Exhibit 99.1

   Iron Mountain Incorporated Reports Third Quarter 2003 Financial Results

    * Total Revenues are $382 Million; Up 15%

    * Operating Income is $77 Million; Up 17%

    * Net Income is $0.17 per Diluted Share

    * Company Reaffirms 2003 Full Year Guidance

    BOSTON, Oct. 29 /PRNewswire-FirstCall/ -- Iron Mountain Incorporated
(NYSE: IRM), the leader in records and information management services, today
reported higher revenues and operating income for the quarter ended September
30, 2003.  In addition, the Company reaffirmed its previously released
guidance for the full year 2003.  Net Income is $0.17 per diluted share for
the quarter.
    Iron Mountain's total consolidated revenues for the quarter ended
September 30, 2003 grew to $382 million, an increase of 15% compared with the
quarter ended September 30, 2002.  For the quarter, storage revenues grew 17%
and service revenues grew 12% compared to the prior year.  Storage revenues,
which are considered a key performance indicator for the records and
information management services industry, are largely recurring since
customers typically retain their records for many years.  This marks the 59th
consecutive quarter for which the Company has reported increased storage
revenues.
    For the third quarter of 2003, the storage and service revenue internal
growth rates were 9% and 2%, respectively, yielding a total internal revenue
growth rate of 6%.  The storage internal growth rate continued its upward
trend and core service revenues, at 9%, grew in line with storage growth.
Overall service revenue growth was impacted by a decline in complementary
service revenues primarily in the Company's North American business units.
The Company experienced lower levels of special projects and product sales,
most notably data product sales, compared with the same periods in 2002.  The
year over year comparison of complementary service revenues was made more
difficult by the particularly strong service revenues reported in the third
quarter of 2002.  The Company believes that service revenues will likely grow
at a slower rate than storage revenues for the balance of the year due to
continued lower growth rates in complementary services.
    Richard Reese, the Company's Chairman and CEO, stated, "The Company
continued to report solid results for the third quarter with both revenue and
operating income at or above the top end of our guidance.  Storage internal
growth rates continued to tick up, margins expanded and we continued to
generate free cash flow before acquisitions and investments on a year-to-date
basis.  As we anticipated, we saw slower internal growth rates in certain
complementary service lines.  In Europe, our integration of the Hays IMS
acquisition is proceeding as planned and here in the U.S., we continued to
expand our secure shredding footprint via acquisitions and Greenfield start-up
operations."
    Today's earnings announcement introduces a non-GAAP measure, operating
income before depreciation and amortization, or OIBDA, which the Company will
report going forward as one of its key financial metrics.  Operating income
before depreciation and amortization is the metric that most closely resembles
what the Company has historically referred to as Adjusted EBITDA.  Currently,
the only difference between the two metrics is the inclusion in OIBDA of gains
and losses on the disposal or write-downs of property, plant and equipment,
net.  Prior to 2003, other charges such as merger-related expenses and stock
compensation expense had been excluded from Adjusted EBITDA as well.
    The Company believes that operating income before depreciation and
amortization is useful because it is an important financial measure used in
evaluating the Company's performance, as it is an internally generated source
of funds for investment in continued growth and for servicing indebtedness.
Holders of the Company's publicly issued debt use OIBDA-based calculations,
referred to as Adjusted EBITDA, as important criteria for evaluating the
Company.  As a result, all of its bond indentures and covenants include OIBDA-
based calculations, called Adjusted EBITDA, as primary measures of financial
performance.  Operating income before depreciation and amortization is not a
measurement of financial performance under accounting principles generally
accepted in the United States, or GAAP, and should not be considered as a
substitute for operating or net income or cash flows from operating activities
(as determined in accordance with GAAP).  In accordance with Securities and
Exchange Commission Regulation G, a reconciliation of OIBDA to Operating
Income to Net Income appears later in this press release.
    Operating income before depreciation and amortization was $110 million, or
28.9% of revenues, for the quarter ended September 30, 2003 compared to $95
million, or 28.5% of revenues, for the quarter ended September 30, 2002.
    Operating income for the third quarter of 2003 was $77 million, or 20% of
revenues, compared to $66 million, or 20% of revenues, for the same period in
2002.  Net income for the quarter was $15 million, or $0.17 per diluted share,
compared to $16 million, or $0.18 per diluted share, for the same period in
2002.  Included in net income for 2003 is $10 million of other expense, net
comprised of a $5 million charge for the early extinguishment of debt related
to the partial redemption of the 8-1/8% senior notes of the Company's
subsidiary, Iron Mountain Canada Corporation, and a $5 million foreign
currency related net loss.  The loss is due primarily to the weakening of the
Canadian Dollar against the U.S. Dollar in the third quarter.  Gains related
to the strengthening of the pound Sterling against the U.S. Dollar were offset
by our hedging activities related to that currency.
    For the nine months ended September 30, 2003, the Company reported total
consolidated revenues of $1,093 million, an increase of 12% with storage
revenues growing at 13% and service revenues growing at 10% compared to the
prior year.  For the nine-month period, storage and service revenue internal
growth rates were 9% and 4%, respectively, yielding a total internal revenue
growth rate of 7%.
    OIBDA was $312 million, or 28.6% of revenues, for the nine months ended
September 30, 2003 compared to $266 million, or 27.2% of revenues, for the
nine months ended September 30, 2002.
    Operating income for the first nine months of 2003 was $218 million, or
20% of revenues, compared to $186 million, or 19% of revenues, for the same
period in 2002.  Net income from continuing operations before extraordinary
items was $56 million, or $0.65 per diluted share, for the first nine months
of 2003, compared to $48 million, or $0.56 per diluted share, for the same
period in 2002.
    Included in income from continuing operations before extraordinary items
for the first nine months of 2003 is $2 million of other expense, net
comprised of a $19 million foreign currency gain, due primarily to the
strengthening of the Canadian Dollar and the pound Sterling against the U.S.
Dollar, which was more than offset by $21 million of charges for the early
extinguishment of debt related to the Company's 2003 refinancing activities.
Included in income from continuing operations before extraordinary items for
the first nine months of 2002 is $2 million of other income, net comprised
primarily of a $4 million foreign currency gain partially offset by $1 million
of charges for the early extinguishment of debt related to the Company's 2002
refinancing activities.
    Net Income for the first nine months of 2003 was $56 million, or $0.65 per
diluted share, compared to $42 million, or $0.49 per diluted share, for the
same period in 2002.  Included in net income for 2002 is a $6 million after
tax charge representing the cumulative effect of a change in accounting
principle recorded in the first quarter of 2002 related to the impairment of
goodwill associated with the Company's investment in South America.
    Following is a reconciliation of operating income before depreciation and
amortization (OIBDA) to operating income and net income (in millions):


