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 3/9 - Ring 140 - Middle left segment. 0.5mm depth of cast iron surface lamination.

• Plate 3/9 - Ring 140 - Middle left segment. 0.5mm depth of cast iron surface lamination.
 
Plate 3/10 - Ring 140 - First stalactites found in Subway crown.
• Plate 3/10 - Ring 140 - First stalactites found in Subway crown.
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