Fieldwork has recently located the site of a kiln at Hanley Swan in Worcestershire. This was partially excavated, and among the finds there were sherds of pottery with a white coating. Analysis by scanning electron microscopy and X-ray diffraction confirms that the coatings are unmatured pottery glaze. Lead oxide had been applied, without admixed material, and the glaze formed by reaction with the body.
Lead Glazing Technique from a Medieval Kiln Site at Hanley Swan, Warwickshire
15 May 2025