Mining services company Thiess has secured a 14-month contract extension from PT Wahana Baratama Mining for the Wahana coal mine in Satui, South Kalimantan, Indonesia.
The extended contract will see Thiess continue with overburden removal and coal mining activities, capitalising on its established site infrastructure, technical expertise and commitment to safety and environmental standards.
Thiess Group executive chair and CEO Michael Wright stated: “This extension reinforces our strong relationship with Bayan and reflects the trust they place in our team to deliver safe, sustainable and efficient mining solutions. It is a testament to our people on the ground whose dedication and performance continue to create long-term value for our clients.”
This extension allows PT Wahana Baratama Mining to access additional coal reserves, and is expected to increase production output through 2025 and 2026.
Thiess Group Asia executive Cluny Randell stated: “We’re proud to continue supporting Wahana. This extension highlights the benefit of having a scaleable and responsive operation, underpinned by our deep understanding of the site and our commitment to operational excellence.”
In February 2025, Thiess extended the contract with Wahana Baratama Mining for the Wahana East Extension project in South Kalimantan. The 16-month extension requires Thiess to continue to deliver full mining services, including load and haul, drill and blast, and pit dewatering.
Thiess has been operating on the project since 2007. In November 2021, the company secured a three-year A$220m ($161.2m) contract renewal for continuing to offer mining services at the Wahana coal mine.
In June 2025, Thiess announced a contract extension valued at A$2.3bn over three years at Jellinbah Group’s Lake Vermont mine in Queensland’s Bowen Basin.
