UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM 10-Q
(Mark One)

   (X)            QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                  SECURITIES EXCHANGE ACT OF 1934
                  For the quarterly period ended March 31, 2003
                                                 -----------------
                                       OR

   ( )            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 1-8864

                                 USG CORPORATION
 ------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

               Delaware                                    36-3329400
- ------------------------------------------------------------------------------
      (State or other jurisdiction of                   (I.R.S. Employer
       incorporation or organization)                  Identification No.)

 125 South Franklin Street, Chicago, Illinois              60606-4678
- ------------------------------------------------------------------------------
 (Address of principal executive offices)                  (Zip code)


Registrant's telephone number, including area code        (312) 606-4000
                                                   --------------------------

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 by check mark whether the registrant is an accelerated filer (as
defined in Exchange Act Rule 12b-2).  Yes  X   No
                                         -----   -----

Indicate by check mark whether the registrant  has filed all documents and
reports  required to be filed by Section 12, 13, or 15(d) of the Securities
Exchange Act of 1934 subsequent to the  distribution of securities under a plan
confirmed by a court. Yes  X   No
                         -----   -----

As of March 31, 2003, 43,036,758 shares of USG common stock were outstanding.




                                TABLE OF CONTENTS



                                                                                Page
                                                                              --------
                                                                        
PART I  FINANCIAL INFORMATION

Item 1. Financial Statements:

             Consolidated Statements of Earnings:
                  Three Months Ended March 31, 2003 and 2002                      3

             Consolidated Balance Sheets:
                  As of March 31, 2003 and December 31, 2002                      4

             Consolidated Statements of Cash Flows:
                  Three Months Ended March 31, 2003 and 2002                      5

             Notes to Consolidated Financial Statements                           6

Item 2. Management's Discussion and Analysis of Results
           of Operations and Financial Condition                                 40

Item 4. Controls and Procedures                                                  52

Report of Independent Public Accountants                                         53


PART II  OTHER INFORMATION

Item 1. Legal Proceedings                                                        55

Item 6. Exhibits and Reports on Form 8-K                                         55

SIGNATURES                                                                       56






                                      -2-


PART I   FINANCIAL INFORMATION
ITEM 1.  FINANCIAL STATEMENTS


                                 USG CORPORATION
                       CONSOLIDATED STATEMENTS OF EARNINGS
                   (DOLLARS IN MILLIONS EXCEPT PER SHARE DATA)
                                   (UNAUDITED)




                                                                THREE MONTHS
                                                               ENDED MARCH 31,
                                                         ----------------------------
                                                             2003            2002
                                                         ------------    ------------
                                                                   
Net sales                                                $        862    $        829
Cost of products sold                                             745             697
Selling and administrative expenses                                80              82
Chapter 11 reorganization expenses                                  2               2
                                                         ------------    ------------
Operating profit                                                   35              48
Interest expense                                                    1               1
Interest income                                                    (1)             (1)
Other expense, net                                                  -               1
                                                         ------------    ------------
Earnings before income taxes and cumulative
effect of accounting change                                        35              47

Income taxes                                                       13              21
                                                         ------------    ------------
Earnings before cumulative effect of accounting change             22              26

Cumulative effect of accounting change, net of tax                (16)            (96)
                                                         ------------    ------------
Net earnings (loss)                                                 6             (70)
                                                         ============    ============

EARNINGS (LOSS) PER COMMON SHARE:
    Basic and diluted before cumulative effect
    of accounting change                                         0.50            0.60

    Cumulative effect of accounting change                      (0.37)          (2.22)
                                                         ------------    ------------
    Basic and diluted                                            0.13           (1.62)
                                                         ============    ============


Dividends paid per common share                                     -               -

Average common shares                                      43,137,883      43,354,025
Average diluted common shares                              43,137,883      43,354,025



See accompanying Notes to Consolidated Financial Statements.



                                      -3-


                                 USG CORPORATION
                           CONSOLIDATED BALANCE SHEETS
                              (DOLLARS IN MILLIONS)
                                   (UNAUDITED)




                                                     AS OF           AS OF
                                                   MARCH 31,      DECEMBER 31,
                                                     2003             2002
                                                   ---------      ------------
                                                           
ASSETS
Current Assets:
Cash and cash equivalents                           $   592         $   649
Short-term marketable securities                         47              50
Receivables (net of reserves - $17 and $17)             355             284
Inventories                                             286             270
Income taxes receivable                                  14              14
Deferred income taxes                                    49              49
Other current assets                                     73              77
                                                    -------         -------
Total current assets                                  1,416           1,393

Long-term marketable securities                         129             131
Property, plant and equipment (net of accumulated
    depreciation and depletion - $733 and $701)       1,789           1,788
Deferred income taxes                                   197             199
Other assets                                            106             106
                                                    -------         -------
Total Assets                                          3,637           3,617
                                                    =======         =======

LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
Accounts payable                                        199             170
Accrued expenses                                        192             243
Income taxes payable                                     23              25
                                                    -------         -------
Total current liabilities                               414             438

Long-term debt                                            2               2
Other liabilities                                       398             370
Liabilities subject to compromise                     2,271           2,272

Stockholders' Equity:
Preferred stock                                           -               -
Common stock                                              5               5
Treasury stock                                         (258)           (257)
Capital received in excess of par value                 413             412
Accumulated other comprehensive loss                    (21)            (32)
Retained earnings                                       413             407
                                                    -------         -------
Total stockholders' equity                              552             535
                                                    -------         -------
Total Liabilities and Stockholders' Equity            3,637           3,617
                                                    =======         =======



See accompanying Notes to Consolidated Financial Statements.


                                      -4-




                                 USG CORPORATION
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                              (DOLLARS IN MILLIONS)
                                   (UNAUDITED)




                                                             THREE MONTHS
                                                            ENDED MARCH 31,
                                                            --------------
                                                             2003     2002
                                                            -----    -----
                                                              
OPERATING ACTIVITIES:
Net earnings (loss)                                         $   6    $ (70)
Adjustments to reconcile net earnings (loss) to net cash:
   Cumulative effect of accounting change                      16       96
   Depreciation, depletion and amortization                    25       26
   Deferred income taxes                                       12       27
(Increase) decrease in working capital:
    Receivables                                               (71)     (48)
    Income taxes receivable                                     -       (6)
    Inventories                                               (16)      (9)
    Payables                                                   27       24
    Accrued expenses                                          (53)      12
(Increase) decrease in other assets                            (3)       1
Increase (decrease) in other liabilities                       (3)       5
Decrease in asbestos receivables                               15        3
Decrease in liabilities subject to compromise                  (1)     (16)
Other, net                                                      1        -
                                                            -----    -----
Net cash (used for) provided by operating activities          (45)      45
                                                            -----    -----
INVESTING ACTIVITIES:
Capital expenditures                                          (17)     (15)
Purchases of marketable securities                            (32)       -
Sales or maturities of marketable securities                   37        -
                                                            -----    -----
Net cash used for investing activities                        (12)     (15)
                                                            -----    -----
FINANCING ACTIVITIES:
Net cash provided by financing activities                       -        -
                                                            -----    -----

Net (decrease) increase in cash and cash equivalents          (57)      30

Cash and cash equivalents at beginning of period              649      493
                                                            -----    -----
Cash and cash equivalents at end of period                    592      523
                                                            =====    =====
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Interest paid                                                   -        1
Income taxes refunded, net                                      4       (1)




See accompanying Notes to Consolidated Financial Statements.



                                      -5-


                                 USG CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)

(1)      PREPARATION OF FINANCIAL STATEMENTS

         The accompanying unaudited consolidated financial statements of USG
         Corporation and its subsidiaries ("the Corporation") have been prepared
         in accordance with applicable United States Securities and Exchange
         Commission guidelines pertaining to interim financial information. The
         preparation of financial statements in conformity with accounting
         principles generally accepted in the United States of America requires
         management to make estimates and assumptions that affect the reported
         amounts of assets, liabilities, revenues and expenses. Actual results
         could differ from those estimates. In the opinion of management, the
         financial statements reflect all adjustments, which are of a normal
         recurring nature, necessary for a fair presentation of the
         Corporation's financial results for the interim periods. These
         financial statements and notes are to be read in conjunction with the
         financial statements and notes included in the Corporation's 2002
         Annual Report on Form 10-K which was filed on February 27, 2003.


(2)      VOLUNTARY REORGANIZATION UNDER CHAPTER 11

         On June 25, 2001 (the "Petition Date"), the parent company (the "Parent
         Company") of the Corporation and the 10 United States subsidiaries
         listed below (collectively, the "Debtors") filed voluntary petitions
         for reorganization (the "Filing") under chapter 11 of the United States
         Bankruptcy Code (the "Bankruptcy Code") in the United States Bankruptcy
         Court for the District of Delaware (the "Bankruptcy Court"). The
         chapter 11 cases of the Debtors (collectively, the "Chapter 11 Cases")
         are being jointly administered as In re: USG Corporation et al. (Case
         No. 01-2094). The Chapter 11 Cases do not include any of the
         Corporation's non-U.S. subsidiaries. The following subsidiaries filed
         chapter 11 petitions: United States Gypsum Company; USG Interiors,
         Inc.; USG Interiors International, Inc.; L&W Supply Corporation; Beadex
         Manufacturing, LLC; B-R Pipeline Company; La Mirada Products Co., Inc.;
         Stocking Specialists, Inc.; USG Industries, Inc.; and USG Pipeline
         Company.

         This action was taken to resolve asbestos claims in a fair and
         equitable manner, to protect the long-term value of the Debtors'
         businesses, and to maintain the Debtors' leadership positions in their
         markets.

         CONSEQUENCES OF THE FILING

         The Debtors are operating their businesses without interruption as
         debtors-in-possession subject to the provisions of the Bankruptcy Code.
         All vendors are being paid for all goods furnished and services
         provided after the Filing. However, as a consequence of the Filing,
         pending



                                      -6-


         litigation against the Debtors as of the Petition Date is stayed, and
         no party may take any action to pursue or collect pre-petition claims
         except pursuant to an order of the Bankruptcy Court.

         Three creditors' committees, one representing asbestos personal injury
         claimants, another representing asbestos property damage claimants, and
         a third representing general unsecured creditors, were appointed as
         official committees in the Chapter 11 Cases and, in accordance with the
         provisions of the Bankruptcy Code, will have the right to be heard on
         all matters that come before the Bankruptcy Court. The Bankruptcy Court
         also appointed the Honorable Dean M. Trafelet as the legal
         representative for future asbestos claimants in the Debtors' bankruptcy
         proceeding. Mr. Trafelet was formerly a judge of the Circuit Court of
         Cook County, Illinois. The Debtors expect that the appointed
         committees, together with Mr. Trafelet, will play important roles in
         the Chapter 11 Cases and the negotiation of the terms of any plan of
         reorganization.

         Debtors intend to address all pending and future asbestos personal
         injury claims as well as all other pre-petition claims in a plan or
         plans of reorganization confirmed by the Bankruptcy Court. Debtors also
         intend that the plan will include the creation of one or more
         independently administered trusts under Section 524(g) of the
         Bankruptcy Code, which will be funded by Debtors to allow payment of
         present and future asbestos personal injury claims and demands. Debtors
         expect that the plan of reorganization will also address Debtors'
         liability for asbestos property damage claims, whether by including
         those liabilities in a Section 524(g) trust or by other means.

         It is anticipated that, as a result of creation and funding of the
         Section 524(g) trust(s), the Bankruptcy Court will issue a permanent
         injunction barring the assertion of present and future asbestos claims
         against Debtors, their successors, and their affiliates, and channeling
         those claims to the trust(s) for payment in whole or in part. Section
         524(g) contains specific requirements for issuance of such a permanent
         injunction, including the requirement that the trust must own, or have
         the right to own upon the occurrence of contingencies specified in the
         plan of reorganization, a majority of the voting shares of the debtor
         or its parent. Section 524(g) also requires that the plan be approved
         by 75% of the voting asbestos claimants whose claims are addressed by
         the trust. Similar plans of reorganization containing Section 524(g)
         trusts have been confirmed in the chapter 11 cases of other companies
         with asbestos liabilities, but there is no guarantee that the
         Bankruptcy Court in Debtors' Chapter 11 Cases will approve creation of
         a Section 524(g) trust or issue a permanent injunction channeling to
         the trust all asbestos claims against Debtors, and/or their successors
         and affiliates.

         Pursuant to the Bankruptcy Code, the Debtors had the exclusive right to
         propose a plan of reorganization for 120 days following the Petition
         Date, unless extended. The Bankruptcy Court has granted requests by the
         Debtors to extend the period of exclusivity, which currently runs
         through



                                      -7-


         September 1, 2003. The Debtors intend to seek one or more additional
         extensions depending upon developments in the Chapter 11 Cases. If the
         Debtors fail to file a plan of reorganization during such extension
         period, or if such plan is not accepted by the requisite numbers of
         creditors and equity holders entitled to vote on the plan, other
         parties in interest in the Chapter 11 Cases may be permitted to propose
         their own plan(s) of reorganization for the Debtors.

         While it is the Debtors' intention to seek a full recovery for their
         creditors, it is not possible to predict how the plan of reorganization
         will treat asbestos and other pre-petition claims and what impact any
         plan may have on the value of the shares of the Corporation's common
         stock and other outstanding securities. Under the Bankruptcy Code, a
         plan of reorganization, including a plan creating a Section 524(g)
         trust, may be confirmed without the consent of non-asbestos creditors
         and equity security holders if certain requirements of the Code are
         met. There is no assurance that there will be sufficient assets to
         satisfy the Debtors' pre-petition liabilities in whole or in part, and
         the pre-petition creditors of some Debtors may be treated differently
         from the pre-petition creditors of other Debtors. The payment rights
         and other entitlements of pre-petition creditors and USG shareholders
         may be substantially altered by any plan or plans of reorganization
         confirmed in the Chapter 11 Cases. Pre-petition creditors may receive
         under the plan of reorganization less than 100% of the face value of
         their claims, and the interests of the Corporation's equity security
         holders are likely to be substantially diluted or cancelled in whole or
         in part.

         It is also not possible to predict at this time how the plan of
         reorganization will treat intercompany indebtedness, licenses,
         transfers of goods and services and other intercompany arrangements,
         transactions, and relationships that were entered into before the
         Petition Date. These arrangements, transactions, and relationships may
         be challenged by various parties in the Chapter 11 Cases, and the
         outcome of those challenges, if any, may have an impact on the
         treatment of various claims under any plan of reorganization.

         Whether the Corporation's equity has significant value and Debtors'
         non-asbestos creditors recover the full value of their claims depend
         upon the outcome of the analysis of the amount of Debtors' assets and
         liabilities, especially asbestos liabilities, that must be funded under
         the plan. Counsel for the Official Committee of Asbestos Personal
         Injury Claimants and counsel for the legal representative for future
         asbestos personal injury claimants have advised the court that is
         presiding over the Chapter 11 Cases that they believe Debtors' asbestos
         liabilities exceed the value of Debtors' assets and that Debtors are
         insolvent. The Debtors have advised the court that they believe they
         are solvent if their asbestos liabilities are fairly and appropriately
         valued. Toward that end, the Debtors filed a motion with the court
         requesting the court to begin proceedings to estimate the value of
         Debtors' asbestos personal injury liabilities.





                                      -8-


         In response to the Debtors' motion requesting an estimation of asbestos
         personal injury liabilities, the court issued an order and memorandum
         opinion on February 19, 2003, setting forth a procedure for estimating
         Debtors' liability for asbestos personal injury claims alleging cancer.
         (See Note 12. Litigation, for additional information on this
         procedure.) At this stage in the proceedings, Debtors do not know when
         estimation of Debtors' liability for these cancer claims will occur,
         what the outcome of that proceeding will be, what impact that
         proceeding will have on estimating Debtors' liability for asbestos
         personal injury claims alleging other diseases, and whether the
         estimation proceeding will lead to a negotiated resolution of Debtors'
         asbestos personal injury liabilities. Debtors also cannot predict at
         this time the estimated cost of resolving asbestos property damage
         claims (see Note 12, Litigation, for additional information.) If the
         amount of the Debtors' asbestos liabilities cannot be resolved through
         negotiation, as has been the case to date, the outcome of the
         estimation proceedings regarding Debtors' liability for cancer claims,
         as provided in the Court's order, likely will be a significant
         component of determining Debtors' asbestos personal injury liability,
         Debtors' solvency, and the recovery of Debtors' pre-petition creditors
         and equity security holders under any plan or plans of reorganization.

