MONADELPHOUS GROUP LIMITED — Capital/Financing Update 2021

Jun 21, 2021

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22 June 2021

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 the award of a number of new construction and maintenance contracts in the resources sector totalling approximately $215 million.

Authorised by

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Philip Trueman Company Secretary

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ASX RELEASE

22 June 2021

MONADELPHOUS CONTRACTS UPDATE

Engineering company Monadelphous Group Limited (ASX: MND) (“Monadelphous” or “the Company”) today announced it has secured a number of new construction and maintenance contracts in the resources sector totalling approximately $215 million.

The Company has secured a contract with BHP Olympic Dam Corporation for the smelter campaign maintenance works at the Olympic Dam copper mine in Roxby Downs, South Australia. Work will commence immediately and is expected to be completed in December 2021.

Monadelphous has also been awarded a two-year extension to its existing maintenance services contract at Olympic Dam. The contract scope includes civil, structural, mechanical, building maintenance and electrical services, as well as the addition of underground rail maintenance services.

In the iron ore sector in the Pilbara region of Western Australia, Monadelphous has been awarded several contracts, including:

• Several sustaining capital contracts under its panel agreements with BHP and Rio Tinto; and

• • A contract with Rio Tinto for the provision of construction and support services associated with the Gudai-Darri iron ore project, with work expected to be completed by the end of calendar 2021.

In Chile, the Company’s maintenance and construction services business, Buildtek, has secured a number of new contracts, including:

• A three-year contract with Codelco for the operations and maintenance of water infrastructure at the Chuquicamata underground mine in Calama. Buildtek has been providing these services on this site since 2018;

• Two new contracts with Codelco for maintenance activities associated with the concentrator plant at El Teniente mine in Rancagua; and

• A contract with BHP Minera Escondida for the construction of modularised pump stations and associated infrastructure of the Escondida copper mine in Coloso.

Finally, Monadelphous, in collaboration with global heavy lifting services company Fagioli, has secured a contract with NMT International (Australia) to deliver specialist heavy lifting and haulage services at the Iron Bridge Magnetite Project, a joint venture between Fortescue Metals Group subsidiary FMG Magnetite Pty Ltd and Formosa Steel IB. The strategic collaboration with Fagioli enables Monadelphous’ specialist Heavy Lift business to increase capacity and broaden capability for the Australian resources and energy markets.

Further Information

Analysts/Investors Kristy Glasgow Investor Relations T +61 8 9316 6386 M +61 403 781 909 Investor_relations@monadel.com.au

Media

Ella McCarthy Group Manager - Marketing and Communications T +61 8 6311 1018 M +61 401 404 874 EMcCarthy@monadel.com.au

About Monadelphous

Monadelphous Group Limited (ASX: MND) is a leading Australian engineering group providing construction, maintenance and industrial services to the resources, energy and infrastructure sectors. The Company has two operating divisions − Engineering Construction, providing large-scale multidisciplinary project management and construction services, and Maintenance and Industrial Services, specialising in the planning, management and execution of mechanical and electrical maintenance services, shutdowns, fixed plant maintenance services and sustaining capital works.

Monadelphous is headquartered in Perth, Western Australia, with a major office in Brisbane, Queensland, and offices, projects, facilities and workshops across Australia and in New Zealand, China, Mongolia, Papua New Guinea, Chile and the Philippines. Please visit www.monadelphous.com.au for further information.