Penarth Dock, South Wales - 150 years - the heritage and legacy  
Penarth Dock, South Wales - the heritage & legacy . . .

Volume Ten - Pre-Victorian to the Present Day - Even more aspects - Investigation into the Condition of the Ely River Subway 1991 . . .
Plate 3/13 - Ring 350 - RHS General view and lamination of cast iron surface.

• Plate 3/13 - Ring 350 - RHS General view and lamination of cast iron surface.
 
Plate 3/14 - Ring 370 - RHS. Indication of former water level within Subway, possibly prior to being flooded. Note change in colour of iron oxidation from orange to black.
• Plate 3/14 - Ring 370 - RHS. Indication of former water level within Subway, possibly prior to being flooded. Note change in colour of iron oxidation from orange to black.
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