         As a result of this uncertainty, it is not possible at this time to
         predict the timing or outcome of the Chapter 11 Cases, the terms and
         provisions of any plan or plans of reorganization, or the effect of the
         chapter 11 reorganization process on the claims of pre-petition
         creditors of the Debtors or the interests of the Corporation's equity
         security holders. There can be no assurance as to the value of any
         distributions that might be made under any plan or plans of
         reorganization with respect to such pre-petition claims, equity
         interests, or other outstanding securities. Recent developments in the
         Corporation's bankruptcy proceeding are discussed in Note 12.
         Litigation.

         In connection with the Filing, the Corporation implemented a Bankruptcy
         Court approved key employee retention plan that commenced on July 1,
         2001, and continues until the date the Corporation emerges from
         bankruptcy, or June 30, 2004, whichever occurs first. Under the plan,
         participants receive semiannual payments that began in January 2002.
         Expenses associated with this plan amounted to $5.6 million in the
         first quarter of 2003 and 2002.

         CHAPTER 11 FINANCING
         On July 31, 2001, a $350 million debtor-in-possession financing
         facility (the "DIP Facility") was approved by the Bankruptcy Court to
         supplement liquidity and fund operations during the reorganization
         process. In January 2003, the Corporation reduced the size of the DIP
         Facility to $100 million. This action was taken at the election of the
         Corporation due to the levels of cash and marketable securities on hand
         and to reduce costs associated with the DIP Facility. The resulting DIP
         Facility is used largely to support the issuance of standby letters of
         credit needed for business operations. The DIP Facility is provided by
         a syndicate of




                                      -9-



         lenders led by JPMorgan Chase Bank (formerly The Chase Manhattan Bank)
         as agent and matures on June 25, 2004. Borrowing availability under the
         DIP Facility is based primarily on accounts receivable and inventory
         levels and, to a lesser extent, property, plant and equipment. Given
         these levels, as of March 31, 2003, the Corporation had the capacity to
         borrow up to $100 million. There were no outstanding borrowings under
         the DIP Facility as of March 31, 2003. However, $16 million of standby
         letters of credit were outstanding, leaving $84 million of unused
         borrowing capacity available as of March 31, 2003.

         PRE-PETITION LIABILITIES
         Subsequent to the Filing, the Debtors received approval from the
         Bankruptcy Court to pay or otherwise honor certain of their
         pre-petition obligations, including employee wages, salaries, benefits
         and other employee obligations, and from limited available funds,
         pre-petition claims of certain critical vendors, real estate taxes,
         environmental obligations, certain customer programs and warranty
         claims, and certain other pre-petition claims.

         Pursuant to the Bankruptcy Code, schedules were filed by the Debtors
         with the Bankruptcy Court on October 23, 2001, and certain of the
         schedules were amended on May 31, 2002 and December 13, 2002, setting
         forth the assets and liabilities of the Debtors as of the date of the
         Filing. The Bankruptcy Court established a bar date of January 15,
         2003, by which proofs of claim were required to be filed against the
         Debtors for all claims other than asbestos related personal injury
         claims as defined in the Court's order.

         Approximately 5,000 proofs of claim for general unsecured creditors,
         totaling approximately $8.7 billion were filed by the bar date. Since
         the bar date, the Debtors have received 109 late-filed proofs of claim
         totaling approximately $191 million. The Debtors have begun the process
         of analyzing the proofs of claim filed by the bar date. A preliminary
         analysis of these proofs of claim suggests that many are duplicates of
         other proofs of claim or of liabilities previously scheduled by the
         Debtors. In addition, many claims were filed against multiple debtors
         or against an incorrect Debtor. Early in the review process, the
         Debtors have already identified approximately $5.7 billion in duplicate
         claims and approximately $500 million in contingent claims and continue
         to analyze filed claims on an on-going basis.

         The Debtors expect to address claims for general unsecured creditors
         through liquidation, estimation or disallowance of the claims. In
         connection with this process, Debtors will make adjustments to their
         schedules and financials statements as appropriate. Any such
         adjustments could be material to the Company's consolidated financial
         position and results of operations in any given period. At this time,
         it is not possible to estimate the Debtors' liability for these claims.
         However, it is likely that the Debtors' liability for these claims will
         be different from the amounts presently recorded by the Debtors. Proofs
         of claim




                                      -10-


         alleging asbestos property damage claims are discussed in Note 12.
         Litigation, under Developments in the Reorganization Process.

         FINANCIAL STATEMENT PRESENTATION
         The accompanying consolidated financial statements have been prepared
         in accordance with AICPA Statement of Position 90-7 ("SOP 90-7"),
         "Financial Reporting by Entities in Reorganization Under the Bankruptcy
         Code," and on a going-concern basis, which contemplates continuity of
         operations, realization of assets and liquidation of liabilities in the
         ordinary course of business. However, as a result of the Filing, such
         realization of assets and liquidation of liabilities, without
         substantial adjustments and/or changes of ownership, are subject to
         uncertainty. Given this uncertainty, there is substantial doubt about
         the Corporation's ability to continue as a going concern. Such doubt
         includes, but is not limited to, a possible change in control of the
         Corporation, as well as a potential change in the composition of the
         Corporation's business portfolio. The financial statements do not
         include any adjustments that might result from the outcome of this
         uncertainty. While operating as debtors-in-possession under the
         protection of chapter 11 of the Bankruptcy Code and subject to
         Bankruptcy Court approval or otherwise as permitted in the ordinary
         course of business, the Debtors, or any of them, may sell or otherwise
         dispose of assets and liquidate or settle liabilities for amounts other
         than those reflected in the consolidated financial statements. Further,
         a plan of reorganization could materially change the amounts and
         classifications in the historical consolidated financial statements.

         The appropriateness of using the going-concern basis for the
         Corporation's financial statements is dependent upon, among other
         things, (i) the Corporation's ability to comply with the terms of the
         DIP Facility and the cash management order entered by the Bankruptcy
         Court in connection with the Chapter 11 Cases (ii) the ability of the
         Corporation to maintain adequate cash on hand (iii) the ability of the
         Corporation to generate cash from operations (iv) confirmation of a
         plan or plans of reorganization under the Bankruptcy Code and (v) the
         Corporation's ability to achieve profitability following such
         confirmation. The Corporation believes that cash and marketable
         securities on hand and future cash available from operations will
         provide sufficient liquidity to allow its businesses to operate in the
         normal course without interruption for the duration of the chapter 11
         proceedings. This includes its ability to meet post-petition
         obligations of the Debtors and to meet obligations of the non-Debtor
         subsidiaries.




                                      -11-


         LIABILITIES SUBJECT TO COMPROMISE: As reflected in the consolidated
         financial statements, liabilities subject to compromise refers to
         Debtors' liabilities incurred prior to the commencement of the Chapter
         11 Cases. The amounts of the various liabilities that are subject to
         compromise are set forth in the table below. These amounts represent
         the Debtors' estimate of known or potential pre-petition claims to be
         resolved in connection with the Chapter 11 Cases. Such claims remain
         subject to future adjustments. Adjustments may result from (i)
         negotiations, (ii) actions of the Bankruptcy Court, (iii) further
         developments with respect to disputed claims, (iv) rejection of
         executory contracts and unexpired leases, (v) the determination as to
         the value of any collateral securing claims, (vi) proofs of claim, or
         (vii) other events.

         The amount shown below for the asbestos reserve reflects the
         Corporation's pre-petition estimate of liability associated with
         asbestos claims to be filed in the tort system through 2003, and this
         liability, including liability for post-2003 claims, is the subject of
         significant legal proceedings and negotiation in the Chapter 11 Cases.
         See Note 12. Litigation for additional information on asbestos and
         related bankruptcy litigation.

         As of the date of this report, virtually all of the Corporation's
         pre-petition debt is in default due to the Filing and included in
         liabilities subject to compromise. This includes debt outstanding of
         $469 million under the pre-petition bank credit facilities and $536
         million of other outstanding debt. Payment terms for liabilities
         subject to compromise will be established as part of a plan of
         reorganization under the Chapter 11 Cases.

         Liabilities subject to compromise in the consolidated and DIP balance
         sheets consist of the following items (dollars in millions):




                                                                                    As of                     As of
                                                                                March 31,              December 31,
                                                                                     2003                      2002
                                                                               ------------------------------------
                                                                                                
         Accounts payable                                                          $  157                   $   157
         Accrued expenses                                                              55                        56
         Debt                                                                       1,005                     1,005
         Asbestos reserve                                                           1,061                     1,061
         Other long-term liabilities                                                   36                        36
         ----------------------------------------------------------------------------------------------------------
         Subtotal                                                                   2,314                     2,315
         Elimination of intercompany accounts payable                                (43)                      (43)
         ----------------------------------------------------------------------------------------------------------
         Total liabilities subject to compromise                                    2,271                     2,272
         ==========================================================================================================





                                      -12-


         INTERCOMPANY TRANSACTIONS: In the normal course of business, the
         operating subsidiaries and the Parent Company engage in intercompany
         transactions. To document the relations created by these transactions,
         the Parent Company and the operating subsidiaries, from the formation
         of USG Corporation in 1985, have been parties to intercompany loan
         agreements that evidence their obligations as borrowers or rights as
         lenders arising out of intercompany cash transfers and various
         allocated intercompany charges (the "Intercompany Corporate
         Transactions").

         The Corporation operates a consolidated cash management system under
         which the cash receipts of the domestic operating subsidiaries are
         ultimately concentrated in Parent Company accounts. Cash disbursements
         for those operating subsidiaries originate from those Parent Company
         concentration accounts. Allocated intercompany charges from the Parent
         Company to the operating subsidiaries primarily include expenses
         related to rent, property taxes, information technology, and research
         and development, while allocated intercompany charges between certain
         operating subsidiaries primarily include expenses for shared marketing,
         sales, customer service, engineering and accounting services. Detailed
         accounting records are maintained of all cash flows and intercompany
         charges through the system in either direction. Net balances,
         receivables or payables of such cash transactions, are reviewed on a
         regular basis with interest earned or accrued on the balances. During
         the first six months of 2001, the Corporation took steps to secure the
         obligations from each of the principal domestic operating subsidiaries
         under the intercompany loan agreements when it became clear that the
         asbestos liability claims of U.S. Gypsum were becoming an increasingly
         greater burden on the Corporation's cash resources.

         As of March 31, 2003, U.S. Gypsum and USG Interiors had net
         pre-petition payable balances to the Parent Company for Intercompany
         Corporate Transactions of $294 million and $109 million, respectively.
         L&W Supply had a net pre-petition receivable balance from the Parent
         Company of $33 million. On a post-petition basis, U.S. Gypsum and L&W
         Supply had net receivable balances from the Parent Company for
         Intercompany Corporate Transactions of $158 million and $154 million,
         respectively. USG Interiors had a net post-petition payable balance to
         the Parent Company of $5 million.

         In addition to the above transactions, the operating subsidiaries
         engage in ordinary course purchase and sale of products with other
         operating subsidiaries (the "Intercompany Trade Transactions").
         Detailed accounting records also are maintained of all such
         transactions, and settlements are made on a monthly basis. Certain
         Intercompany Trade Transactions between U.S. and non-U.S. operating
         subsidiaries are settled via wire transfer payments utilizing several
         payment systems.



                                      -13-



         CHAPTER 11 REORGANIZATION EXPENSES: Chapter 11 reorganization expenses
         in the consolidated and DIP statements of earnings consist of the
         following (dollars in millions):



                                                                                   Three Months ended March 31,
                                                                                ----------------------------------
                                                                                     2003                     2002
                                                                                ----------------------------------
                                                                                                  
         Legal and financial advisory fees                                           $  4                    $   4
         Bankruptcy-related interest income                                            (2)                      (2)
         ---------------------------------------------------------------------------------------------------------
         Total chapter 11 reorganization expenses                                       2                        2
         =========================================================================================================



         INTEREST EXPENSE: For the first quarter of 2003, contractual interest
         expense not accrued or recorded on pre-petition debt totaled $18
         million. From the Petition Date through March 31, 2003, contractual
         interest expense not accrued or recorded on pre-petition debt totaled
         $133 million.

         DIP FINANCIAL STATEMENTS: Under the Bankruptcy Code, the Corporation is
         required to file periodically with the Bankruptcy Court various
         documents including financial statements of the Debtors (the
         "Debtor-In-Possession" or "DIP" financial statements). The Corporation
         cautions that these financial statements are prepared according to
         requirements under the Bankruptcy Code. While these financial
         statements accurately provide information required under the Bankruptcy
         Code, they are nonetheless unconsolidated, unaudited and prepared in a
         format different from that used in the Corporation's consolidated
         financial statements filed under the securities laws. Accordingly, the
         Corporation believes the substance and format do not allow meaningful
         comparison with the Corporation's regular publicly disclosed
         consolidated financial statements. The Debtors consist of the Parent
         Company and the following wholly owned subsidiaries: United States
         Gypsum Company; USG Interiors, Inc.; USG Interiors International, Inc.;
         L&W Supply Corporation; Beadex Manufacturing, LLC; B-R Pipeline
         Company; La Mirada Products Co., Inc.; Stocking Specialists, Inc.; USG
         Industries, Inc.; and USG Pipeline Company.

