USG CORP
S-1, 1994-03-09
CONCRETE, GYPSUM & PLASTER PRODUCTS
Previous: SCANA CORP, 10-K, 1994-03-09
Next: PUTNAM AMERICAN GOVERNMENT INCOME FUND, 497, 1994-03-09



<PAGE>
   
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 9, 1994
    
   
                                                       REGISTRATION NO. 33-_____
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                           --------------------------

   
                                    FORM S-1
    
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------

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

<TABLE>
<S>                              <C>                              <C>
           DELAWARE                           3275                          36-3329400
(State or other jurisdiction of   (Primary Standard Industrial           (I.R.S. Employer
incorporation or organization)     Classification Code Number)          Identification No.)
</TABLE>

                           125 SOUTH FRANKLIN STREET
                          CHICAGO, ILLINOIS 60606-4678
                                 (312) 606-4000
    (Address, including zip code, and telephone number, including area code,
                  of registrant's principal executive offices)
                           --------------------------

                            ARTHUR G. LEISTEN, ESQ.
                   SENIOR VICE PRESIDENT AND GENERAL COUNSEL
                           125 SOUTH FRANKLIN STREET
                          CHICAGO, ILLINOIS 60606-4678
                                 (312) 606-4000
           (Name, address and telephone number of agent for service)
                           --------------------------

                                   COPIES TO:

<TABLE>
<S>                                      <C>
       FRANCIS J. GERLITS, P.C.                      SETH A. KAPLAN
           Kirkland & Ellis                  Wachtell, Lipton, Rosen & Katz
        200 East Randolph Drive                    51 West 52nd Street
        Chicago, Illinois 60601                 New York, New York 10019
</TABLE>

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

        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
  AS SOON AS PRACTICABLE AFTER THIS REGISTRATION STATEMENT BECOMES EFFECTIVE.

    If  any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to  Rule 415 under the Securities Act  of
1933, check the following box. / /
                           --------------------------

   
                        CALCULATION OF REGISTRATION FEE
    

<TABLE>
<CAPTION>
                                                                                               AMOUNT OF
                                                    PROPOSED MAXIMUM     PROPOSED MAXIMUM      ADDITIONAL
   TITLE OF EACH CLASS OF          AMOUNT TO         OFFERING PRICE          AGGREGATE        REGISTRATION
SECURITIES TO BE REGISTERED   BE REGISTERED(1)(2)     PER SHARE(3)       OFFERING PRICE(3)       FEE(4)
<S>                           <C>                  <C>                  <C>                  <C>
Common Stock, par value
 $0.10 per share............   14,375,000 shares         $29.875           $432,831,250         $149,253
<FN>
(1) Of  the 14,375,000 shares of Common Stock being registered, 9,775,000 shares
    were registered pursuant to  Registration Statement No. 33-51845  originally
    filed  on  January 7,  1994, 1,725,000  shares  were registered  pursuant to
    Amendment No. 1  to such  Registration Statement,  and 2,875,000  additional
    shares are being registered pursuant hereto.
(2) Includes  1,875,000 shares that the Underwriters have the option to purchase
    to cover over-allotments, if any.
(3) Estimated in accordance with Rule 457 solely for the purpose of  calculating
    the  additional registration  fee. The  proposed maximum  offering price per
    share shown in  the table relates  to the 2,875,000  shares of Common  Stock
    being registered pursuant to this Registration Statement. A proposed maximum
    offering  price per share of $29.625 was used for the purpose of calculating
    the registration fee with  respect to the 9,775,000  shares of Common  Stock
    registered  pursuant  to  the  Registration  Statement  originally  filed on
    January 7, 1994. A proposed maximum  offering price per share of $33.25  was
    used for the purpose of calculating the registration fee with respect to the
    1,725,000  shares of Common Stock registered  pursuant to Amendment No. 1 to
    such original Registration Statement.
(4) Of the $149,253 registration  fee, $99,857 was paid  in connection with  the
    Registration  Statement originally filed  on January 7,  1994 and $19,778 of
    the registration fee  was paid in  connection with Amendment  No. 1 to  such
    original  Registration Statement.  Accordingly, $29,618  of the registration
    fee is being paid in connection herewith.
</TABLE>

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

   
    Pursuant to  Rule  429, the  Prospectus  contained herein  also  relates  to
Registration   Statement  No.  33-51845   and  this  constitutes  Post-Effective
Amendment No. 1 to such Registration Statement.
    

    THE REGISTRANT HEREBY  AMENDS THIS  REGISTRATION STATEMENT ON  SUCH DATE  OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE  A  FURTHER  AMENDMENT  WHICH SPECIFICALLY  STATES  THAT  THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE  IN ACCORDANCE WITH SECTION 8(A)  OF
THE  SECURITIES ACT  OF 1933 OR  UNTIL THIS REGISTRATION  STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION  8(A),
MAY DETERMINE.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                             CROSS REFERENCE SHEET
                   PURSUANT TO ITEM 501(B) OF REGULATION S-K
  SHOWING LOCATION IN PROSPECTUS OF INFORMATION REQUIRED BY ITEMS OF PART I OF
                                   FORM S-1.

<TABLE>
<CAPTION>
REGISTRATION STATEMENT
ITEM NUMBER AND CAPTION                                                   CAPTION OR LOCATION IN PROSPECTUS
- -------------------------------------------------------------  --------------------------------------------------------
<C>        <S>                                                 <C>
       1.  Forepart of the Registration Statement and Outside
            Front Cover Page of Prospectus...................  Outside Front Cover Page of Prospectus
       2.  Inside Front and Outside Back Cover Pages of
            Prospectus.......................................  Inside Front Cover Page of Prospectus; Outside Back
                                                                Cover Page of Prospectus; Additional Information
       3.  Summary Information, Risk Factors and Ratio of
            Earnings to Fixed Charges........................  Prospectus Summary; Risk Factors
       4.  Use of Proceeds...................................  Purpose of the Offering and Use of Proceeds;
                                                                Management's Discussion and Analysis of Financial
                                                                Condition and Results of Operations
       5.  Determination of Offering Price...................  Not applicable
       6.  Dilution..........................................  Dilution
       7.  Selling Security Holders..........................  Ownership of Common Stock
       8.  Plan of Distribution..............................  Outside Front Cover Page of Prospectus; Underwriting
       9.  Description of Securities to Be Registered........  Prospectus Summary; Dividend Policy; Capitalization;
                                                                Description of Capital Stock
      10.  Interests of Named Experts and Counsel............  Legal Matters
      11.  Information with Respect to the Registrant........  Outside Front Cover Page of Prospectus; Prospectus
                                                                Summary; Risk Factors; Dividend Policy; Purpose of the
                                                                Offering and Use of Proceeds; Capitalization; Dilution;
                                                                Selected Consolidated Financial Data; Management's
                                                                Discussion and Analysis of Financial Condition and
                                                                Results of Operations; Business; Management; Certain
                                                                Relationships and Related Transactions; Description of
                                                                Capital Stock; Legal Matters; Experts; Financial
                                                                Statements
      12.  Disclosure of Commission Position on
            Indemnification for Securities Act Liabilities...  Not Applicable
</TABLE>

<PAGE>
                                EXPLANATORY NOTE

    This Registration Statement contains two forms of prospectus: one (the "U.S.
Prospectus")  to be used in connection with an offering in the United States and
Canada and one (the "International Prospectus") to be used in connection with  a
concurrent international offering outside the United States and Canada. The U.S.
Prospectus  and  the International  Prospectus  are identical  except  that they
contain different front and back cover  pages and different descriptions of  the
plan  of  distribution  (contained  under  the  caption  "Underwriting"  in both
prospectuses). The form of U.S. Prospectus is included herein and is followed by
those pages to be used in the International Prospectus which differ from or  are
in  addition  to  those  in the  U.S.  Prospectus.  Each of  the  pages  for the
International  Prospectus  included  herein  is  labelled  "Alternate  Page  for
International Prospectus."
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS BE  ACCEPTED  PRIOR  TO  THE  TIME  THE  REGISTRATION  STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL  OR  A
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THE SECURITIES IN
ANY STATE IN WHICH SUCH OFFER, SOLICITATION  OR SALE WOULD BE UNLAWFUL PRIOR  TO
REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>

<TABLE>
<S>                 <C>                     <C>
PROSPECTUS          SUBJECT TO COMPLETION               [LOGO]
12,500,000 SHARES       MARCH 9, 1994
USG CORPORATION
COMMON STOCK
($.10 PAR VALUE)
</TABLE>

   
Of  the 12,500,000  shares of common  stock ("Common Stock")  of USG Corporation
("USG" or the "Corporation") being offered,  7,000,000 shares are being sold  by
the  Corporation and 5,500,000  shares are being sold  by Water Street Corporate
Recovery Fund  I,  L.P.  (the  "Selling Stockholder"  or  "Water  Street").  See
"Ownership  of  Common Stock  -- Selling  Stockholder  and its  Affiliates." The
Corporation will not receive any of the  proceeds from the sale of Common  Stock
by the Selling Stockholder.
    

   
Of  the 12,500,000 shares  of Common Stock being  offered, 10,625,000 shares are
being offered hereby in the United  States and Canada (the "U.S. Offering")  and
1,875,000  shares  are  being  offered in  a  concurrent  international offering
outside  the  United  States  and  Canada  (the  "International  Offering"  and,
collectively  with  the U.S.  Offering,  the "Offering"),  subject  to transfers
between  the  U.S.  Underwriters  (as  defined  herein)  and  the  International
Underwriters  (as defined herein). The offering price and underwriting discounts
for the U.S.  Offering and  the International  Offering will  be identical.  The
closing   of  the  U.S.  Offering  is   conditioned  upon  the  closing  of  the
International Offering,  and  the  closing  of  the  International  Offering  is
conditioned upon the closing of the U.S. Offering. See "Underwriting."
    

   
The Common Stock is traded on the New York Stock Exchange (the "NYSE") under the
symbol "USG." On March 8, 1994, the last reported sale price of the Common Stock
as  reported on the NYSE Composite Tape  was $29.875 per share. See "Price Range
of Common Stock." Potential investors  are encouraged to obtain current  trading
price information.
    

PROSPECTIVE  INVESTORS SHOULD CONSIDER CAREFULLY THE MATTERS DISCUSSED UNDER THE
CAPTION "RISK FACTORS."

THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  AND
EXCHANGE  COMMISSION OR ANY  STATE SECURITIES COMMISSION  NOR HAS THE SECURITIES
AND EXCHANGE  COMMISSION OR  ANY  STATE SECURITIES  COMMISSION PASSED  UPON  THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

<TABLE>
<S>                          <C>             <C>             <C>             <C>
                                                             PROCEEDS TO     PROCEEDS TO
                             PRICE TO        UNDERWRITING    CORPORATION     SELLING
                             PUBLIC          DISCOUNT        (1)             STOCKHOLDER
Per Share..................  $29.875         $1.344          $28.531         $28.531
Total (2)..................  $373,437,500    $16,800,000     $199,717,000    $156,920,500
<FN>
(1) Before  deduction of  expenses payable by  the Corporation,  estimated to be
    $1,350,000.
(2) The Corporation and the  Selling Stockholder have each  granted to the  U.S.
    Underwriters  a  30-day  option  to  purchase  up  to  765,000  and  828,750
    additional shares of  Common Stock,  respectively, at the  Price to  Public,
    less  the Underwriting  Discount, solely  to cover  over-allotments, if any.
    Additionally, the Corporation and the Selling Stockholder have each  granted
    to  the International Underwriters a 30-day option to purchase up to 135,000
    and 146,250 additional shares of Common Stock, respectively, at the Price to
    Public, less the Underwriting Discount, solely to cover over-allotments,  if
    any.  If the Underwriters exercise such options  in full, the total Price to
    Public, Underwriting  Discount,  Proceeds  to Corporation  and  Proceeds  to
    Selling  Stockholder  will  be  429,453,125,  19,320,000,  225,394,900,  and
    184,738,225, respectively. See "Underwriting."
</TABLE>

   
The shares of Common Stock are offered subject to receipt and acceptance by  the
U.S.  Underwriters, to prior sale and to  the U.S. Underwriters' right to reject
any order  in whole  or in  part and  to withdraw,  cancel or  modify the  offer
without  notice. It is expected that delivery of  the shares will be made at the
office of Salomon Brothers Inc, Seven World Trade Center, New York, New York, or
through the facilities of  The Depository Trust Company,  on or about March  16,
1994.
    

SALOMON BROTHERS INC                                         LAZARD FRERES & CO.
                           SMITH BARNEY SHEARSON INC.

   
The date of this Prospectus is March 9, 1994.
    
<PAGE>
                                   [PICTURES]

    IN  CONNECTION WITH THE OFFERING, THE  UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE COMMON STOCK AT
A LEVEL  ABOVE THAT  WHICH MIGHT  OTHERWISE  PREVAIL IN  THE OPEN  MARKET.  SUCH
STABILIZATION, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.

                                       2
<PAGE>
                               PROSPECTUS SUMMARY

    THE  FOLLOWING SUMMARY  IS QUALIFIED  IN ITS  ENTIRETY BY  THE MORE DETAILED
INFORMATION AND  FINANCIAL STATEMENTS  (INCLUDING THE  NOTES THERETO)  CONTAINED
ELSEWHERE  IN THIS PROSPECTUS. UNLESS THE CONTEXT OTHERWISE REQUIRES, REFERENCES
TO "USG" AND THE "CORPORATION" MEAN USG CORPORATION, A DELAWARE CORPORATION, AND
ITS SUBSIDIARIES. UNLESS OTHERWISE SPECIFIED,  THE INFORMATION PROVIDED IN  THIS
PROSPECTUS  ASSUMES NO EXERCISE OF THE UNDERWRITERS' OVER-ALLOTMENT OPTIONS. SEE
"UNDERWRITING."

                                    OVERVIEW

    Through  its  subsidiaries,  USG  is  a  leading  manufacturer  of  building
materials  in North America which  produces a wide range  of products for use in
residential and nonresidential construction, repair  and remodeling, as well  as
products  used  in certain  industrial processes.  United States  Gypsum Company
("U.S. Gypsum") is the largest producer of gypsum wallboard in the United States
and accounted for  approximately one-third  of total  domestic gypsum  wallboard
sales  in 1993. USG Interiors,  Inc. ("USG Interiors") is  a leading supplier of
interior  ceiling,  wall  and  floor  products  used  primarily  in   commercial
applications.  In 1993, USG  Interiors was the largest  producer of ceiling grid
and the second largest producer of ceiling tile in the United States. L&W Supply
Corporation ("L&W Supply") is the  largest distributor of wallboard and  related
products  in the United States and in 1993 distributed approximately 22% of U.S.
Gypsum's wallboard production. In addition to its United States operations,  the
Corporation's   76%  owned  subsidiary,   CGC  Inc.  ("CGC"),   is  the  largest
manufacturer of  gypsum products  in eastern  Canada and  the Corporation's  USG
International  unit ("USG  International") supplies interior  systems and gypsum
wallboard products in Europe, the Pacific  and Latin America. In the year  ended
December 31, 1993, the Corporation had net sales of $1,916 million and generated
EBITDA of $218 million.

    On  May 6, 1993, the Corporation  completed a comprehensive restructuring of
its debt through the  implementation of a  "prepackaged" plan of  reorganization
under  the federal bankruptcy laws. This restructuring significantly reduced the
Corporation's overall interest and debt  repayment obligations and extended  the
maturities   of  a  substantial   portion  of  its   remaining  debt.  See  "The
Restructuring" and "Risk Factors."

