Ball clay (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ball clay" in English language version.

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clayheritage.org

"The Widespread Use of Ball Clay". Introduction to Ball Clays. The Ball Clay Heritage Society. Archived from the original on 6 October 2008. Retrieved 5 August 2008.

"What is ball clay?". Industrial Minerals Association - North America. Archived from the original on 23 September 2009. Retrieved 5 August 2008.

Highley, David; Bloodworth, Andrew; Bate, Richard (2006). "Ball Clay - Mineral Planning Factsheet" (pdf file). British Geological Survey. Retrieved 5 August 2008.

"History of Ball Clay - Swanage Railway". The Purbeck Mineral & Mining Museum. Archived from the original on 14 May 2008. Retrieved 5 August 2008.

"What is ball clay?". Industrial Minerals Association - North America. Archived from the original on 23 September 2009. Retrieved 5 August 2008.
"The Widespread Use of Ball Clay". Introduction to Ball Clays. The Ball Clay Heritage Society. Archived from the original on 6 October 2008. Retrieved 5 August 2008.
"History of Ball Clay - Swanage Railway". The Purbeck Mineral & Mining Museum. Archived from the original on 14 May 2008. Retrieved 5 August 2008.