         On March 1, 2002, USG Funding, a non-Debtor subsidiary of USG
         Corporation, declared a dividend in the amount of $50 million
         (subsequently reduced to $30 million in the second quarter) payable to
         the Parent Company, which was paid in effect by eliminating the
         intercompany payable from USG Corporation. This payment is included in
         other (income) expense, net in the DIP statement of earnings for the
         three months ended March 31, 2002. The condensed financial statements
         of the Debtors are presented as follows:



                                      -14-




                                 USG CORPORATION
                   DEBTOR-IN-POSSESSION STATEMENT OF EARNINGS
                              (DOLLARS IN MILLIONS)
                                   (UNAUDITED)





                                                          THREE MONTHS
                                                         ENDED MARCH 31,
                                                         ---------------
                                                          2003     2002
                                                         -----    -----
                                                           
Net sales                                                $ 781    $ 750
Cost of products sold                                      684      640
Selling and administrative expenses                         69       71
Chapter 11 reorganization expenses                           2        2
Interest expense                                             1        2
Interest income                                              -        -
Other (income) expense, net                                 (2)     (50)
                                                         -----    -----
Earnings before income taxes and cumulative effect of
accounting change                                           27       85

Income taxes                                                12       18
                                                         -----    -----
Earnings before cumulative effect of accounting change      15       67

Cumulative effect of accounting change                     (13)     (41)
                                                         -----    -----
Net earnings                                                 2       26
                                                         =====    =====
















                                      -15-



                                 USG CORPORATION
                       DEBTOR-IN-POSSESSION BALANCE SHEETS
                              (DOLLARS IN MILLIONS)
                                   (UNAUDITED)





                                                     AS OF           AS OF
                                                   MARCH 31,      DECEMBER 31,
                                                     2003            2002
                                                   ---------      -----------
                                                           
ASSETS
Current Assets:
Cash and cash equivalents                           $   439         $   478
Short-term marketable securities                         47              50
Receivables (net of reserves - $13 and $13)             293             235
Inventories                                             242             227
Income taxes receivable                                  14              14
Deferred income taxes                                    49              49
Other current assets                                     57              67
                                                    -------         -------
Total current assets                                  1,141           1,120

Long-term marketable securities                         129             131
Property, plant and equipment (net of accumulated
  depreciation and depletion - $580 and $557)         1,563           1,572
Deferred income taxes                                   215             218
Other assets                                            384             378
                                                    -------         -------
Total Assets                                          3,432           3,419
                                                    =======         =======
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
Accounts payable                                        171             142
Accrued expenses                                        165             207
Income taxes payable                                     24              20
                                                    -------         -------
Total current liabilities                               360             369

Other liabilities                                       382             362
Liabilities subject to compromise                     2,271           2,272

Stockholders' Equity:
Preferred stock                                           -               -
Common stock                                              5               5
Treasury stock                                         (258)           (257)
Capital received in excess of par value                 100              99
Accumulated other comprehensive income                    5               4
Retained earnings                                       567             565
                                                    -------         -------
Total stockholders' equity                              419             416
                                                    -------         -------
Total Liabilities and Stockholders' Equity            3,432           3,419
                                                    =======         =======





                                      -16-



                                 USG CORPORATION
                  DEBTOR-IN-POSSESSION STATEMENTS OF CASH FLOWS
                              (DOLLARS IN MILLIONS)
                                   (UNAUDITED)





                                                        THREE MONTHS
                                                       ENDED MARCH 31,
                                                       --------------
                                                       2003     2002
                                                       -----    -----
                                                         
OPERATING ACTIVITIES:
Net earnings                                           $   2    $  26
Adjustments to reconcile net earnings to net cash:
   Cumulative effect of accounting change                 13       41
   Depreciation, depletion and amortization               22       21
   Deferred income taxes                                  11       28
(Increase) decrease in working capital:
    Receivables                                          (58)     (37)
    Income taxes receivable                                -       (4)
    Inventories                                          (15)      (9)
    Payables                                              33       26
    Accrued expenses                                     (45)      11
Decrease in pre-petition intercompany receivable           -        -
Increase in post-petition intercompany receivable         (7)     (51)
Decrease in other assets                                   2        6
(Decrease) increase in other liabilities                  (5)       4
Decrease in asbestos receivables                          15        3
Decrease in liabilities subject to compromise             (1)     (16)
Other, net                                                (1)      (1)
                                                       -----    -----
Net cash (used for) provided by operating activities     (34)      48
                                                       -----    -----
INVESTING ACTIVITIES:
Capital expenditures                                     (10)     (13)
Purchases of marketable securities                       (32)       -
Sale or maturities of marketable securities               37        -
Net proceeds from asset dispositions                       -        -
                                                       -----    -----
Net cash used for investing activities                    (5)     (13)
                                                       -----    -----
FINANCING ACTIVITIES:
Net cash provided by financing activities                  -        -
                                                       -----    -----
Net (decrease) increase in cash and cash equivalents     (39)      35
Cash and cash equivalents at beginning of period         478      346
                                                       -----    -----
Cash and cash equivalents at end of period               439      381
                                                       =====    =====
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Interest paid                                              1        1
Income taxes refunded, net                                 -       (5)




                                      -17-




(3)      EXIT ACTIVITIES

         2002 DOWNSIZING PLAN: In the fourth quarter of 2002, the Corporation
         recorded a nontaxable charge of $11 million related to the shutdown of
         the Aubange, Belgium, ceiling tile plant and other downsizing
         activities in Europe to address the continuing weakness of the
         commercial ceilings market in Europe. The charge was included in cost
         of products sold for USG International and reflected severance of $6
         million related to a workforce reduction of over 50 positions (salaried
         and hourly), equipment writedowns of $3 million and other reserves of
         $2 million. The other reserves primarily related to lease
         cancellations, inventories and receivables.

         As of March 31, 2003, 49 employees were terminated. The Aubange,
         Belgium, plant ceased operations in December 2002. The reserve for the
         2002 downsizing plan was included in accrued expenses on the
         consolidated balance sheets. Charges against the reserve included the
         $3 million write-off of equipment in 2002 and payments totaling $3
         million in the first quarter of 2003. All payments associated with the
         2002 downsizing plan are being funded with cash from operations.

         2001 RESTRUCTURING PLAN: In the fourth quarter of 2001, the Corporation
         recorded a charge of $12 million pretax ($10 million after-tax) related
         to a restructuring plan that included the shutdown of a gypsum
         wallboard plant in Fremont, Calif., a drywall steel plant in Prestice,
         Czech Republic, a ceiling tile plant in San Juan Ixhuatepec, Mexico, a
         ceiling tile manufacturing line in Greenville, Miss., and other
         restructuring activities. Included in the $12 million pretax charge was
         $8 million for severance related to a workforce reduction of more than
         350 positions (primarily hourly positions), $2 million for the
         write-off of property, plant and equipment, and $2 million for line
         shutdown and removal and contract cancellations. The 2001 restructuring
         was intended to allow the Corporation to optimize its manufacturing
         operations.

         As of March 31, 2003, 348 employees were terminated, and 26 open
         positions were eliminated, and the ceiling tile manufacturing line at
         Greenville, Miss., and the plants in San Juan Ixhuatepec, Mexico, and
         Prestice, Czech Republic, were shut down. The Fremont, Calif., plant
         ceased production in the second quarter of 2002. The reserve for the
         2001 restructuring plan was included in accrued expenses on the
         consolidated balance sheets. Charges against the reserve in 2001
         included the $2 million write-off of property, plant and equipment and
         payments totaling $2 million. An additional $3 million of payments were
         made and charged against the reserve in 2002. The remaining $5 million
         of payments were made and charged against the reserve in the first
         quarter of 2003. All payments associated with the 2001 restructuring
         plan were funded with cash from operations.

         The following table details the reserves and activity for the 2002
         downsizing and 2001 restructuring plan (dollars in millions):




                                      -18-




                                                                           Writedown of                Reserve
                                                        Provisions for     Assets to Net      Cash     Balance
                                                        Restructuring    Realizable Value   Payments   3/31/03
         -------------------------------------------------------------------------------------------------------
                                                                                           
         2002 Downsizing:
         Severance (salaried and hourly)                    $    6            $     -      $     (3)   $      3
         Equipment write-off                                     3                 (3)            -           -
         Other reserves                                          2                  -             -           2
         -------------------------------------------------------------------------------------------------------
         Subtotal                                               11                 (3)           (3)          5
         -------------------------------------------------------------------------------------------------------
         2001 Restructuring:
         Severance (primarily hourly)                            8                  -            (8)          -
         Property, plant and equipment write-off                 2                 (2)            -           -
         Line shutdown/removal and contract cancellations        2                  -            (2)          -
         -------------------------------------------------------------------------------------------------------
         Subtotal                                               12                 (2)          (10)          -
         -------------------------------------------------------------------------------------------------------
         Total                                                  23                 (5)          (13)          5
         =======================================================================================================



(4)      EARNINGS PER SHARE

         Basic earnings per share are based on the weighted average number of
         common shares outstanding. Diluted earnings per share are based on the
         weighted average number of common shares outstanding and the dilutive
         effect of the potential exercise of outstanding stock options. Diluted
         earnings per share exclude the potential exercise of outstanding stock
         options for any period in which such exercise would have an
         anti-dilutive effect. The reconciliation of basic earnings per share to
         diluted earnings per share is shown in the following table (dollars in
         millions except share data):



                                                                 Net
                                                               Earnings             Shares             Per Share
         Three Months Ended March 31,                          (Loss)               (000)               Amount
         --------------------------------------------------------------------------------------------------------
                                                                                             
         2003:
         Basic earnings                                     $       6               43,138              $   0.13
         Dilutive effect of stock options                                                -
         --------------------------------------------------------------------------------------------------------
         Diluted earnings                                           6               43,138                  0.13
         ========================================================================================================
         2002:
         Basic loss                                               (70)              43,354                 (1.62)
         Dilutive effect of stock options                                                -
         --------------------------------------------------------------------------------------------------------
         Diluted loss                                             (70)              43,354                 (1.62)
         ========================================================================================================





                                      -19-



(5)      MARKETABLE SECURITIES

         As of March 31, 2003, the Corporation's investments in marketable
         securities consisted of the following:




                                                                                                               Fair
                                                                                           Amortized          Market
                                                                                                Cost           Value
                                                                                           --------------------------
                                                                                                       
         Asset-backed securities                                                            $    72           $    72
         U.S. government and agency securities                                                   55                55
         Municipal securities                                                                    30                30
         Time deposits                                                                            6                 6
         Corporate securities                                                                    13                13
         ------------------------------------------------------------------------------------------------------------
         Total marketable securities                                                            176               176
         ============================================================================================================


         Contractual maturities of marketable securities as of March 31, 2003,
         were as follows (dollars in millions):




                                                                                                               Fair
                                                                                           Amortized          Market
                                                                                                Cost           Value
                                                                                           --------------------------
                                                                                                       
         Due in 1 year or less                                                              $    41           $    41
         Due in 1-5 years                                                                        39                39
         Due in 5-10 years                                                                        7                 7
         Due after 10 years                                                                      17                17
         ------------------------------------------------------------------------------------------------------------
         Asset-backed securities                                                                 72                72
         ------------------------------------------------------------------------------------------------------------
         Total marketable securities                                                            176               176
         ============================================================================================================


         The average duration of the portfolio is less than one year because a
         majority of the longer-term securities have paydown or put features and
         liquidity facilities.





                                      -20-



(6)      ADOPTION OF SFAS NO. 143

         On January 1, 2003, the Corporation adopted Statement of Financial
         Accounting Standards ("SFAS") No. 143, "Accounting for Asset Retirement
         Obligations." This standard requires the recording of the fair value of
         a liability for an asset retirement obligation in the period in which
         it is incurred. The Corporation's asset retirement obligations include
         reclamation requirements as regulated by government authorities related
         principally to assets such as the Corporation's mines, quarries,
         landfills, ponds and wells. The impact of adopting SFAS No. 143 was an
         increase in the Corporation's assets and liabilities of $14 million and
         $30 million, respectively. An after-tax charge of $16 million ($27
         million pretax) was reflected on the consolidated statement of earnings
         as a cumulative effect of a change in accounting principle as of
         January 1, 2003.


(7)      ADOPTION OF SFAS NO. 142

         On January 1, 2002,  the  Corporation  adopted  SFAS No.  142,
         "Goodwill  and Other  Intangible  Assets." Although SFAS No. 142
         eliminated the  amortization  of goodwill and certain other  intangible
         assets, it initiated an annual assessment of goodwill for impairment.

         The initial assessment was completed as of the adoption date. The
         assessment was performed for each reporting unit (as defined by SFAS
         No. 142) that had goodwill. For the Corporation, the reporting units
         with goodwill were the North American Gypsum and the Building Products
         Distribution operating segments.

         The Corporation determined that goodwill for its Building Products
         Distribution segment was not impaired, but will be reviewed at least
         annually for impairment. However, goodwill for its North American
         Gypsum segment was impaired. This impairment was attributable to U.S.
         Gypsum's asbestos liability and related filing for bankruptcy
         protection on June 25, 2001. As a result, the Corporation recorded a
         noncash, nontaxable impairment charge of $96 million. This charge
         included a $90 million write-off of goodwill (net of accumulated
         amortization of $8 million) and a $6 million write-off of deferred
         currency translation. In accordance with SFAS No. 142, the Corporation
         reflected this charge in its financial statements as a cumulative
         effect of a change in accounting principle as of January 1, 2002.





                                       -21-




(8)      DERIVATIVE INSTRUMENTS

         The Corporation uses derivative instruments to manage selected
         commodity price and foreign currency exposures. The Corporation does
         not use derivative instruments for trading purposes. Under SFAS No.
         133, "Accounting for Derivative Instruments and Hedging Activities," as
         amended, all derivative instruments must be recorded on the balance
         sheet at fair value. For derivatives designated as fair value hedges,
         the changes in the fair values of both the derivative instrument and
         the hedged item are recognized in earnings in the current period. For
         derivatives designated as cash flow hedges, the effective portion of
         changes in the fair value of the derivative is recorded to accumulated
         other comprehensive loss and is reclassified to earnings when the
         underlying transaction has an impact on earnings.

         COMMODITY DERIVATIVE INSTRUMENTS: The Corporation uses swap contracts
         from time to time to hedge anticipated purchases of natural gas,
         wastepaper and fuel to be used in its manufacturing and shipping
         operations. The current contracts, all of which mature by December 31,
         2004, are generally designated as cash flow hedges, with changes in
         fair value recorded to accumulated other comprehensive loss until the
         hedged transaction occurs, at which time it is reclassified to
         earnings.

         As of March 31, 2003, the fair value of these swap contracts, which
         remained in accumulated other comprehensive loss, was $15 million ($9
         million after-tax).

         FOREIGN EXCHANGE DERIVATIVE INSTRUMENTS: The Corporation has operations
         in a number of countries and uses forward contracts from time to time
         to hedge selected risk of changes in cash flows resulting from
         forecasted intercompany and third-party sales or purchases in foreign
         currencies. These contracts are generally designated as cash flow
         hedges, for which changes in fair value are recorded to accumulated
         other comprehensive loss until the underlying transaction has an impact
         on earnings. As of March 31, 2003, the Corporation had foreign currency
         contracts in place which mature on the anticipated date of the
         underlying transaction, and all contracts mature by December 31, 2003.
         The notional amounts of foreign currency contracts as of March 31,
         2003, was $1 million. The fair value of these contracts as of March 31,
         2003, was zero.

         COUNTERPARTY RISK: The Corporation is exposed to credit losses in the
         event of nonperformance by the counterparties on its financial
         instruments. All counterparties have investment grade credit standing;
         accordingly, the Corporation anticipates that these counterparties will
         be able to satisfy fully their obligations under the contracts. The
         Corporation does not generally obtain collateral or other security to
         support financial instruments subject to credit risk but monitors the
         credit standing of all counterparties.







                                       -22-



(9)      COMPREHENSIVE INCOME (LOSS)

         The components of comprehensive income (loss) are summarized in the
         following table (dollars in millions):


                                                                                    Three Months
                                                                                   ended March 31
                                                                                ---------------------
                                                                                   2003        2002
                                                                                ---------------------
                                                                                     
         Net earnings (loss)                                                     $   6      $  (70)
         --------------------------------------------------------------------------------------------
         Pretax gain (loss) on derivatives                                           -           13
         Income tax benefit (expense)                                                -          (5)
         --------------------------------------------------------------------------------------------
         After-tax gain (loss) on derivative                                         -            8
         --------------------------------------------------------------------------------------------
         Deferred currency translation                                              11            1
         --------------------------------------------------------------------------------------------
         Unrealized gain (loss) on marketable
           securities                                                                -            -
         --------------------------------------------------------------------------------------------
         Total comprehensive income (loss)                                          17         (61)
         ============================================================================================



         There was no tax impact on the foreign currency translation
         adjustments. The components of accumulated other comprehensive loss
         included on the consolidated balance sheet are summarized in the
         following table (dollars in millions):


                                                                               As of           As of
                                                                           March 31,    December 31,
                                                                                2003            2002
                                                                          ---------------------------
                                                                                  
         Gain on derivatives, net of tax                                   $      18     $       18
         Deferred currency translation                                          (28)           (39)
         Minimum pension liability, net of tax                                  (11)           (11)
         Unrealized gain (loss) on marketable securities                           -              -
         --------------------------------------------------------------------------------------------
         Total accumulated other comprehensive loss                             (21)           (32)
         ============================================================================================


         During the first quarter of 2003, $8 million of accumulated net
         after-tax gains ($13 million pretax) on derivatives were reclassified
         from accumulated other comprehensive loss to earnings. As of March 31,
         2003, the estimated net after-tax gain expected to be reclassified
         within the next 12 months from accumulated other comprehensive loss
         into earnings is $16 million.









