You might want to look at this blog for the Perus-Pirapora Railroad near Sao Paulo, Brazil. This railroad is the EBT of the south, 600mm (2-footer) with many Baldwin, Alco, and Porter steam locomotives that have sat dormant since the early 1980s. Recent work by NGDF contributor Thor Windbergs has helped them to revived a small diesel, get it running, and relocated it from one of the storage locations to the current museum site. peruspirapora.blogspot.com
And if you don't read Portuguese, you might try browsing the babelfish translated version: