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derbyshire caving association | 28DaysLater.co.uk

derbyshire caving association

  1. Abandoned-Sheffield

    Report - Silica Bricks Ganister Mine Sheffield, November 2019

    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...
  2. CaverPete

    Information - Access to Abandoned Mines in the UK

    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...
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