<PAGE>   1

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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                             ---------------------

                                   FORM 10-Q

<Table>
<S>         <C>
(MARK ONE)
   [X]
</Table>

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                  FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2001

                                       OR

<Table>
<S>         <C>
   [  ]
</Table>

               TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

             FOR THE TRANSITION PERIOD FROM           TO

                         COMMISSION FILE NUMBER 1-7320

                              ANR PIPELINE COMPANY
             (Exact Name of Registrant as Specified in its Charter)

<Table>
<S>                                                <C>
                  DELAWARE                                          38-1281775
        (State or Other Jurisdiction                             (I.R.S. Employer
     of Incorporation or Organization)                         Identification No.)

              EL PASO BUILDING
           1001 LOUISIANA STREET                                      77002
               HOUSTON, TEXAS                                       (Zip Code)
  (Address of Principal Executive Offices)
</Table>

       Registrant's Telephone Number, Including Area Code: (713) 420-2600

                             ---------------------

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.  Yes [X]  No [ ]

     Indicate the number of shares outstanding of each of the issuer's classes
of common stock, as of the latest practicable date.

     Common stock, par value $100 per share. Shares outstanding on August 6,
2001: 1,000.

     ANR PIPELINE COMPANY MEETS THE CONDITIONS OF GENERAL INSTRUCTION H(1)(a)
AND (b) OF FORM 10-Q AND IS THEREFORE FILING THIS REPORT WITH A REDUCED
DISCLOSURE FORMAT AS PERMITTED BY SUCH INSTRUCTION.
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<PAGE>   2

                        PART I -- FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS.

                              ANR PIPELINE COMPANY

                  CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                                 (IN MILLIONS)
                                  (UNAUDITED)

<Table>
<Caption>
                                                          QUARTER ENDED       SIX MONTHS ENDED
                                                             JUNE 30,             JUNE 30,
                                                          --------------      ----------------
                                                          2001      2000      2001       2000
                                                          ----      ----      -----      -----
<S>                                                       <C>       <C>       <C>        <C>
Operating revenues......................................  $149      $140      $342       $316
                                                          ----      ----      ----       ----
Operating expenses
  Operation and maintenance.............................    92        85       180        169
  Merger-related costs..................................   107        --       174         --
  Depreciation, depletion, and amortization.............     8         9        18         19
  Taxes, other than income taxes........................     7         6        14          9
                                                          ----      ----      ----       ----
                                                           214       100       386        197
                                                          ----      ----      ----       ----
Operating income (loss).................................   (65)       40       (44)       119
                                                          ----      ----      ----       ----
Other income
  Earnings from unconsolidated affiliates...............     4         2         9          5
  Other, net............................................     4         4         4          8
                                                          ----      ----      ----       ----
                                                             8         6        13         13
                                                          ----      ----      ----       ----
Income (loss) before interest, income taxes, and other
  charges...............................................   (57)       46       (31)       132
                                                          ----      ----      ----       ----
Non-affiliated interest and debt expense................    10        12        21         24
Affiliated interest income, net.........................    (1)       (3)       (2)        (5)
Income taxes............................................   (24)       14       (18)        42
                                                          ----      ----      ----       ----
                                                           (15)       23         1         61
                                                          ----      ----      ----       ----
Income (loss) before extraordinary items................   (42)       23       (32)        71
Extraordinary items, net of income taxes................     2        --        (1)        --
                                                          ----      ----      ----       ----
Net income (loss).......................................  $(40)     $ 23      $(33)      $ 71
                                                          ====      ====      ====       ====
</Table>

                            See accompanying notes.

