Cornish Mines and Engines at Pool is run by the National Trust. There are two sites of interest, both a part of the Cornish Mining World Heritage Site:
The first is Taylor's Shaft that houses a 90in, 52½ tonne Cornish beam engine and the Industrial Discovery Centre that includes an Audio Visual display located in the former boiler house and also offers a walk through the exposed brick boiler flue and chimney. It is situated behind Morrisons supermarket.
Across the road by Macsalvor's is Michell's Whim, a winding engine now operated by electric motor. There is a car park and small interpretation centre.
Geevor is definitely worth a visit as it has just been refurbished and a new Hard Rock Mining Museum opened and there is a short underground experience through the workings of Wheal Mexico. Levant is also a great place to go if you like steam engines, as is King Edward Mine Museum that has some of the last examples of tin dressing machinery left in Cornwall and an operational battery of Californian stamps that are fired up on special open days. I was amazed by the attempts to reconstruct a frue vanner when I called in earlier this year.
Also worth a visit is Poldark Mine in Wendron near Helston. Here you can get a trip underground through the workings of the C18th Wheal Roots - the geology is fascinating - especially so if you are fortunate enought to be taken round by Site Director, Richard Williams. The museum at the surface is also very interesting and houses a lot of the artefacts that once formed part of the Holman collection. There is also the Goonvean engine to inspect there.
Robinson's engine is not yet accessible to the public, but it will be the jewel in the crown of a new heritage centre that will be opened as part of the Heartlands Project. It will be a fine day in Cornwall to see this grand old engine working again, but not in steam alas.
If you're interested in china clay, then the Wheal Martyn China Clay Heritage Centre near St Austell is a must. Here you can see flat rods, once common on many Cornish mines, in operation.
Enjoy Cornwall, it's a fabulous place for mining heritage enthusiasts.
Den heb davaz a gollaz i dir