derbyshire caving association

A ganister (or sometimes gannister) is hard, fine-grained quartzose sandstone, or orthoquartzite, used in the manufacture of silica brick typically used to line furnaces. Ganisters are cemented with secondary silica and typically have a characteristic splintery fracture. You can check out all...

Hi all. Following on from the recent post about Mandale Mine, I thought some information about the legal status of old mines and why they are often locked/gated would be a benefit to post on it's own thread. I am currently the volunteer Projects Officer for the Derbyshire Caving Association. I...