Iron Mountain Incorporated Schedules First Quarter 2005 Earnings Release and Conference  Call

April 14, 2005

Boston, MA - Iron Mountain Incorporated (NYSE: IRM), the leader in outsourced records and information management services, today announced that its press announcement of first quarter 2005 results is scheduled to be released before market hours on Thursday, April 28, 2005. A conference call has been scheduled to discuss the first quarter 2005 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, April 28, 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: 800-510-0219
International Dial In: 617-614-3451
Participant Passcode:28929558

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:62271123

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

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