33. Iron Mountain

Headquarters: Boston Sector: Technology Symbol / Exchange: IRM / New York Employees: 20,100 RANK 8/100 Chief executive: C. Richard Reese Market value: $5.31 billion RANK 12/100 2007 revenue: $2.73 billion RANK 13/100 2007 net income: $153.1 million RANK 21/100 On the net: ironmountain.com

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