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35. Rosalind Brewer
President, Walmart South
Wal-Mart Stores (WMT)
Previous rank: New
Age: 48

This onetime scientist at Kimberly-Clark has gone from overseeing Wal-Mart's operations in Georgia to the Southwest region and now the entire South. In her expanded role, which started in January, she touches everything from purchasing to real estate across 1,200 stores. Revenue in territory: $85 billion plus.

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Last updated September 30 2010: 2:47 PM ET
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