It is a few years since we were last there.
I cannot understand why it suggested that these mines were trashed by mineral collectors!
A few clear crystals of barite for faceting hardly constitutes trashing!
No the mine dumps were worked for barite, and once these were exhausted, the operators," cleared up the site!
We found 2 or 3 open levels, Atkinson's level is knee deep, and has a major fall, where it meets, the vein, it may be able to bipass it but then you would have to be a good climber.
I would however suggest it is ' a good weather' trip, as there is no shelter if things turn nasty.