                                        1
<PAGE>   3

                              ANR PIPELINE COMPANY

                     CONDENSED CONSOLIDATED BALANCE SHEETS
                      (IN MILLIONS, EXCEPT SHARE AMOUNTS)
                                  (UNAUDITED)

<Table>
<Caption>
                                                              JUNE 30,   DECEMBER 31,
                                                                2001         2000
                                                              --------   ------------
<S>                                                           <C>        <C>
                                       ASSETS


Current assets
  Cash and cash equivalents.................................   $   --       $    1
  Accounts and notes receivable, net
     Customer...............................................      107          118
     Affiliates.............................................      305          161
     Other..................................................        4           --
  Materials and supplies....................................       21           29
  Deferred income taxes.....................................       11           16
  Other.....................................................       33           --
                                                               ------       ------
          Total current assets..............................      481          325
                                                               ------       ------
Property, plant, and equipment, at cost.....................    3,463        3,468
Less accumulated depreciation, depletion, and
  amortization..............................................    2,186        2,196
                                                               ------       ------
          Total property, plant, and equipment, net.........    1,277        1,272
                                                               ------       ------
Other assets
  Investments in unconsolidated affiliates..................       78          113
  Other.....................................................        4            5
                                                               ------       ------
                                                                   82          118
                                                               ------       ------
          Total assets......................................   $1,840       $1,715
                                                               ======       ======

                        LIABILITIES AND STOCKHOLDER'S EQUITY


Current liabilities
  Accounts and notes payable
     Trade..................................................   $   40       $   14
     Affiliates.............................................       81            4
     Other..................................................       60           59
  Taxes payable.............................................       18           44
  Other.....................................................       26           32
                                                               ------       ------
          Total current liabilities.........................      225          153
                                                               ------       ------
Long-term debt..............................................      498          498
                                                               ------       ------
Other
  Deferred income taxes.....................................      212          230
  Other.....................................................      168           34
                                                               ------       ------
                                                                  380          264
                                                               ------       ------
Commitments and contingencies
Stockholder's equity
  Common stock, par value $100 per share; authorized and
     issued 1,000 shares....................................       --           --
  Additional paid-in capital................................      466          466
  Retained earnings.........................................      271          334
                                                               ------       ------
          Total stockholder's equity........................      737          800
                                                               ------       ------
          Total liabilities and stockholder's equity........   $1,840       $1,715
                                                               ======       ======
</Table>

                            See accompanying notes.

                                        2
<PAGE>   4

                              ANR PIPELINE COMPANY

                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN MILLIONS)
                                  (UNAUDITED)

<Table>
<Caption>
                                                              SIX MONTHS ENDED
                                                                  JUNE 30,
                                                              ----------------
                                                              2001       2000
                                                              -----      -----
<S>                                                           <C>        <C>
Cash flows from operating activities
  Net income (loss).........................................  $ (33)     $ 71
  Adjustments to reconcile net income (loss) to net cash
     from operating activities
     Depreciation, depletion, and amortization..............     18        19
     Deferred income tax expense (benefit)..................    (12)       13
     Undistributed earnings of unconsolidated affiliates....     (3)       --
     Non-cash portion of merger-related costs...............    142        --
  Working capital changes, net of non-cash transactions.....     42       (70)
  Other.....................................................    (20)       22
                                                              -----      ----
       Net cash provided by operating activities............    134        55
                                                              -----      ----
Cash flows from investing activities
  Purchase of property, plant, and equipment................     (8)      (44)
  Proceeds from the sale of investments.....................     41        --
  Change in notes receivable from related parties...........   (160)       46
                                                              -----      ----
       Net cash provided by (used in) investing
        activities..........................................   (127)        2
                                                              -----      ----
Cash flows from financing activities
  Dividends paid............................................    (30)      (59)
  Other.....................................................     22        (1)
                                                              -----      ----
       Net cash used in financing activities................     (8)      (60)
                                                              -----      ----
Decrease in cash and cash equivalents.......................     (1)       (3)
Cash and cash equivalents
  Beginning of period.......................................      1         3
                                                              -----      ----
  End of period.............................................  $  --      $ --
                                                              =====      ====
</Table>

                            See accompanying notes.

