Dr Liu joined the Rio Tinto Group as a senior research scientist in 1988. Over her 26-year career with Rio Tinto, Dr Liu held roles in smelting operations, including General Manager Operations at Bell Bay (Tasmania), leading to other senior management roles, including Managing Director Technical Services, where she led Rio Tinto's global technical services unit. Prior to her retirement, she was President and Chief Executive Officer of Rio Tinto Minerals, with responsibility for integrated operations of mining, processing, supply chain, marketing and sales for its Borates business in the United States, Europe and Asia. Dr Liu has served as Vice President of the Board of the Australian Aluminium Council, a Board Member of the California Chamber of Commerce, a Director of Melbourne Business School and Chancellor of Queensland University of Technology. She has also served as a Non Executive Director at Newcrest Mining Limited (from September 2015 to November 2020), Iluka Resources Limited (from February 2016 to April 2019) and Incitec Pivot Limited (from November 2019 to May 2024). With her career as a global executive in the resources industry, she brings experience in mining and processing operations, the execution of capital projects and commodity value chain management. She is chair of Sustainability Committee and member of Governance and Risk Committee.