<SUBMISSION>
<ACCESSION-NUMBER>0000908737-01-500210
<TYPE>8-K
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<PERIOD>20010912
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<ITEMS>7
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<CONFORMED-NAME>IRON MOUNTAIN INC/PA
<CIK>0001020569
<ASSIGNED-SIC>4220
<IRS-NUMBER>232588479
<STATE-OF-INCORPORATION>PA
<FISCAL-YEAR-END>1231
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<FILE-NUMBER>001-13045
<FILM-NUMBER>1738169
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<BUSINESS-ADDRESS>
<STREET1>745 ATLANTIC AVENUE
<CITY>BOSTON
<STATE>MA
<ZIP>02111-
<PHONE>6175354766
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<STREET1>745 ATLANTIC AVENUE
<CITY>BOSTON
<STATE>MA
<ZIP>02111-
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<FORMER-CONFORMED-NAME>PIERCE LEAHY CORP
<DATE-CHANGED>19960807
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<FILENAME>imis8k.txt
<TEXT>
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934

      Date of Report (Date of earliest event reported): September 12, 2001

                           IRON MOUNTAIN INCORPORATED
                           --------------------------
             (Exact name of registrant as specified in its charter)

      Pennsylvania                   1-13045                     23-2588479
      ------------                   -------                     ----------
(State or other jurisdiction       (Commission                  (IRS Employer
    of incorporation)              File Number)              Identification No.)


                               745 Atlantic Avenue
                           Boston, Massachusetts 02111
--------------------------------------------------------------------------------
          (Address of principal executive offices, including zip code)




                                 (617) 535-4766
--------------------------------------------------------------------------------
              (Registrant's telephone number, including area code)






<PAGE>



Item 5.  Other Events

         On September  12, 2001,  Iron  Mountain  Incorporated  (the  "Company")
announced  that the record  date with  respect to the  October 1, 2001  interest
payment on its 8 5/8% Senior  Subordinated Notes due 2013 (CUSIP No. 462846 AA4)
shall be changed to September 24, 2001. For more information,  see the Company's
press release,  dated September 12, 2001, which is attached  herewith as Exhibit
99 and incorporated by reference herein.

Item 7.  Financial Statements, Pro Form Financial Information and Exhibits

(c)      Exhibits.

Exhibit No.       Item

99                Press Release, dated September 12, 2001.


<PAGE>




                                   SIGNATURES


         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                    IRON MOUNTAIN INCORPORATED
                                    (Registrant)




                                    By: /s/  John F. Kenny, Jr.
                                        John F. Kenny, Jr.
                                        Executive Vice President and
                                        Chief Financial Officer


Date:   September 14, 2001



</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>3
<FILENAME>ex99.txt
<TEXT>
FOR IMMEDIATE RELEASE:

Contact:   John F. Kenny, Jr.
           Executive Vice President and
           Chief Financial Officer
           (617) 535-4799

     Iron Mountain Incorporated Announces New Record Date for 8-5/8% Senior
                          Subordinated Notes Due 2013

Boston,  MA--September 12, 2001--Iron  Mountain  Incorporated  (NYSE:  IRM), the
leader in records and information  management services,  announced today that it
shall  establish a special  record date of September 24, 2001 for the October 1,
2001 interest  payment on its 8-5/8%  Senior  Subordinated  Notes due 2013.  The
September 24, 2001 special record date shall apply solely to the October 1, 2001
interest payment date, and supercedes the September 15 record date that normally
applies to October 1 interest payments on the notes.

Iron  Mountain  Incorporated  is the global  leader in records  and  information
management  services.  Iron Mountain currently provides services to over 125,000
customer accounts, including more than half of the Fortune 500, in 77 markets in
the United  States and 44 markets  outside  of the United  States.  The  Company
operates over 625 records  management  facilities in North  America,  Europe and
Latin America.



                                       ###

</TEXT>
</DOCUMENT>
</SUBMISSION>
