| 21. | Stoneware may be vitrified or semi-vitrified, the latter type would not be impermeable without glaze.
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| 22. | Vitrification is a particularly attractive immobilization route because of the high chemical durability of the vitrified glass product.
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| 23. | Vitrified forts such as Castle Hill are rarely found in England, and are more usual in Scotland.
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| 24. | The roofs were covered vitrified tile over book tile while the dome was covered with gilt glass tiles.
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| 25. | The excavations also found vitrified rock, possibly indicating the island was once occupied by a vitrified fort.
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| 26. | The excavations also found vitrified rock, possibly indicating the island was once occupied by a vitrified fort.
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| 27. | Typically, they only survive as earthworks today, although remains of vitrified forts are found throughout Scotland.
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| 28. | Other similarly-sized vitrified forts within the area include Dun Evan, Dun Finlay and Dun Davie.
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| 29. | Each block of " vitrified " waste each weighs 490 kilograms ( 1, 000 pounds ).
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| 30. | Twenty-First Century Medicine has vitrified a rabbit kidney to-135 �C with their proprietary vitrification cocktail.
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