The colliery blacksmith I knew didn't work do the farriery work with the ponies, he was definitely the other kind of blacksmith described in the link to Big Pit posted by Conahy Calling who spent his time making and repairing tools, metal fixings etc other
I stand to be corrected,Mabel, as I thought shoes for the ponies would have been one of his jobs, and that fashioning other metal fixings, etc. would also have been in his daily workload.
And, re Stan's post, subsequent to mine, that is the newspaper report I came across.
Delve into Durham Mining Museum contents - you never know what you will discover. As I said I wasted (

090 minutes earlier today, but I came across a photograph of workers at a local pit in the 1950s, and there was a neighbour from 3 doors away. !!!!