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How are Underwater tunnels made.

How are Underwater tunnels made. By: Grayson & Don. Question 1. Question: What is the biggest underwater tunnel? Answer: The Seikan Tunnel is a 33.46 mi railway tunnel in Japan, with a 14.5 mi portion under the sea. It is the longest undersea tunnel in the world.

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How are Underwater tunnels made.

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  1. How are Underwater tunnels made. By: Grayson & Don

  2. Question 1 Question: What is the biggest underwater tunnel? Answer: The Seikan Tunnel is a 33.46 mi railway tunnel in Japan, with a 14.5 mi portion under the sea. It is the longest undersea tunnel in the world. We Got It On: Wikipedia

  3. Question 2 Question: What is the first underwater tunnel? Answer: The ThamesTunnel is the first underwater tunnel, built beneath the River Thames in London. We Got It On: Wikipedia

  4. Question 3 Question: What was the shape of the first underwater tunnel? Answer: The shape of the first underwater tunnel is dome shaped. We Got It On: Grolier

  5. Question 4 Question: How deep was the first underwater tunnel? Answer: The first underwater tunnel was 75 feet or 23 meters below the river's surface. We Got It On: Media Center Website

  6. Question 5 Question: Were there leaks in the first underwater tunnel? Answer: Yes, there were leaks in the first underwater tunnel. We Got It On: Wikipedia

  7. Question 6 Question: What are underwater tunnels made of? Answer: The underwater tunnel is made of steel and concrete. We Got It On: Wikipedia

  8. Question 7 Question: Have underwater tunnels collapsed? Answer: Yes, they have collapsed. We Got It On: Wikipedia

  9. The Main Question Question: How are underwater tunnels made? Answer: A tunnel shield, a rectangular cast iron wall with dozens of small shutters, let people build tunnels underwater. Marc Bunnel, a French Engineer invented the tunnel shield. We Got It On: World Book

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