Simple text and color photographs depict the history, construction, maintenance, and functions of dams. Highlights the Hoover Dam and how it makes electricity.
"From mining tunnels to the Channel Tunnel, this book explores how they are built, how they are used, and the engineer's job to build and plan for them."--Provided by publisher.
"[Teaches young readers] about bridges. From truss bridges to suspension bridges, this book explores how they are built, how they are used, and the engineer's job to build and care for them"--Provided by publisher.
