tunnels

Detailed photographs with interesting facts explore the underground world of animals, insects, plants, and people who work underground.

"Discusses the technology and engineering used to build very long bridges and tunnels for transportation"--Provided by publisher.

Discusses the function and design of tunnels, their impact on the environment, benefits, drawbacks, and future.

Describes various kinds of tunnels, the methods and materials of their construction, and amazing or disastrous examples.

Color photos fill this overview of Boston's "Big Dig"--the Central Artery/Tunnel Project--which began in 1991, designed to relieve the city's traffic problems; describes the project's origins and planning stages and the work involved in its completion.

Simple text and photographs describe the digging of a tunnel and provide information on the workers and equipment needed.

Explains the many techniques used at various stages of building tunnels under streets and rivers or through mountains.

Describes how roads and tunnels are constructed and provides a historical perspective.

Provides descriptions and illustrations of some of the largest structures in the world and discusses how they came to be built, including the Great Pyramid, the Gateway Arch in St. Louis, the temple at Abu Simbel in Egypt, and others.

Text, illustrations, and projects explore how tunnels, skyscrapers, and towers are built and how they function. Includes information on lighthouses, subways, and underwater tunnels.