                                    BUSINESS

    The Corporation participates  in three industry  segments: Gypsum  Products,
Interior Systems and Building Products Distribution.

    GYPSUM  PRODUCTS.   U.S.  Gypsum  has vertically  integrated  operations for
extracting, processing,  producing and  marketing gypsum  and related  products,
such  as  "SHEETROCK"  brand  wallboard, joint  compound  and  industrial gypsum
cements and fillers. U.S. Gypsum also manufactures cement board, which it  sells
under  the "DUROCK" brand name.  Due to the vertical  integration of its key raw
materials (gypsum and paper), its technical  expertise and the proximity of  its
plants to major metropolitan areas, U.S. Gypsum believes that its delivered cost
for  gypsum wallboard is generally  lower than its competitors'.  As a result of
efficiency  improvements  and  cost   reduction  efforts,  U.S.  Gypsum's   unit
manufacturing  cost for gypsum  wallboard in 1993  (measured in nominal dollars)
was lower than  its unit  manufacturing cost  a decade  ago. In  the year  ended
December  31, 1993, the Gypsum Products segment  had net sales of $1,165 million
and generated EBITDA of $179 million before allocation of corporate expenses.

    INTERIOR SYSTEMS.  The Interior Systems segment manufactures and markets  an
integrated  line of products  used primarily for  commercial interiors. Products
include ceiling grid and  ceiling tile, access floor  systems, wall systems  and
mineral  wool  insulation and  soundproofing  products. In  1993,  USG Interiors
accounted for over one-half and approximately one-third of total domestic  sales
of  ceiling grid and ceiling tile, respectively.  CGC is the largest producer of
ceiling grid and the second largest marketer

                                       3
<PAGE>
of ceiling tile in Canada. USG International's net sales in Europe, the  Pacific
and  Latin  America  accounted for  approximately  27% of  the  Interior Systems
segment's net sales in 1993. In the  year ended December 31, 1993, the  Interior
Systems  segment  had net  sales of  $550  million and  generated EBITDA  of $57
million before allocation of corporate expenses.

    BUILDING PRODUCTS DISTRIBUTION.  The Building Products Distribution  segment
is  conducted  through L&W  Supply, which  distributed  approximately 9%  of all
gypsum wallboard in  the United States  in 1993. L&W  Supply's 131  distribution
centers  located  in  34 states  offer  a  wide range  of  building  products to
construction contractors, including wallboard,  drywall metal, ceiling tile  and
ceiling  grid. L&W Supply is  able to provide less  than truckload quantities of
materials directly to job sites and place  the materials in areas where work  is
in  progress,  thereby  reducing contractors'  material  handling  and inventory
requirements. In  the  year  ended  December 31,  1993,  the  Building  Products
Distribution  segment had net sales  of $528 million and  generated EBITDA of $7
million before allocation of corporate expenses.

    U.S. INDUSTRY TRENDS.  Demand for  the Corporation's products in the  United
States  is largely influenced by the  three major components of the construction
industry: new  residential construction  (single  and multi-family  homes),  new
non-residential  construction (offices, schools,  stores and other institutions)
and repair  and  remodel  activity.  In  recent  years,  structural  changes  in
residential construction activity combined with growth in the repair and remodel
component  have partially mitigated the impact of the cyclical demand in overall
new construction  components. New  residential construction  has shifted  toward
more  single family housing, which typically requires twice as much wallboard as
a multi-family home, and  the average single family  home size has increased  by
approximately  15% since 1986.  In addition, the repair  and remodel segment has
become an increasing percentage of  the Corporation's business. The  Corporation
estimates  that the  repair and remodel  segment comprised  approximately 36% of
1993 industry-wide  demand  for  gypsum  wallboard  and  approximately  half  of
industry-wide demand for interior systems products. Largely as a result of these
factors,  United States industry shipments of gypsum wallboard were 21.6 billion
square feet in 1993, as compared to 21.3 billion in 1986, despite an approximate
28% decline in the number  of housing starts from 1.8  million units in 1986  to
1.3 million units in 1993.

    The  Corporation  estimates that  industry  capacity utilization  for gypsum
wallboard has increased  from an  average of  approximately 83%  during 1992  to
approximately  93%  during  the fourth  quarter  of 1993.  USG's  average gypsum
wallboard price increased  to $82.46  per thousand  square feet  ("MSF") in  the
three  months ended December 31, 1993, as compared  to its 14 year low of $67.77
reached in the three months ended March 31, 1992.

    There can be  no assurance,  however, that  recent increases  in demand  and
pricing in the gypsum wallboard industry will continue or that current levels of
demand  and  pricing  can  be  sustained in  the  future.  In  this  regard, the
Corporation's business is cyclical in nature and sensitive to changes in general
economic conditions, including changes in interest rates. See "Risk Factors."

    The Corporation's  principal  executive offices  are  located at  125  South
Franklin  Street, Chicago, Illinois 60606. Its  telephone number at that address
is 312-606-4000.

                               THE RESTRUCTURING

    On May 6, 1993, the Corporation completed a a comprehensive restructuring of
its debt (the "Restructuring") through implementation of a "prepackaged" plan of
reorganization under the federal bankruptcy  laws (the "Prepackaged Plan").  The
Restructuring  significantly reduced the Corporation's overall interest and debt
repayment obligations and extended  the maturities of  a substantial portion  of
its  remaining  debt.  In  the  Restructuring,  the  Corporation  (i)  converted
approximately $1.4 billion of subordinated debt and accrued interest into Common
Stock and warrants to purchase Common Stock  at an exercise price of $16.14  per
share  (the "Warrants"), (ii)  converted approximately $340  million of its bank
obligations into 10 1/4% Senior Notes due 2002 ("Senior 2002 Notes"), and  (iii)
extended  the maturities  of its remaining  bank obligations  and certain public
debt. Subsequent to the Restructuring, the Corporation

                                       4
<PAGE>
also completed an exchange  offer that converted an  additional $138 million  of
bank  debt  into  Senior  2002  Notes and  eliminated  all  scheduled  bank debt
amortization prior to December 31,  1997. See "The Restructuring,"  "Description
of Credit Agreement" and "Risk Factors."

                  PURPOSE OF THE OFFERING AND USE OF PROCEEDS

   
    The  Offering is part of a refinancing  strategy which also includes (i) the
placement (the "Note  Placement") of  $150 million  principal amount  of 9  1/4%
Senior  Notes  due 2001  (the "Senior  2001  Notes") with  certain institutional
investors and (ii)  the amendment of  USG's bank credit  agreement (the  "Credit
Agreement  Amendments" and, together  with the Offering  and the Note Placement,
the "Transactions"). In the Note Placement, USG issued the Senior 2001 Notes  in
exchange  for approximately  $85 million in  cash and  approximately $30 million
aggregate principal amount  of its  outstanding 8%  Senior Notes  due 1996  (the
"Senior  1996  Notes")  and  $35  million  aggregate  principal  amount  of  its
outstanding 8% Senior Notes due 1997  (the "Senior 1997 Notes"). The closing  of
the  Note  Placement  occurred  on  February  17,  1994.  The  Credit  Agreement
Amendments will increase the size of the Corporation's revolving credit facility
by $70 million and amend existing mandatory bank term loan prepayment provisions
so as to allow USG, upon the  achievement of certain financial tests, to  retain
additional  free  cash flow  for capital  expenditures and  the purchase  of its
public debt. Certain of  the Credit Agreement Amendments  are contingent on  the
consummation of the Offering.
    

   
    USG  expects to use a portion of the  net proceeds from the Offering and the
Note Placement,  together  with  approximately $158  million  of  existing  cash
generated  from operations, to pay $140 million  of its bank debt and to redeem,
at 100% of principal amount,  $75 million of its 8%  Senior Notes due 1995  (the
"Senior  1995  Notes") and  $35 million  of its  9% Senior  Notes due  1998 (the
"Senior 1998 Notes"). The Corporation also expects  to use a portion of the  net
proceeds  to  purchase up  to a  total of  approximately $85  million additional
principal amount of  its outstanding Senior  1996 Notes and  Senior 1997  Notes,
depending  upon market  conditions. The  remainder of  the net  proceeds will be
available for  general corporate  purposes, including  capital expenditures  for
cost  reduction,  capacity  improvement  and  future  growth  opportunities. The
Corporation has no present plans, commitments or understandings with respect  to
significant  future acquisitions,  but may  take advantage  of opportunities, if
any, that may arise in the future.
    

    Sources and  uses  of funds  in  the Transactions  are  estimated to  be  as
follows:

<TABLE>
<CAPTION>
                                                                           (DOLLARS IN MILLIONS)
<S>                                                                        <C>
Sources:
  The Offering, net of the estimated underwriting discount and
   expenses..............................................................        $     198
  The Note Placement.....................................................              150
  Cash on hand...........................................................              158
                                                                                     -----
                                                                                 $     506
                                                                                     -----
                                                                                     -----
Uses:
  Payment of bank debt...................................................        $     140
  Redemption of Senior 1995 Notes and Senior 1998 Notes..................              110
  Acquisition of Senior 1996 Notes and Senior 1997 Notes.................              150
  General corporate purposes.............................................              106
                                                                                     -----
                                                                                 $     506
                                                                                     -----
                                                                                     -----
</TABLE>

    Collectively,  the  Transactions are  designed, among  other things,  to (i)
reduce the Corporation's financial leverage through the retirement of up to $250
million principal amount of the Corporation's total debt (net of the issuance of
$150 million principal amount of Senior 2001 Notes in the Note Placement),  (ii)
reduce the amount of the Corporation's public debt maturing in 1995 through 1998
by  up to $260 million (depending on  the principal amount of outstanding Senior
1996 Notes  and Senior  1997 Notes  purchased) and  prepay the  $140 million  of
scheduled bank debt amortization in those years,

                                       5
<PAGE>
   
(iii)  extend the final  maturity of a significant  portion of the Corporation's
debt through the Note  Placement, (iv) improve  the Corporation's financial  and
operating  flexibility  under  its  bank credit  agreement  and  (v)  provide an
estimated $106  million  in  funds for  general  corporate  purposes,  including
capital  expenditures for cost reduction, capacity improvement and future growth
opportunities. See "Management's Discussion and Analysis of Financial  Condition
and  Results of Operations  -- Liquidity and Capital  Resources" and "Purpose of
the Offering and Use of Proceeds."
    

                                  THE OFFERING

<TABLE>
<S>                                 <C>
Common Stock offered by the
 Corporation:
  U.S. Offering...................  5,950,000 shares
  International Offering..........  1,050,000 shares
                                    ------------------
    Total.........................  7,000,000 shares
Common Stock offered by the
 Selling Stockholder:
  U.S. Offering...................  4,675,000 shares
  International Offering..........  825,000 shares
                                    ------------------
    Total.........................  5,500,000 shares
Common Stock outstanding (a):
  Prior to the Offering...........  37,158,085 shares
  After the Offering..............  44,158,085 shares
Use of Proceeds...................  Payment of indebtedness and general corporate purposes,
                                    including capital expenditures for cost reduction,
                                    capacity improvement and future growth opportunities.
                                    See "Purpose of the Offering and Use of Proceeds."
NYSE Symbol.......................  USG
<FN>
- ------------------------
(a) Does not include (i)  warrants to purchase up  to an aggregate of  2,601,619
    shares  of  Common Stock  which are  immediately exercisable  at a  price of
    $16.14 per  share, (ii)  options held  by management  to purchase  up to  an
    aggregate  of 1,673,000 shares of Common Stock which will become exercisable
    at a price of $10.3125  per share in the years  1994 through 1996 and  (iii)
    options  granted to  management on  February 9,  1994 to  purchase up  to an
    aggregate of 933,000 shares of Common Stock which will become exercisable at
    a price  of  $32.5625  per  share  in  the  years  1995  through  1997.  See
    "Management -- Executive Compensation and Benefits."
</TABLE>

                                       6
<PAGE>
                         SUMMARY FINANCIAL INFORMATION
    (Dollars in millions, except per share data and gypsum wallboard prices)

    The  following tables present summary historical financial data, summary pro
forma financial data and certain other information. Due to the Restructuring and
implementation of fresh start accounting, financial statements effective May  7,
1993  are not comparable to financial statements for periods prior to that date.
Accordingly, a vertical line  has been added to  separate such information.  The
information  in  the  tables  should  be  read  in  conjunction  with  "Selected
Consolidated Financial Data," "Management's Discussion and Analysis of Financial
Condition  and  Results  of  Operations,"  "Pro  Forma  Condensed   Consolidated
Financial  Statements" and  the Corporation's  Consolidated Financial Statements
and notes thereto, all of which  are included elsewhere in this Prospectus.  See
"Index to Financial Statements."

    The  unaudited pro forma earnings statement data for the year ended December
31, 1993 and the unaudited pro forma balance sheet data as of December 31,  1993
were  prepared  as if  the  Transactions had  occurred  on January  1,  1993 and
December 31, 1993, respectively. The  unaudited pro forma income statement  data
reflects  the  implementation of  the Restructuring,  including the  adoption of
fresh start accounting prescribed by AICPA  Statement of Position 90-7, and  the
issuance  of $138 million in aggregate principal  amount of Senior 2002 Notes in
exchange for bank debt as if those transactions had also occurred on January  1,
1993.  The unaudited pro forma financial data shown below does not purport to be
indicative of the results of operations  that would actually have been  reported
had  such transactions actually been consummated on such dates or of the results
of operations  that  may be  reported  by the  Corporation  in the  future.  For
additional detail, see "Pro Forma Condensed Consolidated Financial Statements."

