To start with Tenwr mine started out as a Welsh coal mine but I now feel like the background buildings make it feel like a Cornish Tin mine.
In atttempt to enhance the perspective of such a narrow layout. The left hand building uses 7mm scale embossed sheet and the middle one uses HO scale sheet and the chimney uses N scale embossed brick sheet. The other structures are G scale. Perhaps I went a bit too far there.