Used to be a steelworks at Chesterfield. I guess that's gone too. One time when I visited the coke ovens there they were working on cleaning out the doors and straightening the vertical retainers. To do this one oven either side of the one being worked on had been closed down but on either side of these three all were still working. The heat was immense and the guys working were wearing leather and canvas suits that appeared to stem from Victorian times. Lots of flaps and overlaps. Very interesting. Ah, those were simpler days. Probably didn't seem simple at the time!