Albertine Malham John Aylett Eric Higgs Gerry McDonnell


Tin-smelting slag from an early medieval site at Crift Farm in Cornwall was analysed using SEM/EDS. A comparison was made between the chemical composition of this slag, which was produced by a simple hand-blowing technology, and slag from seven tin-working sites of later date which employed a more sophisticated water-powered blowing-house technology. The chemical compositions of areas within single pieces of slag were found to be highly variable. This is suggestive of a highly viscous material, with little mixing during smelting. The Crift Farm slag was found to have a chemical composition sufficiently similar to the later ‘blowing house’ slags that it could not be distinguished from them by this method of analysis.


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How to Cite
Tin smelting slags from Crift Farm, Cornwall, and the effect of changing technology on slag composition. (2022). Historical Metallurgy, 36(2), 84-94.