HISTORICAL INFORMATION

<TABLE>
<CAPTION>
                                                     MAY 7 THROUGH     JANUARY 1       YEARS ENDED DECEMBER 31,
                                                     DECEMBER 31,     THROUGH MAY   ------------------------------
                                                         1993         6, 1993(A)      1992       1991       1990
                                                    ---------------   -----------   --------   --------   --------
EARNINGS STATEMENT DATA:
<S>                                                 <C>               <C>           <C>        <C>        <C>
  Net sales.......................................       $1,325         $ 591        $1,777     $1,712     $1,915
  Gross profit....................................          263           109           317        327        416
  Amortization of Excess Reorganization Value.....          113            --            --         --         --
  Operating profit................................            1            38            99        133        195
  Interest expense................................           92            86           334        333        292
  Interest income.................................           (4)           (2)          (12)       (11)        (8)
  Other (income)/expense, net.....................           (8)            6             1          5          5
  Reorganization items............................           --          (709)(b)        --         --         --
  Extraordinary gain/(loss), net of taxes.........          (21)          944            --         --         --
  Net earnings/(loss) (c).........................         (129)        1,434          (191)      (161)       (90)
  Average number of common shares (d).............   37,157,672
  Loss before extraordinary loss per common
   share..........................................        (2.90)
  Net loss per common share (c)(d)................        (3.46)
  Dividends paid per common share (d).............           --
BALANCE SHEET DATA (as of the end of the period):
  Total assets....................................        2,163         2,194         1,659      1,626      1,675
  Total debt......................................        1,531(e)      1,556(e)      2,711      2,660      2,600
  Total stockholders' equity/(deficit)............         (134)            4        (1,880)    (1,680)    (1,518)
OTHER INFORMATION:
  EBITDA (f)......................................          155            63           159        194        280
  Capital expenditures............................           29            12            49         49         64
  Gross margin (g)................................         19.8%         18.4%         17.8%      19.1%      21.7%
  EBITDA margin (h)...............................         11.7%         10.7%          8.9%      11.3%      14.6%
  Gypsum wallboard shipments: (i)
    Total U.S. Industry...........................         14.9           6.7          20.3       18.4       20.7
    U.S. Gypsum...................................          5.0           2.3           7.2        6.6        7.2
  Average U.S. Gypsum wallboard price (j).........       $80.58        $75.81        $71.58     $72.53     $79.08
</TABLE>

                                       7
<PAGE>
PRO FORMA INFORMATION (K)

<TABLE>
<CAPTION>
                                                                                           YEAR
                                                                                           ENDED
                                                                                          DECEMBER
                                                                                            31,
                                                                                           1993
                                                                                          -------
<S>                                                                                       <C>
EARNINGS STATEMENT DATA:
  Operating loss.......................................................................... $  (18)
  Interest expense........................................................................    122
  Interest income.........................................................................     (6)
  Other income, net.......................................................................     (3)
  Loss before extraordinary gain and changes in accounting principles (l)(m)..............   (166)
  Loss before extraordinary gain and changes in accounting principles per common share
   (l)(m).................................................................................  (3.76)
BALANCE SHEET DATA (as of the end of the period):
  Total assets............................................................................  2,111
  Total debt..............................................................................  1,281(n)
  Total stockholders' equity..............................................................     63
OTHER INFORMATION:
  EBITDA (f)..............................................................................    218
  Amortization of Excess Reorganization Value.............................................    170
<FN>
- ------------------------------
(a) Fresh start accounting adjustments were recorded on May 6, 1993.
(b) Reflects  one-time gain from reorganization items, including an $851 million
    gain from recording Excess Reorganization  Value, partially offset by  other
    fresh start adjustments, fees and expenses associated with the Restructuring
    and  a  write-off  of  deferred financing  costs  associated  with  the 1988
    Recapitalization.
(c) For the period of  May 7 through December  31, 1993, amortization of  Excess
    Reorganization  Value ($113  million) and  reorganization debt  discount ($8
    million) reduced reported net earnings by $121 million, or $3.26 per  share.
    Reorganization debt discount is a component of interest expense.
(d) Common  shares and per share data for periods prior to May 7, 1993 have been
    omitted because, due to the Restructuring and implementation of fresh  start
    accounting, they are not meaningful.
(e) Total debt as of December 31 and May 6, 1993 are shown at principal amounts.
    The  carrying amounts (net  of unamortized reorganization  debt discount) as
    reflected on the Corporation's balance sheets  as of those dates are  $1,476
    million and $1,461 million, respectively.
(f) EBITDA  represents earnings before interest, taxes, depreciation, depletion,
    amortization,  non-cash   postretirement  charges,   reorganization   items,
    extraordinary  gain,  discontinued  operations  and  changes  in  accounting
    principles. The Corporation believes EBITDA is helpful in understanding cash
    flow generated from operations that is available for taxes, debt service and
    capital expenditures.  In addition,  EBITDA  facilitates the  monitoring  of
    covenants  related to  certain long-term  debt and  other agreements entered
    into in conjunction with the Restructuring. EBITDA should not be  considered
    by  investors  as an  alternative to  net  earnings as  an indicator  of the
    Corporation's operating performance  or to cash  flows as a  measure of  its
    overall liquidity.
(g) Gross profit as a percentage of net sales.
(h) EBITDA as a percentage of net sales.
(i) In billions of square feet.
(j) Represents  average price per  thousand square feet  realized by U.S. Gypsum
    during the periods shown.
(k) For additional pro forma information, see "Pro Forma Condensed  Consolidated
    Financial Statements."
(l) Pro  forma earnings statement data reflects  the impact of the Transactions,
    implementation of the Restructuring, including  the adoption of fresh  start
    accounting  prescribed by AICPA Statement of Position 90-7, and the issuance
    of $138  million in  aggregate  principal amount  of  Senior 2002  Notes  in
    exchange  for bank  debt as  if all  of these  transactions had  occurred on
    January 1, 1993. The Transactions alone  had the impact of reducing the  pro
    forma loss before extraordinary gain and changes in accounting principles by
    $11 million, or $0.25 per share.
(m) Amortization   of   Excess   Reorganization   Value   ($170   million)   and
    reorganization debt discount ($10 million) reduced pro forma earnings before
    extraordinary gain and changes in accounting principles by $180 million,  or
    $4.08  per share.  Reorganization debt discount  is a  component of interest
    expense.
(n) Total pro forma  debt as  of December  31, 1993  is shown  at the  principal
    amount.   The  carrying  amount  (net  of  unamortized  reorganization  debt
    discount) as reflected on the Pro Forma Condensed Consolidated Balance Sheet
    as of December 31, 1993 is $1,227 million.
</TABLE>

                                       8
<PAGE>
                                  RISK FACTORS

    PROSPECTIVE  PURCHASERS OF THE  COMMON STOCK OFFERED  HEREBY SHOULD CONSIDER
CAREFULLY THE FACTORS  SET FORTH  BELOW, AS WELL  AS THE  OTHER INFORMATION  SET
FORTH IN THIS PROSPECTUS.

HIGH LEVERAGE

   
    The  Corporation  will  remain  highly  leveraged  upon  completion  of  the
Transactions. As  of  December 31,  1993,  the Corporation  had  $1,531  million
principal amount of total debt (which had a carrying amount of $1,476 million on
the  Corporation's balance sheet after deducting unamortized reorganization debt
discount of $55 million) and a deficit in stockholders' equity of $134  million.
As  adjusted  to reflect  the Offering  and the  debt repayments  to be  made in
connection with the  Transactions, the Corporation's  total principal amount  of
debt  and stockholders' equity  as of December  31, 1993 would  have been $1,281
million and $63  million, respectively. The  Corporation is expected  to have  a
deficit  in stockholders'  equity at least  during the period  from 1993 through
1998 when  reorganization  value  in  excess  of  identifiable  assets  ("Excess
Reorganization  Value") will be amortized. See  "Risk Factors -- Recent Losses,"
"Selected Consolidated  Financial Data,"  "Purpose of  the Offering  and Use  of
Proceeds" and "Capitalization."
    

    The  degree to which the Corporation is leveraged will pose risks to holders
of the  Common  Stock, including,  but  not limited  to,  the following:  (i)  a
significant  portion  of the  Corporation's cash  flow  from operations  will be
dedicated to the payment of principal and interest on its indebtedness,  thereby
reducing  the funds  available to the  Corporation for its  operations; (ii) the
Corporation's ability to obtain additional  financing in the future for  working
capital, capital expenditures, acquisitions, general corporate purposes or other
purposes  will be restricted; (iii) certain  of the Corporation's borrowings are
and will continue  to carry variable  rates of interest,  which could result  in
higher  interest expense in the event of an increase in interest rates; and (iv)
certain indebtedness contains financial  and restrictive covenants, the  failure
to  comply with which may result  in an event of default  which, if not cured or
waived, could have a material adverse effect on the Corporation. These and other
factors could  have material  adverse effects  on the  marketability, price  and
future value of the Common Stock.

LIQUIDITY; RELIANCE ON RECOVERY IN CONSTRUCTION-BASED MARKETS

    The Corporation believes that cash generated by operations and the estimated
levels  of liquidity available  to the Corporation will  be sufficient to permit
the Corporation  to satisfy  its  debt service  requirements and  other  capital
requirements  for the foreseeable future. However, the Corporation is subject to
significant business, economic and competitive uncertainties that are beyond its
control. Therefore, there can be  no assurance that the Corporation's  financial
resources  will be  sufficient for the  Corporation to satisfy  its debt service
obligations and  other  capital  requirements. See  "Risk  Factors  --  Cyclical
Business"  and "Management's Discussion and  Analysis of Financial Condition and
Results of Operations -- Liquidity and Capital Resources."

RECENT LOSSES

    During the period  from May  7 through  December 31,  1993, the  Corporation
reported  a net loss of  $129 million after the  amortization of $113 million of
Excess Reorganization Value.  The Corporation  expects to report  net losses  at
least  until its  Excess Reorganization Value  is fully amortized  in 1998. Such
amortization will be $170 million per year in 1994 through 1997 and $57  million
in  1998. Although a significant portion  of the Corporation's recent net losses
are the result of non-cash items, there can be no assurance that the Corporation
will have net income in the future.

CYCLICAL BUSINESS

    The Corporation's business is cyclical in nature and sensitive to changes in
general economic conditions, including, in particular, conditions in the housing
and construction-based  markets.  These markets  are  in turn  influenced  by  a
variety  of factors beyond the  Corporation's control, including interest rates.
As a result  of this  cyclicality, the Corporation  has experienced  and in  the
future  could  experience reduced  revenues and  margins,  which may  affect the
Corporation's ability to satisfy its debt service obligations on a timely basis.
See  "Business"  and   "Management's  Discussion  and   Analysis  of   Financial

                                       9
<PAGE>
Condition  and Results  of Operations."  During 1992,  a modest  recovery in the
Corporation's markets was evidenced by increases in housing starts and wallboard
pricing and shipments, in addition to improvement in sales of other construction
products over 1991. This  recovery continued in 1993.  However, there can be  no
assurance that the modest recovery which began in 1992 will continue.

NONCOMPARABILITY OF HISTORICAL FINANCIAL INFORMATION

    As  a result of the  adoption of fresh start  accounting upon emergence from
bankruptcy, the  Corporation's  assets and  liabilities  were adjusted  to  fair
values  and retained  earnings were restated  to zero.  The historical financial
information presented herein should not,  therefore, be viewed as indicative  of
the  Corporation's  future  financial  performance.  For  a  discussion  of  the
Corporation's results of operations since emergence from Chapter 11 proceedings,
see "Management's Discussion and Analysis of Financial Condition and Results  of
Operations."

ASBESTOS LITIGATION

    One  of  the  Corporation's subsidiaries,  U.S.  Gypsum, is  a  defendant in
asbestos lawsuits alleging  property damage  (the "Property  Damage Cases")  and
personal  injury (the "Personal Injury Cases")  and seeking compensatory and, in
many cases, punitive damages. This litigation  has not had a material effect  on
the  Corporation's liquidity  or earnings. To  date, virtually all  costs of the
Personal Injury Cases have been paid by insurance. U.S. Gypsum estimates that it
is probable that the Personal Injury Cases  pending at December 31, 1993 can  be
disposed  of for an amount between $100  million and $120 million, virtually all
of which is expected to  be paid by insurance. U.S.  Gypsum is unable to make  a
reasonable  estimate of  the cost  of disposing  of its  pending Property Damage
Cases, some of which  are class actions or  involve multiple buildings. Many  of
U.S.  Gypsum's insurance carriers  are denying coverage  for the Property Damage
Cases, although U.S. Gypsum  believes that substantial  coverage exists and  the
trial  court in U.S. Gypsum's insurance  coverage action (the "Coverage Action")
against its carriers has so ruled (such ruling has been appealed).

    In view of the limited insurance funding currently available to U.S.  Gypsum
for Property Damage Cases resulting from continued resistance by a number of its
insurers  to providing  coverage, the effect  of the asbestos  litigation on the
Corporation will depend upon a variety of factors, including the damages  sought
in  Property  Damage Cases  that  reach trial  prior  to the  completion  of the
Coverage Action, U.S.  Gypsum's ability  to successfully defend  or settle  such
cases,  and the resolution  of the Coverage  Action. As a  result, management is
unable to determine whether an adverse  outcome in the asbestos litigation  will
have  a material adverse effect on the results of operations or the consolidated
financial position  of the  Corporation.  The Corporation's  independent  public
accountants have also noted this uncertainty in their report with respect to the
financial statements of the Corporation. See "Business -- General Information --
Asbestos  Litigation"  and  "Consolidated  Financial  Statements  --  Report  of
Independent Public Accountants."

CREDIT AGREEMENT AND OTHER RESTRICTIONS

    The Credit  Agreement contains  certain  restrictions on  the  Corporation's
operations  including, among  other things,  limitations on  the ability  of the
Corporation and certain of its  subsidiaries ("Restricted Subsidiaries") to  (i)
incur  additional  indebtedness,  subject to  certain  exceptions,  including an
exception allowing an aggregate of $50 million of capitalized lease  obligations
and  an  aggregate of  $75 million  of  indebtedness to  be incurred  by foreign
subsidiaries that are not Restricted Subsidiaries, (ii) make any investments  in
excess  of $5 million in the aggregate, subject to certain exceptions, including
an exception allowing the Corporation (subject to certain terms and  conditions)
to  repurchase its public  senior debt with certain  proceeds of permitted asset
sales, certain proceeds from  the issuance of public  equity or debt  securities
and  certain excess cash  flow otherwise payable  to the Banks  under the Credit
Agreement, (iii) make  capital expenditures, subject  to various exceptions  and
limitations,  or sell assets outside the ordinary course of business, subject to
certain exceptions,  including an  exception allowing  for sales  of up  to  $20
million in any fiscal year and $5 million in any single transaction or series of
related  transactions, (iv)  make certain  payments with  respect to outstanding
stock and  debt,  (v)  give  guarantees, and  (vi)  effect  certain  fundamental
changes,   such   as   the   sale   of  all   or   substantially   all   of  the

                                       10
<PAGE>
Corporation's or  any Restricted  Subsidiary's assets,  or enter  into  mergers,
recapitalizations  or other similar transactions.  Although the Credit Agreement
Amendments are designed  to increase the  Corporation's financial and  operating
flexibility  in  certain regards,  the  foregoing restrictions  will nonetheless
limit the Corporation's ability  to respond to opportunities  or changes in  its
business. See "Description of Credit Agreement."

    In  addition, after January  1, 1995, the Credit  Agreement will require the
Corporation to achieve and  maintain certain financial  ratios and tests.  There
can  be no assurance that  the Corporation will be  able to achieve and maintain
compliance with the prescribed financial ratios and tests or other  requirements
under  the Credit Agreement. Failure to achieve or maintain compliance with such
financial ratios  and tests  or other  requirements under  the Credit  Agreement
would  result  in  a  default  that  could  lead  to  the  acceleration  of  the
Corporation's obligations under the Credit Agreement. An acceleration under  the
Credit  Agreement would in turn permit the acceleration of other indebtedness of
the Corporation. The acceleration of any  such indebtedness would result in  its
becoming  immediately  due  and  payable and  could  result  in  the Corporation
becoming subject  to  a  proceeding  under  the  federal  bankruptcy  laws.  See
"Description Of Credit Agreement."

    In  addition  to  the restrictions  and  covenants contained  in  the Credit
Agreement, the Senior  2002 Notes  contain restrictions  on the  ability of  the
Corporation  and  the  Subsidiaries  to incur  additional  indebtedness,  to pay
dividends on the  Common Stock,  to effect  certain fundamental  changes and  to
enter  into certain types of transactions. See "Description of Credit Agreement"
and "Description of Other Debt Obligations."

RESTRICTIONS ON COMMON STOCK DIVIDENDS

    The Corporation  anticipates that  no cash  dividends will  be paid  on  the
Common  Stock for the foreseeable future.  Further, the Corporation's ability to
pay cash dividends  on the  Common Stock  is restricted  under a  number of  the
Corporation's  existing agreements. For example,  the Senior 2002 Notes prohibit
the payment of  cash dividends on  the Common Stock  subject to certain  limited
exceptions  and the Credit Agreement prohibits the payment of any cash dividends
on the  Common Stock.  See "Dividend  Policy," "Description  of Capital  Stock,"
"Description of Credit Agreement" and "Description of Other Debt Obligations."