                                        3
<PAGE>   5

                              ANR PIPELINE COMPANY

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (UNAUDITED)

1. BASIS OF PRESENTATION

     Our 2000 Annual Report on Form 10-K includes a summary of our significant
accounting policies and other disclosures. You should read it in conjunction
with this Quarterly Report on Form 10-Q. The financial statements as of June 30,
2001, and for the quarters and six months ended June 30, 2001 and 2000, are
unaudited. The balance sheet as of December 31, 2000, is derived from the
audited balance sheet included in our Annual Report on Form 10-K. These
financial statements have been prepared pursuant to the rules and regulations of
the U.S. Securities and Exchange Commission and do not include all disclosures
required by accounting principles generally accepted in the United States. In
our opinion, we have made all adjustments, all of which are of a normal,
recurring nature (except for merger-related costs and changes in accounting
estimates discussed in Notes 2 and 3), to fairly present our interim period
results. Information for interim periods may not necessarily indicate the
results of operations for the entire year due to the seasonal nature of our
businesses. The prior period information also includes reclassifications which
were made to conform to the current period presentation. These reclassifications
have no effect on our reported net income or stockholder's equity.

2. MERGER-RELATED COSTS

     During the quarter and six months ended June 30, 2001, we incurred
merger-related costs of $107 million and $174 million associated with El Paso
Corporation's merger with The Coastal Corporation. These charges consist of
employee severance, retention, and transition costs, including pension and
postretirement benefits settled and curtailed under existing benefit plans for
severed employees and early retirees that occurred as a result of El Paso's
merger-related workforce reduction and consolidation. Following the merger,
approximately 900 full time positions were eliminated through a combination of
early retirements and terminations. These costs also include charges associated
with relocating our headquarters to Houston, Texas, lease related costs,
write-offs of leasehold improvements, and other charges related to combining
operations.

3. CHANGES IN ACCOUNTING ESTIMATES

     Included in our operation and maintenance costs for the quarter and six
months ended June 30, 2001, are approximately $19 million in costs related to
changes in our estimates of environmental remediation liabilities and the
usability of spare parts inventory in our operations. Both charges arose as a
result of an ongoing evaluation of our operating standards and plans following
our parent's merger with El Paso and our combined operating strategy. These
changes in estimates reduced net income before extraordinary items and net
income by approximately $12 million.

4. EXTRAORDINARY ITEMS

     As a result of El Paso's merger with Coastal, Deepwater Holdings Inc., our
unconsolidated affiliate, was required, under a Federal Trade Commission (FTC)
order, to dispose of its interests in the Stingray pipeline and U-T Offshore
pipeline systems, and we were required to dispose of our 16 percent interest in
the Iroquois pipeline system. For the quarter and six months ended June 30,
2001, net proceeds from these sales were approximately $40 million and $65
million resulting in an extraordinary gain (loss) of approximately $2 million
and $(1) million, net of income taxes.

5. COMMITMENTS AND CONTINGENCIES

  Legal Proceedings

     In 1997, we and a number of our affiliates were named defendants in actions
brought by Jack Grynberg on behalf of the U.S. Government under the False Claims
Act. Generally, these complaints allege an industry-wide conspiracy to under
report the heating value as well as the volumes of the natural gas produced

                                        4
<PAGE>   6

from federal and Native American lands, which deprived the U.S. Government of
royalties. These matters have been consolidated for pretrial purposes (In re:
Natural Gas Royalties Qui Tam Litigation, U.S. District Court for the District
of Wyoming). In May 2001, the court denied the defendants' motions to dismiss.

     We and a number of our affiliates were named defendants in Quinque
Operating Company, et al v. Gas Pipelines and Their Predecessors, et al, filed
in 1999 in the District Court of Stevens County, Kansas. This class action
complaint alleges that the defendants mismeasured natural gas volumes and
heating content of natural gas on non-federal and non-Native American lands. The
Quinque complaint was transferred to the same court handling the Grynberg
complaint and has now been sent back to Kansas State Court for further
proceedings.

     We are also a named defendant in numerous lawsuits and a named party in
numerous governmental proceedings arising in the ordinary course of our
business.

     While the outcome of the matters discussed above cannot be predicted with
certainty, we do not expect the ultimate resolution of these matters will have a
material adverse effect on our financial position, operating results, or cash
flows.

