Ho hum all laudable sentiments, just don't "willy wave" it, there's plenty of us that pack out others crap we just go about it quietly.

The Deep Mine tour at Llechwedd might be suitable. Go Below don't take people as young as four years old...

I honestly cannot remember what size through bolts we used. I suspect 10mm long Raumer or the standard Petzl ones, but I cannot be 100%...

There has been no change in ownership, at least not according to the lease holder last time I asked.