MONADELPHOUS GROUP LIMITED — Capital/Financing Update 2012

Oct 23, 2012

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24 October 2012

Company Announcements Australian Securities Exchange Limited Level 4, 20 Bridge Street SYDNEY NSW 2000 AUSTRALIA

Dear Sir / Madam

RE: Monadelphous Contracts Update

Please find attached a copy of an announcement to be issued today by Monadelphous Group Limited regarding construction and maintenance work with Rio Tinto’s iron ore operations in the Pilbara region of Western Australia.

Yours sincerely,

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Philip Trueman Company Secretary

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ASX RELEASE

24 October 2012

Monadelphous Contracts Update

Leading engineering group Monadelphous Group Limited (ASX: MND) (“Monadelphous”) today announced it has been awarded construction and maintenance work with Rio Tinto’s iron ore operations in the Pilbara region of Western Australia. This work has a combined value of approximately $320 million.

Monadelphous has received a notice of award for a construction contract that involves structural, mechanical and piping works for Rio Tinto’s Marandoo Mine Phase 2 expansion project, 45 kilometres east of Tom Price. The contract was awarded under a framework agreement, announced in February 2012, for Monadelphous to provide construction services as part of Rio Tinto’s broader program to increase the capacity of its Pilbara iron ore operations to 353 million tonnes per annum. Work on the project has commenced and is scheduled to be completed in the third quarter of the 2013 calendar year.

Monadelphous has also been awarded three-year extensions to two shutdown and maintenance services contracts for Rio Tinto’s coastal and inland west operations. These contracts have been expanded to include services previously provided by Monadelphous under separate structural integrity contracts, which involve refurbishment work on iron ore assets.

“We’re pleased to continue our extensive support for Rio Tinto in the Pilbara through the ongoing maintenance work and our first contract under the framework agreements,” Monadelphous Managing Director Rob Velletri said.

Further Information Analysts/Investors Media Rachael Cutler Brett Lane Investor Relations Manager Group Communications Manager +61 8 9315 7429 +61 8 9315 7385 +61 457 539 985 +61 411 177 809 rcutler@monadel.com.au blane@monadel.com.au

Monadelphous Group Limited is a leading Australian engineering group providing services to the resources, energy and infrastructure industry sectors. The company has a solid track record in the safe and effective delivery of complex and large-scale engineering construction projects and maintenance and industrial services for industry throughout Australia. For more information or to join our free email alerts service visit: www.monadelphous.com.au