Macmahon Holdings

Macmahon has been working at the Byerwen mine in Queensland since 2017.

Macmahon lands three-year extension at Byerwen

The $792 million contract may be further extended for two years

17 December 2025

Macmahon contractor killed at Fosterville

Operations at the mine suspended but expected to resume today

08 December 2025

Where Kucing Liar is located in relation to Grasberg.

Macmahon to tame Kucing Liar for Freeport Indonesia

Copper-gold block cave mine expected to run until 2041

24 November 2025

Macmahon acquired Decmil in August last year.

Macmahon lands $86M civil contract in Victoria

Complements a simultaneous focus on underground mining

22 September 2025

Macmahon is aiming to grow its underground division by 50% over the next two years.

Macmahon continues underground services push

The contractor has landed two sub-surface deals in as many days

26 August 2025

Macmahon is looking to grow its underground division by 50% over the next two years.

Macmahon lands $55M underground contract at Kal East

Black Cat’s Majestic mine will feed the Lakewood processing facility

25 August 2025

Macmahon reported a 20% increase in revenue to more than $2.4 billion in FY25.

Decmil acquisition drives Macmahon to record results in FY25

Focus is on organic growth for now, but further acquisitions not off the table

19 August 2025

Decmil's order book bulks up with civil contract wins

Works with HanRoy, Rio Tinto and Glencore

05 August 2025

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