installed as part of the $400 million refurbishment of the Sydney Hilton. Taking twelve months to create and requiring a budget of up to half million dollars, the work was completed in 2005. The sculpture was fabricated from 380 kilograms of aluminium, and assembled by a team of eight Croatian welders. By 2006, Oliver had held 18 solo exhibitions of her work, half of them at Roslyn Oxley9 Gallery, which represented her throughout her career as a sculptor. Only one of those solo exhibitions was held outside Australia: a 1992 exhibition at Auckland City Gallery. However, Oliver was represented in numerous international group shows, including five during the period 1983 to 1984, around the time she completed her master's degree in London. Four of the group shows at that time were in the United Kingdom; the fifth was at the Museum of Traditional Industries in Kyoto. Subsequent international group shows included 'Five Australian Artists' at Brest's Centre Culturale in 1988, the year she undertook an artist's residency in that city. Later group shows of which Oliver was part included 'Prospect '93' at the Frankfurter Kunstverein, 'Systems End: Contemporary Art in Australia', which exhibited in several east Asian galleries in 1996, and the Beijing International Biennale in 2003. Technique A sculptor for her entire artistic career, Oliver used paper, cane or fibreglass for her early works. However, she found "fibreglass hazardous and paper too impermanent", and for most of her career she worked in metal. The metals used for her creations varied: the monumental Vine was fabricated in aluminium, as was the Brisbane sculpture Big Feathers; however most, such as Palm and the 2002 sculpture Lock, were crafted in copper. All 25 works included in the 1995 publication, Bronwyn Oliver: mnemonic chords, were made in copper, though a handful also utilised other materials such as bronze, lead or, in one case, fibreglass. Oliver was always preoccupied with "what materials will do". Fink observed that "[f]rom the beginning, Oliver has been interested in things that are made from the inside out, and her works often give cryptic evidence of their manufacture". That evidence of manufacture was not confined to the works themselves: friends and art critics observed the injuries and marks she carried as a result of working with such unforgiving material. Ideas were often first sketched by Oliver, before she moved to construction in three dimensions. When preparing commissions, she would