ANTITAKEOVER PROVISIONS

    The   Corporation's   Certificate   of   Incorporation,   the  Corporation's
Shareholder Rights  Plan  and  the  Delaware  General  Corporation  Law  contain
provisions  that could  have the effect  of delaying  or preventing transactions
that result in a change of control of the Corporation, including transactions in
which stockholders  might  otherwise receive  a  substantial premium  for  their
shares   over  then  current  market  prices,  and  may  limit  the  ability  of
stockholders to approve  transactions that  they may deem  to be  in their  best
interests. See "Description of Capital Stock."

FUTURE DISTRIBUTIONS OR SALES OF COMMON STOCK

   
    Water Street Corporate Recovery Fund I, L.P. ("Water Street"), together with
its  affiliates  Goldman,  Sachs  &  Co.  and  The  Goldman  Sachs  Group,  L.P.
(collectively the "Water Street  Entities"), beneficially own 16,105,840  shares
of Common Stock (including 116,070 Warrants), or approximately 43% of the Common
Stock  outstanding  as  of December  31,  1993.  Water Street  proposes  to sell
5,500,000 shares  of Common  Stock in  the Offering.  Upon consummation  of  the
Offering,  the Water Street Entities will  beneficially own 10,605,840 shares of
Common Stock (including 116,070  warrants), or approximately  24% of the  Common
Stock  to be outstanding after the Offering. Goldman, Sachs & Co. is the general
partner of Water  Street. Messrs. Zubrow  and Fetzer, who  are directors of  the
Corporation, are general partners of Goldman, Sachs & Co.
    

    On  February 25, 1993, the Corporation  entered into a letter agreement with
the Water  Street Entities  (the  "Water Street  Agreement"). The  Water  Street
Agreement,  among other things,  (i) restricts purchases of  Common Stock by the
Water Street  Entities; (ii)  governs voting  by the  Water Street  Entities  of
shares  of Common Stock beneficially owned by them; (iii) restricts transfers by
the Water Street

                                       11
<PAGE>
Entities of  shares  of  Common  Stock  to any  person,  except  for  (a)  sales
consistent  with Rule 144 of the Securities Act of 1933, (b) underwritten public
offerings, (c) persons not known to be 5% holders, (d) pledgees who agree to  be
bound  by certain provisions of  the Water Street Agreement,  (e) in the case of
Water Street, distributions to  Water Street's partners  in accordance with  the
governing  partnership  agreement, (f)  pursuant to  certain tender  or exchange
offers for shares of Common Stock  and (g) pursuant to transactions approved  by
the  Board; (iv) requires that the Corporation's Shareholder Rights Plan provide
temporary exemptions for ownership of Common Stock by the Water Street Entities;
and (v)  provides Water  Street  with four  demand registrations  and  unlimited
piggyback  registrations,  subject to  certain  limitations. During  the 120-day
period after  the effective  date of  the  Offering, Water  Street (and,  if  it
distributes  Common Stock to the partners of Water Street, those partners) shall
not request a  demand registration  of Common  Stock. In  addition, during  such
120-day  period,  Water  Street and  Goldman,  Sachs  & Co.  shall  not  sell or
otherwise dispose of any shares of Common Stock or Warrants, except that, at any
time after 90 days after  the effective date of  the Offering, Water Street  may
distribute  all or any portion of its shares of Common Stock and Warrants to the
partners in Water Street in accordance with its governing partnership agreement.
In the event of any such distribution by Water Street, the partners (other  than
Goldman,  Sachs & Co.) would not be subject to the restriction on selling shares
of Common Stock or Warrants during  the remainder of the 120-day period.  Except
in  the  case of  the Offering,  the  Corporation and  Water Street  have mutual
piggyback rights  on registrations  initiated by  either, generally  on a  50-50
basis.

    There  can be no assurance as to  what effect future distributions of Common
Stock by Water Street  to its partners  or future sales by  Water Street or  its
partners  would have on the trading markets for the Common Stock. See "Ownership
of Common Stock" and "Certain Relationships and Related Transactions."

                               THE RESTRUCTURING

    In July 1988, the  Corporation consummated a  plan of recapitalization  (the
"1988 Recapitalization") in part in response to an unsolicited takeover attempt.
Approximately  $2.5  billion in  new  debt was  incurred  by the  Corporation to
finance the  1988 Recapitalization,  pay related  costs and  repay certain  debt
existing  at  that  time.  The  1988  Recapitalization  immediately  changed the
Corporation's capital structure to one that was highly leveraged. At the time of
the  1988  Recapitalization,  the  Corporation  projected  that  it  would  have
sufficient  cash flows to meet its debt  service obligations in a timely manner.
However, the Corporation was  adversely affected by a  cyclical downturn in  its
construction-based  markets  which resulted  in  the Corporation's  inability to
achieve projected operating results  and service certain  debt obligations in  a
timely manner.

    On  May  6,  1993  (the "Effective  Date"),  the  Corporation  completed the
Restructuring  through   the  implementation   of   a  "prepackaged"   plan   of
reorganization  (the "Prepackaged Plan") which was confirmed under Chapter 11 of
Title 11 of the United States Code (the "Bankruptcy Code") by the United  States
Bankruptcy  Court for the District of  Delaware. The principal components of the
Restructuring were:

       - Conversion of  approximately $1.4 billion  of subordinated  debt
       and  accrued interest  into approximately  36.1 million  shares of
        Common Stock and Warrants  to purchase approximately 2.6  million
        additional shares of Common Stock.

       -  Extension of the maturity of the Corporation's bank obligations
       through the issuance of approximately $340 million of Senior  2002
        Notes,  approximately $56  million aggregate  principal amount of
        capitalized interest notes and approximately $540 million of term
        loans  with  mandatory  amortizations  from  1994  to  2000;  the
        implementation  of  mandatory  prepayment provisions  and  a cash
        sweep mechanism; the extension of the Corporation's then existing
        revolving credit facility through July  13, 1998; and the  making
        available  of  an  interest  rate  on  the  bank  term  loans and
        revolving credit loans of LIBOR plus 1 7/8% (or, at USG's option,
        a base rate maintained by the administrative agent plus 7/8%).

                                       12
<PAGE>
       - Extension of the maturity of $100 million of senior notes due in
       1991 and $10 million of Senior 1996 Notes through the issuance  of
        $75  million of Senior 1995 Notes  and $35 million of Senior 1998
        Notes.

Substantially all other  obligations of  the Corporation  and its  subsidiaries,
including obligations arising out of asbestos litigation and certain other legal
proceedings  against the Corporation  or its subsidiaries,  were not affected by
the  Restructuring  and  remained  outstanding.   At  December  31,  1993,   the
Corporation's bank terms loans were subject to an interest rate of approximately
5.4%.  The Corporation's bank obligations, as well as the Senior 2002 Notes, are
entitled to  the benefit  of guarantees  made by  certain of  the  Corporation's
subsidiaries.  See "Risk Factors  -- Asbestos Litigation,"  "Business -- General
Information -- Asbestos Litigation" and "Management's Discussion and Analysis of
Financial Condition and Results of Operations -- Projected Liquidity."

    Subsequent to the Restructuring, on  August 10, 1993 the Corporation  issued
$138 million of additional Senior 2002 Notes in exchange for $92 million of bank
term loans and $46 million of capitalized interest notes. In connection with the
issuance  of the additional Senior 2002  Notes, USG's bank credit agreement (the
"Credit Agreement")  was  modified as  follows:  (i) scheduled  bank  term  loan
amortization  payments  totaling $95  million due  in 1994,  1995 and  1996 were
eliminated ($3 million was added to the final maturity of the bank term loan due
in 2000); (ii) $9 million of  capitalized interest notes originally due in  1998
were  paid;  and (iii)  the  cash sweep  mechanism  was modified  to  permit the
application of up to $165  million of cash otherwise  subject to the cash  sweep
mechanism  in 1994, 1995  and 1996 to  repayment or purchase  of senior debt due
prior to  January  1,  1999  or  bank term  loans,  at  the  discretion  of  the
Corporation.

                  PURPOSE OF THE OFFERING AND USE OF PROCEEDS

   
    The  net proceeds to the  Corporation from the Offering  are estimated to be
approximately $198 million (or $224 million if the Underwriters'  over-allotment
options  are exercised in  full), after deducting  the underwriting discount and
offering expenses.
    

   
    The Offering is part of a  refinancing strategy which also includes (i)  the
placement  of $150  million principal amount  of Senior 2001  Notes with certain
institutional investors  in the  Note Placement  and (ii)  the Credit  Agreement
Amendments.  In the Note Placement, USG issued the Senior 2001 Notes in exchange
for approximately $85 million  in cash and  approximately $30 million  aggregate
principal  amount of its outstanding Senior 1996 Notes and $35 million aggregate
principal amount of its outstanding Senior  1997 Notes. The closing of the  Note
Placement  occurred on February  17, 1994. The  Credit Agreement Amendments will
increase the size of the Corporation's revolving credit facility by $70  million
and amend existing bank term loan mandatory prepayment provisions so as to allow
USG,  upon the achievement of certain financial tests, to retain additional free
cash flow for capital expenditures and the purchase of its public debt.  Certain
of  the Credit  Agreement Amendments are  contingent on the  consummation of the
Offering.
    

   
    USG expects to use a portion of  the net proceeds from the Offering and  the
Note  Placement,  together  with  approximately $158  million  of  existing cash
generated from operations, to pay $140 million  of its bank debt and to  redeem,
at  100%  of principal  amount, $75  million of  its Senior  1995 Notes  and $35
million of its Senior 1998 Notes. The Corporation also expects to use a  portion
of  the net  proceeds to  purchase up  to a  total of  approximately $85 million
additional principal amount of its outstanding Senior 1996 Notes and Senior 1997
Notes, depending upon market conditions. The remainder of the net proceeds  will
be  available for general corporate purposes, including capital expenditures for
cost reduction,  capacity  improvement  and  future  growth  opportunities.  The
Corporation  has no present plans, commitments or understandings with respect to
significant future acquisitions,  but may  take advantage  of opportunities,  if
any, that may arise in the future.
    

                                       13
<PAGE>
    Sources  and  uses of  funds  in the  Transactions  are estimated  to  be as
follows:

<TABLE>
<CAPTION>
                                                                                   (DOLLARS IN MILLIONS)
<S>                                                                                <C>
Sources:
  The Offering, net of the estimated underwriting discount and expenses..........        $     198
  The Note Placement.............................................................              150
  Cash on hand...................................................................              158
                                                                                             -----
                                                                                         $     506
                                                                                             -----
                                                                                             -----
Uses:
  Payment of bank debt...........................................................        $     140
  Redemption of Senior 1995 Notes and Senior 1998 Notes..........................              110
  Acquisition of Senior 1996 Notes and Senior 1997 Notes.........................              150
  General corporate purposes.....................................................              106
                                                                                             -----
                                                                                         $     506
                                                                                             -----
                                                                                             -----
</TABLE>

   
    Collectively, the  Transactions are  designed, among  other things,  to  (i)
reduce the Corporation's financial leverage through the retirement of up to $250
million principal amount of the Corporation's total debt (net of the issuance of
$150  million principal amount of Senior 2001 Notes in the Note Placement), (ii)
reduce the amount of the Corporation's public debt maturing in 1995 through 1998
by up to $260 million (depending  on the principal amount of outstanding  Senior
1996  Notes and  Senior 1997  Notes purchased)  and prepay  the $140  million of
scheduled bank debt amortization in those years, (iii) extend the final maturity
of a significant portion of the  Corporation's debt through the Note  Placement,
(iv)  improve the  Corporation's financial  and operating  flexibility under the
Credit Agreement and (v) provide an estimated $106 million in funds for  general
corporate  purposes, including capital expenditures for cost reduction, capacity
improvement and future  growth opportunities. See  "Management's Discussion  and
Analysis  of  Financial Condition  and Results  of  Operations --  Liquidity and
Capital Resources."
    

                                       14
<PAGE>
                                 CAPITALIZATION

   
    The following table sets forth the unaudited consolidated capitalization  of
the  Corporation and its subsidiaries as of December 31, 1993 and as adjusted to
give effect to the  Transactions, including the issuance  and sale of  7,000,000
shares  of Common Stock by the Corporation in the Offering. This table should be
read  in  conjunction  with  the  Pro  Forma  Condensed  Consolidated  Financial
Statements contained elsewhere in this Prospectus.
    

<TABLE>
<CAPTION>
                                                                              AS OF DECEMBER 31, 1993
                                                                             --------------------------
                                                                             HISTORICAL   PRO FORMA(A)
                                                                             -----------  -------------
<S>                                                                          <C>          <C>
                                                                                    (UNAUDITED)
                                                                               (DOLLARS IN MILLIONS)
Total Debt:
Bank debt..................................................................   $     448     $     308
Senior notes and debentures:
  8% Senior Notes due 1995.................................................          75            --
  8% Senior Notes due 1996.................................................          90            15
  8% Senior Notes due 1997.................................................         100            25
  9% Senior Notes due 1998.................................................          35            --
  9 1/4% Senior Notes due 2001.............................................          --           150
  10 1/4% Senior Notes due 2002............................................         478           478
  7 7/8% Sinking Fund Debentures due 2004..................................          36            36
  8 3/4% Sinking Fund Debentures due 2017..................................         200           200
Industrial revenue bonds and other secured debt............................          69            69
                                                                             -----------  -------------
Total principal amount of debt.............................................       1,531         1,281
Less unamortized reorganization discount...................................         (55)          (54)
                                                                             -----------  -------------
Total carrying amount of debt..............................................       1,476         1,227
                                                                             -----------  -------------
Stockholders' Equity/(Deficit):
  Preferred Stock, $1 par value, 36,000,000 shares authorized, no shares
   outstanding.............................................................          --            --
  Common Stock, $0.10 par value, 200,000,000 shares authorized, 37,158,085
   shares outstanding prior to the Offering, 44,158,085 shares outstanding
   upon consummation of the Offering (b)...................................           4             5
  Capital received in excess of par value..................................          --           197
  Deferred currency translation............................................          (9)           (9)
  Reinvested earnings/(deficit)............................................        (129)         (130)
                                                                             -----------  -------------
    Total stockholders' equity/(deficit)...................................        (134)           63
                                                                             -----------  -------------
      Total capitalization.................................................   $   1,342     $   1,290
                                                                             -----------  -------------
                                                                             -----------  -------------
<FN>
- ------------------------
        (a)  Gives  effect  to  the  acquisition  of  approximately  $30 million
    principal amount of Senior  1996 Notes and $35  million principal amount  of
    Senior 1997 Notes in the Note Placement. Assumes additional purchases by the
    Corporation  of approximately  $45 million  principal amount  of Senior 1996
    Notes and $40 million principal amount of Senior 1997 Notes. The  additional
    purchases  are assumed to be made at  100% of principal amount. However, the
    Senior 1996 Notes and Senior 1997 Notes are not callable and there can be no
    assurance that  the Corporation  will  be able  to purchase  the  additional
    Senior  1996 Notes or Senior 1997 Notes as shown. Funds not used to purchase
    Senior 1996  Notes  and  Senior  1997  Notes  within  12  months  after  the
    consummation  of the Offering may become subject to the cash sweep mechanism
    under the Credit Agreement. See "Description of Credit Agreement."
</TABLE>

