Iron Mountain Recognized by Forbes Magazine as one of America's "400 Best Big Companies"

Boston, MA - January 16, 2007 - Iron Mountain Incorporated (NYSE: IRM), the global leader in information protection and storage services, has been selected by Forbes magazine as one of America's 400 Best Big Companies for the first time. In the magazine's January 8th issue, Iron Mountain is listed among 21 Business Services and Supplies companies.

Iron Mountain's reputation as a leader has been reinforced by multiple recognitions over the years. Most recently, Iron Mountain was recognized by Fortune magazine as one of America's Most Admired companies for the Diversified Outsourcing Industry for the second consecutive year, and was also listed on the Boston Globe's "The Globe 100" list of the best Massachusetts companies. The Company has also been distinguished on the InformationWeek 500 for innovative technology practices and named among Computerworld's "Top 100 Best Places to Work in IT."

"We're proud to have been recognized by Forbes magazine as one of America's Best Big Companies," said Iron Mountain Chairman and CEO Richard Reese. "Our employees work very hard to ensure that the needs of our customers are met, by helping them to reduce their costs and mitigate their compliance risks with our information management and data protection solutions. Being recognized by Forbes magazine is a tribute to Iron Mountain employees and our continued steady growth."

As the global leader in information protection and storage services, with 55-plus years of experience, Iron Mountain has earned the solid reputation with customers as the most qualified solutions provider for protecting valuable company information. With the expansive growth of electronic information in the workplace, the Company has continued to evolve to meet information management needs. With the launch of its digital services offerings, Iron Mountain became the only service provider of its kind to bridge the paper and digital worlds.

About Iron Mountain

Iron Mountain Incorporated (NYSE:IRM) helps organizations around the world reduce the costs and risks associated with information protection and storage. The company offers comprehensive records management and data protection solutions, along with the expertise and experience to address complex information challenges such as rising storage costs, litigation, regulatory compliance and disaster recovery. Founded in 1951, Iron Mountain is a trusted partner to more than 90,000 corporate clients throughout North America, Europe, Latin American and Asia Pacific. For more information, visit the company's Web site at www.ironmountain.com.