Fascinating. That is Wheal Squire.
Oddly enough, some of the shafts have ladderways which may or may not be connected with Wheal Jane's poking around.
A shaft opened up there quite recently with quite a lot of stonework on one side. I think it's probably an angle-bob mechanism.
A couple of us poked around a few shafts in there, but were always wary of the air. I think Ting Tang had "Flat Lode" and "Tin Lode" which continued into Wheal Squire and it was probably something to do with those. Looking at the size and amount of shafts on them, they weren't major.
Squire woods almost has as many shafts as united did. The place is pickled. One fascinating thing is the avenue of monkey puzzle trees in the woods. I found some cables which looked mining related around there. Thankfully, he's got rid of the undergrowth as the rhodedendrons had gone utterly off the scale in there.
We tried getting as far up the united adit as we could and got under Ware's Scrapyard where there is a blocked adit shaft. The air in there was fine.
Having said, squire must have been a fair size, IIRC, Lean's Reporter quotes a 36" and a 60".
Edity Moan:- Cornwall Archaeological Unit have done a report on the arsenic works before it was obliterated. It's a fine report and one of their efforts which actually achieves something. Sadly, they are not involved in the vandalism/destruction/capping over at Hallenbeagle as we speak. It seems that if someone else is doing something with mine workings, they have to go to the nth degree to ensure environmental/historical considerations are made and all the relevant box tickers and bodies are dragged in at huge expense to record our history before it is wrecked, however if the CCC are involved, the rulebook appears to get chucked out of the window.