Macmahon Secures $900M Boost with Byerwen Mine Contract Extension

Highlights 

• Macmahon secures $900 million contract extension. 
• Continued operations at Byerwen Mine through 2028. 
• No new capital outlay required for project extension. 

Macmahon (ASX:MAH) is set to significantly bolster its secured order book following a three-year contract extension at the Byerwen coking coal mine, located in Queensland’s resource-rich Bowen Basin. The contract extension, valued at approximately $900 million, is expected to reinforce the company’s operational continuity and strategic presence in one of Australia’s key coal-producing regions. 

Since 2017, Macmahon has been delivering open-cut mining services at the Byerwen site, including load and haul operations as well as crusher feed services. The mine, situated 45 minutes west of Glenden, is owned by Byerwen Coal – a joint venture between QCoal Group and Japan-based JFE Steel (TYO:5411). The mine supports more than 800 jobs, making it a significant contributor to the local economy. 

The new extension will commence from October 2025 and continue for three years, ensuring a steady workflow for Macmahon and its existing on-site workforce. The agreement remains subject to final documentation, with all terms expected to be completed before 30 September 2025. 

One notable aspect of this extension is that no new capital expenditure is anticipated, as Macmahon already has both personnel and equipment in place. This allows the company to maintain efficiency and financial discipline, operating under sustaining capital budgets without the need for major new investments. 

Macmahon’s CEO highlighted the long-standing relationship with QCoal and the pivotal role the Byerwen project has played in stabilizing and growing the business over the past eight years. He emphasized the collaborative efforts underway to refine contract terms with a focus on achieving operational improvements and shared outcomes. 

The Byerwen Mine itself is a significant operation, with the capacity to produce up to 10 million tonnes of hard coking coal annually. The project received its mining leases in 2017 and has since completed construction of its initial coal handling and preparation plant. 

This contract extension further cements Macmahon’s role in Queensland’s mining sector and underlines its operational capability in delivering large-scale mining services efficiently. It also reflects the strength of long-term industry partnerships and the strategic importance of high-quality metallurgical coal in global steel production.