This one is in the last ever Wycliffe episode "Lands End". It's unusual in that the engine house appears to be in a wood. The only similar engine house surrounded by trees or shrubs that I can find in my photo collection is Hawke's Shaft, Killifreth. However my photo isn't taken from the side (like this view) so I can't be sure.
Can anybody make a better guess on this mine's identity?
[photo]Personal-Album-7664-Image-62150[/photo]