                                      -23-




(10)     STOCK-BASED COMPENSATION

         The Corporation accounts for stock-based compensation under the
         provisions of Accounting Principles Board ("APB") Opinion No. 25,
         "Accounting for Stock Issued to Employees." APB No. 25 prescribes the
         use of the intrinsic value method, which measures compensation cost as
         the quoted market price of the stock at the date of grant less the
         amount, if any, that the employee is required to pay. If the
         Corporation had elected to recognize compensation cost for stock-based
         compensation grants consistent with the fair value method prescribed by
         SFAS No. 123, "Accounting for Stock-Based Compensation," as amended by
         SFAS No. 148, "Accounting for Stock-Based Compensation-Transition and
         Disclosure," net earnings (loss) and net earnings (loss) per common
         share would have changed to the following pro forma amounts:


                                                                                      Three Months
                                                                                     ended March 31,
                                                                                -------------------------
                                                                                    2003        2002
                                                                                -------------------------
                                                                                       
         NET EARNINGS (LOSS):
         Net Earnings(Loss): As reported                                         $      6     $    (70)
         Deduct: Fair value method of stock
             -based employee compensation
             expense, net of tax                                                        -           (1)
         ------------------------------------------------------------------------------------------------
         Pro forma net earnings(loss)                                                   6          (71)
         ================================================================================================
         BASIC AND DILUTED EARNINGS (LOSS) PER SHARE:
         As reported                                                                 0.13        (1.62)
         Pro forma                                                                   0.13        (1.64)
         ================================================================================================


         Subsequent to the Filing, no stock option grants have been issued. The
         deduction of $1 million shown above to first quarter 2002 net earnings
         reflects the vesting of options granted prior to the Filing.

         As of March 31, 2003, common shares totaling 2,695,325 were reserved
         for future issuance in conjunction with existing stock option grants.
         In addition, 2,189,670 common shares were reserved for future grants.
         Shares issued in option exercises may be from original issue or
         available treasury shares.




                                      -24-


(11)     OPERATING SEGMENTS

         The Corporation's operations are organized into three operating
         segments: North American Gypsum, which manufactures SHEETROCK brand
         gypsum wallboard and joint compounds, DUROCK brand cement board and
         other related building products in the United States, Canada and
         Mexico; Worldwide Ceilings, which manufactures ceiling tile in the
         United States and ceiling grid in the United States, Canada, Europe and
         the Asia-Pacific region; and Building Products Distribution, which
         distributes gypsum wallboard, drywall metal, ceiling products, joint
         compound and other building products throughout the United States.
         Operating segment results were as follows (dollars in millions):



                                                                    Net Sales                   Operating Profit
         ----------------------------------------------------------------------------------------------------------
         Three Months Ended March 31,                         2003            2002            2003             2002
         ----------------------------------------------------------------------------------------------------------
                                                                                              
         North American Gypsum                            $    542       $     525          $   38        $      58
         Worldwide Ceilings                                    147             148               8                5
         Building Products Distribution                        295             275               8                7
         Corporate                                               -               -            (18)             (20)
         Chapter 11 reorganization expenses                      -               -             (2)              (2)
         Eliminations                                        (122)           (119)               1                -
         ----------------------------------------------------------------------------------------------------------
         Total                                                 862             829              35               48
         ==========================================================================================================


(12)     LITIGATION

         ASBESTOS AND RELATED BANKRUPTCY LITIGATION

         One of the Corporation's subsidiaries, U.S. Gypsum, is among many
         defendants in lawsuits arising out of the manufacture and sale of
         asbestos-containing materials. On June 25, 2001 (the "Petition Date"),
         U.S. Gypsum, the Parent Company, and other domestic subsidiaries (the
         "Debtors") filed voluntary petitions for reorganization ("Filing")
         under chapter 11 of the U.S. Bankruptcy Code to manage the growing
         costs of resolving asbestos claims and to achieve a fair and final
         resolution of liability for both pending and future asbestos claims.
         The Debtors' chapter 11 cases ("Chapter 11 Cases") are being jointly
         administered as In re: USG Corporation et al. (Case No. 01-2094) in the
         United States Bankruptcy Court for the District of Delaware (the
         "Bankruptcy Court").

         U.S. Gypsum's asbestos liability derives from its sale of certain
         asbestos-containing products beginning in the late 1920s; in most
         cases, the products were discontinued or asbestos was removed from the
         formula by







                                      -25-


         1972, and no asbestos-containing products were produced after 1978.
         Certain of the asbestos lawsuits against U.S. Gypsum seek to recover
         compensatory and, in many cases, punitive damages for costs associated
         with the maintenance or removal and replacement of asbestos-containing
         products in buildings (the "Property Damage Cases"). Other asbestos
         lawsuits seek compensatory and, in many cases, punitive damages for
         personal injury allegedly resulting from exposure to
         asbestos-containing products (the "Personal Injury Cases"). A more
         detailed description of the Property Damage and Personal Injury Cases
         against U.S. Gypsum and certain other Debtors is set forth below.

         As a result of the Filing, all pending Personal Injury and Property
         Damage Cases against U.S. Gypsum are stayed, and no party may take any
         action to pursue or collect on these claims absent specific
         authorization of the Bankruptcy Court. Since the Filing, U.S. Gypsum
         has ceased making both cash payments and accruals with respect to
         asbestos lawsuits, including cash payments and accruals pursuant to
         settlements of asbestos lawsuits. The Bankruptcy Court has approved
         creditors' committees that represent claimants in Personal Injury and
         Property Damage Cases and, as noted below, a legal representative for
         future asbestos claimants.

         Debtors anticipate that U.S. Gypsum's liability for asbestos personal
         injury and property damage claims will be addressed in a plan of
         reorganization developed and approved in the bankruptcy proceeding. The
         Debtors' exclusive right to propose such a plan of reorganization has
         been extended by the Bankruptcy Court to September 1, 2003. The Debtors
         intend to seek one or more additional extensions depending upon
         developments in the Chapter 11 Cases.

         It is the Debtors' intention that the plan of reorganization will
         include creation of one or more independently administered trusts under
         Section 524(g) of the Bankruptcy Code, which will be funded by Debtors
         to allow payment of present and future asbestos personal injury claims
         and demands. Debtors intend that the plan of reorganization will also
         address Debtors' liability for asbestos property damage claims, whether
         by including those liabilities in a Section 524(g) trust or by other
         means. It is anticipated that, as a result of creation and funding of
         the Section 524(g) trust(s), the Bankruptcy Court will issue a
         permanent injunction barring the assertion of present and future
         asbestos claims against Debtors, their successors, and their
         affiliates, and channeling those claims to the trust(s) for payment in
         whole or in part. Similar plans of reorganization containing Section
         524(g) trusts have been confirmed in the chapter 11 cases of other
         companies with asbestos liabilities, but there is no guarantee that the
         Bankruptcy Court in Debtors' Chapter 11 Cases will approve creation of
         a Section 524(g) trust or issue a permanent injunction channeling to
         the trust all asbestos claims against Debtors and/or their successors
         and affiliates.



                                      -26-


         While it is the Debtors' intention to seek a full recovery for their
         creditors, it is not possible to predict how the plan of reorganization
         will treat asbestos and other pre-petition claims and what impact any
         plan may have on the value of the shares of the Corporation's common
         stock and other outstanding securities. Under the Bankruptcy Code, a
         plan of reorganization, including a plan creating a Section 524(g)
         trust, may be confirmed without the consent of non-asbestos creditors
         and equity security holders if certain requirements of the Code are
         met. There is no assurance that there will be sufficient assets to
         satisfy the Debtors' pre-petition liabilities in whole or in part, and
         the pre-petition creditors of some Debtors may be treated differently
         from the pre-petition creditors of other Debtors. The payment rights
         and other entitlements of pre-petition creditors and USG shareholders
         may be substantially altered by any plan or plans of reorganization
         confirmed in the Chapter 11 Cases. Pre-petition creditors may receive
         under the plan of reorganization less than 100% of the face value of
         their claims, and the interests of the Corporation's equity security
         holders are likely to be substantially diluted or cancelled in whole or
         in part.

         Whether the Corporation's equity has significant value and Debtors'
         non-asbestos creditors recover the full value of their claims depend
         upon the outcome of the analysis of the amount of Debtors' assets and
         liabilities, especially asbestos liabilities, that must be funded under
         the plan. Counsel for the Official Committee of Asbestos Personal
         Injury Claimants and counsel for the legal representative for future
         asbestos personal injury claimants have advised the court that is
         presiding over the Chapter 11 Cases that they believe Debtors' asbestos
         liabilities exceed the value of Debtors' assets and that Debtors are
         insolvent. The Debtors have advised the court that they believe they
         are solvent if their asbestos liabilities are fairly and appropriately
         valued. Toward that end, the Debtors filed a motion with the court
         requesting the court to begin proceedings to estimate the value of
         Debtors' asbestos personal injury liabilities.

         In response to the Debtors' motion requesting an estimation of asbestos
         personal injury liabilities, the court issued an order and memorandum
         opinion on February 19, 2003, setting forth a procedure for estimating
         Debtors' liability for asbestos personal injury claims alleging cancer.
         (see Developments in the Reorganization Proceeding, below.) At this
         stage in the proceedings, Debtors do not know when estimation of
         Debtors' liability for these cancer claims will occur, what the outcome
         of that proceeding will be, what impact that proceeding will have on
         estimating Debtors' liability for asbestos personal injury claims
         alleging other diseases, and whether the estimation proceeding will
         lead to a negotiated resolution of Debtors' asbestos personal injury
         liabilities. Debtors also cannot predict at this time the estimated
         cost of resolving asbestos property damage claims. If the amount of the
         Debtors' asbestos liabilities cannot be resolved through negotiation,
         as has been the case to date, the outcome of the estimation proceeding
         regarding Debtors' liability for



                                      -27-



         cancer claims likely will be a significant component of determining
         Debtors' asbestos personal injury liability, Debtors' solvency, and the
         recovery of Debtors' pre-petition creditors and equity security holders
         under any plan or plans of reorganization.

         As a result of this uncertainty, it is not possible at this time to
         predict the timing or outcome of the Chapter 11 Cases, the terms and
         provisions of any plan or plans of reorganization, or the effect of the
         chapter 11 reorganization process on the claims of pre-petition
         creditors of the Debtors or the interests of the Corporation's equity
         security holders. There can be no assurance as to the value of any
         distributions that might be made under any plan or plans of
         reorganization with respect to such pre-petition claims, equity
         interests, or other outstanding securities.

         Recent developments in the Corporation's bankruptcy proceeding and a
         more detailed discussion of the Debtors' asbestos liabilities are
         addressed below.

         DEVELOPMENTS IN THE REORGANIZATION PROCEEDING: During the fourth
         quarter of 2001, the Corporation's bankruptcy proceeding, along with
         four other asbestos-related bankruptcy proceedings pending in the
         federal courts in the District of Delaware, were assigned to the
         Honorable Alfred M. Wolin of the United States District Court for the
         District of New Jersey. Judge Wolin has indicated that he will handle
         all issues relating to asbestos personal injury claims and that other
         bankruptcy claims and issues in the Chapter 11 Cases, including issues
         relating to asbestos property damage claims, will remain assigned to
         Bankruptcy Judge Randall J. Newsome in the United States Bankruptcy
         Court for the District of Delaware.

         In July 2002, the Bankruptcy Court appointed the Honorable Dean M.
         Trafelet as the legal representative for future asbestos claimants in
         the Debtors' bankruptcy proceeding. Mr. Trafelet was formerly a judge
         of the Circuit Court of Cook County, Illinois.

         The Debtors filed a motion requesting Judge Wolin to conduct hearings
         to substantively estimate the Debtors' liability for asbestos personal
         injury claims. The Debtors requested that the court hear evidence and
         make rulings regarding the characteristics of valid asbestos personal
         injury claims against the Debtors, and then estimate the Debtors'
         liability for present and future asbestos personal injury claims based
         upon these rulings. One of the key liability issues is whether
         claimants who do not have objective evidence of asbestos-related
         disease have valid claims and are entitled to be compensated by
         Debtors, or whether such claimants are entitled to compensation only if
         and when they develop asbestos-related disease.

         The Official Committee of Asbestos Personal Injury Claimants opposed
         the substantive estimation hearings proposed by Debtors. The committee
         contends that U.S. Gypsum's liability for present and future asbestos
         personal


                                      -28-




         injury claims should be based on extrapolation from U.S. Gypsum's
         settlement history of such claims and not on litigating liability
         issues in the bankruptcy proceeding. The committee contends that the
         Court does not have the power to exclude claimants who do not meet
         objective evidence of asbestos-related disease if such claimants are
         compensated in the tort system outside of bankruptcy.

         In August 2002, Debtors also filed a motion with Judge Wolin requesting
         a ruling that putative claimants who cannot satisfy objective standards
         of asbestos-related disease are not entitled to vote on a Section
         524(g) plan. The Debtors' motion on this voting issue has been stayed
         by order of Judge Wolin. It is expected that the Official Committee of
         Asbestos Personal Injury Claimants will oppose the Debtors' motion.

         In response to the Debtors' motion seeking substantive estimation of
         Debtors' asbestos personal injury liability, Judge Wolin issued a
         Memorandum Opinion and Order ("Order") on February 19, 2003, setting
         forth a procedure for estimating Debtors' liability for asbestos
         personal injury claims alleging cancer. The Order states that a bar
         date will be established for filing claims by all persons who wish to
         assert an asbestos personal injury claim alleging cancer against
         Debtors. The bar date will not apply to non-malignant claims, which the
         Order states will not be addressed at this time.

         The Order provides that after the claims bar date for these cancer
         claims has passed, the Court will hold an estimation hearing under 11
         U.S.C. Section 502(c) at which the "debtors will be permitted to
         present their defenses." Although the Order explicitly contemplates a
         bar date for filing these cancer claims, the Order does not establish a
         bar date or a date for the subsequent estimation hearing. The Order
         contemplates that after the estimation of Debtors' liability for
         present and future cancer claims, the Court will determine whether
         Debtors' liability for these claims exceeds Debtors' assets. The Court
         notes that the Official Committee of Asbestos Personal Injury Claimants
         has asserted that the Debtors are insolvent and do not have sufficient
         assets to pay cancer claimants, without regard to Debtors' liability
         for non-malignant asbestos personal injury claims. The Court further
         notes that Debtors dispute this contention. According to the Order, the
         determination of whether the Debtors have sufficient assets to pay
         legitimate cancer claimants will guide the Court in determining whether
         the Debtors' resources should be spent resolving the issue of the
         validity of non-malignant claims where there is no objective evidence
         of asbestos-related disease.

         Pursuant to the Order, on March 21, 2003, the Debtors submitted to the
         court a proposed timetable for the bar date for cancer claims, a
         proposed proof of claim form, and a plan for providing notice of the
         bar date. The court has not yet determined when the bar date for the
         cancer claims will be or set a date for a hearing on estimation of
         Debtors' liability for



                                      -29-




         these claims.

         At this stage in the proceedings, Debtors do not know when estimation
         of Debtors' liability for these cancer claims will occur, what the
         outcome of the estimation proceeding will be, what impact that
         proceeding will have on estimating Debtors' liability for asbestos
         personal injury claims alleging other diseases, and whether the
         estimation proceeding will lead to a negotiated resolution of Debtors'
         asbestos liabilities. Debtors also do not know whether the Court will
         ultimately address the validity and voting rights of non-malignant
         claims. If the amount of the Debtors' asbestos liabilities cannot be
         resolved through negotiation, as has been the case to date, the outcome
         of the estimation proceeding regarding Debtors' liability for cancer
         claims likely will be a significant component of determining Debtors'
         asbestos personal injury liability, Debtors' solvency, and the recovery
         of Debtors' pre-petition creditors and equity security holders under
         any plan or plans of reorganization.

         There have also been developments in the reorganization proceedings
         regarding asbestos property damage claims. The Bankruptcy Court
         established a bar date of January 15, 2003, by which all entities with
         asbestos-related property damage claims or any other types of claims
         (except asbestos personal injury claims or claims derivative thereof)
         must file their claims against the Debtors in the bankruptcy
         proceeding. The Debtors mailed and published notice of the claims bar
         date to potential asbestos property damage claimants as well as other
         claimants affected by the bar date.

