On the coal mining theme, anyone above a certain age will remember the Dunlop Trials boots, they were steel toe capped 'wellies' with finning on, an internal steel sole support and a good tread pattern to them. The NCB in the day supplied them to us as work wellies.... the chap in the stores at Whitwell Pit used to be amazed at how many pairs I wore out, if he'd gone to a trial in our area in the mid '70's he'd have seen quite a few pairs......
Happy days.....