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Arch Former A wooden former is constructed and held up with four posts inside the chamber. When the arch is completed, the posts will be removed very carefully allowing the former to drop down 2007 |
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Image by Deiniol Williams |
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Arch Former A wooden former is constructed and held up with four posts inside the chamber. When the arch is completed, the posts will be removed very carefully allowing the former to drop down 2007 |
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Image by Deiniol Williams |
