Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS
BUILDING BIG Image with 5 links within the image.
_
Tunnel Basics
BUILDING BIG Home Page BUILDING BIG Site Map BUILDING BIG Labs BUILDING BIG Databank BUILDING BIG Glossary
Bridges
Domes
Skyscrapers
Dams
Tunnels
Buy the DVD
_  
Section of Brunel's tunnel shield
Used to dig Thames Tunnel
London, England

Image of Brunel's tunnel shield
Reproduced by Kind Permission of the Institution of Civil Engineers, London

Back to Tunnel Basics

  _
_