had a look around there back in 1990 as part of our college (BTEC Engineering) piss up trip around Wales, it was disguised as an educational trip. We did some really good field trips.
Goonhilly private tour
Devonport Dockyard, lecturer was ex chief engineer on aircraft carriers
Geothermal Hot rocks project
Some blokes (An ex navy mate of our lecturer) house up on Dartmoor who powered his house with his own hydroelectric system.
And the best one. St Austell Brewery tour (the brewery was just across the road from the college) Free bar tasting session after but the 1h college bus trip home wasn't quite as much fun!