         The Debtors have made a preliminary analysis of the asbestos-related
         property damage claims received as of the claims bar date.
         Approximately 1,400 asbestos property damage claims were filed,
         representing more than 2,000 buildings. In contrast, as of the Petition
         Date, 11 Property Damage Cases were pending against U.S. Gypsum.
         Approximately 500 of the asbestos property damage claims filed by the
         bar date assert a specific dollar amount of damages, and the total
         damages alleged in those claims is approximately $1.6 billion. However,
         this amount reflects numerous duplicate claims filed against multiple
         Debtors, and therefore, likely overstates the claimed damages.
         Approximately 900 claims do not specify a damage amount. Many of the
         filed claims do not provide any evidence that Debtors' products were
         ever installed in any of the buildings at issue, and some of the claims
         are duplicates of other claims. Debtors believe that they have
         substantial defenses to many of these property damage claims, including
         the lack of evidence that Debtors' products were ever installed in the
         buildings at issue, the claims are barred by the applicable statutes of
         limitation, and the claims lack evidence that the claimants have any
         damages. Debtors intend to address many of these claims through an
         objection and disallowance process in the bankruptcy court. Because of
         the preliminary nature of this process, Debtors' cannot predict the
         outcome of these proceedings or the impact the proceedings may have on
         the estimated cost of resolving asbestos property damage claims (see
         Estimated Cost,


                                      -30-




         below).

         The following is a summary of the Property Damage and Personal Injury
         Cases pending against U.S. Gypsum and certain other Debtors as of the
         Petition Date.

         PROPERTY DAMAGE CASES: As of the Petition Date, U.S. Gypsum was a
         defendant in 11 Property Damage Cases, most of which involved multiple
         buildings. One of the cases is a conditionally certified class action
         comprising all colleges and universities in the United States, which
         certification is presently limited to the resolution of certain
         allegedly "common" liability issues. (Central Wesleyan College v. W.R.
         Grace & Co., et al., U.S.D.C. S.C.). On June 15, 2001, a Property
         Damage Case was filed by The County of Orange, Texas, in the district
         court of Orange County, Texas, naming as defendants U.S. Gypsum and
         other manufacturers of asbestos-containing materials. This was the
         first Property Damage case filed against U.S. Gypsum since June 1998.
         The Orange County case is a putative class action brought by The County
         of Orange on behalf of an alleged class comprising the State of Texas,
         its public colleges and universities, and all political subdivisions of
         the State of Texas. As to U.S. Gypsum, the putative class also includes
         all private and/or non-public colleges, universities, junior colleges,
         community colleges, and elementary and secondary schools in the State
         of Texas. The Orange County action seeks recovery of the costs of
         removing and replacing asbestos-containing materials in buildings at
         issue as well as punitive damages. The complaint does not specify how
         many buildings are at issue. As a result of the Filing, all Property
         Damage Cases, including the Central Wesleyan and Orange County cases,
         are stayed against U.S. Gypsum. U.S. Gypsum's estimated cost of
         resolving the Property Damage Cases is discussed below (see Estimated
         Cost).

         PERSONAL INJURY CASES: As reported by the Center for Claims Resolution
         (the "Center"), U.S. Gypsum was a defendant in approximately 106,000
         pending Personal Injury Cases as of the Petition Date, as well as an
         additional approximately 52,000 Personal Injury Cases that are the
         subject of settlement agreements. In the first half of 2001, up to the
         Petition Date, approximately 26,200 new Personal Injury Cases were
         filed against U.S. Gypsum, as reported by the Center, as compared to
         27,800 new filings in the first half of 2000. Filings of new Personal
         Injury Cases totaled approximately 53,000 claims in 2000, 48,000 claims
         in 1999, and 80,000 claims in 1998.

         Prior to the Filing, U.S. Gypsum managed the handling and settlement of
         Personal Injury Cases through its membership in the Center. From 1988
         up to February 1, 2001, the Center administered and arranged for the
         defense and settlement of Personal Injury Cases against U.S. Gypsum and
         other Center members. During that period, costs of defense and
         settlement of Personal Injury Cases were shared among the members of
         the Center pursuant to predetermined sharing formulae. Effective
         February 1, 2001, the Center




                                      -31-




         members, including U.S. Gypsum, ended their prior settlement-sharing
         arrangement. The Center continued to administer and arrange for the
         defense and settlement of the Personal Injury Cases, but liability
         payments were not shared among the Center members. As of the Petition
         Date and as a result of the stay of asbestos lawsuits against U.S.
         Gypsum, U.S. Gypsum no longer requires the services of the Center in
         negotiating or defending Personal Injury Cases.

         In 2000 and years prior, U.S. Gypsum and other Center members
         negotiated a number of settlements with plaintiffs' law firms that
         included agreements to resolve over time the firms' pending Personal
         Injury Cases as well as certain future claims (the "Long-Term
         Settlements"). With regard to future claims, these Long-Term
         Settlements typically provide that the plaintiffs' firms will recommend
         to their future clients that they defer filing, or accept nominal
         payments on, personal injury claims that do not meet established
         disease criteria, and, with regard to those claims meeting established
         disease criteria, that the future clients accept specified amounts to
         settle those claims. These Long-Term Settlements typically resolve
         claims for amounts consistent with historical per-claim settlement
         costs paid to the plaintiffs' firms involved. As a result of the
         Filing, cash payments by U.S. Gypsum under these Long-Term Settlements
         have ceased, and U.S. Gypsum expects that its obligations under these
         settlements will be determined in the bankruptcy proceeding and plan of
         reorganization.

         In 2000, U.S. Gypsum closed approximately 57,000 Personal Injury Cases.
         U.S. Gypsum's cash payments in 2000 to defend and resolve Personal
         Injury Cases totaled $162 million, of which $90 million was paid or
         reimbursed by insurance. In 2000, the average settlement per case was
         approximately $2,600, exclusive of defense costs. U.S. Gypsum made cash
         payments of $100 million in 1999 and $61 million in 1998 to resolve
         Personal Injury Cases, of which $85 million and $45.5 million,
         respectively, were paid or reimbursed by insurance.

         In the first and second quarters of 2001, prior to the Filing, payments
         to resolve Personal Injury Cases increased dramatically, primarily as a
         result of the bankruptcy filings of other defendants in asbestos
         personal injury lawsuits. Following these bankruptcy filings,
         plaintiffs substantially increased their settlement demands to the
         remaining defendants, including U.S. Gypsum. In response to these
         increased settlement demands, U.S. Gypsum attempted to manage its
         asbestos liability by contesting, rather than settling, a greater
         number of cases that it believed to be non-meritorious. As a result, in
         the first and second quarters of 2001, U.S. Gypsum agreed to settle
         fewer Personal Injury Cases, but at a significantly higher cost per
         case.

         In the first half of 2001 (up to the Petition Date), U.S. Gypsum closed
         approximately 18,900 Personal Injury Cases. In the first half of 2001
         (up to the Petition Date), U.S. Gypsum's total asbestos-related cash
         payments,



                                      -32-




         including defense costs, were approximately $124 million, of which
         approximately $10 million was paid or reimbursed by insurance. A
         portion of these payments were for settlements agreed to in prior
         periods. As of March 31, 2001, U.S. Gypsum had estimated that cash
         expenditures for Personal Injury Cases in 2001 would total
         approximately $275 million before insurance recoveries of approximately
         $37 million.

         In addition to the Personal Injury Cases pending against U.S. Gypsum,
         one of the Corporation's subsidiaries and a Debtor in the bankruptcy
         proceeding, L&W Supply, was named as a defendant in approximately 21
         pending Personal Injury Cases as of the Petition Date. L&W Supply, a
         distributor of building products manufactured by U.S. Gypsum and other
         building products manufacturers, has not made any payments in the past
         to resolve Personal Injury Cases. Because of the small number of
         Personal Injury Cases against L&W Supply to date and the lack of
         development of the cases against L&W Supply, the Corporation does not
         have sufficient information at this time to predict as to how any plan
         or plans of reorganization will address any asbestos-related liability
         of L&W Supply and whether any such liability will be limited to L&W
         Supply's role as a distributor of U.S. Gypsum products.

         One of U.S. Gypsum's subsidiaries and a Debtor in the bankruptcy
         proceeding, Beadex Manufacturing, LLC ("Beadex"), manufactured and sold
         joint compound containing asbestos from 1963 through 1978 in the
         northwest United States. As of the Petition Date, Beadex was a named
         defendant in approximately 40 Personal Injury Cases pending primarily
         in the states of Washington and Oregon. Beadex has approximately $11
         million in primary or umbrella insurance coverage available to pay
         asbestos-related costs, as well as $15 million in available excess
         coverage. The Corporation expects that any asbestos-related liability
         of Beadex will be addressed in the plan of reorganization. However,
         because of the small number of Personal Injury Cases pending against
         Beadex to date, the Corporation does not have sufficient information at
         this time to predict as to how any plan or plans of reorganization will
         address any asbestos-related liability of Beadex.

         INSURANCE COVERAGE: During the first quarter of 2003, U.S. Gypsum
         received $15 million of insurance payments. As of March 31, 2003, U.S.
         Gypsum had $15 million of insurance remaining to cover asbestos-related
         costs. The remaining insurance is scheduled to be collected at various
         times through the next 12 months and is included in other current
         assets on the consolidated balance sheet.

         ESTIMATED COST: In evaluating U.S. Gypsum's estimated asbestos
         liability prior to the Filing, the Corporation considered numerous
         uncertainties that made it difficult to estimate reliably U.S. Gypsum's
         asbestos liability in the tort system for both pending and future
         asbestos claims.

         In the Property Damage Cases, such uncertainties included, but were not



                                      -33-




         limited to, the identification and volume of asbestos-containing
         products in the buildings at issue in each case, which is often
         disputed; the claimed damages associated therewith; the viability of
         statute of limitations, product identification and other defenses,
         which varies depending upon the facts and jurisdiction of each case;
         the amount for which such cases can be resolved, which normally (but
         not uniformly) has been substantially lower than the claimed damages;
         and the viability of claims for punitive and other forms of multiple
         damages.

         Uncertainties in the Personal Injury Cases included, but were not
         limited to, the number, disease and occupational characteristics, and
         venue of Personal Injury Cases that are filed against U.S. Gypsum; the
         age and level of asbestos-related disease of claimants; the viability
         of claims for conspiracy or punitive damages; the elimination of
         indemnity sharing among Center members for future settlements and its
         negative impact on U.S. Gypsum's ability to continue to resolve claims
         at historical or acceptable levels; the adverse impact on U.S. Gypsum's
         settlement costs of recent bankruptcies of co-defendants; the continued
         solvency of other defendants and the possibility of additional
         bankruptcies; the possibility of significant adverse verdicts due to
         recent changes in settlement strategies and related effects on
         liquidity; the inability or refusal of former Center members to fund
         their share of existing settlements and its effect on such settlement
         agreements; the continued ability to negotiate settlements or develop
         other mechanisms that defer or reduce claims from unimpaired claimants;
         and the possibility that federal legislation addressing asbestos
         litigation would be enacted. The Corporation reported that adverse
         developments with respect to any of these uncertainties could have a
         material impact on U.S. Gypsum's settlement costs and could materially
         increase the cost above the estimated range discussed below.

         Prior to the fourth quarter of 2000, the Corporation, in the opinion of
         management, was unable to reasonably estimate the probable cost of
         resolving future asbestos claims in the tort system, although the
         Corporation had estimated and reserved for costs associated with
         then-pending claims. However, in 1999 and increasingly in 2000, as U.S.
         Gypsum entered into Long-Term Settlements of Personal Injury Cases, the
         Corporation undertook a detailed, independent study of U.S. Gypsum's
         current and potential future asbestos liability. This analysis was
         based on the assumption that U.S. Gypsum's asbestos liability would
         continue to be resolved in the tort system. The analysis was completed
         in the fourth quarter of 2000.

         As part of this analysis, the Corporation reviewed, among other things,
         historical case filings and increasing settlement costs; the type of
         products U.S. Gypsum sold and the occupations of claimants expected to
         bring future asbestos-related claims; epidemiological data concerning
         the incidence of past and projected future asbestos-related diseases;
         trends in the propensity of persons alleging asbestos-related disease
         to sue U.S.




                                      -34-




         Gypsum; the adverse effect on settlement costs of historical reductions
         in the number of solvent defendants available to pay claims, including
         reductions in membership of the Center; the pre-agreed settlement
         recommendations in, and the continued viability of, the Long-Term
         Settlements described above; and anticipated trends in recruitment by
         plaintiffs' law firms of non-malignant or unimpaired claimants. The
         study attempted to weigh relevant variables and assess the impact of
         likely outcomes on future case filings and settlement costs. In
         addition, the Corporation considered future defense costs, as well as
         allegations that U.S. Gypsum and the other Center members bear joint
         liability for the share of certain settlement agreements that was to be
         paid by former members that now have refused or are unable to pay.

         In the fourth quarter of 2000, the Corporation concluded that it was
         possible to provide a reasonable estimate of U.S. Gypsum's liability in
         the tort system for asbestos cases to be filed through 2003 as well as
         those currently pending. Based on an independent study, the Corporation
         determined that, although substantial uncertainty remained, it was
         probable that asbestos claims currently pending against U.S. Gypsum and
         future asbestos claims to be filed against it through 2003 (both
         property damage and personal injury) could be resolved in the tort
         system for an amount between $889 million and $1,281 million, including
         defense costs, and that within this range the most likely estimate was
         $1,185 million. Consistent with this analysis, in the fourth quarter of
         2000, the Corporation recorded a pretax noncash charge of $850 million
         to results of operations, which, combined with the previously existing
         reserve, increased U.S. Gypsum's reserve for asbestos claims to $1,185
         million. Substantially all of this reserve relates to the estimated
         costs of resolving then-pending asbestos personal injury claims and
         those expected to be filed through 2003, and the reserve reflected
         management's expectation that U.S. Gypsum's average payment per
         asbestos personal injury claim would increase at least in the short
         term due to distortions caused by the bankruptcy filings of other
         asbestos personal injury defendants discussed above. Less than 10
         percent of the reserve is attributable to defense and administrative
         costs.

         At the time of recording this reserve, it was expected that the reserve
         amounts would be expended over a period extending several years beyond
         2003, because asbestos cases have historically been resolved an average
         of three years after filing. The Corporation concluded that it did not
         have adequate information to allow it to reasonably estimate the number
         of claims to be filed after 2003, or the liability associated with such
         claims.

         During 2001 up to the Filing, U.S. Gypsum's cash payments for asbestos
         claims and related legal fees totaled approximately $124 million,
         reducing its reserve for asbestos claims to $1,061 million as of June
         30, 2001. The reserve remained at $1,061 million as of March 31, 2003.
         The above amounts are stated before tax benefit and are not discounted
         to present value.




                                      -35-




         It is the Corporation's view that, as a result of the Filing, there is
         even greater uncertainty in estimating the reasonably possible range of
         asbestos liability for pending and future claims as well as the most
         likely estimate of liability within this range. There are significant
         differences in the treatment of asbestos claims in a bankruptcy
         proceeding as compared to the tort litigation system. Among other
         things, these uncertainties include how the Long-Term Settlements will
         be treated in the bankruptcy proceeding and plan of reorganization and
         whether those settlements will be set aside; the number of
         asbestos-related claims that will be filed in the proceeding; the
         number of future claims that will be estimated in connection with
         preparing a plan of reorganization; how claims for punitive damages and
         claims by persons with no asbestos-related disease will be treated and
         whether such claims will be allowed; the impact historical settlement
         values for asbestos claims may have on the estimation of asbestos
         liability in the bankruptcy proceeding; the results of the estimation
         proceeding regarding asbestos personal injury claims alleging cancer;
         the treatment of asbestos property damage claims in the bankruptcy
         proceeding; and the impact any relevant potential federal legislation
         may have on the proceeding. These factors, as well as the uncertainties
         discussed above in connection with the resolution of asbestos cases in
         the tort system, increase the uncertainty of any estimate of asbestos
         liability.