                                       15
<PAGE>
<TABLE>
    <S> <C>
        (b) Does not  include (i)  warrants to purchase  up to  an aggregate  of
    2,601,619  shares of  Common Stock  which are  immediately exercisable  at a
    price of $16.14 per share, (ii) options held by management to purchase up to
    an  aggregate  of  1,673,000  shares  of  Common  Stock  which  will  become
    exercisable  at a price of $10.3125 per share in the years 1994 through 1996
    and (iii) options granted to management  on February 9, 1994 to purchase  up
    to  an  aggregate  of  933,000  shares of  Common  Stock  which  will become
    exercisable at a price of $32.5625 per share in the years 1995 through 1997.
    See "Management -- Executive Compensation and Benefits."
</TABLE>

                          PRICE RANGE OF COMMON STOCK

   
    The Common Stock is traded on the NYSE under the symbol "USG." In connection
with the issuance of  shares of Common Stock  pursuant to the Prepackaged  Plan,
trading  of the Common Stock commenced on the NYSE on a when-issued basis on May
7, 1993 and a regular-way basis on May  21, 1993. During the period from May  6,
1993,  the date the Corporation emerged  from Chapter 11 bankruptcy proceedings,
through February 28, 1994,  the high and  low sales prices  of Common Stock,  as
reported  on the NYSE Composite  Tape, were $36 per share  and $9 5/8 per share,
respectively. The last reported  sale price of the  Common Stock as reported  on
the NYSE Composite Tape on March 8, 1994 was $29 7/8 per share. The high and the
low  sales prices of the Common Stock by  quarter during 1993 and for the period
of January 1 through February 28, 1994, as reported on the NYSE Composite  Tape,
were:
    

<TABLE>
<CAPTION>
                                                                               1993                            1994
                                                           --------------------------------------------   ---------------
                                                            MAY 7         JULY 1           OCTOBER 1         JANUARY 1
                                                           THROUGH        THROUGH           THROUGH           THROUGH
                                                           JUNE 30     SEPTEMBER 30       DECEMBER 31       FEBRUARY 28
                                                           --------   ---------------   ---------------   ---------------
<S>                                                        <C>        <C>               <C>               <C>
High.....................................................  $ 14         $  22 5/8         $  30 1/2         $  36
Low......................................................     9 5/8        13                20 1/4            27 1/2
</TABLE>

    Although common stock of the Corporation was publicly traded prior to May 7,
1993,  the historical sales prices are not  comparable with the sales prices set
forth above  due to  the Restructuring.  Potential investors  are encouraged  to
obtain  current trading price  information. As of December  31, 1993, there were
approximately 13,898 stockholders of record of Common Stock.

                                DIVIDEND POLICY

    Since July 1988, the Corporation has not declared or paid any cash dividends
on its  Common Stock.  The Corporation  does  not presently  intend to  pay  any
dividends  in  the foreseeable  future.  In addition,  the  Corporation's Credit
Agreement  and   certain  other   debt   instruments  currently   restrict   the
Corporation's  ability to  pay dividends  to common  stockholders. Moreover, the
Corporation is prohibited from paying any dividends without surplus earnings  or
capital  earmarked  for this  purpose under  Delaware  corporate law.  See "Risk
Factors --  Restrictions on  Common Stock  Dividends," "Description  of  Capital
Stock,"  "Description  of  Credit  Agreement"  and  "Description  of  Other Debt
Obligations."

                                       16
<PAGE>
                                    DILUTION

   
    The following table presents certain information concerning the net tangible
book value  per share  of the  Common  Stock as  of December  31, 1993,  and  as
adjusted  to  reflect  the sale  of  7,000,000  shares of  Common  Stock  by the
Corporation in the Offering, at a public offering price of $29 7/8 per share and
after deducting the estimated offering expenses and underwriting discounts:
    

<TABLE>
<S>                                                        <C>        <C>
Assumed public offering price per share..................             $   29.88
Net tangible book value (deficit) per share before the
 Offering (1)                                              $  (23.37)
Increase per share attributable to payments by new
 investors...............................................       8.18
                                                           ---------
Pro forma net tangible book value (deficit) per share
 after the Offering......................................                (15.19)
                                                                      ---------
Dilution per share to new investors (2)..................             $   45.07
                                                                      ---------
                                                                      ---------
<FN>
- ------------------------
          (1) Net tangible book value per share of Common Stock is determined by
              dividing the Corporation's tangible net worth at December 31, 1993
              by the aggregate number of shares of Common Stock outstanding.
          (2) Dilution is determined by subtracting net tangible book value  per
              share after the Offering from the public offering price per share.
</TABLE>

             PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

    The unaudited Pro Forma Condensed Consolidated Statement of Earnings for the
year  ended December 31, 1993 and the unaudited Pro Forma Condensed Consolidated
Balance Sheet as of December 31, 1993 illustrate the effect of the Transactions.
The unaudited pro  forma condensed consolidated  financial statements should  be
read  in conjunction with "Selected  Consolidated Financial Data," "Management's
Discussion and Analysis of  Financial Condition and  Results of Operations"  and
the  Corporation's Consolidated  Financial Statements and  related notes thereto
contained elsewhere in this Prospectus. See "Index to Financial Statements."

    The unaudited Pro Forma Condensed Consolidated Statement of Earnings for the
year ended December 31, 1993 was prepared as if the Transactions had occurred on
January 1, 1993.  Due to  the Restructuring  and implementation  of fresh  start
accounting,  financial statements  effective May 7,  1993 are  not comparable to
financial statements prior to  that date. However, for  presentation of the  Pro
Forma  Condensed Consolidated Statement of Earnings,  total results for 1993 are
shown under the caption  "Total Before Adjustments."  The adjustments set  forth
under  the caption "Restructuring" reflect the implementation of the Prepackaged
Plan on May 6, 1993, including the adoption of fresh start accounting prescribed
by AICPA  Statement  of Position  90-7,  and the  issuance  of $138  million  in
aggregate  principal amount of Senior 2002 Notes  on August 10, 1993 in exchange
for bank debt as if those transactions had also occurred on January 1, 1993.

    The unaudited Pro Forma Condensed Consolidated Balance Sheet as of  December
31, 1993 was prepared as if the consummation of the Transactions had occurred on
December 31, 1993.

                                       17
<PAGE>
                                USG CORPORATION
             PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1993
                                  (UNAUDITED)
                  (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                           PRO FORMA ADJUSTMENTS
                                                      TOTAL BEFORE    --------------------------------
                                                     ADJUSTMENTS (A)  RESTRUCTURING (B)  TRANSACTIONS    PRO FORMA
                                                     ---------------  -----------------  -------------  -----------
<S>                                                  <C>              <C>                <C>            <C>
Net sales..........................................     $   1,916         $                $             $   1,916
Cost of products sold..............................         1,544                                            1,544
                                                          -------           -------      -------------  -----------
Gross profit.......................................           372                                              372
Selling and administrative expenses................           220                                              220
Amortization of Excess Reorganization Value........           113                57(c)                         170
                                                          -------           -------      -------------  -----------
Operating profit/(loss)............................            39               (57)                           (18)
Interest expense...................................           178               (39)(d)          (17)(e)        122
Interest income....................................            (6)                                              (6)
Other income, net..................................            (2)               (1)                            (3)
Reorganization items...............................          (709)              709(f)                          --
                                                          -------           -------      -------------  -----------
Earnings/(loss) before taxes on income,
 extraordinary gain and changes in accounting
 principles........................................           578              (726)              17          (131)
Taxes on income....................................            46               (17)               6            35
                                                          -------           -------      -------------  -----------
Earnings/(loss) before extraordinary gain and
 changes in accounting principles..................           532              (709)              11          (166)
                                                          -------           -------      -------------  -----------
                                                          -------           -------      -------------  -----------
Earnings/(loss) before extraordinary gain and
 changes in accounting principles per common
 share.............................................            --(g)                                         (3.76)(h)
                                                           -------                                      -----------
                                                           -------                                      -----------
</TABLE>

  SEE ACCOMPANYING NOTES TO THE PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF
                                   EARNINGS.

                                       18
<PAGE>
                                USG CORPORATION
      NOTES TO THE PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1993
                                  (UNAUDITED)
                             (DOLLARS IN MILLIONS)

    The  following  notes set  forth the  explanations  and assumptions  used in
preparing the unaudited Pro Forma Condensed Consolidated Statement of  Earnings.
The pro forma adjustments are based on estimates by the Corporation's management
using information currently available.

    (a) Due  to the Restructuring and  implementation of fresh start accounting,
        financial statements for periods after May 6, 1993 are not comparable to
        financial statements prior  to that date.  However, for presentation  of
        the  Pro Forma Condensed Consolidated Statement of Earnings, results for
        1993 are shown under the caption "Total Before Adjustments."

    (b) The adjustments set forth under the caption "Restructuring" reflect  the
        implementation  of the  Prepackaged Plan on  May 6,  1993, including the
        adoption of  fresh start  accounting prescribed  by AICPA  Statement  of
        Position  90-7, and the issuance of Senior 2002 Notes on August 10, 1993
        in exchange for  bank debt,  as if  those transactions  had occurred  on
        January 1, 1993.

    (c) Reflects  amortization of  Excess Reorganization Value  which would have
        been recorded during the period of January 1 through May 6, 1993 had the
        Restructuring been consummated on January 1, 1993.

    (d) Reflects net reduction of interest expense  for the period of January  1
        through  May 6, 1993  as a result  of the assumed  implementation of the
        Prepackaged Plan and issuance of Senior  2002 Notes on January 1,  1993.
        The net reduction has been estimated as follows:

<TABLE>
<S>                                                             <C>        <C>
Decrease in interest expense:
  Bank debt...................................................  $     (21)
  7 3/8% senior notes due 1991................................         (3)
  13 1/4% senior subordinated debentures......................        (22)
  16% junior subordinated debentures..........................        (18)
                                                                ---------
                                                                           $     (64)
Increase in interest expense:
  Senior 1995 Notes...........................................          2
  Senior 1998 Notes...........................................          1
  Senior 2002 Notes...........................................         18
                                                                ---------
                                                                                  21
Amortization of reorganization debt discount..................                     4
                                                                           ---------
Net reduction of interest expense.............................                   (39)
                                                                           ---------
                                                                           ---------
</TABLE>

                                       19
<PAGE>
                                USG CORPORATION
NOTES TO THE PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF EARNINGS (CONTINUED)

    (e) Reflects   net  reduction  of  interest  expense  as  a  result  of  the
        Transactions. The net reduction has been estimated as follows:

<TABLE>
<S>                                                              <C>        <C>
Decrease in interest expense:
  Bank debt....................................................  $      (8)
  Senior 1995 Notes............................................         (6)
  Senior 1996 Notes............................................         (6)
  Senior 1997 Notes............................................         (6)
  Senior 1998 Notes............................................         (3)
                                                                       ---
                                                                            $     (29)
Increase in interest expense:
  Senior 2001 Notes............................................                    14
Amortization of reorganization debt discount...................                    (2)
                                                                            ---------
Net reduction of interest expense..............................                   (17)
                                                                            ---------
                                                                            ---------
</TABLE>

          Gives effect to the acquisition of approximately $30 million principal
      amount of Senior  1996 Notes and  $35 million principal  amount of  Senior
      1997  Notes in  the Note  Placement. Assumes  additional purchases  by the
      Corporation of approximately $45 million  principal amount of Senior  1996
      Notes  and  $40  million  principal  amount  of  Senior  1997  Notes.  The
      additional purchases are assumed to be  made at 100% of principal  amount.
      However,  the Senior 1996 Notes and Senior 1997 Notes are not callable and
      there can be no  assurance that the Corporation  will be able to  purchase
      the  additional Senior 1996 Notes or Senior 1997 Notes as shown. Funds not
      used to purchase Senior 1996 Notes and Senior 1997 Notes within 12  months
      after  the consummation  of the  Offering may  become subject  to the cash
      sweep mechanism under the Credit  Agreement. If the Corporation is  unable
      to  purchase the  additional Senior  1996 Notes  and Senior  1997 Notes as
      shown, pro  forma pre-tax  interest expense  could increase  by up  to  $2
      million  and pro forma  earnings before extraordinary  gain and changes in
      accounting principles could  decrease by up  to $1 million,  or $0.02  per
      share. See "Description of Credit Agreement."

     (f) Reflects  the  elimination of  the net  gain from  reorganization items
         associated with  the implementation  of the  Prepackaged Plan  and  the
         adoption  of fresh  start accounting, since  this gain  would have been
         recorded in the period prior to January 1, 1993.

    (g) Due to the Restructuring and  implementation of fresh start  accounting,
        earnings/(loss)  before  extraordinary  gain and  changes  in accounting
        principles per  common share  for 1993  shown under  the caption  "Total
        Before Adjustments" is not meaningful and therefore has been omitted.

   
    (h) Pro  forma  earnings/(loss)  before extraordinary  gain  and  changes in
        accounting principles per common share is computed based upon an average
        of 44,157,590 shares of  Common Stock assumed  to be outstanding  during
        the  year ended December 31, 1993. Amortization of Excess Reorganization
        Value ($170  million) and  reorganization  debt discount  ($10  million)
        reduced  pro forma earnings/(loss) before extraordinary gain and changes
        in accounting principles per common share  by $4.08 (or $180 million  in
        total). Reorganization debt discount is a component of interest expense.
    

                                       20
<PAGE>
                                USG CORPORATION
                 PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
                            AS OF DECEMBER 31, 1993
                                  (UNAUDITED)
                  (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                            HISTORICAL   ADJUSTMENTS    PRO FORMA
                                                                            -----------  ------------   ----------
<S>                                                                         <C>          <C>            <C>
Current assets:
  Cash and cash equivalents...............................................  $      211   $    (52)(a)   $     159
  Receivables.............................................................         264                        264
  Inventories.............................................................         145                        145
                                                                            -----------  ------------   ----------
    Total current assets..................................................         620        (52)            568
Property, plant and equipment, net........................................         754                        754
Excess Reorganization Value, net..........................................         735                        735
Other assets..............................................................          54                         54
                                                                            -----------  ------------   ----------
    Total assets..........................................................       2,163        (52)          2,111
                                                                            -----------  ------------   ----------
                                                                            -----------  ------------   ----------
                                       LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable........................................................  $      104   $              $     104
  Accrued expenses........................................................         208                        208
  Notes payable...........................................................           2                          2
  Long-term debt maturing within one year.................................         165       (158)(b)           7
  Taxes on income.........................................................          20                         20
                                                                            -----------  ------------   ----------
    Total current liabilities.............................................         499       (158)            341
                                                                            -----------  ------------   ----------
Long-term debt............................................................       1,309        (91)(b)       1,218
Deferred income taxes.....................................................         180                        180
Other liabilities.........................................................         309                        309
Stockholders' equity/(deficit):
  Preferred stock.........................................................          --                         --
  Common stock............................................................           4          1(c)            5
  Capital received in excess of par value.................................          --        197(c)          197
  Deferred currency translation...........................................          (9 )                       (9 )
  Reinvested earnings/(deficit)...........................................        (129 )       (1)(d)        (130 )
                                                                            -----------  ------------   ----------
    Total stockholders' equity/(deficit)..................................        (134 )      197              63
                                                                            -----------  ------------   ----------
    Total liabilities and stockholders' equity............................       2,163        (52)          2,111
                                                                            -----------  ------------   ----------
                                                                            -----------  ------------   ----------
Book value/(deficit) per common share.....................................       (3.61 )     5.04            1.43
                                                                            -----------  ------------   ----------
                                                                            -----------  ------------   ----------
</TABLE>

 SEE ACCOMPANYING NOTES TO THE PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET.

