The 1888 maps seem to have a lot more shafts marked on them than the later issues. This is a proper cause for concern. I shudder to think about the dodgy ground that I may have stood on in search of remains... and that one day, I might not be so lucky.
I've seen a few that are in the process of going down... they usually get filled with something before they break through totally.... one of interest is where you took the photo of that whim plat stone, Roy. (I need to have a look for an adit there)
I'm still very much doing all my poking in stuff drained by the county adit. Or within about 200M of it.
Just like I'm doing a big log of everything that's open, where it goes and what state it's in, I would be interested in Redruth next. There are very much still places to look and when I get around to it, I will. :offtopic:
I still haven't been down Uny yet. One of the classic trips that I've yet to do... that and Bellan.
Anyway. Carnkie, I'm assuming that you don't have a copy of the Hamilton Jenkin maps.... They are a worthy companion if you do your poking around outdoors.... I wonder if his book on the interpretation of stuff around Redruth has anything of interest....
Anyway....as you were đŸ˜‰