         As a result, it is the Corporation's view that no change should be made
         at this time to the previously recorded reserve for asbestos claims,
         except to reflect certain minor asbestos-related costs incurred since
         the Filing. However, it is possible that the cost of resolving asbestos
         claims in the Chapter 11 Cases will be greater than that set forth in
         the high end of the range estimated in 2000. Counsel for the Official
         Committee of Asbestos Personal Injury Claimants and counsel for the
         legal representative for future asbestos personal injury claimants,
         appointed in the Chapter 11 Cases, have indicated that they believe
         that the liabilities for pending and future asbestos claims exceed the
         value of Debtors' assets, and, therefore, are significantly greater
         than both the reserved amount and the high end of the range estimated
         in 2000. As the Chapter 11 Cases proceed, and the court addresses the
         issues relating to estimation of Debtors' asbestos liabilities, the
         Debtors likely will gain more information from which a reasonable
         estimate of the Debtors' probable asbestos liability may be determined.
         If such estimate differs from the existing reserve, the reserve will be
         adjusted to reflect the estimate, and it is possible that a charge to
         results of operations will be necessary at that time. It is also
         possible that, in such a case, the Debtors' asbestos liability may vary
         significantly from the recorded estimate of liability and that this
         difference could be material to the Corporation's financial position,
         results of operations and cash flows in the period recorded.

         BOND TO SECURE CERTAIN CCR OBLIGATIONS: In January 2001, U.S. Gypsum
         obtained a performance bond from Safeco Insurance Company of America



                                      -36-




         ("Safeco") in the amount of $60.3 million to secure certain obligations
         of U.S. Gypsum for extended payout settlements of Personal Injury Cases
         and other obligations owed by U.S. Gypsum to the Center. The bond is
         secured by an irrevocable letter of credit obtained by the Corporation
         in the amount of $60.3 million and issued by Chase Manhattan Bank to
         Safeco. After the Filing, by letter dated July 6, 2001, the Center
         stated that certain amounts allegedly covered by the bond, totaling
         approximately $15.7 million, were overdue from U.S. Gypsum to the
         Center. In subsequent letters dated November 19, 2001, and December 11,
         2001, the Center stated that additional amounts allegedly covered by
         the bond totaling approximately $14 million and $113 million,
         respectively, were also overdue from U.S. Gypsum. The amounts for which
         the Center made demand were for the payment of, among other things,
         settlements of Personal Injury Cases that were entered into
         pre-petition. By letter dated November 16, 2001, the Center made a
         demand to Safeco for payment of $15.7 million under the bond, and by
         letter dated December 28, 2001, the Center made a demand to Safeco for
         payment of approximately $127 million under the bond. The total amount
         demanded by the Center under the bond, approximately $143 million,
         exceeds the original penal sum of the bond, which is $60.3 million.
         Safeco has not made any payment under the bond.

         On November 30, 2001, the Corporation and U.S. Gypsum filed an
         Adversary Complaint in the Chapter 11 Cases to, among other things,
         enjoin the Center from drawing on the bond and enjoin Safeco from
         paying on the bond during the pendency of these bankruptcy proceedings.
         This Adversary Proceeding is pending in the United States Bankruptcy
         Court for the District of Delaware and is captioned USG Corporation and
         United States Gypsum Company v. Center for Claims Resolution, Inc. and
         Safeco Insurance Company of America, No. 01-08932. Judge Wolin has
         consolidated the Adversary Proceeding with similar adversary
         proceedings brought by Federal-Mogul Corp., et al., and Armstrong World
         Industries, Inc., et al., in their bankruptcy proceedings. The parties
         filed cross-motions for summary judgment in the consolidated
         proceedings.

         On March 28, 2003, in response to the cross-motions for summary
         judgment, Judge Wolin issued an order and memorandum opinion which
         granted in part and denied in part the CCR's motion for summary
         judgment. Although the court ruled that Safeco is not required to remit
         any surety bond proceeds to the CCR at this time, the court stated that
         certain settlements that were completed before U.S. Gypsum's Petition
         Date likely are covered by the surety bond but that the bond does not
         cover settlement payments that were not yet due as of the Petition
         Date. The court did not rule on whether the bond covers other disputed
         obligations and reserved these issues to a subsequent phase of the
         litigation. As a result of the court's decision, it is likely that,
         absent a settlement of this matter, some portion of the bond may be
         drawn but that the amount drawn will be substantially less than the
         full amount of the bond. To the extent that Safeco were to pay any
         portion of the bond, it is likely that Safeco would draw down the Chase




                                      -37-



         letter of credit to cover the bond payment and Chase would assert a
         pre-petition claim in a corresponding amount against the Corporation in
         the bankruptcy proceeding.

         CONCLUSION: There are many uncertainties associated with the resolution
         of asbestos liability in the bankruptcy proceeding. These uncertainties
         include, among others, the number of asbestos-related claims that will
         be filed against the Debtors in the proceeding; the number of future
         claims that will be estimated in connection with preparing a plan of
         reorganization; how the Long-Term Settlements will be treated in the
         bankruptcy proceeding and plan of reorganization, and whether those
         settlements will be set aside; how claims for punitive damages and
         claims by persons with no asbestos-related physical impairment will be
         treated and whether such claims will be allowed; the impact historical
         settlement values for asbestos claims may have on the estimation of
         asbestos liability in the bankruptcy proceeding; the results of the
         estimation proceeding regarding asbestos personal injury claims
         alleging cancer; the treatment of asbestos property damage claims in
         the bankruptcy proceeding; and the impact any relevant potential
         federal legislation may have on the proceeding. The Corporation has not
         revised its previously recorded reserve for asbestos liability. The
         Corporation will continue to review its asbestos liability as the
         Chapter 11 Cases progress. When a reasonable estimate can be made of
         the Debtors' probable liability for asbestos claims, if such estimate
         differs from the existing reserve, the reserve will be adjusted to
         reflect the estimate, and it is possible that a charge to results of
         operations will be necessary at that time. It is possible that the
         Corporation's asbestos liability may vary significantly from the
         recorded estimate of liability and that this difference could be
         material to the Corporation's financial position, results of operations
         and cash flows in the period recorded.

         ENVIRONMENTAL LITIGATION

         The Corporation and certain of its subsidiaries have been notified by
         state and federal environmental protection agencies of possible
         involvement as one of numerous "potentially responsible parties" in a
         number of so-called "Superfund" sites in the United States. In most of
         these sites, the involvement of the Corporation or its subsidiaries is
         expected to be minimal. The Corporation believes that appropriate
         reserves have been established for its potential liability in
         connection with all Superfund sites but is continuing to review its
         accruals as additional information becomes available. Such reserves
         take into account all known or estimated, undiscounted costs associated
         with these sites, including site investigations and feasibility costs,
         site cleanup and remediation, legal costs, and fines and penalties, if
         any. In addition, environmental costs connected with site cleanups on
         Corporation-owned property also are covered by reserves established in
         accordance with the foregoing. The Debtors have been given permission
         by the Bankruptcy Court to satisfy environmental



                                      -38-




         obligations up to $12 million. The Corporation believes that neither
         these matters nor any other known governmental proceeding regarding
         environmental matters will have a material adverse effect upon its
         financial position, results of operations or cash flows.











































                                      -39-




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


VOLUNTARY REORGANIZATION UNDER CHAPTER 11
On June 25, 2001 (the "Petition Date"), the parent company (the "Parent
Company") of the Corporation and the 10 United States subsidiaries listed below
(collectively, the "Debtors") filed voluntary petitions for reorganization (the
"Filing") under chapter 11 of the United States Bankruptcy Code (the "Bankruptcy
Code") in the United States Bankruptcy Court for the District of Delaware (the
"Bankruptcy Court"). The chapter 11 cases of the Debtors (collectively, the
"Chapter 11 Cases") are being jointly administered as In re: USG Corporation et
al. (Case No. 01-2094). The Chapter 11 Cases do not include any of the
Corporation's non-U.S. subsidiaries. The following subsidiaries filed chapter 11
petitions: United States Gypsum Company; USG Interiors, Inc.; USG Interiors
International, Inc.; L&W Supply Corporation; Beadex Manufacturing, LLC; B-R
Pipeline Company; La Mirada Products Co., Inc.; Stocking Specialists, Inc.; USG
Industries, Inc.; and USG Pipeline Company.

This action was taken to resolve asbestos-related claims in a fair and equitable
manner, to protect the long-term value of the Debtors' businesses and to
maintain the Debtors' leadership positions in their markets.

BACKGROUND OF THE FILING
U.S. Gypsum, a subsidiary of the Parent Company, is a defendant in asbestos
lawsuits alleging both property damage and personal injury. Since 1994, U.S.
Gypsum has been named in more than 250,000 asbestos personal injury claims and
made cash payments of approximately $575 million (before insurance recoveries)
to manage and resolve asbestos-related claims. During 2000 and early 2001,
chapter 11 filings by other companies subject to asbestos litigation caused a
dramatic increase in U.S. Gypsum's asbestos costs beyond its legitimate
liabilities. Plaintiffs in asbestos lawsuits substantially increased their
settlement demands to U.S. Gypsum to replace the expected payments of the
bankruptcy defendants. Although the Corporation has been and continues to be
committed to finding a legislative solution to the increase in asbestos costs,
it became apparent in 2001 that a timely resolution to the problem through
legislation was not feasible. The Corporation determined that voluntary
protection under chapter 11 would be the best alternative for obtaining a fair
and final resolution of U.S. Gypsum's asbestos liability and the best way to
preserve value for stakeholders. See Part I, Item 1. Note 12. Litigation, for
additional information on asbestos litigation.

Based on an independent study conducted in 2000 and on U.S. Gypsum's historical
experience of litigating asbestos claims in the tort system, the Corporation
estimated that U.S. Gypsum's probable liability for costs associated with
asbestos cases pending as of December 31, 2000, and expected to be filed through
2003 to be between $889 million and $1,281 million, including defense costs. In
the fourth quarter of 2000, U.S. Gypsum recorded a noncash, pretax provision of




                                      -40-

$850 million, increasing its total accrued reserve for asbestos claims to $1,185
million as of December 31, 2000. Substantially all of this reserve related to
personal injury claims and reflected management's expectation that U.S. Gypsum's
average cost per case would increase, at least in the short term, due to
distortions in the tort system resulting from the bankruptcies of other
defendants that led to increased settlement demands from asbestos plaintiffs.
Less than 10% of the reserve related to defense and administrative costs.
Between January 1, 2001, and the Petition Date, according to the Center for
Claims Resolution (the "Center"), U.S. Gypsum was served with more than 26,000
new claims. On a cash basis, U.S. Gypsum's asbestos-related personal injury
costs (before insurance) rose from $30 million in 1997 to $162 million in 2000
and, absent the Filing, were expected to exceed $275 million in 2001.

Because of the Filing, there is greater uncertainty concerning the liability
associated with asbestos cases. As a result, it is the Corporation's view that
no change should be made at this time to the previously recorded reserve for
asbestos claims, except to reflect certain minor asbestos-related costs incurred
since the Filing. However, it is possible that the cost of resolving asbestos
claims in the Chapter 11 Cases will be greater than that set forth in the high
end of the range estimated in 2000. Counsel for the Official Committee of
Asbestos Personal Injury Claimants and counsel for the legal representative for
future asbestos personal injury claimants, appointed in the Chapter 11 Cases,
have indicated that they believe that the liabilities for pending and future
asbestos claims exceed the value of Debtors' assets, and, therefore, are
significantly greater than both the reserved amount and the high end of the
range estimated in 2000. As the Chapter 11 Cases proceed, and the court
addresses the issues relating to estimation of Debtors' asbestos liabilities,
the Debtors likely will gain more information from which a reasonable estimate
of the Debtors' probable asbestos liability may be determined. If such estimate
differs from the existing reserve, the reserve will be adjusted to reflect the
estimate, and it is possible that a charge to results of operations will be
necessary at that time. It is also possible that, in such a case, the Debtors'
asbestos liability may vary significantly from the recorded estimate of
liability and that this difference could be material to the Corporation's
financial position, results of operations and cash flows in the period recorded.

CONSEQUENCES OF THE FILING
The Debtors are operating their businesses without interruption as
debtors-in-possession subject to the provisions of the Bankruptcy Code. All
vendors are being paid for all goods furnished and services provided after the
Filing. However, as a consequence of the Filing, pending litigation against the
Debtors as of the Petition Date is stayed, and no party may take any action to
pursue or collect pre-petition claims except pursuant to an order of the
Bankruptcy Court.

Three creditors' committees, one representing asbestos personal injury
claimants, another representing asbestos property damage claimants, and a third
representing general unsecured creditors, were appointed as official committees
in the Chapter 11 Cases and, in accordance with the provisions of the Bankruptcy
Code, will have

                                      -41-




the right to be heard on all matters that come before the Bankruptcy Court. The
Bankruptcy Court also appointed the Honorable Dean M. Trafelet as the legal
representative for future asbestos claimants in the Debtors' bankruptcy
proceeding. Mr. Trafelet was formerly a judge of the Circuit Court of Cook
County, Illinois. The Debtors expect that the appointed committees, together
with Mr. Trafelet, will play important roles in the Chapter 11 Cases and the
negotiation of the terms of any plan of reorganization.

Debtors intend to address all pending and future asbestos personal injury claims
as well as all other pre-petition claims in a plan or plans of reorganization
confirmed by the Bankruptcy Court. Debtors also intend that the plan will
include the creation of one or more independently administered trusts under
Section 524(g) of the Bankruptcy Code, which will be funded by Debtors to allow
payment of present and future asbestos personal injury claims and demands.
Debtors expect that the plan of reorganization will also address Debtors'
liability for asbestos property damage claims, whether by including those
liabilities in a Section 524(g) trust or by other means.

It is anticipated that, as a result of creation and funding of the Section
524(g) trust(s), the Bankruptcy Court will issue a permanent injunction barring
the assertion of present and future asbestos claims against Debtors, their
successors, and their affiliates, and channeling those claims to the trust(s)
for payment in whole or in part. Section 524(g) contains specific requirements
for issuance of such a permanent injunction, including the requirement that the
trust must own, or have the right to own upon the occurrence of contingencies
specified in the plan of reorganization, a majority of the voting shares of the
debtor or its parent. Section 524(g) also requires that the plan be approved by
75% of the voting asbestos claimants whose claims are addressed by the trust.
Similar plans of reorganization containing Section 524(g) trusts have been
confirmed in the chapter 11 cases of other companies with asbestos liabilities,
but there is no guarantee that the Bankruptcy Court in Debtors' Chapter 11 Cases
will approve creation of a Section 524(g) trust or issue a permanent injunction
channeling to the trust all asbestos claims against Debtors, and/or their
successors and affiliates.

Pursuant to the Bankruptcy Code, the Debtors had the exclusive right to propose
a plan of reorganization for 120 days following the Petition Date, unless
extended. The Bankruptcy Court has granted requests by the Debtors to extend the
period of exclusivity, which currently runs through September 1, 2003. The
Debtors intend to seek one or more additional extensions depending upon
developments in the Chapter 11 Cases. If the Debtors fail to file a plan of
reorganization during such extension period, or if such plan is not accepted by
the requisite numbers of creditors and equity holders entitled to vote on the
plan, other parties in interest in the Chapter 11 Cases may be permitted to
propose their own plan(s) of reorganization for the Debtors.

