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FinanceMacmahon Underground secures A$355m mining services contract at Mt Marion lithium mine
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Macmahon Holdings' subsidiary, Macmahon Underground, has signed a A$355m ($247m) contract to provide mining services at the Mt Marion lithium operation in Western Australia. The three-year agreement includes an option for a one-year extension and covers comprehensive development and production mining activities. The site, located 70km south of Kalgoorlie, is co-owned by Mineral Resources and Jiangxi Ganfeng Lithium. The contract marks a transition to underground mining at the site, which began open-pit operations in 2016. Mineral Resources confirmed a final investment decision in May 2026 to expand operations, including a flotation plant and underground mining. Macmahon's CEO highlighted the opportunity as positioning the company as a tier one contractor in future-facing commodities.
Source report
Macmahon Holdings' wholly owned subsidiary, Macmahon Underground, has signed a contract valued at A$355 million ($247 million) to provide mining services at the Mt Marion lithium operation in Western Australia.
The three-year agreement includes an option for a one-year extension and involves comprehensive development and production mining activities.
Project Overview
The Mt Marion site is located:
- 70 km south of Kalgoorlie
- 590 km east of Perth
The operation is co-owned by Mineral Resources and Jiangxi Ganfeng Lithium. This contract marks an important development phase in transitioning the Mt Marion mine.
Executive Statements
Michael Finnegan, Macmahon Managing Director and CEO, said:
"This is a high-quality, long-term opportunity to collaborate alongside strong, aligned partners, and positions Macmahon Underground firmly on the global stage as a tier one contractor in future-facing commodities. We look forward to working closely with the joint venture to unlock the full potential of this operation and support its continued growth as a globally significant lithium asset."
Andrew Cooper, Mineral Resources Underground Mine Planning Manager, said:
"We are focused on systematically building the technical and operational capability to unlock the full potential of the Mt Marion orebody. Macmahon brings proven underground expertise to support our mining plans and together we are focused on executing this safely and efficiently."
Site Infrastructure
Mt Marion, which began open-pit mining in 2016, operates under a life-of-mine, build-own-operate agreement managed by Mineral Resources. Infrastructure at the site includes:
- Multiple open-pit mines
- A processing plant with a Dense Media Separation concentrator
- Waste dumps
- A run of mine pad
- Tailings storage facilities
Expansion Plans
In May 2026, Mineral Resources confirmed a final investment decision to expand operations at the Mt Marion lithium project. The planned expansion will introduce both a flotation plant and underground mining at the site.
This article was originally created and published by Mining Technology, a GlobalData owned brand.
Source
Yahoo FinanceWestern
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Macmahon secures $247m contract for Mt Marion lithium project