Created by the Smithsonian's National Museum of Natural History, with input from the U.S. Geological Survey and NSSGA, this handsome four-color fold-out brochure was the centerpiece of the museum's 2004 Geology Rocks Family Day.  It is suitable for classroom use as well as for the general public and illustrates how and where aggregates are mined and used throughout the USA.  Includes the anatomy of a highway.