and business to allow for the expansion of Melbourne University and the construction of high-density multi-storey housing. The report was opposed by the academics within the university's own architecture school, many of whom were resident in the area, and part of the nascent gentrification of the inner suburbs. Also opposed by the National Trust, the proposal was eventually abandoned. In the late 1960s, Les Perrott, Ron Lyon, John Timlock and Ernst Kesa were made partners, the firm becoming Perrott Lyon Timlock & Kesa. It became involved in the design of tertiary colleges, notably the new Bundoora campus of the Preston Institute of Technology (now RMIT University) in 1973, and a new tower at the Caulfield Institute of Technology (now Monash University). In 1976, Timlock and Kesa retired, and Brian Mathieson became a partner, the firm becoming Perrott Lyon Mathieson, also known as "PLM". By the mid-seventies, PLM was working on no fewer than four major Collins Street office towers, including the controversial Nauru House. Another major tower they designed at that time was the Brutalist style Spencer Street headquarters for the Melbourne & Metropolitan Board of Works, completed in 1979, and clad in bluestone, which began to fall off and had to be replaced with aluminium panels. In the late 1970s, the Perrott office designed Museum underground station (now Melbourne Central, which opened in 1981. It was later heavily altered, apart from the platforms themselves . In the early 1980s, PLM worked with Gerard de Prue on the Rialto Towers, then the largest project in the city, and the tallest in the country from 1986 to 1991. In the mid 1980s, Carey Lyon, one of Ron Lyon's four sons, who all studied architecture and were grandsons of the founder Leslie M Perrott though their mother, worked for the firm, bringing in the third generation. It was the lead designer for the Telstra Corporate Centre, completed in 1991. In the early 1990s, PLM were part of the collaborative team that designed Melbourne's first casino, Crown Melbourne, which opened in 1997. In the 1990s, they continued their work on colleges, such as the new Benalla campus for the Goulburn Ovens Institute of TAFE, in collaboration with Carey Lyon, who had been a co-director of PLM. The Lilydale Lake campus of the Eastern Institute of TAFE, now part of Box Hill TAFE, was also designed in collaboration with Carey Lyon, and won an