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John William Clarke
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Individual
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Individual
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Publication of GB189622715ApublicationCriticalpatent/GB189622715A/en
GB189622715D1896-10-131896-10-13Improvements in and connected with Amalgamating Apparatus for Extracting Gold and Silver from their Ores.
ExpiredGB189622715A
(en)
Improvements in the Treatment of Slimes or Tailings for the Extraction of Gold or Silver therefrom by Means of Solvents, and Apparatus for that Purpose.