  Environmental

     We are subject to extensive federal, state, and local laws and regulations
governing environmental quality and pollution control. These laws and
regulations require us to remove or remedy the effect on the environment of the
disposal or release of specified substances at current and former operating
sites. As of June 30, 2001, we had a reserve of approximately $25 million for
expected remediation costs. In addition, we expect to make capital expenditures
for environmental matters of approximately $37 million in the aggregate for the
years 2001 through 2006. These expenditures primarily relate to compliance with
clean air regulations.

     We have been designated and have received notice that we could be
designated, or have been asked for information to determine whether we could be
designated, as a Potentially Responsible Party (PRP) with respect to four active
sites under the Comprehensive Environmental Response, Compensation and Liability
Act (CERCLA) or state equivalents. We have sought to resolve our liability as a
PRP at these CERCLA sites, as appropriate, through indemnification by third
parties and/or settlements which provide for payment of our allocable share of
remediation costs. As of June 30, 2001, we have estimated our share of the
remediation costs at these sites to be approximately $1 million and have
provided reserves that we believe are adequate for such costs. Since the cleanup
costs are estimates and are subject to revision as more information becomes
available about the extent of remediation required, and because in some cases we
have asserted a defense to any liability, our estimates could change. Moreover,
liability under the federal CERCLA statute is joint and several, meaning that we
could be required to pay in excess of our pro rata share of remediation costs.
Our understanding of the financial strength of other PRPs has been considered,
where appropriate, in the determination of our estimated liabilities. We
presently believe that the costs associated with these CERCLA sites will not
have a material adverse effect on our financial position, operating results, or
cash flows.

     In Michigan, where we have extensive operations, the Michigan Environmental
Response Act requires individuals, including corporations, who have caused
contamination to remediate the contamination to regulatory standards. Owners or
operators of contaminated property who did not cause the contamination are not
required to remediate the contamination, but must exercise due care in their use
of the property so that the contamination is not exacerbated and the property
does not pose a threat to human health. We estimate that our costs to comply
with the Michigan regulations will be approximately $15 million, which will be
expended over a period of several years and for which appropriate reserves have
been made.

     It is possible that new information or future developments could require us
to reassess our potential exposure related to environmental matters. We may
incur significant costs and liabilities in order to comply with existing
environmental laws and regulations. It is also possible that other developments,
such as increasingly strict environmental laws and regulations and claims for
damages to property, employees, other persons and the environment resulting from
our current or past operations, could result in substantial costs and
liabilities in the future. As this information becomes available, or other
relevant developments occur, we will

                                        5
<PAGE>   7

adjust our accrual amounts accordingly. While there are still uncertainties
relating to the ultimate costs we may incur, based upon our evaluation and
experience to date, we believe the recorded reserves are adequate.

6. TRANSACTIONS WITH RELATED PARTIES

     We participate in a cash management program which matches short-term cash
excesses and requirements of participating affiliates, thus minimizing total
borrowing from outside sources. We borrowed $22 million at June 30, 2001, at a
market rate of interest which was 4.2%. At December 31, 2000, we had borrowed $4
million. In addition, we had notes receivable from other related parties of $289
million at June 30, 2001, and $122 million at December 31, 2000.

     At June 30, 2001, we had accounts receivable from other related parties of
$16 million and $39 million at December 31, 2000. In addition, we had accounts
payable to other related parties of $59 million at June 30, 2001. These balances
were incurred in the normal course of business.

7. NEW ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED

  Business Combinations

     In July 2001, the Financial Accounting Standards Board (FASB) issued
Statement of Financial Accounting Standards (SFAS) No. 141, Business
Combinations. This statement requires that all transactions that fit the
definition of a business combination be accounted for using the purchase method
and prohibits the use of the pooling of interests method for all business
combinations initiated after June 30, 2001. This statement also establishes
specific criteria for the recognition of intangible assets separately from
goodwill and requires unallocated negative goodwill to be written off
immediately as an extraordinary item. This standard will have an impact on any
business combination we undertake in the future. We are currently evaluating the
effects of this pronouncement on our historical financial statements.

