No 8: Anne Cox Chambers
Net Worth: $15.5 billion
Source Of Wealth: media
Anne Cox Chambers, 94, is the majority owner of privately-held media conglomerate Cox Enterprises and continues to sit on the board of directors.
No 9: Iris Fontbona
Net Worth: $15.5 billion
Source Of Wealth: mining
Iris Fontbona is the widower of the late billionaire Andronico Luksic, who died of cancer in 2005. He left his business to his wife and three sons, Jean-Paul, Andronico, and Guillermo Luksic.