Many years ago, like late 1950's, there was going the rounds of clubs two films made, I think by Shell, which were of the last two working Beam Engines in Cornwall.
I have asked of the Trevithick Society, of which I am a Member, I have looked at a number of web sites but can't find any trace.
Does any one out there know if they are still around, if so can they still be viewed and if so it what format.