                                       21
<PAGE>
                                USG CORPORATION
          NOTES TO THE PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
                            AS OF DECEMBER 31, 1993
                                  (UNAUDITED)
                             (DOLLARS IN MILLIONS)

    The  following  notes set  forth the  explanations  and assumptions  used in
preparing the unaudited Pro Forma Condensed Consolidated Balance Sheet. The  pro
forma  adjustments are based on estimates  by the Corporation's management using
information currently available.

    (a) Reflects the reduction in cash and cash equivalents as follows:

<TABLE>
<S>                                                                 <C>
  Payment of bank debt............................................  $    (140)
  Retirement of Senior 1995 Notes.................................        (75)
  Retirement of Senior 1996 Notes.................................        (45)
  Retirement of Senior 1997 Notes.................................        (40)
  Retirement of Senior 1998 Notes.................................        (35)
  Issuance for cash of Senior 2001 Notes in the Note Placement....         85
  Issuance of Common Stock in the Offering........................        198
                                                                    ---------
  Total...........................................................        (52)
                                                                    ---------
                                                                    ---------
</TABLE>

          Gives effect to the acquisition of approximately $30 million principal
      amount of Senior  1996 Notes and  $35 million principal  amount of  Senior
      1997  Notes in  the Note  Placement. Assumes  additional purchases  by the
      Corporation of approximately $45 million  principal amount of Senior  1996
      Notes  and  $40  million  principal  amount  of  Senior  1997  Notes.  The
      additional purchases are assumed to be  made at 100% of principal  amount.
      However,  the Senior 1996 Notes and Senior 1997 Notes are not callable and
      there can be no  assurance that the Corporation  will be able to  purchase
      the  additional Senior 1996 Notes or Senior 1997 Notes as shown. Funds not
      used to purchase Senior 1996 Notes and Senior 1997 Notes within 12  months
      after  the consummation  of the  Offering may  become subject  to the cash
      sweep mechanism under the Credit  Agreement. If the Corporation is  unable
      to  purchase the  additional Senior  1996 Notes  and Senior  1997 Notes as
      shown, pro  forma pre-tax  interest expense  could increase  by up  to  $2
      million  and pro forma  earnings before extraordinary  gain and changes in
      accounting principles could  decrease by up  to $1 million,  or $0.02  per
      share. See "Description of Credit Agreement."

    (b) Reflects net reduction of short and long-term debt as follows:

<TABLE>
<S>                                                                 <C>
  Payment of bank debt............................................  $    (140)
  Retirement of Senior 1995 Notes.................................        (75)
  Retirement of Senior 1996 Notes.................................        (45)
  Retirement of Senior 1997 Notes.................................        (40)
  Retirement of Senior 1998 Notes.................................        (35)
  Issuance of Senior 2001 Notes in the Note Placement.............         85
                                                                    ---------
                                                                         (250)
  Write-off of related unamortized reorganization discount........          1
                                                                    ---------
  Total...........................................................       (249)
                                                                    ---------
                                                                    ---------
</TABLE>

   
    (c) Reflects  the issuance  of 7,000,000 shares  of Common  Stock, par value
        $0.10 per share, in the Offering, yielding net proceeds of $198 million.
    

    (d) Reflects the  write-off  of  an additional  $1  million  of  unamortized
        reorganization  debt discount which would have been recorded on December
        31, 1993 if the Transactions had occurred on that date.

                                       22
<PAGE>
                      SELECTED CONSOLIDATED FINANCIAL DATA
    (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA AND GYPSUM WALLBOARD PRICES)

    The following  table  presents selected  historical  consolidated  financial
information  of  the  Corporation for  the  post-Restructuring period  of  May 7
through December 31,  1993 and for  the pre-Restructuring periods  of January  1
through  May 6,  1993 and  the five years  ended December  31, 1992.  Due to the
Restructuring and implementation of fresh start accounting, financial statements
effective May 7,  1993 are not  comparable to financial  statements for  periods
prior to that date. Accordingly, a vertical line has been added to separate such
information.  The information provided below has  not been audited. However, the
selected annual historical  consolidated financial  information presented  below
has  been derived from the Consolidated  Financial Statements of the Corporation
and its subsidiaries which were examined by Arthur Andersen & Co., whose  report
with  respect to certain of such  financial statements appears elsewhere in this
Prospectus. The following  financial information should  be read in  conjunction
with  "Pro  Forma  Condensed Consolidated  Financial  Statements," "Management's
Discussion and Analysis of  Financial Condition and  Results of Operations"  and
the  Corporation's Consolidated Financial  Statements and notes  thereto, all of
which are  included  elsewhere  in  this Prospectus.  See  "Index  To  Financial
Statements."

<TABLE>
<CAPTION>
                                                MAY 7 THROUGH    JANUARY 1               YEARS ENDED DECEMBER 31,
                                                DECEMBER 31,    THROUGH MAY  ------------------------------------------------
                                                    1993        6, 1993(A)     1992      1991      1990      1989      1988
                                               ---------------  -----------  --------  --------  --------  --------  --------
EARNINGS STATEMENT DATA:
<S>                                            <C>              <C>          <C>       <C>       <C>       <C>       <C>
  Net sales..................................       $1,325         $591        $1,777    $1,712    $1,915    $2,007    $2,070
  Cost of products sold......................        1,062          482         1,460     1,385     1,499     1,506     1,536
                                               ---------------  -----------  --------  --------  --------  --------  --------
  Gross profit...............................          263          109           317       327       416       501       534
  Selling and administrative expenses........          149           71           218       194       203       209       223
  Amortization of Excess Reorganization
   Value.....................................          113           --            --        --        --        --        --
  Restructuring expenses.....................           --           --            --        --        18        --        20
                                               ---------------  -----------  --------  --------  --------  --------  --------
  Operating profit...........................            1           38            99       133       195       292       291
  Interest expense...........................           92           86           334       333       292       297       178
  Interest income............................           (4)          (2)          (12)      (11)       (8)      (10)      (13)
  Other (income)/expense, net................           (8)           6             1         5         5        15        16
  Reorganization items.......................           --         (709)(b)        --        --        --        --        --
  Nonrecurring gain..........................           --           --            --        --       (34)      (33)       --
  Taxes on income/(income tax benefit).......           29           17           (33)      (53)       (6)        3        43
  Extraordinary gain/(loss), net of taxes....          (21)         944            --        --        --        --        --
  Changes in accounting principles, net......           --         (150)           --        --        --        --        --
  Earnings/(loss) from discontinued
   operations, net...........................           --           --            --       (20)      (36)        8        58
                                               ---------------  -----------  --------  --------  --------  --------  --------
  Net earnings/(loss) (c)....................         (129)       1,434          (191)     (161)      (90)       28       125
                                               ---------------  -----------  --------  --------  --------  --------  --------
                                               ---------------  -----------  --------  --------  --------  --------  --------
  Average number of common shares (d)........   37,157,672
  Loss before extraordinary loss per common
   share.....................................        (2.90)
  Net loss per common share (c)(d)...........        (3.46)
  Dividends paid per common share (d)........           --
BALANCE SHEET DATA (as of the end of the
 period):
  Total assets...............................        2,163        2,194         1,659     1,626     1,675     1,585     1,806
  Total debt.................................        1,531(e)     1,556(e)      2,711     2,660     2,600     2,428     2,643
  Total stockholders' equity/(deficit).......         (134)           4        (1,880)   (1,680)   (1,518)   (1,438)   (1,471)
OTHER INFORMATION:
  EBITDA (f).................................          155           63           159       194       280       361       383
  Depreciation, depletion and amortization
   (g).......................................           44           22            66        68        76        79        79
  Capital expenditures.......................           29           12            49        49        64        76        81
  Gross margin (h)...........................         19.8%        18.4%        17.8%      19.1%     21.7%     25.0%     25.8%
  EBITDA margin (i)..........................         11.7%        10.7%         8.9%      11.3%     14.6%     18.0%     18.5%
  Gypsum wallboard shipments: (j)
    Total U.S. Industry......................         14.9          6.7          20.3      18.4      20.7      21.3      21.3
    U.S. Gypsum..............................          5.0          2.3           7.2       6.6       7.2       7.2       7.3
  Average U.S. Gypsum wallboard price (k)....       $80.58       $75.81        $71.58    $72.53    $79.08    $85.68    $90.65
</TABLE>

                                       23
<PAGE>
NOTES TO SELECTED CONSOLIDATED FINANCIAL DATA

(a) Fresh start accounting adjustments were recorded on May 6, 1993.

(b)  Reflects one-time gain from reorganization items, including an $851 million
    gain from recording Excess Reorganization  Value, partially offset by  other
    fresh start adjustments, fees and expenses associated with the Restructuring
    and  a  write-off  of  deferred financing  costs  associated  with  the 1988
    Recapitalization.

(c) For the period of  May 7 through December  31, 1993, amortization of  Excess
    Reorganization  Value ($113  million) and  reorganization debt  discount ($8
    million) reduced reported net earnings by $121 million, or $3.26 per  share.
    Reorganization debt discount is a component of interest expense.

(d)  Common shares and per share data for periods prior to May 7, 1993 have been
    omitted because, due to the Restructuring and implementation of fresh  start
    accounting, they are not meaningful.

(e) Total debt as of December 31 and May 6, 1993 are shown at principal amounts.
    The  carrying amounts (net  of unamortized reorganization  debt discount) as
    reflected on the Corporation's balance sheets  as of those dates are  $1,476
    million and $1,461 million, respectively.

(f)  EBITDA represents earnings before interest, taxes, depreciation, depletion,
    amortization,   non-cash   postretirement  charges,   reorganization  items,
    extraordinary  gain,  discontinued  operations  and  changes  in  accounting
    principles. The Corporation believes EBITDA is helpful in understanding cash
    flow generated from operations that is available for taxes, debt service and
    capital  expenditures.  In addition,  EBITDA  facilitates the  monitoring of
    covenants related to  certain long-term  debt and  other agreements  entered
    into  in conjunction with the Restructuring. EBITDA should not be considered
    by investors  as an  alternative to  net  earnings as  an indicator  of  the
    Corporation's  operating performance  or to cash  flows as a  measure of its
    overall liquidity.

(g) Excludes  amortization  of  Excess  Reorganization  Value,  which  is  shown
    separately under "Earnings Statement Data."

(h) Gross profit as a percentage of net sales.

(i)  EBITDA as a percentage of net sales.

(j)  In billions of square feet.

(k)  Represents average price  per thousand square feet  realized by U.S. Gypsum
    during the periods shown.

                                       24
<PAGE>
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS

RESULTS OF OPERATIONS

    On May 6,  1993, the  Corporation completed  the Restructuring.  Due to  the
Restructuring  and implementation  of fresh start  accounting, the Corporation's
financial statements  effective May  7,  1993 are  not comparable  to  financial
statements for periods prior to that date. See "The Restructuring" and "Index to
Financial  Statements -- Predecessor Company -- Notes to Financial Statements --
Financial Restructuring and Fresh Start Accounting" notes for information on the
Restructuring and implementation of fresh start accounting.

    To  facilitate  a  meaningful  comparison  of  the  Corporation's  operating
performance,  the following  discussion and analysis  is presented  on an annual
basis. Consequently,  1993  information presented  below  does not  comply  with
post-bankruptcy  accounting  rules  which  require  separate  reporting  for the
restructured company  and the  predecessor company.  Included in  the  following
discussion  are comparisons  of earnings  before interest,  taxes, depreciation,
depletion, amortization,  and  additionally for  1993,  non-cash  postretirement
charges,   reorganization  items,  extraordinary   gain/(loss)  and  changes  in
accounting principles ("EBITDA"). The Corporation believes EBITDA is helpful  in
understanding  cash flow generated from operations  that is available for taxes,
debt service  and  capital expenditures.  In  addition, EBITDA  facilitates  the
monitoring  of covenants related to certain  long-term debt and other agreements
entered into  in  conjunction  with  the Restructuring.  EBITDA  should  not  be
considered by investors as an alternative to net earnings as an indicator of the
Corporation's operating performance or to cash flows as a measure of its overall
liquidity.

<TABLE>
<CAPTION>
                                                                                        YEARS ENDED DECEMBER 31,
                                                                                     -------------------------------
CONSOLIDATED RESULTS OF OPERATIONS                                                     1993       1992       1991
- -----------------------------------------------------------------------------------  ---------  ---------  ---------
                                                                                          (DOLLARS IN MILLIONS)
<S>                                                                                  <C>        <C>        <C>
NET SALES..........................................................................  $   1,916  $   1,777  $   1,712
GROSS PROFIT.......................................................................        372        317        327
  % OF NET SALES...................................................................      19.4%      17.8%      19.1%
Selling and administrative expenses................................................        220        218        194
  % OF NET SALES...................................................................      11.5%      12.3%      11.3%
Amortization of Excess Reorganization Value........................................        113         --         --
                                                                                     ---------  ---------  ---------
OPERATING PROFIT...................................................................         39         99        133
                                                                                     ---------  ---------  ---------
                                                                                     ---------  ---------  ---------
CALCULATION OF EBITDA:
  Operating profit.................................................................  $      39  $      99  $     133
  Amortization of Excess Reorganization Value......................................        113         --         --
  Depreciation and depletion.......................................................         54         58         57
  Other............................................................................         12          2          4
                                                                                     ---------  ---------  ---------
  EBITDA...........................................................................        218        159        194
    % OF NET SALES.................................................................      11.4%       8.9%      11.3%
                                                                                     ---------  ---------  ---------
                                                                                     ---------  ---------  ---------
</TABLE>

                                       25
<PAGE>

<TABLE>
<CAPTION>
                                                                               YEARS ENDED DECEMBER 31,
                                                           ----------------------------------------------------------------
                                                                      NET SALES                         EBITDA
                                                           -------------------------------  -------------------------------
RESULTS OF OPERATIONS BY GEOGRAPHIC AREA                     1993       1992       1991       1993       1992       1991
- ---------------------------------------------------------  ---------  ---------  ---------  ---------  ---------  ---------
                                                                                (DOLLARS IN MILLIONS)
<S>                                                        <C>        <C>        <C>        <C>        <C>        <C>
United States:
  Gypsum Products........................................  $     986  $     889  $     835  $     148  $      99  $      93
  Interior Systems.......................................        376        368        386         45         47         59
  Building Products Distribution.........................        528        464        424          7          5          4
  Corporate..............................................         --         --         --        (25)       (28)       (19)
  Intrasegment eliminations..............................       (236)      (216)      (212)        --         --         --
                                                           ---------  ---------  ---------  ---------  ---------  ---------
Total United States......................................      1,654      1,505      1,433        175        123        137
Total Canada.............................................        143        149        169         17         14         29
Total Other Foreign......................................        208        208        193         26         22         28
Transfers between geographic areas.......................        (89)       (85)       (83)        --         --         --
                                                           ---------  ---------  ---------  ---------  ---------  ---------
Total USG Corporation....................................      1,916      1,777      1,712        218        159        194
                                                           ---------  ---------  ---------  ---------  ---------  ---------
                                                           ---------  ---------  ---------  ---------  ---------  ---------
</TABLE>

CONSOLIDATED RESULTS

    Net  sales  increased  for the  second  consecutive  year in  1993,  up $139
million, or 7.8%, over the prior year. Net sales in 1992 increased $65  million,
or  3.8%, over  the 1991 level.  The primary  factor for the  improved levels of
sales has been increased demand for domestic gypsum wallboard which led to  all-
time  record  shipments  in 1993  and  seven consecutive  quarters  of improving
prices. These trends  reflect the  continuing recovery  in domestic  residential
construction  as evidenced by an approximate  7% increase in U.S. housing starts
in 1993  compared with  the 1992  level, which  was 18%  higher than  1991  U.S.
housing starts.

