"allan tracy" wrote

I got quite a few replies most informing me that there were absolutely
no cost advantages for the narrower guages and that my suggestions were
a complete waste of time.

Quite a number of tourist railways which have been built on disused
trackbeds of standard gauge railways have gone for a narrow gauge - see, for
example, at opposite ends of England the South Tyneside Railway and the
Seaton Tramway.

Peter