While it is the Debtors' intention to seek a full recovery for their creditors,
it is not possible to predict how the plan of reorganization will treat asbestos

                                      -42-





and other pre-petition claims and what impact any plan may have on the value of
the shares of the Corporation's common stock and other outstanding securities.
Under the Bankruptcy Code, a plan of reorganization, including a plan creating a
Section 524(g) trust, may be confirmed without the consent of non-asbestos
creditors and equity security holders if certain requirements of the Code are
met. There is no assurance that there will be sufficient assets to satisfy the
Debtors' pre-petition liabilities in whole or in part, and the pre-petition
creditors of some Debtors may be treated differently from the pre-petition
creditors of other Debtors. The payment rights and other entitlements of
pre-petition creditors and USG shareholders may be substantially altered by any
plan or plans of reorganization confirmed in the Chapter 11 Cases. Pre-petition
creditors may receive under the plan of reorganization less than 100% of the
face value of their claims, and the interests of the Corporation's equity
security holders are likely to be substantially diluted or cancelled in whole or
in part.

It is also not possible to predict at this time how the plan of
reorganization will treat intercompany indebtedness, licenses, transfers of
goods and services and other intercompany arrangements, transactions, and
relationships that were entered into before the Petition Date. These
arrangements, transactions, and relationships may be challenged by various
parties in the Chapter 11 Cases, and the outcome of those challenges, if any,
may have an impact on the treatment of various claims under any plan of
reorganization.

Whether the Corporation's equity has significant value and Debtors' non-asbestos
creditors recover the full value of their claims depend upon the outcome of the
analysis of the amount of Debtors' assets and liabilities, especially asbestos
liabilities, that must be funded under the plan. Counsel for the Official
Committee of Asbestos Personal Injury Claimants and counsel for the legal
representative for future asbestos personal injury claimants have advised the
court that is presiding over the Chapter 11 Cases that they believe Debtors'
asbestos liabilities exceed the value of Debtors' assets and that Debtors are
insolvent. The Debtors have advised the court that they believe they are solvent
if their asbestos liabilities are fairly and appropriately valued. Toward that
end, the Debtors filed a motion with the court requesting the court to begin
proceedings to estimate the value of Debtors' asbestos personal injury
liabilities.

In response to the Debtors' motion requesting an estimation of asbestos personal
injury liabilities, the court issued an order and memorandum opinion on February
19, 2003, setting forth a procedure for estimating Debtors' liability for
asbestos personal injury claims alleging cancer. (See Note 12. Litigation, for
additional information on this procedure.) At this stage in the proceedings,
Debtors do not know when estimation of Debtors' liability for these cancer
claims will occur, what the outcome of that proceeding will be, what impact that
proceeding will have on estimating Debtors' liability for asbestos personal
injury claims alleging other diseases, and whether the estimation proceeding
will lead to a negotiated resolution of Debtors' asbestos personal injury
liabilities. Debtors also cannot predict at this time the estimated cost of
resolving asbestos

                                      -43-





property damage claims (see Note 12, Litigation, for additional information.) If
the amount of the Debtors' asbestos liabilities cannot be resolved through
negotiation, as has been the case to date, the outcome of the estimation
proceedings regarding Debtors' liability for cancer claims likely will be a
significant component of determining Debtors' asbestos personal injury
liability, Debtors' solvency, and the recovery of Debtors' pre-petition
creditors and equity security holders under any plan or plans of reorganization.

As a result of this uncertainty, it is not possible at this time to predict the
timing or outcome of the Chapter 11 Cases, the terms and provisions of any plan
or plans of reorganization, or the effect of the chapter 11 reorganization
process on the claims of pre-petition creditors of the Debtors or the interests
of the Corporation's equity security holders. There can be no assurance as to
the value of any distributions that might be made under any plan or plans of
reorganization with respect to such pre-petition claims, equity interests, or
other outstanding securities. Recent developments in the Corporation's
bankruptcy proceeding are discussed in Note 12. Litigation.

CHAPTER 11 FINANCING
On July 31, 2001, a $350 million debtor-in-possession financing facility (the
"DIP Facility") was approved by the Bankruptcy Court to supplement liquidity and
fund operations during the reorganization process. In January 2003, the
Corporation reduced the size of the DIP Facility to $100 million. This action
was taken at the election of the Corporation due to the levels of cash and
marketable securities on hand and to reduce costs associated with the DIP
Facility. The resulting DIP Facility will be used largely to support the
issuance of standby letters of credit needed for the Corporation's business
operations. The Corporation believes that cash and marketable securities on hand
and future cash available from operations will provide sufficient liquidity to
allow its businesses to operate in the normal course without interruption for
the duration of the chapter 11 proceedings. The DIP Facility is provided by a
syndicate of lenders led by JPMorgan Chase Bank (formerly The Chase Manhattan
Bank) as agent and matures on June 25, 2004. See "Available Liquidity" below for
more information on the DIP Facility.

ACCOUNTING IMPACT
The Corporation is required to follow AICPA Statement of Position 90-7 ("SOP
90-7"), "Financial Reporting by Entities in Reorganization under the Bankruptcy
Code." Pursuant to SOP 90-7, the Corporation's pre-petition liabilities that are
subject to compromise are reported separately on the consolidated balance sheet.
Virtually all of the Corporation's pre-petition debt is currently in default and
was recorded at face value and classified within liabilities subject to
compromise. U.S. Gypsum's asbestos liability also is classified within
liabilities subject to compromise. See Part I, Item 1. Note 2. Voluntary
Reorganization Under Chapter 11, which includes information related to financial
statement presentation, the debtor-in-possession statements and detail of the
liabilities subject to compromise and chapter 11 reorganization expenses.

                                      -44-






CONSOLIDATED RESULTS

NET SALES
Net sales in the first quarter of 2003 were $862 million, up 4% from $829
million in the first quarter of 2002. Net sales for North American Gypsum and
Building Products Distribution rose 3% and 7%, respectively, while net sales for
Worldwide Ceilings were down slightly.

COST OF PRODUCTS SOLD
Cost of products sold in the first quarter of 2003 was $745 million, up 7% from
$697 million a year ago. A key factor for this increase was higher energy costs.

SELLING AND ADMINISTRATIVE EXPENSES
Selling and administrative expenses decreased 2% versus the first quarter of
2002. As a percent of net sales, selling and administrative expenses were 9.3%
in the first quarter of 2003, down from 9.9% in the comparable 2002 period.

CHAPTER 11 REORGANIZATION EXPENSES
In connection with the Filing, the Corporation recorded chapter 11
reorganization expenses of $2 million in the first quarter of 2003 and 2002. For
both periods, these expenses consisted of legal and financial advisory fees of
$4 million, partially offset by bankruptcy-related interest income of $2
million.

OPERATING PROFIT
Operating profit in the first quarter of 2003 was $35 million, down 27% from $48
million in the first quarter of 2002.

INTEREST EXPENSE
Interest expense of $1 million was recorded in the first quarter of 2003 and
2002. Under SOP 90-7, virtually all of the Corporation's outstanding debt is
classified as liabilities subject to compromise, and interest expense on this
debt has not been accrued or recorded since the Petition Date. Contractual
interest expense not accrued or recorded on pre-petition debt totaled $18
million in the first quarter of 2003 and 2002.

INTEREST INCOME
Interest income of $1 million was recorded in the first quarter of 2003 and
2002. These amounts represent interest earned on cash held by non-debtor
subsidiaries.

INCOME TAXES
Income tax expense amounted to $13 million and $21 million in the first quarter
of 2003 and 2002, respectively. The effective tax rates were 38.5% and 44.4% for
the respective periods. The decrease in the effective tax rate was primarily due
to the benefit of a tax rate change applicable to one of the Corporation's
foreign subsidiaries.

CUMULATIVE EFFECT OF ACCOUNTING CHANGES
On January 1, 2003, the Corporation adopted Statement of Financial Accounting

                                      -45-





Standards ("SFAS") No. 143, "Accounting for Asset Retirement Obligations." This
standard requires the recording of the fair value of a liability for an asset
retirement obligation in the period in which it is incurred. The Corporation's
asset retirement obligations include reclamation requirements as regulated by
government authorities related principally to assets such as the Corporation's
mines, quarries, landfills, ponds and wells. The impact of adopting SFAS No. 143
was an increase in the Corporation's assets and liabilities of $14 million and
$30 million, respectively. An after-tax charge of $16 million ($27 million
pretax) was reflected on the consolidated statement of earnings as a cumulative
effect of a change in accounting principle as of January 1, 2003.

On January 1, 2002, USG Corporation adopted SFAS No. 142, "Goodwill and Other
Intangible Assets." In accordance with the provisions of SFAS No. 142, the
Corporation determined that goodwill for its North American Gypsum segment was
impaired and recorded a noncash, nontaxable impairment charge of $96 million.
This charge, which includes a $6 million deferred currency translation
write-off, is reflected on the Corporation's consolidated statement of earnings
as a cumulative effect of a change in accounting principle as of January 1,
2002.

NET EARNINGS
Net earnings in the first quarter of 2003 were $6 million, or $0.13 per share.
In the first quarter of 2002, a net loss of $70 million, or $1.62 per share, was
recorded.






                                      -46-







CORE BUSINESS RESULTS




(dollars in millions)                               Net Sales                      Operating Profit
- -------------------------------------------------------------------------------------------------------------
                                                                                     
Three Months Ended March 31,                 2003              2002             2003              2002
- -------------------------------------------------------------------------------------------------------------

NORTH AMERICAN GYPSUM:
U.S. Gypsum Company                     $     496         $     483        $      30         $      46
CGC Inc. (gypsum)                              57                50                5                 6
Other subsidiaries*                            28                30                3                 6
Eliminations                                 (39)              (38)                -                 -
- -------------------------------------------------------------------------------------------------------------
Total                                         542               525               38                58
- -------------------------------------------------------------------------------------------------------------
WORLDWIDE CEILINGS:
USG Interiors, Inc.                           110               111                6                 7
USG International                              40                42                1               (3)
CGC Inc. (ceilings)                            10                10                1                 1
Eliminations                                 (13)              (15)                -                 -
- -------------------------------------------------------------------------------------------------------------
Total                                         147               148                8                 5
- -------------------------------------------------------------------------------------------------------------
BUILDING PRODUCTS DISTRIBUTION:
L&W Supply Corporation                        295               275                8                 7
- -------------------------------------------------------------------------------------------------------------
Corporate                                       -                 -             (18)              (20)
Chapter 11 reorganization expenses              -                 -              (2)               (2)
Eliminations                                (122)             (119)               1                 -
- -------------------------------------------------------------------------------------------------------------
Total USG Corporation                         862               829               35                48
=============================================================================================================




*Includes USG Mexico, S.A. de C.V., a building products business in Mexico,
Gypsum Transportation Limited, a shipping company in Bermuda, and USG Canadian
Mining Ltd., a mining operation in Nova Scotia.


NORTH AMERICAN GYPSUM
Net sales of $542 million increased 3% from the first quarter of 2002, while
operating profit of $38 million was down 34%.

Net sales for U.S. Gypsum increased 3% primarily reflecting higher selling
prices for SHEETROCK brand gypsum wallboard and record first quarter shipments
of SHEETROCK brand joint compounds and DUROCK brand cement board. U.S. Gypsum's
nationwide average realized price for wallboard was $97.13 per thousand square
feet in the first quarter of 2003. This price was up 1% from $95.84 in the first
quarter of 2002, but down 6% from $102.98 in the fourth quarter of 2002. Selling
prices were down from the fourth quarter of 2002 primarily reflecting lower
demand due to normal seasonal factors and harsher-than-usual winter weather in
certain parts of the country.

U.S. Gypsum sold 2.51 billion square feet of SHEETROCK brand gypsum wallboard
during the first quarter of 2003, a 3% decrease from the strong level of 2.59
billion square feet in the first quarter of 2002. U.S. Gypsum's wallboard plants
operated at 89% of capacity in the first quarter of 2003 versus 95% for the same
period in 2002. Industry shipments of gypsum wallboard were down approximately
2% from the first quarter of 2002.

                                      -47-







First quarter 2003 operating profit for U.S. Gypsum was down 35% from the first
quarter of 2002. This decline primarily reflected higher manufacturing costs for
SHEETROCK brand gypsum wallboard due to higher energy and wastepaper costs. The
increase in energy costs related to wallboard manufacturing accounted for a $12
million increase to cost of products sold.

The gypsum business of Canada-based CGC Inc. reported a 14% increase in first
quarter net sales as compared with the first quarter of 2002 primarily due to
increased volume (up 5%) and selling prices (up 6%) for SHEETROCK brand gypsum
wallboard. However, operating profit fell 17% primarily due to higher energy
costs.


WORLDWIDE CEILINGS
Net sales decreased $1 million to $147 million, while operating profit increased
$3 million to $8 million as compared with the first quarter of 2002.

USG Interiors, Inc., the Corporation's domestic ceilings business, reported
slightly lower net sales primarily due to lower volume for its ceiling tile and
grid product lines. Shipments are down in 2003 as the level of commercial
construction, the primary market for USG Interiors' products, continues to be
weak. Operating profit for USG Interiors decreased to $6 million from $7 million
a year ago reflecting the lower volume and increased manufacturing costs,
partially offset by higher selling prices for ceiling tile and grid.

Net sales for USG International were down versus the first quarter of 2002.
However, operating profit of $1 million was reported for the first quarter of
2003 compared with an operating loss of $3 million in the first quarter of 2002.
Profitability for USG International improved following the shutdown of the
Aubange, Belgium, ceiling tile plant in December 2002 and other downsizing
activities.

Net sales and operating profit for the ceilings division of CGC Inc. were
unchanged from the first quarter of 2002.


BUILDING PRODUCTS DISTRIBUTION

L&W Supply Corporation, the leading specialty building products distribution
business in the United States, reported net sales of $295 million and operating
profit of $8 million, representing increases of 7% and 14%, respectively, from
the first quarter of 2002. These results primarily reflected increased sales and
profit for L&W Supply's complementary building products, primarily drywall
metal, joint treatment, ceiling products and roofing. Also, sales and profit for
gypsum wallboard were up due to increased shipments (up 4%). Slightly higher
unit costs for gypsum wallboard were partially offset by slightly higher selling
prices. L&W Supply currently operates 181 locations in the United States
distributing a variety of gypsum, ceilings and related building materials.

                                      -48-







MARKET CONDITIONS AND OUTLOOK

The outlook for the Corporation's markets in 2003 is mixed. Demand for gypsum
wallboard is expected to remain strong primarily due to the continued high
demand for new homes. Housing starts are expected to exceed 1.6 million units in
2003. Despite the strong demand, the gypsum wallboard industry continues to
experience a large amount of excess capacity. Nonresidential construction, the
principal market for the Corporation's ceiling products and a major market for
its distribution business, is expected to remain weak. In addition, the
Corporation, like many other companies, faces cost pressures in areas such as
energy and raw material costs, employee and retiree medical expenses and
insurance premiums. In this environment, the Corporation is focusing its
management attention and investments on improving customer service,
manufacturing costs and operating efficiencies, as well as selectively investing
to grow its businesses. In addition, the Corporation will diligently continue
its attempt to resolve the chapter 11 proceedings, consistent with the goal of
achieving a fair, comprehensive and final resolution to its asbestos liability.


LIQUIDITY AND CAPITAL RESOURCES

WORKING CAPITAL
Working capital (current assets less current liabilities) as of March 31, 2003,
amounted to $1,002 million, and the ratio of current assets to current
liabilities was 3.42-to-1. As of December 31, 2002, working capital amounted to
$955 million, and the ratio of current assets to current liabilities was
3.18-to-1.

Cash, cash equivalents and marketable securities as of March 31, 2003, amounted
to $768 million, compared with $830 million as of December 31, 2002. During the
first quarter of 2003, net cash flows used in operating activities totaled $45
million largely reflecting cash used to fund seasonal working capital needs and
payments associated with employee benefit and compensation plans. Net cash flows
used in investing activities totaled $12 million and consisted of capital
spending of $17 million, offset by sales and maturities of marketable
securities, net of purchases, of $5 million. Because of the Filing, there were
no financing activities during the first three months of 2003.

As of March 31, 2003, $129 million was invested in long-term marketable
securities and $47 million in short-term marketable securities. The
Corporation's marketable securities are classified as available-for-sale
securities and reported at fair market value with unrealized gains and losses
excluded from earnings and reported in accumulated other comprehensive loss on
the consolidated balance sheet.

