Not only one blade Helmut but laid on a curve ! . Crazy mine video link - I love the human "pantograph" ! Just proves "there is a prototype for everything".
It is not a loco Ray, it's a mobile diesel generator set mounted on an old tram chassis.
The system is mostly cable hauled & some handraulic (i.e. human propulsion !).
There are no locos but there was a long term plan to build a battery electric replica of a loco from an adjacent mine that had 3 old truck starter motors connected by a chain drive. Looking at the photo of 3 diverging routes the central road leads to the head of a severe grade - you can see the vertically mounted cable rollers on posts to left-centre of the photo. Prime mover is an ancient early type water turbine powered via a dam uphill from the mine - completely green !!.
Wow looks like a sweet 1:1 scale layout. To me a blade switch seems somewhat easier to make that a standard switch(I maybe wrong I haven't ever built one). I'm currently fixing up rail(I have to recut it and drill new bolt holes) for a 24" gauge line around my property here in Arkansas. I think a blade switch leading to what will be the two stall engine house would be cool.