Iron Mountain Incorporated Schedules Second Quarter Earnings Release and Conference Call

July 24, 2003

Boston, MA - Iron Mountain Incorporated (NYSE:IRM), the leader in records and information management services, today announced that its press announcement of first quarter 2003 results is scheduled to be released before market hours on Thursday, July 31, 2003. A conference call has been scheduled to discuss the second quarter 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: Thursday, July 31, 2003
Call Time: 11:00 A.M. (Eastern Time)
Call Hosts: Richard Reese, Chief Executive Officer and John Kenny, Chief Financial Officer
Domestic Call Dial In: (800) 884-5695
International Call Dial In: (617) 786-2960
Access Code: 48069989

Online Info: 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 until August 7, 2003.

Replay Domestic Dial In: (888) 286-8010
Replay International Dial In: (617) 801-6888
Replay Access Code: 20442110

Contact:

Stephen Golden
Investor Relations
Iron Mountain
Phone: 617-535-4799
sgolden@ironmountain.com