UNITED STATES - NOVEMBER 14:  An employee walks into Koch Industries Inc. headquarters in Wichita, Kansas, on November 14, 2005. Koch agreed yesterday to buy Georgia-Pacific for $13.2 billion in cash, adding Dixie paper cups, cardboard boxes and lumber to fuel and chemical businesses to become the largest closely held company in the U.S.  (Photo by Larry W. Smith/Bloomberg via Getty Images)