Hi George,
I was born in Barry, South Wales. Once it was the fastest growing and busiest coal port on the planet. I saw the docks decline, and now its rising up again with designer dwellings instead of cranes. Sill a few ships, but not many.
In the mid-80s I worked in Bridgend, on a job creation scheme. We had a lot of ex-steelworkers, many of who had worked at Port Talbot. As a boy I remember the drive to (great) Aunt Lil's in Mumbles/Swansea and when you drove past Port Talbot you had to wind up the windows and shut the air vents to keep the eggy small out. The hills above the motorway opposite the steelworks were covered in dead trees. So there were good and bad sides to the decline of industry, but the human cost was high.
I've spent about 20 years working in the Black Country and Birmingham, not quite where the industrial revolution began (I think we can attribute that to Ironbridge to the west) but certainly where it got up to speed. You'll know that the area has an equally long list of bands to its credit, what is the link between heavy industry and music? 
Neil