FORTUNE Names Iron Mountain as one of America's Most Admired Companies for Diversified Outsourcing for Third Year in a Row

Boston, MA - March 14, 2007 - Iron Mountain Incorporated (NYSE: IRM), the global leader in information protection and storage services, has been selected by FORTUNE magazine as one of America's Most Admired Companies for the Diversified Outsourcing Industry for the third consecutive year. In the magazine's March 19th issue, available now at Fortune.com, Iron Mountain is ranked 2nd in the Diversified Outsourcing Industry, moving up one spot from last year, and five spots from 2005.

"Being recognized again by FORTUNE is a testament to Iron Mountain's employees who work hard every day to deliver the best information protection and storage solutions that the industry has to offer," said Iron Mountain Chairman and CEO Richard Reese. "We are honored to be a part of this renowned list of America's Most Admired Companies and will continue to focus on delivering innovative and proven solutions to our customers."

Iron Mountain's industry leadership has been heralded by some of the country's most respected and widely read publications. Most recently, Forbes magazine named Iron Mountain as one of "America's 400 Best Big Companies" and was also recognized for its innovative technology practices on the InformationWeek 500 list. Additionally, Iron Mountain received the 2006 CODiE Award for "Best Storage Software Solution," which is given annually by the Software & Information Industry Association (SIIA), and was also listed on the Boston Globe's "Globe 100" list of the best performing companies in Massachusetts.

FORTUNE magazine's list of the Most Admired Companies is the definitive report card on corporate reputations. To create the 63 industry lists, FORTUNE magazine's survey partner, Hay Group, asked executives, directors, and analysts to rate companies in their own industry on eight criteria, from investment value to social responsibility.

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.