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Biographical entry Ashcroft, Edgar Arthur (1864 - 1938)

5 September 1864
Sunderland, Durham, England
24 August 1938
Polton, Mid-Lothian, Scotland
Electrical engineer, Inventor, Mechanical engineer and Metallurgist


Edgar Arthur Ashcroft was an inventor, engineer and metallurgist.

In 1894, while employed at Broken Hill Proprietary Ltd., he patented a process for the extraction of zinc from refractory sulphide ores using electrolysis.

In 1895 The Sulphide Corporation Ltd bought the rights to Ashcroft's process.

In consultation with Ashcroft, the Sulphide Corporation Ltd constructed the first electrolytic zinc works in 1897 at Cockle Creek, New South Wales.



c. 1890 - 1894
Career position - Electrician and metallurgist with Broken Hill Proprietary Ltd (BHP)
Career event - Invented a steam generator that used hot slag
Career event - Patented the Ashcroft Process - electrolytic process that recovers zinc from refractory sulphide ores
Career event - The Sulphide Corporation Ltd purchased the Ashcroft Process
1895 - 1897
Career position - Councillor of the Australasian Institute of Mining Engineers

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Rebecca Rigby