The Harecastle railway tunnel at Kidsgrove was built in 1848 and has been disused since the 1960s.
Meanwhile, on the other side of the planet, China completed its first underwater railway tunnel on Saturday.
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Soviet engineers began to dig a railway tunnel to Chechnya in the 1980s, but the project was abandoned.
Discovered in a former railway tunnel by the Soviet "trophy brigades" in 1945, it was whisked away to the U.S.S.R.
Devonshire railway tunnel at Bloomfield will also form part of the new Two Tunnels Greenway route, which runs through Linear Park and over the Tucking Mill Viaduct.
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In 1990, Engineers digging a railway tunnel under the Channel broke through the last dividing rock and joined Britain to mainland Europe for the first time since the Ice Age.
Meanwhile, trains, which carry about a third of all transalpine freight, have to wind their way up and down steep gradients, slowly and fairly lightly laden, to reach the existing St Gotthard railway tunnel, which was opened in 1882.
The group backs a "hidden road", including a tunnel under the railway line.
The 17-mile (26km) route will follow an old Great Western Railway branch line through a tunnel at Grenofen built by Isambard Kingdom Brunel.
Railway historian Basil Jeuda said the tunnel was "an important link in the development of a national rail system".
Two years later, a financial daily, Milano Finanza, reported that Rocksoil's accounts showed that it had won a contract, as part of the Lyons-Turin railway link, for an access tunnel on the French side of the border.
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Mr Jeuda, who has written books on the history of the North Staffordshire Railway, said the building of the tunnel was authorised by an Act of Parliament in 1846.
But he said the French Government had a good record in dealing with war graves and had managed to build the Channel Tunnel and the TGV high speed railway line without causing significant damage to cemeteries.
The 68-mile high speed railway line runs from St Pancras to the Channel Tunnel opening at Folkestone in Kent.
They included a tunnel, a bridge or for road traffic to use a nearby railway when trains were not using it.
The pair had different visions, with Watkin, who wanted to build a Channel tunnel rail link to France, seeing the Metropolitan as a mainline railway, while Forbes preferred shorter extensions.
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Written evidence suggested the railway was operating by 1793 and Mr Griffin says they were able to prove the line must have run through the tunnel.
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