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The Dalkey Atmospheric Railway (Unofficial opening 19 August 1843, official opening 29 March 1844 - 12 April 1854) was an extension of the Dublin and Kingstown Railway
Dublin and Kingstown Railway

The Dublin and Kingstown Railway , which opened in 1834, was Ireland?s first railway. It linked Pearse railway station in Dublin with D?n Laoghaire West Pier in County Dublin....
 to Atmospheric Road in Dalkey
Dalkey

Dalkey is a town located in County of Dun Laoghaire-Rathdown, Republic of Ireland. It was originally founded as a Viking settlement and became an important port during the Middle Ages....
. It used part of the Dalkey Quarry
Dalkey Quarry

Dalkey Quarry is a disused granite quarry located in the Dublin suburb of Dalkey. It was used for quarrying during the 19th century, and is now part of Killiney Hill Park, a public park....
 industrial tramway, which was earlier used for the construction of Kingstown (Dún Laoghaire) Harbour
Dún Laoghaire

D?n Laoghaire is a suburban seaside town and county town of County of Dun Laoghaire-Rathdown, Republic of Ireland.The town is situated some 12 kilometres south of Dublin city centre, and is a major port of entry from Great Britain....
. It was both the first and the longest operating railway of its type in the world.

The standard gauge
Standard gauge

The standard gauge is a widely-used rail gauge. Approximately 60% of the world's existing railway lines are built to this gauge . The distance between the inside edges of the rails of standard gauge track is ....
 line was in length with an average uphill gradient of about 1 in 110.






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The Dalkey Atmospheric Railway (Unofficial opening 19 August 1843, official opening 29 March 1844 - 12 April 1854) was an extension of the Dublin and Kingstown Railway
Dublin and Kingstown Railway

The Dublin and Kingstown Railway , which opened in 1834, was Ireland?s first railway. It linked Pearse railway station in Dublin with D?n Laoghaire West Pier in County Dublin....
 to Atmospheric Road in Dalkey
Dalkey

Dalkey is a town located in County of Dun Laoghaire-Rathdown, Republic of Ireland. It was originally founded as a Viking settlement and became an important port during the Middle Ages....
. It used part of the Dalkey Quarry
Dalkey Quarry

Dalkey Quarry is a disused granite quarry located in the Dublin suburb of Dalkey. It was used for quarrying during the 19th century, and is now part of Killiney Hill Park, a public park....
 industrial tramway, which was earlier used for the construction of Kingstown (Dún Laoghaire) Harbour
Dún Laoghaire

D?n Laoghaire is a suburban seaside town and county town of County of Dun Laoghaire-Rathdown, Republic of Ireland.The town is situated some 12 kilometres south of Dublin city centre, and is a major port of entry from Great Britain....
. It was both the first and the longest operating railway of its type in the world.

The standard gauge
Standard gauge

The standard gauge is a widely-used rail gauge. Approximately 60% of the world's existing railway lines are built to this gauge . The distance between the inside edges of the rails of standard gauge track is ....
 line was in length with an average uphill gradient of about 1 in 110. Vacuum power via a pipe was used for the ascent to Dalkey, speeds of up to being achieved, and the return journey was by means of gravity. The vacuum tube fell short of the Dalkey station, and the train relied on momentum for the last stretch of the journey.

William Dargan
William Dargan

William Dargan , an engineer, often seen as the father of Irish railways came from County Laois, Ireland. Born in 1799, he constructed Ireland's first railway from Dublin to D?n Laoghaire in 1833....
 was the contractor and Charles Vignoles the engineer. The atmospheric equipment was supplied by Samuel Clegg
Samuel Clegg

Samuel Clegg , British civil engineer.Clegg was born at Manchester on 2 March 1781, received a scientific education under the care of Dr. Dalton....
 and Jacob and Joseph Samuda
Samuda Brothers

Samuda Brothers was an engineering and ship building firm at Cubitt Town on the Isle of Dogs in London, founded by Jacob Samuda and Joseph d'Aguilar Samuda....
.

After closure, the line was converted to the Irish standard gauge of 5 feet 3 inches (1600 mm.) The path of the line now forms part of the DART
Dublin Area Rapid Transit

The Dublin Area Rapid Transit is part of the Dublin Suburban Rail in Ireland, running mainly along the coastline of Dublin Bay on the Trans-Dublin route, from Greystones in County Wicklow, through Dublin to Howth and Malahide in County Dublin....
 route.

See also

Atmospheric railway
Atmospheric railway

An atmospheric railway is a railway that uses air pressure to provide power for propulsion. A pneumatic tube is laid between the rails, with a piston running in it suspended from the train through a sealable slot in the top of the tube....