Electrolytic Zinc or the Electrolyic Zinc Company of Australasia (frequently abbreviated to EZ ) was the company that operated a zinc refinery on the banks of the Derwent River in Risdon in Hobart in Tasmania between 1916 and 1984.
The refinery was often given names such as the Risdon works, [1] the Zinc works, [2] reduction works. [3] The current usage and place name located at the Risdon works is identified as Lutana.
The operations of the Risdon works were tied in with the mining of zinc in Rosebery on the West Coast of Tasmania. [4]
The company was founded as a subsidiary of Amalgamated Zinc (De Bavay's), under general manager H. W. Gepp, [5] to take advantage of the cheap and plentiful hydroelectric power then available. [6] The EZ name was established in 1920. The settlement of the suburb of Risdon was almost exclusively that of EZ workers. [7] [8]
EZ company was a major employer in Hobart and an important part of the Tasmanian economy. [9] [10]
Pollution from the works was an issue for the company, and successor companies that operated the works [11] [12] [13] as well as disposal of waste out to sea. [14] [15]
The subsequent owners and operators of the Risdon works after the takeover in 1984 were:
The refinery received an Engineering Heritage National Marker from Engineers Australia as part of its Engineering Heritage Recognition Program. [17]
The River Derwent is a river located in Tasmania, Australia. It is also known by the palawa kani name timtumili minanya. The river rises in the state's Central Highlands at Lake St Clair, and descends more than 700 metres (2,300 ft) over a distance of more than 200 kilometres (120 mi), flowing through Hobart, the state's capital city, before emptying into Storm Bay and flowing into the Tasman Sea. The banks of the Derwent were once covered by forests and occupied by Tasmanian Aborigines. European settlers farmed the area and during the 20th century many dams were built on its tributaries for the generation of hydro-electricity.
The Tasman Bridge is a five-lane road bridge that carries the Tasman Highway (A3) across the Derwent River and the Southern rail line, located near the central business district of Hobart, Tasmania, Australia. Including approaches, the bridge has a total length of 1,396 metres (4,580 ft) and it provides the main traffic route from the CBD to the eastern shore. The bridge has a separated pedestrian footway on each side. There is no dedicated lane for bicycles; however, steps to the pedestrian footway were replaced with ramps in 2010.
The history of Tasmania begins at the end of the most recent ice age when it is believed that the island was joined to the Australian mainland. Little is known of the human history of the island until the British colonisation in the 19th century.
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The mines of the West Coast of Tasmania have a rich historical heritage as well as an important mineralogical value in containing or having had found, specimens of rare and unusual minerals. Also, the various mining fields have important roles in the understanding of the mineralization of the Mount Read Volcanics, and the occurrence of economic minerals.
Risdon is a suburb of Hobart, capital city of Tasmania. It is west of Risdon Vale.
The Mount Read Volcanics is a Cambrian volcanic belt that exists in Western Tasmania.
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Lutana is a suburb of Hobart, Tasmania, Australia. It is part of the City of Glenorchy.
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Sir Herbert William Gepp was an Australian industrial chemist, businessman and public servant.
Sir Colin Fraser was a mining engineer and executive in New Zealand and Australia