• Plate 3/1 - Ring 10 - General arrangement of Subway looking south.

• Plate 3/2 - Ring 4/5 - Detail of flange connection between rings.

• Plate 3/3 - Ring 10 - Lower left segment. Breakdown of paint system and surface corrosion of cast iron.

• Plate 3/4 - Ring 30 - RHS General view.

• Plate 3/5 - Ring 85/86 - Corrosion at ring joint caused by historic water ingress.

• Plate 3/6 - Ring 96 - Lower right segment. Evidence of slight water ingress through Subway lining.

• Plate 3/7 - Ring 110 - Lower right segment. Severe lamination of fixing nut.

• Plate 3/8 - Ring 130 - LHS of Subway. Indication of water level on Subway linings prior to pumping out.