Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Pontcysyllte Aqueduct and Canal' has mentioned 'Iron' in the following places:
Occurrence Sentence Text Source
[8] It consists of a cast iron trough supported 126xc2xa0ft (38xc2xa0m) above the river on iron arched ribs carried on eighteen hollow masonry piers (pillars).
The iron castings for the trough were produced at the nearby Plas Kynaston Foundry, Cefn Mawr, which was built by the Shrewsbury ironfounder and millwright William Hazledine in the hope of gaining the contract.
[20] The trough was made from flanged plates of cast iron, bolted together, with the joints bedded with Welsh flannel and a mixture of white lead and iron particles from boring waste.
The trough of the Cosgrove aqueduct has a similar structure, although it rests on trestles rather than iron arches.
They bear witness to very substantial international interchanges and influences in the fields of inland waterways, civil engineering, land-use planning, and the application of iron in structural design.