General view of an Alum works in the Whitby area

General view of an Alum works in the Whitby area. From George Walker The Costume of Yorkshire Leeds 1814, Aquatint. Steeping calcined (burnt) shale in water in pits produce raw alum liquor which would be gravity fed to processing plant where it would be refined and boiled until alum crystals produced. These were important as a mordant (fixer) in textile dyeing industry

1814 Alum Aquatint Boiled Burnt Chemical Crystals Dyeing Fixer Gravity Liquor Mordant Pits Processing Produce Refined Shale Steeping Whitby

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