research and expansion In 1958, following completion of the TAE and IGY, New Zealand made the decision to continue to operate Scott Base for scientific research, much of which depends upon the continuity of recorded data over a period of years. In order to maintain operations, a base rebuilding programme began in 1976. As of 2008, the only original building is the TAE 'A' mess hut, which contains material recording New Zealand's involvement in Antarctica since 1957. In 2005 the two-story high Hillary Field Centre was commissioned, increasing the floor area of Scott Base by 1800 square metres and providing work areas to support field parties as well as additional office space. The building was officially opened by then-Foreign Minister Phil Goff and Sir Edmund Hillary. The leader of Scott Base for the 1964–65 season, Adrian Hayter, published a personal memoir of his experience. He was preceded as Leader by Russell Rawle and followed by Mike Prebble. These three leaders are commemorated with Rawle Glacier, Mount Hayter and Prebble Glacier, assuming the leader in 1965–66 was on the base support party of 1961–62. From 1957 until 1986, dogs played a part in base operations. Initially, they were an essential means of transport, but with better technology, their importance dwindled until they were removed in line with environmental treaties. Scientific diving operations began in 1985. Between 1985 and 2006, a total of 1,296 had been logged. 21st century redevelopment In support of the future of New Zealand’s Antarctic science programme, the base will be redeveloped. In June 2019 the Government committed NZ$18.5 million (US$12.4 million) for the next phase of the Scott Base Redevelopment project, which will see the base's 12 separate buildings replaced by three large interconnected buildings. Jasmax and Hugh Broughton Architects came up with the architectural design. Since then the New Zealand Government has committed $344 million to rebuild the base. On 5 November 2021, Antarctica New Zealand confirmed that PrimePort Timaru will host the redevelopment of the prefabricated Scott Base facilities. Besides the three interconnected buildings, the project also involves upgrading the Ross Island wind farm. The redevelopment project will create an estimated 700 jobs over the next six years. Historic site The A Hut of Scott Base is the only existing Commonwealth Trans-Antarctic Expedition (1956–1957) building in Antarctica. It has been designated a Historic Site or Monument (HSM 75), following a proposal by New Zealand to