  Goodwill and Other Intangible Assets

     In July 2001, the FASB issued SFAS No. 142, Goodwill and Other Intangible
Assets. This statement requires that goodwill no longer be amortized but
intermittently tested for impairment at least on an annual basis. Other
intangible assets are to be amortized over their useful life and reviewed for
impairment in accordance with the provisions of SFAS No. 121, Accounting for the
Impairment of Long-Lived Assets and Long-Lived Assets to be Disposed of. An
intangible asset with an indefinite useful life can no longer be amortized until
its useful life becomes determinable. This statement has various effective
dates, the most significant of which is January 1, 2002. We are currently
evaluating the effects of this pronouncement.

  Accounting for Asset Retirement Obligations

     In July 2001, the FASB approved for issuance SFAS No. 143, Accounting for
Asset Retirement Obligations. This statement requires companies to record a
liability relating to the retirement and removal of assets used in their
business. The liability is discounted to the present value, and the related
asset value is increased by the amount of the resulting liability. Over the life
of the asset, the liability will be accreted to its future value and eventually
extinguished when the asset is taken out of service. The provisions of this
statement are effective for fiscal years beginning after June 15, 2002. We are
currently evaluating the effects of this pronouncement.

                                        6
<PAGE>   8

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

     The information contained in Item 2 updates, and you should read it in
conjunction with, information disclosed in Part II, Items 7, 7A, and 8, in our
Annual Report on Form 10-K for the year ended December 31, 2000, in addition to
the financial statements and notes presented in Item 1, Financial Statements, of
this Quarterly Report on Form 10-Q.

                             RESULTS OF OPERATIONS

     Below are the operating results and an analysis of these results for the
quarters and six months ended June 30:

<Table>
<Caption>
                                                    QUARTER ENDED     SIX MONTHS ENDED
                                                    --------------    ----------------
                                                    2001     2000      2001      2000
                                                    -----    -----    ------    ------
                                                              (IN MILLIONS)
<S>                                                 <C>      <C>      <C>       <C>
Operating revenues................................  $ 149    $ 140    $ 342     $ 316
Operating expenses................................   (214)    (100)    (386)     (197)
Other income, net.................................      8        6       13        13
                                                    -----    -----    -----     -----
  Earnings (loss) before interest, income taxes,
     and extraordinary items......................  $ (57)   $  46    $ (31)    $ 132
                                                    =====    =====    =====     =====
</Table>

     Included in our results of operations for the quarter and six months ended
June 30, 2001, are merger-related costs associated with El Paso's merger with
Coastal in January 2001 and other charges totaling $126 million and $193
million. Merger-related costs include employee severance, retention, and
transition costs; charges to relocate our headquarters to Houston, Texas; lease
related charges; and other merger costs. Other charges consist of changes in
estimates of our environmental remediation liabilities and the usability of
spare parts inventories in our operations.

  Second Quarter 2001 Compared to Second Quarter 2000

     Operating revenues for the quarter ended June 30, 2001, were $9 million
higher than the same period in 2000. The increase was due to higher realized
prices on sales of natural gas from the Dakota gasification facility, sales of
excess natural gas in the second quarter of 2001, and higher storage revenues
due to new contracts during 2001. Partially offsetting the increase was the
favorable resolution of regulatory issues in 2000.

     Operating expenses for the quarter ended June 30, 2001, were $114 million
higher than the same period in 2000. The increase was due to higher prices on
natural gas purchased at the Dakota gasification facility, and merger-related
costs and other charges discussed above. Partially offsetting this increase were
lower operating expenses due to cost efficiencies following El Paso's merger
with Coastal.

  Six Months Ended 2001 Compared to Six Months Ended 2000

     Operating revenues for the six months ended June 30, 2001, were $26 million
higher than the same period in 2000. The increase was due to higher realized
prices on sales of natural gas from the Dakota gasification facility, sales of
excess natural gas, and higher storage revenues due to new contracts during
2001. Partially offsetting the increase was the favorable resolution of
regulatory issues in the first six months of 2000.

