View source for Khwaja Amran Railway Survey

The '''Khwaja Amran Railway Survey''' was undertaken in 1887 

The section from [[Bostan]] to [[Chaman]] through the Khwaja Amran mountains became known as the '''Chaman Extension Railway'''. Built to a steep ruling gradient it rises to 6394 feet (1948m) at [[Shelabagh]] and drops to 4304 feet (1312m) at [[Chaman]]. Six tunnels were needed in its 68 mile length including the mighty [[Khojak Tunnel]] which at 12870 feet (3922m), was the longest tunnel in India.
<ref>[https://books.google.co.uk/books?id=ETIxCLujm30C&pg=PA58&lpg=PA58&dq=Khwaja+Amran+Railway+Survey&source=bl&ots=TmnrcnD1hp&sig=wI6ZwOQLsVdhdCaWGUFUSHgN7UQ&hl=fr&sa=X&ved=0ahUKEwiImbKZ4e_NAhWD0hoKHXnqBDcQ6AEIUTAG#v=onepage&q=Khwaja%20Amran%20Railway%20Survey&f=false Google Books "Engines of Change: The Railroads that Made India" by  Ian J. Kerr, page 58]; Retrieved  13 Jul 2016</ref>

The line was opened in 1891 as part of the '''North Western Railway''' network. 

== References ==
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[[Category:Railway Surveys]]
[[Category:Railways]]