Ms. Priestly was appointed to the Board of Directors of SSR Mining in September 2020 and is Chair of the Audit Committee and a member of the Corporate Governance and Nominating Committee. Ms. Priestly was a director at Alacer Gold from August 2019 to September 2020. Ms. Priestly served as CEO of Turquoise Hill Resources Ltd. from 2012 until her retirement in 2015 and as CFO of Rio Tinto Copper from 2008 until 2012. She was VP, Finance and CFO of Rio Tinto s Kennecott Utah Copper operations from 2006 to 2008. Ms. Priestly also served in executive management roles at American Nursing Services, Inc. and Entergy Corporation. Ms. Priestly began her career with Arthur Andersen where she progressed from Staff Accountant to Partner, holding various management and leadership positions, including serving on the global executive team as Global Managing Partner - People. During her 24 years with Arthur Andersen, she provided tax, consulting and M&A services to global companies across many industries, including energy, mining, manufacturing and services. Ms. Priestly has served as a board member of TechnipFMC plc since January 2017.