Iron Mountain Named to Boston Globe 100
Nineteenth-Annual Listing Ranks Top Massachusetts-Based Public Companies

BOSTON, MA - May 24, 2007 - Iron Mountain Incorporated (NYSE:IRM), the global leader in information protection and storage services, has been named to the Boston Globe's "Globe 100," a list of top performing public companies in Massachusetts.

Based on a composite score derived from financial data for the four quarters ending December 31, 2006, Iron Mountain was ranked 56th among Massachusetts-based companies whose stock is publicly traded on NASDAQ, New York Stock Exchange or American Stock Exchange.

Additionally, Iron Mountain was ranked fourth among top performing "Technology" companies, 15th in the "Market Value 50", a ranking of companies by market capitalization, 17th in the "Sales 50", a ranking based on 2006 revenue, and ninth among the largest Massachusetts-based employers (worldwide). It is the fourth time that Iron Mountain has been included in the Globe 100.

"The companies in the Globe 100 have distinguished themselves in not only their respective fields but among other Massachusetts businesses," said Globe business editor Shirley Leung. "This year's Globe 100 highlights the broad spectrum of both old and new Massachusetts companies, from cutting-edge sectors like biotechnology to long-standing staples like construction."

To qualify for the Globe 100, a company must have been public for the entire 2006 calendar year and have reported a positive net income for both 2005 and 2006.

"We are very pleased to once again be included in the Boston Globe's list of leading public companies in the Commonwealth," said Iron Mountain Chairman and CEO Richard Reese. "It is a testament to the hard work and dedication of Iron Mountain's employees and management team who have made the company what it is today - the global leader in information protection and storage services."

The Globe 100, now in its 19th year, ranks Massachusetts-based public companies based on financial data from the four quarters ending closest to December 31, 2006, and for corresponding quarters a year earlier.

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.

About the Boston Globe
The Boston Globe is wholly owned by The New York Times Company (NYSE: NYT), a leading media company with 2006 revenues of $3.3 billion, including The New York Times, the International Herald Tribune, The Boston Globe, 15 other daily newspapers, WQXR-FM and more than 30 Web sites, including NYTimes.com, Boston.com and About.com. The Company's core purpose is to enhance society by creating, collecting and distributing high-quality news, information and entertainment.