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Gweld Gwrthrychau 3D
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Harfords, Davies & Company. Ebbw Vale (Sirhowy Iron Works): 3D model of a 10 ½ inch locomotive, Industry, n.d This locomotive was the first to be built with vertical rocking beams, and included a fully sprung tender. The chimney was hinged to go through a tunnel. The 3D model was constructed at the National Library of Wales by using historic plans and a range of reference photographs.

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