Description:Pottery factory exterior including two calcining kilns.
Taken at Furlong Mills Co., Ltd., Furlong Lane, Burslem, Stoke-on-Trent.
Calcining is the process of heating bone or flint to soften it for grinding down into a powder.
Bone and flint powder are added to clay.
If bone is added the finished ware is white and translucent. These are the main characteristics of bone china.
Flint powder helps moisture to escape the clay when it is fired. This stops the clay bursting.
Taken from the Gladstone Pottery Museum Photographic Collection.
This photograph is part of the collections at Stoke-on-Trent Museums.