From building skyscrapers to loading freight trains, from tearing down old houses to mining fuel, heavy equipment is everywhere! Children will enjoy taking a close-up look at these important machines, including terrific tractors, bucket wheel excavators, and even a super space shuttle crawler—the largest self-powered tracked vehicle in the world. Great-looking and large shots showcase extra-big tires, a tractor’s advanced hydraulic system, a control stick for steering, a bulldozer blade, and the long, wide tracks of a crawler crane. And kids will really dig into fascinating facts and information on heavy machine achievements such as building the Chunnel, the longest tunnel on earth. Procure heavy equipment up close and compare.