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 3/17 - Ring 501 - Upper left segment. Stalactites.

• Plate 3/17 - Ring 501 - Upper left segment. Stalactites.

 
Plate 3/18: Ring 550 - Middle right segment. Typical lamination of cast iron surface - 2mm thick.

• Plate 3/18: Ring 550 - Middle right segment. Typical lamination of cast iron surface - 2mm thick.
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