the Two Foot Nine Seam as worked by the Penllwyngwent and Wyndham Collieries. The information of the seam working was taken from the Mines Abandonment Plans and overlayed with a modern Ordnance Survey Map by Mr. Lee Reynolds.
the Two Foot Nine Seam as worked by the Penllwyngwent and Wyndham Collieries. The information of the seam working was taken from the Mines Abandonment Plans and overlayed with a modern Ordnance Survey Map by Mr. Lee Reynolds.
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