b'PROJECT STORIESBuilt on a strong foundationCaring, courageous, curiousthese are the values at the heart of the Oyu TolgoiThiess partnership, forming the foundation of a relationship built on trust and innovation.With safety and sustainability guiding every decision, its nothe joint venture had secured a contract extension, taking on wonder that this collaboration has flourished, delivering boldeven more underground construction works. In October 2024, results in the challenging conditions of Mongolias Gobi Desert. Thiess secured a further three-year contract for the site.Since July 2016, Thiess, alongside local contractor Khishig Arvin,Cluny Randell, Group Executive Asia, explains, This contracthas taken on a groundbreaking task: driving the first undergroundis a testament to the hard work and dedication of our team on decline project at the Oyu Tolgoi Copper and Gold Mine. the ground. Since starting the project in 2016, weve consistently delivered safe and innovative solutions. Returning to the main This project, led by Rio Tinto, was no ordinary feat. It involvedmine with a contract of this scale is a huge achievement, and constructing twin declines and complex underground infrastruc- positions us for future growth at Oyu Tolgoi and in Mongolia.ture to create safe access to tunnels and conveyors that stretch over ten kilometres, plunging to depths of up to 1300 metres. The success of this project isnt measured by mining alone. Over 90 per cent of its workforce is local, and Thiess has invested The strength of the relationship between Oyu Tolgoi andUS$120,000 in community projects, ensuring that the Gobi Thiess has been key to this success. The client works in Desert region reaps the benefits of this ambitious endeavour.a highly collaborative way, ensuring all parties benefit, says Brett Harris, Executive Director of Thiess Mongolia. This createsIts been hugely rewarding to be a part of this, not onlyan open, innovative and outcome-focused environment. to gain personal growth and experience, but also to see the positive impacts on the community, says Brett. With the right This spirit of collaboration and innovation reflects the team and culture, even in the face of extreme challenges, you essence of Thiess as the team pushes boundaries to build can achieve high performanceand have fun while doing it. one of the worlds largest underground block caves.Their approach combines cutting-edge technology with a strong commitment to environmental, social and governance (ESG) principles. The results speak for themselves: by 2022,114'