Iron Mountain Incorporated Schedules Fourth Quarter and Full Year 2004 Earnings Release and Conference Call

February 9, 2005

Boston, MA - Iron Mountain Incorporated (NYSE: IRM), the leader in outsourced records and information management services, today announced that its press announcement of fourth quarter and full year 2004 results is scheduled to be released before market hours on Wednesday, March 2, 2005. A conference call has been scheduled to discuss the fourth quarter and full year 2004 results and a taped replay of the conference call will be available shortly after the end of the call. Call and replay information are as follows:

Call Date: Wednesday, March 2, 2005
Call Time: 11:00 A.M.(Eastern Time)
Call Hosts:
Richard Reese, Chairman & Chief Executive Officer
John Kenny, EVP & Chief Financial Officer

Domestic Call Dial In: 800-901-5217
International Dial In: 617-786-2964
Participant Passcode:85263550

Online Info: http://www.ironmountain.com at the Investor Relations page Live Simulcast (listen only) available during the call.

Replay available one hour after the conclusion of the call for one week.

Replay Domestic Dial In: 888-286-8010
Replay International Dial In:617-801-6888
Replay Access Code:16744267

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 America and the Pacific Rim. For more information, visit the Company's Web site at www.ironmountain.com