BBC 1 Countryfile 05/02/23 Underground Britain

[Mrs Trellis]

Mostly Cornwall with tin mines, lithium, bats, and some archaeology. Polyhalite mining at Boulby too.

BBC One - Countryfile, Underground Britain

Sean Fletcher unearths the legacy of Cornwall’s renowned tin and copper mining industries.

www.bbc.co.uk

 

[Cantclimbtom]

Been watching in instalments, only just got to the 39 minute mark, very pleased to see "Ben O Cam" there (who I recommend as a YouTube subscription)

 

[Cantclimbtom]

Been Googling stuff around the polyhalite mine. Wow, that's one heck of a haulage adit!
The article is a bit old, but they're talking about it being 37km long at 6m diam

Tunnelling on £4.2bn polyhalite mine moves step closer | New Civil Engineer

The 225m long machine is currently undergoing final checks at a factory in Germany. It will then be disassembled and shipped to the Sirius polyhalite mine

www.newcivilengineer.com