| 1. | The ball clay is processed today at the Furzebrook plant of Imerys.
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| 2. | Purbeck ball clay is quarried for use in the production of fine pottery.
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| 3. | The ball clay was used to make fine ceramic products, such as turquoise.
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| 4. | Approximately 80 % of the ball clay extracted has been exported.
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| 5. | He uses local North Devon ball clays and fires his kiln with wood.
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| 6. | These include ball clay, silica, sand, kaolin, limestones and granite.
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| 7. | Passenger services ceased on 2 October 1965 although ball clay traffic continued until 1982.
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| 8. | Towards the end of the 18th century, the ball clay industry was steadily expanding.
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| 9. | Purbeck ball clay is composed of kaolinite, mica and quartz.
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| 10. | The UK is a leading world producer and exporter of china clay and ball clay.
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