The Caterpillar 797B is an ultra class mining truck manufactured by Caterpillar Inc. The 797B is the largest mechanical dump truck in the world.
This truck is so large that it can not be driven on the highway to location, so it must be taken there in pieces and constructed at the job site. A single tyre of the Caterpillar 797B (the Michelin 59/80R63), costs $40,000, and is 13 feet (4 meters) high.
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