Request Received: 15 October 2025
Dear British Geological Survey,
I am researching the risk of subsidence from non-coal mining (e.g., limestone, ironstone, salt, tin, fluorspar) to residential property in the United Kingdom.
Although I understand BGS is not a public authority for the purposes of the Freedom of Information Act 2000, I note that you operate an access-to-information policy in a similar spirit. I would therefore be grateful for the following:
1. Any digital dataset or map layer you hold that shows the approximate boundaries of former non-coal mining areas where significant voids or shallow workings are recorded.
2. The number of recorded instances of subsidence or crown-hole events attributed to non-coal mining that have affected residential properties in the last ten calendar years (2014-2024), broken down by local authority within the West Midlands.
3. Any published or internal reports since 2020 that assess the susceptibility of residential land to non-coal mining subsidence, including any advice given to local-planning authorities.
4. If the information is already available under licence, please advise the licence terms and cost for academic/private use.
If any part of the request is refused, please provide a refusal notice explaining which exemption is engaged and carry out a public-interest test where appropriate.