    As  a percentage of net  sales, gross profit in  1993 improved to 19.4% from
17.8% in 1992,  reflecting increased  gypsum wallboard pricing.  In 1992,  gross
profit  as a  percentage of net  sales decreased  from the 1991  level of 19.1%,
primarily due  to lower  margins for  gypsum wallboard  in Canada  and  interior
systems products.

    Selling  and administrative expenses increased slightly in 1993 versus 1992.
However, these expenses  as a  percentage of net  sales improved  to 11.5%  from
12.3%  in 1992 as a result  of the increase in 1993  net sales. In 1992, selling
and administrative expenses increased $24 million, or 12.4%, over the 1991 level
due to  increased  compensation  and  benefits, rent  associated  with  the  new
corporate  headquarters building, expansion  of certain international operations
and  a   nonrecurring  charge   associated  with   organizational   streamlining
activities.

    Effective   May  7,  1993,  the  Corporation  began  amortizing  its  Excess
Reorganization Value  which  was  established in  accordance  with  fresh  start
accounting  rules. This non-cash amortization, which will continue through April
1998, amounted  to $113  million in  1993 with  no counterpart  in prior  years.
Consequently, 1993 operating profit is not comparable to the prior years.

    EBITDA  in 1993 increased $59 million, or 37.1%, over 1992, after decreasing
$35 million, or  18.0%, in 1992  compared with 1991.  These results reflect  the
aforementioned  gross profit performance and the higher 1992 versus 1991 selling
and administrative expenses.

UNITED STATES

    Net sales and EBITDA  for domestic Gypsum  Products (primarily U.S.  Gypsum)
have  increased  for two  consecutive years.  In 1993,  net sales  increased $97
million, or 10.9%, over 1992, following a $54 million, or 6.5%, increase in 1992
compared with 1991. EBITDA  in 1993 improved $49  million, or 49.5%, over  1992,
which  was $6 million, or  6.5%, higher than the  1991 level. These improvements
primarily reflect  improving  gypsum  wallboard  selling  prices  and  increased
volume.  Higher sales of joint compound,  DUROCK cement board and other products
contributed to the more favorable domestic Gypsum Products results.

                                       26
<PAGE>
    As a result of increased demand, 1993 shipments of gypsum wallboard exceeded
7.3 billion square  feet, the highest  level in the  Corporation's history,  and
were  up  2% over  1992.  Shipments in  1992  were up  8%  over 1991.  As gypsum
wallboard demand and industry  capacity utilization increased, prices  improved.
After  reaching a  14-year low  in the first  quarter of  1992, gypsum wallboard
prices rebounded and rose  in each of the  next seven consecutive quarters.  For
1993  as a whole,  gypsum wallboard prices  increased 10.5% over  the prior year
average after  falling 1.3%  in 1992  from 1991.  U.S. Gypsum's  average  gypsum
wallboard prices per thousand square feet for the three years were as follows:

<TABLE>
<CAPTION>
                                                                             1993       1992       1991
                                                                           ---------  ---------  ---------
<S>                                                                        <C>        <C>        <C>
First Quarter............................................................  $   74.97  $   67.77  $   77.05
Second Quarter...........................................................      77.71      72.20      71.93
Third Quarter............................................................      80.70      73.03      71.32
Fourth Quarter...........................................................      82.46      73.35      70.19
Total Year...............................................................      79.07      71.58      72.53
</TABLE>

    Partially  offsetting the favorable price and volume trends in 1993 was a 3%
increase in  unit manufacturing  cost for  gypsum wallboard.  This increase  was
primarily  attributable to higher levels  of maintenance expenditures and energy
cost. In 1992, unit manufacturing cost declined 2% compared with 1991.  However,
EBITDA  in 1992 was unfavorably impacted by  a nonrecurring pre-tax charge of $4
million associated with organizational streamlining activities.

    Net sales in 1993  for domestic Interior  Systems (primarily USG  Interiors)
increased  $8 million, or 2.2%,  over the 1992 level,  while EBITDA decreased $2
million, or 4.3%. Net sales and EBITDA  in 1992 decreased $18 million, or  4.7%,
and  $12  million, or  20.3%,  from the  respective  1991 levels.  These results
primarily reflect low levels of  non-residential construction in 1992 and  1993,
partially  offset in  1993 by  increased sales to  retail markets.  The 1993 net
sales and  EBITDA  trends primarily  reflect  increased sales  of  lower  margin
products and higher raw material costs.

    Building  Products Distribution (L&W Supply) has experienced two consecutive
years of  increased  net sales  and  EBITDA. Net  sales  in 1993  increased  $64
million,  or 13.8%, and  EBITDA rose $2  million, or 40.0%,  over the respective
1992 amounts. Comparing 1992 to  1991, net sales were  up $40 million, or  9.4%,
and  EBITDA increased  $1 million, or  25.0%. These  improvements reflect higher
gypsum wallboard  selling  prices and  increased  volume, as  well  as  improved
results for its other building product lines.

CANADA

    Net sales for the Corporation's Canadian operations (primarily CGC) declined
$6  million, or 4.0%, in  1993 versus 1992, due  to the strengthened U.S. dollar
compared with the Canadian dollar. However, EBITDA was up $3 million, or  21.4%,
in  1993 versus 1992 due to higher selling prices for gypsum wallboard. Canadian
gypsum wallboard  prices were  impacted  in 1993  by the  Canadian  government's
ruling that dumping of U.S.-made gypsum wallboard had occurred and the resulting
imposition  of duties on  gypsum wallboard imported into  Canada from the United
States at  prices below  certain levels.  This ruling  will be  in effect  until
January  1998. For 1992, net  sales and EBITDA decreased  $20 million, or 11.8%,
and $15 million,  or 51.7%,  respectively, from the  corresponding 1991  levels.
These  declines  resulted  from  lower  selling  prices  and  volume  for gypsum
wallboard due to the weak Canadian economy. Results for both 1993 and 1992  were
also  unfavorably impacted by lower sales of CGC's interior systems products due
to the low level of commercial construction.

OTHER FOREIGN

    Despite  the  continuing  recession  in   Europe  and  the  impact  of   the
strengthened  U.S. dollar compared  with European currencies,  net sales in 1993
for the Corporation's Other Foreign businesses (primarily operations in  Europe,
the  Pacific and Mexico  managed by USG International)  were unchanged from 1992
due to  increased sales  of ceiling  tile  in Europe.  However, EBITDA  in  1993
increased  $4  million,  or 18.2%,  over  1992  due to  reduced  overhead costs.
Comparing 1992 to 1991, net sales  increased $15 million, or 7.8%, while  EBITDA
decreased   $6  million,  or  21.4%.  The  improvement  in  net  sales  reflects

                                       27
<PAGE>
increased sales of interior systems products  in certain markets as well as  the
impact  of a weakened U.S.  dollar in 1992. The  decline in EBITDA resulted from
recessionary market conditions  in Europe,  costs associated  with the  Aubange,
Belgium ceiling tile plant and increased overhead costs.

OTHER EARNINGS INFORMATION

    Interest  expense,  which  was  significantly reduced  as  a  result  of the
Restructuring, amounted to $92 million in  the period of May 7 through  December
31,   1993,   of  which   $8  million   represented  non-cash   amortization  of
reorganization debt discount. For the period  of January 1 through May 6,  1993,
interest  expense was  $86 million.  For the years  ended December  31, 1992 and
1991, interest expense was $334 million and $333 million, respectively.

    In connection with the Restructuring, the Corporation recorded in the period
of January 1 through May  6, 1993 a one-time  reorganization items gain of  $709
million,  which primarily consisted  of an $851 million  gain from recording the
Excess Reorganization Value pursuant to  fresh start accounting principles.  See
"Index  to Financial  Statements --  Predecessor Company  -- Notes  to Financial
Statements --  Reorganization  Items" note  for  additional information  on  the
reorganization items gain.

    Income  tax expense amounted to  $29 million in the  period of May 7 through
December 31, 1993  due to the  inability to benefit  the amortization of  Excess
Reorganization  Value.  Income tax  expense was  $17 million  for the  period of
January 1 through May 6, 1993 while  income tax benefits of $33 million and  $53
million  were recorded in 1992 and 1991, respectively. The income tax expense in
the period of January 1 through May 6, 1993 and the lower 1992 benefit  compared
to  1991 were primarily  due to the  inability to fully  benefit a net operating
loss carryforward  ("NOL Carryforward")  as  an offset  to deferred  taxes.  See
"Index  to Financial  Statements --  Notes to  Financial Statements  -- Taxes on
Income  and  Deferred  Income  Taxes"  notes  for  both  the  Restructured   and
Predecessor Companies for additional information on income taxes.

    Also  in connection with the Restructuring,  the Corporation recorded in the
period of January 1 through May 6, 1993 a one-time after-tax extraordinary  gain
of  $944 million. See  "Index to Financial Statements  -- Predecessor Company --
Notes to  Financial  Statements  --  Extraordinary  Gain"  note  for  additional
information  on the extraordinary gain. In the  period of May 7 through December
31, 1993,  the  Corporation recorded  an  after-tax extraordinary  loss  of  $21
million reflecting the write-off of reorganization discount associated with debt
issues  expected to be prepaid, redeemed or  purchased in 1994 with a portion of
the proceeds  from the  Offering and  the Note  Placement. See  "Purpose of  the
Offering  and Use  of Proceeds" for  additional information on  the Offering and
Note Placement.

    A one-time after-tax net  charge of $150 million  was recorded in the  first
quarter  of 1993 representing the cumulative impact  of the adoption of SFAS No.
106, "Employers' Accounting  for Postretirement Benefits  Other Than  Pensions,"
and  SFAS  No.  109, "Accounting  for  Income  Taxes." See  "Index  to Financial
Statements -- Predecessor Company -- Notes  to Financial Statements -- Taxes  on
Income  and  Deferred  Income  Taxes  and  Postretirement  Benefits"  notes  for
information related to these accounting changes.

    A net loss  of $129  million was  recorded in the  period of  May 7  through
December 31, 1993 after the aforementioned amortization of Excess Reorganization
Value  of $113 million and the after-tax  extraordinary loss of $21 million. Net
earnings of $1,434 million were recorded in the period of January 1 through  May
6,  1993,  reflecting the  reorganization  items gain  of  $709 million  and the
after-tax extraordinary gain  of $944 million.  Net losses of  $191 million  and
$161 million were recorded in 1992 and 1991, respectively, primarily due to high
levels  of  interest  expense. The  net  loss  in 1991  included  a  $20 million
after-tax provision relating to the sale of DAP Inc. ("DAP"), formerly a  wholly
owned  subsidiary of the Corporation. Results for DAP are reported separately as
discontinued operations  up  to  September  1991,  when  the  sale  of  DAP  was
completed.

LIQUIDITY AND CAPITAL RESOURCES

    On  May  6,  1993,  the  Corporation  completed  the  Restructuring  through
implementation of the Prepackaged Plan.  The provisions of the Prepackaged  Plan
were  agreed  upon in  principle with  all  committees and  certain institutions
representing  debt  subject   to  the   Restructuring  in   January  1993.   The

                                       28
<PAGE>
Corporation's Registration Statement (Registration No. 33-40136), which included
a Disclosure Statement and Proxy Statement -- Prospectus, was declared effective
by  the Securities  and Exchange  Commission (the  "SEC") in  February 1993. The
solicitation process  for approvals  of the  Prepackaged Plan  was completed  on
March  15, 1993. The  Corporation commenced a  prepackaged Chapter 11 bankruptcy
case in Delaware (IN RE: USG CORPORATION, Case No. 93-300) on March 17, 1993 and
received the U.S.  Bankruptcy Court's  confirmation of the  Prepackaged Plan  on
April  23, 1993. None of  the subsidiaries of the  Corporation were part of this
proceeding and  there was  no impact  on trade  creditors of  the  Corporation's
subsidiaries.  Under the Prepackaged Plan, all previously existing defaults were
waived or cured.

    In the  Restructuring,  the  Corporation (i)  converted  approximately  $1.4
billion  of  subordinated  debt  and  accrued  interest  into  Common  Stock and
Warrants, (ii) converted  approximately $300  million principal  amount of  bank
term  loan (the "Bank Term Loan") and $40 million of other obligations under the
Credit Agreement with a syndicate of commercial banks (the "Banks" or the  "Bank
Group")  into  Senior  2002  Notes  and (iii)  extended  the  maturities  of its
remaining Bank Debt and certain public debt. Further, modifications were made to
the Credit Agreement which resulted in, among other things, (i) the issuance  of
$56  million of notes  (the "Capitalized Interest Notes"  and, together with the
Bank Term Loan, the "Bank Debt") in exchange for an equal amount of accrued  but
unpaid  interest and  other obligations  and (ii)  modifications to  a revolving
credit facility (the "Revolving Credit  Facility"). See "The Restructuring"  and
"Index  to Financial  Statements --  Predecessor Company  -- Notes  to Financial
Statements  --  Financial  Restructuring"  for  additional  information  on  the
Restructuring.

    Subsequent  to the Restructuring, on August 10, 1993, the Corporation issued
an additional $138 million of Senior 2002 Notes in exchange for Bank Debt.  This
transaction  improved the  Corporation's financial flexibility  and responded to
strong market demand for the Senior 2002 Notes by replacing near-term maturities
of the Bank Debt with  the longer term notes.  Although issuance of these  notes
caused  a modest increase  in interest expense from  the level experienced since
the Restructuring was consummated,  it eliminated all  Bank Term Loan  scheduled
principal  payments  due  through  1996. Furthermore,  in  connection  with this
exchange, the  cash  sweep  mechanism  of the  Credit  Agreement  was  modified,
allowing  the  Corporation to  apply cash  otherwise subject  to the  cash sweep
through 1996 to repayment  or purchase of  senior debt. For  the holders of  the
Bank  Debt participating in the exchange,  the Senior 2002 Notes provide greater
yield and liquidity than  the Bank Debt. See  "The Restructuring" and "Index  to
Financial Statements -- Restructured Company -- Notes to Financial Statements --
Indebtedness" note for additional information on this transaction.

   
    On   January  7,  1994,  the  Corporation  filed  a  Registration  Statement
(Registration No. 33-51845), as amended on February 16, 1994, pertaining to  its
planned  public offering of 6,000,000  new shares of common  stock to be sold by
the Corporation and 4,000,000 shares of common stock to be sold by Water  Street
Corporate  Recovery Fund I, L.P. The numbers of shares were subsequently amended
to 7,000,000  new shares  of common  stock to  be sold  by the  Corporation  and
5,500,000  shares of common  stock to be  sold by Water  Street. The Offering is
part of a  refinancing strategy which  also includes (i)  the placement of  $150
million  principal  amount  of  Senior  2001  Notes  with  certain institutional
investors and (ii) certain amendments to the Corporation's Credit Agreement. The
amendments to the Credit Agreement will,  among other things, increase the  size
of the Corporation's revolving credit facility by $70 million and amend existing
mandatory  Bank Term Loan  prepayment provisions to  allow the Corporation, upon
the achievement of certain financial tests, to retain additional free cash  flow
for capital expenditures and the purchase of its public debt. Certain amendments
are contingent on the consummation of the Offering.
    

