I visited a few steel mills/foundries when I lived in Sheffield (nicknamed the « Steel City », hence the name of the local derby between Wednesday and United, the « Steel City derby »), as part of school trips ( Sheffield Forgemasters in particular, big box). A bit of the workshops but mostly the precision engineering parts, etc. They had rooms where they introduced the kids to the sector and their society, which was super interesting. The area of Rotherham where I was had a special educational program for 9th and 10th graders to introduce them to the business world several days a year.
It is above all steel that made Sheffield a great city, during the industrial revolution the city (intramural) grew from 60,000 inhabitants. in 1800 to 600,000 in 1950. There are still quite a few steel mill jobs in Sheffield, around 1,500-2,000, especially in Rotherham, Liberty Steel (# 3 in Britain in the sector) and Stocksbridge, but that doesn’t don’t stop firing. Liberty Steel has a production unit on Scunthorpe by the way link
(Stocksbridge, near Sheffield, where Jamie Vardy started, at Stocksbridge Park Steels FC, as an amateur/semi-pro, where he was spotted link. Chris Waddle also played there, one game, at the age of 40. He has lived in Sheffield for more than 20 years and once his pro boots hung up, he wore the jersey of several non-league clubs in the area).