As someone who has proudly worn my iron ring for nearly 40 years, following my degree in civil engineering from Canada, may I thank you for your correction to the myth of the first iron rings being made from steel from the fallen Quebec Bridge (NCE 12 February).
However, you missed the most obvious error in Ms Shaw's letter, in her reference to the bridge linking Winnipeg to Moncton. Winnipeg and Moncton are actually two time zones apart, one being on the western prairies, and the other on the east coast of Canada.
In actual fact the bridge in question was a more modest structure over the St Laurence river in the Province of Quebec.
Craig Wilson (M), Craig.Wilson@rbkc. gov. uk