joe, there is a old power plant in columbia s.c.that is a hydro plant that used too supply power to the old cotton mill, but now supplies some power to the city. it is owned south carolina electric & gas. they are very slow moving machines. not no where as old as these but just as cool!THANKS for some great photos.do they still use parts of it?hope they keep it as it is or turn it into a musseum.be nice to tour.