Iron Mountain Incorporated Declares Quarterly Dividend

June 4, 2010

BOSTON, Jun 04, 2010 (BUSINESS WIRE) --The Board of Directors of Iron Mountain Incorporated (NYSE: IRM) today declared a cash dividend of $0.0625 per share on the common stock of the company, payable on July 15, 2010 to shareholders of record at the close of business on June 25, 2010.

About Iron Mountain

Iron Mountain Incorporated (NYSE: IRM) provides information management services that help organizations lower the costs, risks and inefficiencies of managing their physical and digital data. The Company's solutions enable customers to protect and better use their information--regardless of its format, location or lifecycle stage--so they can optimize their business and ensure proper recovery, compliance and discovery. Founded in 1951, Iron Mountain manages billions of information assets, including business records, electronic files, medical data, emails and more for organizations around the world. Visit www.ironmountain.com or follow the company on Twitter @IronMountainInc for more information.

SOURCE: Iron Mountain Incorporated

Iron Mountain Incorporated
Investor Relations Contact:
Stephen P. Golden, 617-535-4799
Vice President, Investor Relations
sgolden@ironmountain.com