                               Quarter Ended             Nine Months Ended
                               September 30,               September 30,
                              2002         2003          2002         2003

    OIBDA (Operating Income
     Before Depreciation
     and Amortization) (1)   $94.9       $110.4       $266.0       $312.0
     Less: Depreciation and
      Amortization            28.9         33.2         80.5         93.9

    Operating Income (1)     $66.0        $77.2       $185.5       $218.1

     Less: Interest Expense,
      net                     36.0         38.8        101.7        110.7
      Other (Income) Expense,
       net                     2.7         10.3        (2.3)          2.4
      Provision for Income
       Taxes                  11.2         12.0         35.5         44.6
      Minority Interest        0.4          1.3          2.4          4.2
      Cumulative Effect of
       Change in Accounting
       Principle                --           --          6.4           --

    Net Income (1)           $15.7        $14.8        $41.8        $56.2

    Major Components of
     Other (Income)
     Expense, net:
     Foreign Exchange Effects $2.6         $4.8       $(3.7)      $(18.8)
     Debt Extinguishment
      Charges                  $--         $5.5         $1.2       $ 21.2

    (1) Includes $0.1 million and $1.9 million of losses on Disposal / Write-
down of Property, Plant and Equipment, net for the quarters ended September
30, 2002 and 2003, respectively and a $1.9 million gain and a $1.9 million
loss on Disposal / Write-down of Property, Plant and Equipment, net for the
nine months ended September 30, 2002 and 2003, respectively.

