Industrial History Online

Recording and Communicating Our Industrial Heritage

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The IHO database currently contains 29482 records and 8072 images

Cold Cam - Cockerdale Bloomery - Helmsley

Slag from Cockerdale bloomery showing flecks of green, caused by differences in the melting temperature and how quickly the slag cooled.

Date 8 March 2025

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Industrial History Online is hosted by the Yorkshire Archaeological & Historical Society and is supported by the following Societies