Project data
Overview
Thiess, in joint venture with local contractor Khishig Arvin, will deliver the first underground decline project at the Oyu Tolgoi copper and gold project in Mongolia's South Gobi Desert.
Thiess is focused on building local capability, with over 90 per cent of the workforce being Mongolian.
In 2024, The Thiess-Khishig Arvin Joint Venture (TKAJV) has secured a new contract to provide mining services at the world-renowned Oyu Tolgoi copper and gold project in Mongolia. This milestone is significant as it will see TKAJV return to underground mining services, building on its recent successes with numerous underground construction projects, following the development of the 6.5km twin declines.
The scope of work for the three-year contract includes executing underground ground support and development work, utilising more than 300 Thiess people to undertake these works. This further cements TKAJV’s role as a trusted partner for high-quality mining services at Oyu Tolgoi. This new chapter for Thiess in Mongolia presents a great opportunity for the joint venture to expand its scope of work and continue delivering safe and effective services to one of the largest copper projects in the world.
Since starting the Oyu Tolgoi Boxcut and Decline project in 2016, we’ve consistently delivered safe and innovative solutions, with a strong focus on the development of our people.
Thiess has been involved in multiple projects in Mongolia since 2007, including numerous projects with the Thiess-Khishig Arvin Joint Venture at Oyu Tolgoi