Receivables increased to $355 million as of March 31, 2003, from $284 million as
of December 31, 2002, primarily reflecting a 13% increase in net sales for the
month of March 2003 as compared with December 2002. Inventories and payables
also

                                      -49-






were up from December 31, 2002, primarily due to the increased level of
business. Inventories increased to $286 million from $270 million, and accounts
payable increased to $199 million from $170 million.

DEBT
As of March 31, 2002, total debt amounted to $1,007 million, of which $1,005
million was included in liabilities subject to compromise. These amounts were
unchanged from the December 31, 2002, levels.

AVAILABLE LIQUIDITY
As of March 31, 2003, the Corporation, on a consolidated basis, had $768 million
of cash and marketable securities, of which $153 million was held by non-Debtor
subsidiaries. The Corporation also had a $100 million DIP Facility available to
supplement liquidity and fund operations during the reorganization process.
Borrowing availability under the DIP Facility is based primarily on accounts
receivable and inventory levels and, to a lesser extent, property, plant and
equipment. Given these levels, as of March 31, 2003, the Corporation had the
capacity to borrow up to $100 million. There were no outstanding borrowings
under the DIP Facility as of March 31, 2003. However, $16 million of standby
letters of credit were outstanding, leaving $84 million of unused borrowing
capacity available as of March 31, 2003.

CAPITAL EXPENDITURES
Capital spending amounted to $17 million in the first quarter of 2003 compared
with $15 million in the corresponding 2002 period. As of March 31, 2003,
remaining capital expenditure commitments for the replacement, modernization and
expansion of operations amounted to $51 million, compared with $56 million as of
December 31, 2002.

During the bankruptcy proceeding, the Corporation expects to have limited
ability to access capital other than its own cash flows to fund potential future
growth opportunities such as new products, acquisitions and joint ventures. In
addition, one of the terms of the DIP Facility limits capital spending to a
total of $175 million per year. Within such constraints, the Corporation expects
to be able to maintain a program of capital spending aimed at maintaining and
enhancing its businesses.

EXIT ACTIVITIES
2002 DOWNSIZING PLAN: In the fourth quarter of 2002, the Corporation recorded a
nontaxable charge of $11 million related to the shutdown of the Aubange,
Belgium, ceiling tile plant and other downsizing activities in Europe to address
the continuing weakness of the commercial ceilings market in Europe. The charge
was included in cost of products sold and reflected severance of $6 million
related to a workforce reduction of over 50 positions (salaried and hourly),
equipment writedowns of $3 million and other reserves of $2 million. The other
reserves primarily related to lease cancellations, inventories and receivables.


                                      -50-






As of March 31, 2003, 49 employees were terminated. The Aubange, Belgium, plant
ceased operations in December 2002. The reserve for the 2002 downsizing plan was
included in accrued expenses on the consolidated balance sheets. Charges against
the reserve included the $3 million write-off of equipment in 2002 and payments
totaling $3 million in the first quarter of 2003. All payments associated with
the 2002 downsizing plan are being funded with cash from operations.

2001 RESTRUCTURING PLAN: In the fourth quarter of 2001, the Corporation recorded
a charge of $12 million pretax ($10 million after-tax) related to a
restructuring plan that included the shutdown of a gypsum wallboard plant in
Fremont, Calif., a drywall steel plant in Prestice, Czech Republic, a ceiling
tile plant in San Juan Ixhuatepec, Mexico, a ceiling tile manufacturing line in
Greenville, Miss., and other restructuring activities. Included in the $12
million pretax charge was $8 million for severance related to a workforce
reduction of more than 350 positions (primarily hourly positions), $2 million
for the write-off of property, plant and equipment, and $2 million for line
shutdown and removal and contract cancellations. The 2001 restructuring was
intended to allow the Corporation to optimize its manufacturing operations.

As of March 31, 2003, 348 employees were terminated, and 26 open positions were
eliminated, and the ceiling tile manufacturing line at Greenville, Miss., and
the plants in San Juan Ixhuatepec, Mexico, and Prestice, Czech Republic, were
shut down. The Fremont, Calif., plant ceased production in the second quarter of
2002. Annual savings from the full implementation of the 2001 restructuring
initiatives are estimated at $11 million. The reserve for the 2001 restructuring
plan was included in accrued expenses on the consolidated balance sheets.
Charges against the reserve in 2001 included the $2 million write-off of
property, plant and equipment and payments totaling $2 million. An additional $3
million of payments were made and charged against the reserve in 2002. The
remaining $5 million of payments were made and charged against the reserve in
the first quarter of 2003. All payments associated with the 2001 restructuring
plan were funded with cash from operations.

See Part I, Item 1. Note 3. Exit Activities for additional information related
to payments and reserve balances.


OTHER MATTERS

LEGAL CONTINGENCIES
As a result of the Filing, all pending asbestos lawsuits against U.S. Gypsum and
other subsidiaries are stayed, and no party may take any action to pursue or
collect on such asbestos claims absent specific authorization of the Bankruptcy
Court. See Part I, Item 1. Note 2. Voluntary Reorganization Under Chapter 11 and
Note 12. Litigation for recent developments in the Corporation's reorganization
proceedings. See Part I. Item 1. Note 12. Litigation for additional information
on asbestos litigation.

                                      -51-






The Corporation and certain of its subsidiaries have been notified by state and
federal environmental protection agencies of possible involvement as one of
numerous "potentially responsible parties" in a number of so-called "Superfund"
sites in the United States. The Corporation believes that neither these matters
nor any other known governmental proceeding regarding environmental matters will
have a material adverse effect upon its results of operations or financial
position. See Part I, Item 1. Note 12. Litigation for additional information on
environmental litigation.


FORWARD-LOOKING STATEMENTS

This report contains forward-looking statements related to management's
expectations about future conditions. The effects of the Filing and the conduct,
outcome and costs of the Chapter 11 Cases, as well as the ultimate costs
associated with the Corporation's asbestos litigation, may differ from
management's expectations. Actual business or other conditions may also differ
significantly from management's expectations and accordingly affect the
Corporation's sales and profitability or other results. Actual results may
differ due to various other factors, including economic conditions such as the
levels of construction activity, interest rates, currency exchange rates and
consumer confidence; competitive conditions such as price and product
competition; shortages in raw materials; increases in raw material and energy
costs; and the unpredictable effects of the global war on terrorism upon
domestic and international economies and financial markets. The Corporation
assumes no obligation to update any forward-looking information contained in
this report.


ITEM 4. CONTROLS AND PROCEDURES

(a)   Evaluation of disclosure controls and procedures.
      The Corporation's chief executive officer and chief financial officer,
      after evaluating the effectiveness of the Corporation's "disclosure
      controls and procedures" (as defined in the Rules 13a-14(c) and 15-d-14(c)
      of the Securities Exchange Act of 1934) as of a date (the "Evaluation
      Date") within 90 days before the filing date of this quarterly report,
      have concluded that as of the Evaluation Date, the Corporation's
      disclosure controls and procedures were adequate and designed to ensure
      that material information relating to the Corporation and its consolidated
      subsidiaries would be made known to them by others within those entities.

(b)   Changes in internal controls.
      There were no significant changes in the Corporation's internal controls
      or in other factors that could significantly affect the Corporation's
      internal controls subsequent to the Evaluation Date.


                                      -52-






                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Stockholders and Board of Directors of USG Corporation:

We have reviewed the accompanying consolidated balance sheet of USG Corporation
and subsidiaries as of March 31, 2003 and the related consolidated statements of
earnings and cash flows for the three month periods ended March 31, 2003 and
2002. These interim financial statements are the responsibility of the
Corporation's management.

We conducted our reviews in accordance with standards established by the
American Institute of Certified Public Accountants. A review of interim
financial information consists principally of applying analytical procedures and
making inquiries of persons responsible for financial and accounting matters. It
is substantially less in scope than an audit conducted in accordance with
auditing standards generally accepted in the United States of America, the
objective of which is the expression of an opinion regarding the financial
statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our reviews, we are not aware of any material modifications that should
be made to the accompanying interim financial statements for them to be in
conformity with accounting principles generally accepted in the United States of
America.

We have previously audited, in accordance with auditing standards generally
accepted in the United States of America, the consolidated balance sheet of USG
Corporation and subsidiaries as of December 31, 2002, and the related
consolidated statements of income, stockholders' equity, and cash flows for the
year then ended (not presented herein); and in our report dated February 3, 2003
(February 19, 2003 as to paragraphs 13, 14 and 15 of Note 18), we expressed an
unqualified opinion on those consolidated financial statements and included
explanatory paragraphs concerning (i) the Corporation's Chapter 11 bankruptcy
filing, (ii) matters that raised substantial doubt about the Corporation's
ability to continue as a going concern, and (iii) transitional disclosures
related to the change in accounting for goodwill. In our opinion, the
information set forth in the accompanying condensed consolidated balance sheet
as of December 31, 2002 is fairly stated, in all material respects, in relation
to the consolidated balance sheet from which it has been derived.

As discussed in Note 2 to the consolidated financial statements, USG Corporation
and certain subsidiaries voluntarily filed for Chapter 11 bankruptcy protection
on June 25, 2001. The accompanying consolidated financial statements do not
purport to reflect or provide for the consequences of the bankruptcy
proceedings. In particular, such financial statements do not purport to show (a)
as to assets, their realizable value on a liquidation basis or their
availability to satisfy liabilities; (b) as to pre-petition liabilities, the
amounts that may be allowed for claims or contingencies, or the status and
priority thereof; (c) as to

                                      -53-






stockholder accounts, the effect of any changes that may be made in the
capitalization of the Corporation; or (d) as to operations, the effect of any
changes that may be made in its business.

The accompanying consolidated financial statements have been prepared assuming
that the Corporation will continue as a going concern. As discussed in Notes 2
and 12 to the consolidated financial statements, there is significant
uncertainty as to the resolution of the Corporation's asbestos litigation,
which, among other things, may lead to possible changes in the composition of
the Corporation's business portfolio, as well as changes in the ownership of the
Corporation. This uncertainty raises substantial doubt about the Corporation's
ability to continue as a going concern. Management's plans in regard to these
matters are also described in Notes 2 and 12 to the financial statements. The
financial statements do not include any adjustments that might result from the
outcome of this uncertainty.


/s/ DELOITTE & TOUCHE LLP

DELOITTE & TOUCHE LLP

Chicago, Illinois
April 23, 2003












                                      -54-







PART II.   OTHER INFORMATION

ITEM 1.    LEGAL PROCEEDINGS

See Part I, Item 1. Note 12. Litigation for information concerning the asbestos
and related bankruptcy litigation and environmental litigation.




ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

     (a)      Exhibits:

              15.  Letter from Deloitte & Touche LLP regarding unaudited
                   financial information.

              99.  Certifications of USG Corporation's Chief Executive Officer
                   and Chief Financial Officer pursuant to 18 U.S.C. Section
                   1350, as adopted pursuant to Section 906 of the
                   Sarbanes-Oxley Act of 2002.















                                      -55-







                                   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.



                                        USG CORPORATION



                                        By  /s/ William C. Foote
                                            -----------------------------------

                                            William C. Foote,
                                            Chairman, Chief Executive Officer
                                            and President


                                        By  /s/ Richard H. Fleming
                                            -----------------------------------

                                            Richard H. Fleming
                                            Executive Vice President and
                                            Chief Financial Officer,


                                        By  /s/ D. Rick Lowes
                                            -----------------------------------

                                            D. Rick Lowes,
                                            Vice President and Controller,

May 5, 2003






                                      -56-










                       ANNUAL AND QUARTERLY CERTIFICATIONS
            PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002


I, William C. Foote, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of USG Corporation;

2.   Based on my knowledge, this quarterly report does not contain any untrue
     statement of a material fact or omit to state a material fact necessary to
     make the statements made, in light of the circumstances under which such
     statements were made, not misleading with respect to the period covered by
     this quarterly report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this quarterly report, fairly present in all
     material respects the financial condition, results of operations and cash
     flows of USG Corporation as of, and for, the periods presented in this
     quarterly report;

4.   USG Corporation's other certifying officer and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for USG Corporation and we have:

              (a)   designed such disclosure controls and procedures to ensure
                    that material information relating to USG Corporation,
                    including its consolidated subsidiaries, is made known to us
                    by others within those entities, particularly during the
                    period in which this quarterly report is being prepared;

              (b)   evaluated the effectiveness of USG Corporation's disclosure
                    controls and procedures as of a date within 90 days prior to
                    the filing date of this quarterly report (the "Evaluation
                    Date"); and

              (c)  presented in this quarterly report our conclusions about the
                    effectiveness of the disclosure controls and procedures
                    based on our evaluation as of the Evaluation Date;

5.   USG Corporation's other certifying officer and I have disclosed, based on
     our most recent evaluation, to USG Corporation's auditors and the audit
     committee of USG Corporation's board of directors:

              (a)   all significant deficiencies in the design or operation of
                    internal controls which could adversely affect USG
                    Corporation's ability to record, process, summarize and
                    report financial data and have identified for USG
                    Corporation's auditors any material weaknesses in internal
                    controls; and

              (b)   any fraud, whether or not material, that involves management
                    or other employees who have a significant role in USG
                    Corporation's internal controls; and

6.   USG Corporation's other certifying officer and I have indicated in this
     quarterly report whether or not there were significant changes in internal
     controls or in other factors that could significantly affect internal
     controls subsequent to the date of their evaluation, including any
     corrective actions with regard to significant deficiencies and material
     weaknesses.



May 5, 2003                      /s/ William C. Foote
                                 -----------------------------------------------
                                 William C. Foote
                                 Chairman, Chief Executive Officer and President


                                      -57-






                       ANNUAL AND QUARTERLY CERTIFICATIONS
            PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002


I,   Richard H. Fleming, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of USG Corporation;

2.   Based on my knowledge, this quarterly report does not contain any untrue
     statement of a material fact or omit to state a material fact necessary to
     make the statements made, in light of the circumstances under which such
     statements were made, not misleading with respect to the period covered by
     this quarterly report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this quarterly report, fairly present in all
     material respects the financial condition, results of operations and cash
     flows of USG Corporation as of, and for, the periods presented in this
     quarterly report;

4.   USG Corporation's other certifying officer and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-14 and 15d-14) for USG Corporation and we have:

              (a)   designed such disclosure controls and procedures to ensure
                    that material information relating to USG Corporation,
                    including its consolidated subsidiaries, is made known to us
                    by others within those entities, particularly during the
                    period in which this quarterly report is being prepared;

              (b)   evaluated the effectiveness of USG Corporation's disclosure
                    controls and procedures as of a date within 90 days prior to
                    the filing date of this quarterly report (the "Evaluation
                    Date"); and

              (c)   presented in this quarterly report our conclusions about the
                    effectiveness of the disclosure controls and procedures
                    based on our evaluation as of the Evaluation Date;

5.   USG Corporation's other certifying officer and I have disclosed, based on
     our most recent evaluation, to USG Corporation's auditors and the audit
     committee of USG Corporation's board of directors:

              (a)   all significant deficiencies in the design or operation of
                    internal controls which could adversely affect USG
                    Corporation's ability to record, process, summarize and
                    report financial data and have identified for USG
                    Corporation's auditors any material weaknesses in internal
                    controls; and

              (b)   any fraud, whether or not material, that involves management
                    or other employees who have a significant role in USG
                    Corporation's internal controls; and

6.   USG Corporation's other certifying officer and I have indicated in this
     quarterly report whether or not there were significant changes in internal
     controls or in other factors that could significantly affect internal
     controls subsequent to the date of their evaluation, including any
     corrective actions with regard to significant deficiencies and material
     weaknesses.



May 5, 2003                         /s/ Richard H. Fleming
                                    -------------------------------------------
                                    Richard H. Fleming
                                    Executive Vice President and Chief Financial
                                    Officer

                                      -58-