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To pass a Senior Earthdog (SE) test, a dog must accomplish the following: Follow a 20-foot-long (6.1 m) scent line to a tunnel entrance that the dog cannot see from ground level; track through a completely dark 30 ft (9.1 m) tunnel containing three 90 degree turns to the rats; not be distracted by a false entrance/exit arrangement; not be ...
The objective was to construct two 7.6 m-diameter (25 ft) rail tunnels, 30 m (98 ft) apart, 50 km (31 miles) in length; a 4.8-metre-diameter (16 ft) service tunnel between the two main ones; pairs of 3.3 m (10 ft 10 in)-diameter cross-passages linking the rail tunnels to the service tunnel at 375 m (1,230 ft) spacing; piston relief ducts 2 m (6 ...
Channel Tunnel: English Channel, United Kingdom/France 50,450 m (31.348 mi) 1994 Second longest railway tunnel until 2016. Longest underwater section, longest international tunnel (2×45 m 2 + 1×18 m 2), running between Folkestone, Kent, and Coquelles, Pas-de-Calais. Railway Single Tube Yulhyeon Tunnel: Seoul Capital Area, South Korea
High Speed 1, the line from London to the Channel Tunnel in Kent has even more capacity – it could triple the number of trains and still have room for more. But it all depends on new entrants ...
By way of comparison, the 50-kilometer (31-mile) Channel Tunnel linking England and France, completed in 1993, cost the equivalent of £12 billion ($13.6 billion) in today’s money.
Channel tunnel traffic to resume as strike action ends. Chris Liakos and Maya Szaniecki, CNN. December 21, 2023 at 2:30 PM. Lex Van Lieshout/ANP/AFP/Getty Images.
Artemisio Tunnel (road), double tunnel, under Mount Artemision, 1.40 km 76 tunnels of the A2 motorway (Egnatia Odos), most notably in parts of Epirus and Western Macedonia , combined length of 99 km, the longest of which are Driskos Tunnel 4.6 km, Metsovo Tunnel 3.5 km, Dodoni Tunnel 3.6 km, Kastania Tunnel 2.2 km, Anilio Tunnel 2.1 km
A service road tunnel runs the entire length of the crossing, but is closed to general use and used only during emergencies and for maintenance. Cyclists – both amateur and professional – have crossed the channel via the tunnel on special occasions. [2] There have been proposals at various times for a second channel tunnel of some kind. [3]