It digs up dirt. It packs earth down hard. This earthmover is on the move!How do earthmovers work? And what kinds of jobs do earthmovers do? Read this book to find out!Learn all about mighty machines in the Vroom-Vroom seriespart of the Lightning Bolt Books™ collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt Books™ bring nonfiction topics to life!