                        Financial Performance Outlook

    The following statements are based on current expectations and do not
include the potential impact of any future acquisitions.  These statements are
forward-looking, and actual results may differ materially.  Please refer to
the cautionary language included in this press release when considering this
information.  The Company undertakes no obligation to update this information.
The Company is reaffirming its financial guidance for the full year ending
December 31, 2003, which was most recently issued on July 31, 2003, and
includes the estimated impact of the Hays IMS acquisition (dollars in
millions):

                                                         Full Year Ending
                                                        December 31, 2003
                                                        Low           High
    Revenues                                          $1,480         $1,510
    Operating Income                                     273            293
    Depreciation & Amortization                          133            127

    Capital Expenditures                                 190            215
    Internal Growth                                       6%             8%

    As previously announced, the Company will be providing financial guidance
for 2004 at its upcoming Investor Day.  The 6th annual event will be held on
Thursday, November 20, 2003 in New York City and broadcast on the Company's
website at www.ironmountain.com.
    Iron Mountain's conference call to discuss the third quarter 2003
financial results will be held today at 11:00 a.m. eastern time.  In order to
further enhance the overall quality of its investor communications, the
Company will simulcast the conference call on its website at
www.ironmountain.com.  A slide presentation providing summary financial and
statistical information that will be discussed on the conference call will
also be posted to the website and available for real-time viewing.  The slide
presentation and replays of the conference call will be available on the
website for future reference.

    About Iron Mountain
    Iron Mountain Incorporated is the world's trusted partner for outsourced
records and information management services.  Founded in 1951, the Company has
grown to service more than 150,000 customer accounts throughout the United
States, Canada, Europe and Latin America.  Iron Mountain offers records
management services for both physical and digital media, disaster recovery
support services, and consulting -- services that help businesses save money
and manage risks associated with legal and regulatory compliance, protection
of vital information, and business continuity challenges.  For more
information, visit www.ironmountain.com.

                          Certain Important Factors

    This press release contains certain forward-looking statements within the
meaning of the Private Securities Litigation Reform Act of 1995, and is
subject to the safe-harbor created by such Act.  Forward-looking statements
include our full year 2003 financial performance outlook and statements
regarding our goals, beliefs, strategies, objectives, plans or current
expectations.  These statements involve known and unknown risks, uncertainties
and other factors that may cause the actual results to be materially different
from those contemplated in the forward-looking statements.  Such factors
include, but are not limited to: (i) changes in customer preferences and
demand for the Company's services; (ii) changes in the price for the Company's
services relative to the cost of providing such services; (iii) the cost and
availability of financing for contemplated growth; (iv) the Company's ability
or inability to complete acquisitions on satisfactory terms and to integrate
acquired companies efficiently; (v) in the various digital businesses in which
the Company is engaged, capital and technical requirements will be beyond the
Company's means, markets for the Company's services will be less robust than
anticipated, or competition will be more intense than anticipated; (vi) the
possibility that business partners upon which the Company depends for
technical assistance or management and acquisition expertise outside the
United States will not perform as anticipated; (vii) changes in the political
and economic environments in the countries in which the Company's
international subsidiaries operate; and (viii) other trends in competitive or
economic conditions affecting Iron Mountain's financial condition or results
of operations not presently contemplated.  Iron Mountain undertakes no
obligation to release publicly the result of any revision to these forward-
looking statements that may be made to reflect events or circumstances after
the date hereof or to reflect the occurrence of unanticipated events.

    Contact:   Stephen P. Golden
               Director of Investor Relations
               (617) 535-4799

    NOTE: Condensed Consolidated Financial Statements of Iron Mountain
Incorporated follow.


                          Iron Mountain Incorporated
               Condensed Consolidated Statements of Operations
                 (Amounts in Thousands except Per Share Data)
                                 (Unaudited)

                            Three Months Ended          Nine Months Ended
                               September 30,              September 30,
                            2002         2003          2002         2003
    Revenues:
     Storage              $191,377     $222,973     $561,797     $634,773
     Service and Storage
      Material Sales       141,736      158,785      416,234      458,066

      Total Revenues       333,113      381,758      978,031    1,092,839

    Operating Expenses:
     Cost of Sales
      (Excluding
      Depreciation)        153,858      171,355      461,711      493,538
     Selling, General
      and Administrative    83,986       98,087      251,492      285,377
     Depreciation and
      Amortization          28,950       33,197       80,459       93,911
     Merger-Related Expenses   190           --          770           --
     Loss (Gain) on
      Disposal / Writedown
      of Property, Plant and
      Equipment, Net           139        1,870      (1,921)        1,886