     Operating expenses for the six months ended June 30, 2001, were $189
million higher than the same period in 2000. The increase was due to higher
prices on natural gas purchased at the Dakota gasification facility and
merger-related costs and other charges discussed above. Partially offsetting the
increase were lower operating expenses due to cost efficiencies following El
Paso's merger with Coastal.

                                        7
<PAGE>   9

INCOME TAXES

     The income tax benefits for the quarter and six months ended June 30, 2001,
were $24 million and $18 million, resulting in effective tax rates of 36 percent
for both periods. The income tax expenses for the quarter and six months ended
June 30, 2000, were $14 million and $42 million, resulting in effective tax
rates of 38 percent and 37 percent. Our effective tax rates were different than
the statutory rate of 35 percent in all periods primarily due to state income
taxes.

OTHER

     We are expanding our pipeline system through the Typhoon project. Typhoon
consists of a 35-mile, 20-inch gas pipeline from the Typhoon platform in Green
Canyon Block 237 in the Gulf of Mexico to our facilities at an existing platform
in Eugene Island Block 371. The cost of this project is estimated to be $52
million and the in-service date is expected to occur in the third quarter 2001.
Our total year to date expenditures have been $15 million.

                 NEW ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED

     See Item 1, Financial Statements, Note 7, which is incorporated herein by
reference.

                                        8
<PAGE>   10

CAUTIONARY STATEMENT FOR PURPOSES OF THE "SAFE HARBOR" PROVISIONS OF THE PRIVATE
                    SECURITIES LITIGATION REFORM ACT OF 1995

     This report contains or incorporates by reference forward-looking
statements within the meaning of the Private Securities Litigation Reform Act of
1995. Where any forward-looking statement includes a statement of the
assumptions or bases underlying the forward-looking statement, we caution that,
while we believe these assumptions or bases to be reasonable and to be made in
good faith, assumed facts or bases almost always vary from the actual results,
and the differences between assumed facts or bases and actual results can be
material, depending upon the circumstances. Where, in any forward-looking
statement, we or our management express an expectation or belief as to future
results, that expectation or belief is expressed in good faith and is believed
to have a reasonable basis. We cannot assure you, however, that the statement of
expectation or belief will result or be achieved or accomplished. The words
"believe," "expect," "estimate," "anticipate" and similar expressions will
generally identify forward-looking statements.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

     This information updates, and you should read it in conjunction with,
information disclosed in Part II, Item 7A in our Annual Report on Form 10-K for
the year ended December 31, 2000, in addition to the information presented in
Items 1 and 2 of this Quarterly Report on Form 10-Q.

     There are no material changes in our quantitative and qualitative
disclosures about market risks from those reported in our Annual Report on Form
10-K for the year ended December 31, 2000.

                                        9
<PAGE>   11

                          PART II -- OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

     See Part I, Item 1, Financial Statements, Note 5, which is incorporated
herein by reference.

ITEM 2. CHANGES IN SECURITIES AND USE OF PROCEEDS

     None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

     None.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     None.

ITEM 5. OTHER INFORMATION

     None.

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K.

     a. Exhibits

        None.

     Undertaking

          We hereby undertake, pursuant to Regulation S-K, Item 601(b),
     paragraph 4(iii), to furnish to the U.S. Securities and Exchange
     Commission, upon request, all constituent instruments defining the rights
     of holders of our long-term debt not filed herewith for the reason that the
     total amount of securities authorized under any of such instruments does
     not exceed 10 percent of our total consolidated assets.

     b. Reports on Form 8-K

          We filed a current report on Form 8-K, dated May 29, 2001, announcing
     the change in our certifying accountants.

                                        10
<PAGE>   12

                                   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.

                                                    ANR PIPELINE COMPANY

Date: August 10, 2001                               /s/ GREG G. GRUBER
                                              ----------------------------------
                                                        Greg G. Gruber
                                                    Senior Vice President
                                                 and Chief Financial Officer

Date: August 10, 2001                              /s/ JEFFREY I. BEASON
                                              ----------------------------------
                                                      Jeffrey I. Beason
                                                  Senior Vice President and
                                                          Controller
                                                (Principal Accounting Officer)

                                        11