Well, it all gets complicated up there! Half the problem is that a mine may cover many acres, with several named levels and shafts within the mine. And the mine next door may have features with similar names. Often the levels etc get added to the database as seperate features. I'm not sure if there has ever been any consensus on a way around this.
This is Lanshaw Level, presumably the one in Dunham Chris:
๐Personal-Album-2571-Image-49337[linkphoto]Personal-Album-2571-Image-49337[/linkphoto][/link]
Unfortunately most of the other levels around there don't have such handy labels. There is another level in Gateup Gill that would head towards Hebden Moor, Tag Bale Level. On the opposite side of the valley to Red Scar Level. Once again, without the book, I won't speculate.
P.S. Tom, I sent you a mail on Mine Explorer re your Perseverence Level pics.