HOOVER DAM
'(<a href="http://www.j-archive.com/media/2004-06-04_DJ_14.jpg" target="_blank">Jimmy of the Clue Crew reports from Hoover Dam.</a>)  Between 1933 & '35, 4.4 million cubic yards of <a href="http://www.j-archive.com/media/2004-06-04_DJ_14.wmv">this</a> were laid in the dam, enough to pave a highway from San Francisco to New York City'
concrete