      Total Operating
       Expenses            267,123      304,509      792,511      874,712

    Operating Income        65,990       77,249      185,520      218,127

    Interest Expense, Net   36,017       38,790      101,685      110,752
    Other Expense (income),
     Net                     2,648       10,343      (2,308)        2,361

      Income from
       Continuing
       Operations Before
       Provision for Income
       Taxes and Minority
       Interest             27,325       28,116       86,143      105,014

    Provision for Income
     Taxes                  11,241       12,012       35,497       44,635
    Minority Interest in
     Earnings of
     Subsidiaries, Net         387        1,310        2,442        4,168

      Income from Continuing
       Operations Before
       Cumulative Effect of
       Change in Accounting
       Principle            15,697       14,794       48,204       56,211

    Cumulative Effect of
     Change in Accounting
     Principle (Net of
     Minority Interest) (1)     --           --      (6,396)           --

      Net Income           $15,697      $14,794      $41,808      $56,211

    Income From Continuing
     Operations Before
     Cumulative Effect of
     Change in Accounting
     Principle Per Share
     - Basic                $ 0.19       $ 0.17        $0.57       $ 0.66

    Income From Continuing
     Operations Before
     Cumulative Effect of
     Change in Accounting
     Principle Per Share
     - Diluted              $ 0.18       $ 0.17        $0.56       $ 0.65

    Net Income Per
     Share - Basic          $ 0.19       $ 0.17       $ 0.49       $ 0.66
    Net Income Per
     Share - Diluted        $ 0.18       $ 0.17       $ 0.49       $ 0.65

    Weighted Average
     Common Shares
     Outstanding - Basic    84,769       85,303       84,558       85,211
    Weighted Average
     Common Shares
     Outstanding - Diluted  85,997       86,726       86,026       86,690

    Operating Income before
     Depreciation and
     Amortization          $94,940     $110,446     $265,979     $312,038

    (1) Represents the non-cash charge related to the impairment of goodwill
associated with the Company's investment in South America due primarily to the
deterioration of the economy and the devaluation of the currency in Argentina.


                          Iron Mountain Incorporated
                    Condensed Consolidated Balance Sheets
                            (Amounts in Thousands)
                                 (Unaudited)

                                                  December 31, September 30,
                                                      2002           2003

    ASSETS

    Current Assets:
     Cash and Cash Equivalents                       $56,292        $23,544
      Accounts Receivable
      (less allowances of $20,274
      and $22,657, respectively)                     225,416        276,391
     Other Current Assets                             85,332         96,183
      Total Current Assets                           367,040        396,118

    Property, Plant and Equipment:
     Property, Plant and Equipment at Cost         1,577,588      1,897,790
     Less: Accumulated Depreciation                (338,400)      (424,314)
      Property, Plant and Equipment, net           1,239,188      1,473,476

    Other Assets:
     Goodwill, net                                 1,544,974      1,726,402
     Other Non-current Assets, net                    79,453        143,545
      Total Other Assets                           1,624,427      1,869,947

      Total Assets                                $3,230,655     $3,739,541

    LIABILITIES AND SHAREHOLDERS' EQUITY

    Current Liabilities:
     Current Portion of Long-term Debt               $69,732        $60,812
     Other Current Liabilities                       358,230        412,314
      Total Current Liabilities                      427,962        473,126

    Long-term Debt, Net of Current Portion         1,662,365      2,002,160
    Other Long-term Liabilities                      133,335        169,719

    Minority Interests                                62,132         72,186

    Shareholders' Equity                             944,861      1,022,350

     Total Liabilities and Shareholders' Equity   $3,230,655     $3,739,541

SOURCE  Iron Mountain Incorporated
    -0-                             10/29/2003
    /CONTACT:  Stephen P. Golden, Director of Investor Relations of Iron
Mountain, +1-617-535-4799/
    /LOGO: http://www.newscom.com/cgi-bin/prnh/20030505/IRMLOGO
                  AP Archive:  http://photoarchive.ap.org
                  PRN Photo Desk, 888-776-6555 or 212-782-2840/
    /Web site:  http://www.ironmountain.com/
    (IRM)

CO:  Iron Mountain Incorporated
ST:  Massachusetts
IN:  PUB FIN
SU:  ERN CCA MAV