBR, Chiyoda Corporation) for the onshore facilities of the Ichthys LNG Project near Darwin in the Northern Territory.

The Macmahon John Holland Joint Venture will undertake civil construction works associated with delivering the finished earthwork levels for the LNG plant and associated facilities. The works include access roads, earthworks, drainage and ground improvement works required for the establishment of the landmark project.

The award follows the recent final investment decision for the project made by INPEX (Operator) and Total, which was reached on 13 January 2012.

John Holland Group Managing Director, Glenn Palin, said: “Today’s award reflects the diversity of John Holland and our ability to deliver a vast range of works across the energy and resources sector, from site preparation through to design, delivery and commissioning works.”

He continued, “The contract builds on our strategy of aligning closely with major EPC contractors on approved projects in the oil and gas sector, offering safe and reliable contracting solutions to both the upstream and downstream components of these important projects.”

Gavin Stubbs, General Manager of John Holland’s Northern Region business, said: “John Holland has a long history in Darwin and a record of working closely with local suppliers in the delivery of major construction works.

We look forward to using our local knowledge and experience in the resources sector to deliver long-term employment and economic benefits for the people of the Northern Territory.”

John Holland’s current portfolio of work in the Northern Territory includes the Robertson Barracks redevelopment works - Part 1 and Part 2 and the SkyCity Resort development.

The Ichthys LNG Project is a joint venture between INPEX (76%, the operator) and Total (24%). Gas from the Ichthys Field, in the Browse Basin approximately 200 kilometres offshore of Western Australia, will undergo preliminary processing offshore to remove water and extract condensate. The gas will then be exported to onshore processing facilities in Darwin via an 889km subsea pipeline. The Ichthys LNG Project is expected to produce 8.4 million tonnes of LNG and 1.6 million tonnes of LPG per annum, along with approximately 100,000 barrels of condensate per day at peak.

Early works on the project will commence almost immediately with site works starting in early April 2012. Completion of the site development work is scheduled for mid-2014.

- ENDS -

For further media information:

Richard Baker Media & External Communications Manager Mobile: 0400 809 116 Email: richard.baker@jhg.com.au

About John Holland

John Holland, a wholly owned subsidiary of Leighton Holdings Limited (ASX: LEI), is one of Australia’s leading engineering, contracting and services providers to the infrastructure, energy and resources and transport services sectors. Operating across Australia and in New Zealand, South East Asia and the Middle East, John Holland’s business is driven by its collaborative approach to project delivery and its diversity of skills and capabilities. Its operating principles - People, Performance, Partnerships and Profit – are a key focus in the way John Holland conducts its business.

John Holland’s experience covers a wide range of contracting and services capabilities, from tunnelling, communications, building and civil construction solutions in the infrastructure sector to the delivery of major water and environment, energy, mining and minerals and industrial projects in the energy and resources sector. John Holland is also a leading provider of services to the transport sector, with industry leading skills in railway construction, operations and maintenance, aviation services and ports infrastructure and maintenance.

John Holland’s strength lies in its ability to deliver diverse, complex and challenging major projects, its partnership approach to client relationships and absolute commitment to people and careers. John Holland has over 60 years’ experience, work in hand of over $7 billion and over 8,500 people across Australia.