This year's list features nine newcomers, several of whom hail from the once male-dominated defense industry.
Rank Name Company Age
30 Mary Callahan Erdoes J.P. Morgan Chase 43
32 Marillyn Hewson Lockheed Martin 56
33 Linda Gooden Lockheed Martin 57
35 Rosalind Brewer Wal-Mart Stores 48
39 Gina Drosos Procter & Gamble 47
43 Susan Wojcicki Google 42
48 Shari Ballard Best Buy 44
49 Phebe Novakovic General Dynamics 52
50 Katie Cotton Apple 44
From the October 18, 2010 issue
Which of Fortune’s Most Powerful Women do you admire most?
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  • Hillary Clinton
  • Oprah Winfrey
  • Elizabeth Warren
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