Macmahon’s GBF wins $220m contract at Deflector underground mine


Underground contracting business, GBF Group, has secured a 4-year contract with Silver Lake Resources to perform the mining works at the Deflector gold and copper mine in Western Australia.

GBF, a subsidiary of mining and engineering services firm Macmahon Holdings, has been providing underground mining services at the Deflector mine since operations commenced in early 2016.

The full service mining contract, valued at approximately $220 million, incorporates all underground development, ground support and production activities, including the provision of all labour and mobile mining equipment

Macmahon’s CEO and MD Michael Finnegan said the contract will run until April 2025.


“We are very pleased to have won this tender and to be working with Silver Lake Resources at Deflector,” he continued.

“This new contract is an important milestone in our strategy to expand our underground business, and is a clear demonstration of the benefits we are now realising from the GBF acquisition.

“Importantly, the Deflector mine is a high-grade gold and copper asset in Western Australia, so is an attractive project in the current macro environment.

“We look forward to continuing to support the development of Deflector, and to achieving further scale in the underground market.”

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