Combe Down and Bathampton Down Mines - Wikipedia
An underground survey of the Firs and Byfield mine areas was carried out in 1994, commissioned by Bath City Council. It was found that approximately 80% of the mines had less than 6 m cover, reducing to 2 m in some places. Irregular mining and robbing stone from supporting pillars had left the mines unstable. An Environmental Impact Assessment was completed for the stabilisation scheme and submitte