. . "Seven Wonders of the Industrial World" . . . . "2003-09-04" . . . . . . . . . . . . . "The Hoover Dam" . . "''Seven Wonders of the Industrial World: The Sewer King'' episode" . . . . . . . . . "Seven Wonders of the Industrial World" . . . . . . . . "7" . . . . . . . "Seven Wonders of The Industrial World: The Line" . . . . . "The Sewer King" . . . . . . . . "3000.0" . . "2003-10-16" . . .