Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Dong Phayayen-Khao Yai Forest Complex' has mentioned 'Railway' in the following places:
Occurrence Sentence Text Source
The survey for the building of the Northeastern Line of the State Railway of Thailand began in 1887.
By 1887 the Siamese government decided to build a railway line from Bangkok to Korat through Ayutthaya and commissioned British Railway contractors to make a survey.
The first section of what is now the Northeastern Line, the railway line to Korat across the mountains opened in 1900.