It is very sad I was one of the UK founder members, unfortunately they have suffered what many organisations in the Caving and Mining world have and that is a lack of recruitment. With all sorts of changing circumstances of the original group it has gone the way other groups will
There have been quite a few success stories in terms of conservation and interpretation of the mining heritage such as Glendalough, Tankardstown, Allihies, to some extent Avoca and of course Glengowla show mine that didn't exist when the society was set up
Mike