Telstra on 3 December 2004, and was replaced by Solomon Trujillo. NBN On 3 October 2013, Switkowski was confirmed as the new chairman and interim CEO of NBN Co by Communications Minister Malcolm Turnbull, and reverted to the role of Non-Executive Chairman from 2 April 2014 following the appointment of Bill Morrow as chief executive officer. This followed a decision to deliver the NBN with 'alternative technologies' such as Fibre to the node and the use of a Multi-Technology Mix (MTM). Nuclear research On 6 June 2006, Switkowski was appointed to chair a Commonwealth Government inquiry into the viability of a domestic nuclear power industry. He was later appointed chairman of the Australian Nuclear Science and Technology Organisation (ANSTO) by federal Minister for Science Julie Bishop on 4 March 2007. Switkowski was originally appointed to the board of ANSTO on 1 January 2006, but stood down when appointed to the inquiry. After the completion of the inquiry, he was then reappointed to the board as chairman on 1 March 2007. His term as chairman concluded at the end of 2010. The inquiry concluded that Australia is well positioned to increase its production and export of uranium as well as adding nuclear power to its own energy mix. However, an independent panel of Australian scientists and nuclear experts have been critical of these findings, claiming that they relied upon flawed assumptions while dodging important questions such as the disposal of radioactive waste and the potential greenhouse gas implications of increased mining. Other directorships On 19 September 2005, Switkowski took a non-executive director role with Suncorp-Metway – his first position after resigning from Telstra. Since then he has become the chairman as of the 2011 Annual General Meeting. In 2006, Switkowski was appointed president of the board of directors of the Australian Centre for the Moving Image on 1 January – for a three-year term. He also took non-executive director roles with Healthscope on 19 January, and with Tabcorp Holdings on 2 October. In 2011 Switkowski was serving as a director of Rare Earth's miner Lynas Corporation as per the director's Share Purchase Notice. Switkowski also currently serves as chairman of Opera Australia and on the board of directors of the Business Council of Australia. Switkowski currently serves on the Board of Oilsearch. In August 2021, Switkowski was appointed as Chairman of Crown Resorts, Australia's largest gambling, gaming and entertainment company. RMIT