I shall now re-state what I have previously said.  (1) There is barely enough properly sourced material here for a single article, let alone splitting it into two. (2) Splitting the article prematurely will lead to both articles being proposed for a merge. (3) If you do a simple google search for "Mount Cuthbert and Dobbyn railway" you will find plenty of independent references.  I conclude that this article has a valid title that can eventually be expanded with good sources and does not need to be split.  (4) Before placing a RfC on any further pages, please do some research of your own. -