    On  February 17, 1994, the Corporation  completed the Note Placement of $150
million  principal  amount  of  Senior  2001  Notes.  In  such  placement,   the
Corporation  received in  exchange for the  Senior 2001  Notes approximately $30
million principal amount of Senior 1996  Notes, $35 million principal amount  of
Senior  1997 Notes and approximately  $85 million in cash,  of which $75 million
was used to prepay its Bank Term Loans in satisfaction of the scheduled  payment
of  $40 million for 1997 and in reduction of the scheduled payment for 1998 from
$100 million to $65 million.

                                       29
<PAGE>
   
    In addition to  the exchange  of notes  and payment  of Bank  Term Loans  in
connection  with the Note Placement as  described above, the Corporation expects
to use  a  portion  of  the  net  proceeds  from  the  Offering,  together  with
approximately $158 million of existing cash generated from operations, to pay up
to  an  additional $65  million  of Bank  Term Loans  and  to prepay,  redeem or
purchase approximately $195 million aggregate principal amount of certain  other
senior  debt  issues.  The remainder  of  the net  proceeds,  approximately $106
million, will be  available for  general corporate  purposes, including  capital
expenditures   for  cost  reduction,  capacity  improvement  and  future  growth
opportunities. See  "Purpose of  the  Offering and  Use  of Proceeds"  for  more
information on the Offering and Note Placement.
    

    The  Corporation believes that, as a result of the Restructuring, as well as
the subsequent exchange of  Senior 2002 Notes for  Bank Debt, the  Corporation's
cash  generated by operations and the estimated levels of liquidity available to
the Corporation will be sufficient to permit the Corporation to satisfy its debt
service requirements and other capital requirements for the foreseeable  future.
Upon  completion of  the Transactions,  the Corporation's  liquidity and capital
resources will be further  significantly strengthened. However, the  Corporation
is  subject to significant business, economic and competitive uncertainties that
are beyond  its  control. There  can  be  no assurance  that  the  Corporation's
financial  resources will be sufficient for  the Corporation to satisfy its debt
service obligations and other capital requirements under all circumstances.

WORKING CAPITAL

    As of  December  31, 1993,  working  capital (current  assets  less  current
liabilities) amounted to $121 million and the ratio of current assets to current
liabilities  was 1.24  to 1, versus  December 31, 1992  when current liabilities
exceeded current  assets by  $2.6 billion  and the  ratio of  current assets  to
current  liabilities was .21 to  1. From December 31,  1990 through May 6, 1993,
the Corporation had a deficit working capital position, primarily resulting from
the inclusion  of most  long-term  debt issues  in  current liabilities  due  to
various  defaults  upon certain  of the  debt issues.  Upon consummation  of the
Restructuring, all  previously  existing  defaults  were  waived  or  cured  and
long-term  debt included in current liabilities  was either exchanged for Common
Stock and  Warrants, reclassified  to long-term  debt or,  in the  case of  $140
million  of the Revolving  Credit Facility, repaid.  See "The Restructuring" and
"Index to  Financial Statements  -- Predecessor  Company --  Notes to  Financial
Statements  -- Financial Restructuring" note  for additional information related
to the Restructuring.

    For the period of May 7 through December 31, 1993, cash and cash equivalents
increased $162 million as cash flows  from operating activities of $183  million
were  partially offset by a net repayment of debt of $21 million. As of December
31, 1993, $158 million of long-term debt was reclassified to currently  maturing
long-term  debt due to  the cash sweep  mechanism of the  Credit Agreement. This
cash sweep mechanism  requires prepayment  of long-term  debt in  1994. For  the
period  of January 1 through May 6, 1993, cash and cash equivalents decreased by
$131  million,  primarily  due  to  debt  repayments  in  connection  with   the
Restructuring.

    Comparing  December  31,  1993  balances  with  December  31,  1992, accrued
expenses of $208 million were down $345 million, or 62.4%, primarily due to  the
cancellation  and discharge  of $375 million  of accrued  interest in connection
with the Restructuring. Inventories  of $145 million  increased $32 million,  or
28.3%, primarily due to their revaluation as a result of fresh start accounting.
Accounts  receivable  (net)  of $264  million  declined $35  million,  or 11.7%,
reflecting a decline in miscellaneous corporate receivables, partially offset by
an increase of $26 million  in customer receivables due  to the higher level  of
net  sales. Accounts payable of $104 million  rose $13 million, or 14.3%, due to
the increased level of business and improved trade credit.

CAPITAL EXPENDITURES

    Capital expenditures amounted to $29 million in the period of May 7  through
December 31, 1993 and $12 million in the period of January 1 through May 6, 1993
for a total of $41 million in the year ended December 31, 1993. In 1992, capital
expenditures   were  $49  million.  Capital   expenditure  commitments  for  the
replacement, modernization and expansion of  operations amounted to $11  million
as  of December 31, 1993, compared with $24 million as of December 31, 1992. The
Credit Agreement restricts,

                                       30
<PAGE>
among  other things, capital expenditures  above certain levels. The Corporation
believes that  these  permitted levels  are  adequate. In  connection  with  the
planned  Offering  and Note  Placement, the  Credit  Agreement will  be amended,
allowing the Corporation to retain additional cash flow for capital expenditures
and other uses. Upon completion of the Transactions, the Corporation intends  to
augment  its  capital  spending program  on  a  basis consistent  with  such new
amendment.  See  "Purpose  of  the  Offering  and  Use  of  Proceeds"  for  more
information on the Offering and Note Placement.

LITIGATION

    One  of  the  Corporation's subsidiaries,  U.S.  Gypsum, is  a  defendant in
asbestos lawsuits  alleging  both  property damage  and  personal  injury.  This
litigation  has  not had  a material  effect on  the Corporation's  liquidity or
earnings. Virtually all  costs of the  Personal Injury Cases  are being paid  by
insurance.  However,  many  of  U.S.  Gypsum's  insurance  carriers  are denying
coverage for  the Property  Damage  Cases, although  U.S. Gypsum  believes  that
substantial coverage exists and the trial court in U.S. Gypsum's Coverage Action
has  so ruled (such ruling has been  appealed). In view of the limited insurance
funding currently available to U.S.  Gypsum for Property Damage Cases  resulting
from  continued resistance  by a number  of U.S. Gypsum's  insurers to providing
coverage, the effect of the asbestos  litigation on the Corporation will  depend
upon a variety of factors, including the damages sought in Property Damage Cases
that  reach trial prior to the completion  of the Coverage Action, U.S. Gypsum's
ability to successfully defend or settle  such cases, and the resolution of  the
Coverage  Action.  As a  result, management  is unable  to determine  whether an
adverse outcome in the asbestos litigation  will have a material adverse  effect
on  the  results of  operations or  the consolidated  financial position  of the
Corporation.

    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  earnings or  consolidated  financial
position.  See "Business -- General Information -- Asbestos Litigation" for more
information on legal proceedings.

                                    BUSINESS

INTRODUCTION

    Through  its  subsidiaries,  USG  is  a  leading  manufacturer  of  building
materials  in North America which  produces a wide range  of products for use in
residential and nonresidential construction, repair  and remodeling, as well  as
products  used  in  certain industrial  processes.  U.S. Gypsum  is  the largest
producer  of  gypsum  wallboard   in  the  United   States  and  accounted   for
approximately  one-third of total  domestic gypsum wallboard  sales in 1993. USG
Interiors is a  leading supplier of  interior ceiling, wall  and floor  products
used  primarily  in  commercial applications.  In  1993, USG  Interiors  was the
largest producer of ceiling grid and the second largest producer of ceiling tile
in the United States, accounting  for over one-half and approximately  one-third
of  total  domestic sales  of  such products,  respectively.  L&W Supply  is the
largest distributor of wallboard and related  products in the United States  and
in  1993 distributed approximately 22% of U.S. Gypsum's wallboard production. In
addition  to  its  United  States   operations,  the  Corporation's  76%   owned
subsidiary,  CGC,  is the  largest manufacturer  of  gypsum products  in eastern
Canada and the  Corporation's USG International  unit supplies interior  systems
and  gypsum wallboard products in the Pacific,  Europe and Latin America. In the
year ended December 31,  1993, the Corporation had  net sales of $1,916  million
and generated EBITDA of $218 million.

    The  Corporation believes that  its leading industry  positions and low cost
structure position it to take advantage of the long-term potential in its  three
industry  segments:  Gypsum  Products, Interior  Systems  and  Building Products
Distribution.

                                       31
<PAGE>
U.S. INDUSTRY OVERVIEW

    USG's consolidated financial performance is largely influenced by changes in
the three major components  of the construction industry  in the United  States:
new  residential construction,  new nonresidential construction,  and repair and
remodel  activity.   In  recent   years,  structural   changes  in   residential
construction  activity combined with growth in  the repair and remodel component
have partially mitigated the  impact of the cyclical  demand of the overall  new
construction components.

NEW RESIDENTIAL AND NONRESIDENTIAL CONSTRUCTION

    Demand  for  the  Corporation's products  has  historically  been influenced
primarily by new residential (single and multi-family homes) and  nonresidential
(offices,  schools, stores,  and other  institutions) construction. Construction
activity is directly influenced by a variety of economic variables. In the short
term, the  new  residential segment  is  characterized by  fluctuating  activity
levels  as builders  and buyers  respond to changes  in funding  costs, new home
prices, and the availability of new  construction financing. Over the medium  to
long  term, new residential construction  activity reflects the demand generated
by household formations, the home ownership rate, removals of housing stock, and
the growth of personal income.

    Although new residential construction remains  the largest single source  of
demand  for gypsum wallboard in the United States, it has declined significantly
as a percentage of  gypsum wallboard demand  since 1986 (a  year in which  total
gypsum   wallboard  shipments  were  comparable  to  1993  levels).  Residential
construction has a nominal impact on demand for Interiors Systems products.  The
following  table sets forth demand for gypsum  wallboard in the United States by
end-use segment as estimated  by U.S. Gypsum based  on publicly available  data,
internal  surveys and data from the Gypsum Association, an industry trade group.
Management estimates  that the  distribution of  U.S. Gypsum's  sales volume  to
these four end-use segments is generally proportional to industry demand.

<TABLE>
<CAPTION>
                                                                                   1993       1986
                                                                                 ---------  ---------
<S>                                                                              <C>        <C>
Residential construction.......................................................         48%        54%
Nonresidential construction....................................................          9         10
Repair and remodel.............................................................         36         30
Export/other...................................................................          7          6
</TABLE>

    Over  recent economic cycles, demand for gypsum wallboard has been favorably
impacted by a shift toward more single family housing within the new residential
construction segment and an increase in the average single family home size. New
single family  homes,  which  typically  require  twice  as  much  wallboard  as
multi-family  homes,  accounted for  87%  of total  housing  starts in  1993, as
compared to 65%  in 1986. Additionally,  the size of  the average single  family
home  in the United States  increased approximately 15% to  2,095 square feet in
1992 from 1,825  square feet  in 1986.  Largely as  a result  of these  factors,
United  States industry shipments  of gypsum wallboard  were 21.6 billion square
feet in 1993, as compared  to 21.3 billion in  1986, despite an approximate  28%
decline  in the number of  housing starts from 1.8 million  units in 1986 to 1.3
million units in 1993, as depicted in the following chart.

                                       32
<PAGE>
                      GYPSUM WALLBOARD INDUSTRY SHIPMENTS
                            AND TOTAL HOUSING STARTS

                                     [GRAPHIC]

<TABLE>
<CAPTION>
                                1982   1983   1984   1985   1986   1987   1988   1989   1990   1991   1992   1993
                                -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----  -----
<S>                             <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Gypsum Wallboard Industry
  Shipments, in billions of
  square feet                    13.3   17.1   19.2   20.2   21.3   21.4   21.3   21.3   20.7   18.4   20.3   21.6
Housing Starts, in thousands
  of units                      1,062  1,703  1,750  1,742  1,805  1,621  1,488  1,376  1,193  1,014  1,200  1,285
<FN>
    SOURCES: HOUSING STARTS ARE  BASED ON DATA PUBLISHED  BY THE U.S. BUREAU  OF
             THE  CENSUS. GYPSUM WALLBOARD INDUSTRY  SHIPMENTS ARE BASED ON DATA
             PUBLISHED BY THE GYPSUM ASSOCIATION.
</TABLE>

    Nonresidential construction  responds less  quickly to  changes in  interest
rates  than  residential construction  because  long-term financing  is normally
arranged in  advance of  the commencement  of major  building projects.  In  the
longer  term, nonresidential construction  activity levels are  also affected by
the general  rate  of  economic  growth,  the rate  of  new  job  formation  and
population shifts. Continued weakness in the nonresidential construction segment
has negatively impacted demand for the products manufactured by both U.S. Gypsum
and  USG Interiors. Demand for USG Interiors' products is particularly dependent
on  new  nonresidential   construction  activity.   Management  estimates   that
approximately   one-half  of  USG   Interiors'  1993  sales   were  in  the  new
nonresidential construction segment as  compared to approximately two-thirds  in
1986.  In  recent years,  nonresidential construction  demand has  accounted for
approximately 10% of gypsum wallboard industry demand in the United States.

REPAIR AND REMODEL

    Based on data published by  the U.S. Bureau of The  Census, the size of  the
total  residential repair and remodel  market grew to $104  billion in 1992 from
$91 billion in  1986 and $46  billion in 1980.  Although data on  nonresidential
repair  and remodel activity is not  readily available, management believes that
this segment grew significantly during the  1980s. The growth of the repair  and
remodel  market is primarily  due to the  aging of housing  stock, remodeling of
existing buildings and tenant  turnover in commercial space.  The median age  of
housing stock was 27 years in 1990, and the National Association of Homebuilders
forecasts  that the  median age  will increase to  32 years  by 2000. Management
believes that the continued  aging of housing stock  will contribute to  further
growth  in the repair and remodel segment. In addition, management believes that
the increase in  the number of  commercial buildings over  the last decade  will
provide  a greater  base for nonresidential  repair and remodel  activity in the
future, as building owners or tenants replace ceiling, wall and floor systems as
part of the tenant turnover process. Demand in the repair and remodel  component
tends  to be more  stable than in  new construction, although  it does fluctuate
somewhat in response to general economic conditions.

    Management estimates that repair and remodel demand for gypsum wallboard has
increased more than  22% since 1986  and, in  1993, accounted for  36% of  total
demand  for gypsum  wallboard in  the United  States. Management  estimates that
approximately one-half of USG Interiors'  1993 sales were to the  nonresidential
repair and remodel segment.

                                       33
<PAGE>
GYPSUM PRODUCTS

BUSINESS

    The  Gypsum Products segment consists primarily  of the gypsum operations of
U.S. Gypsum in the United States, CGC in Canada and USG International in Mexico.

    CGC is  the largest  manufacturer  of gypsum  wallboard in  eastern  Canada.
Management  estimates  that  industry  sales in  eastern  Canada,  including the
Toronto and Montreal metropolitan  areas, represent approximately two-thirds  of
total  Canadian sales  volume. In 1993,  CGC accounted for  approximately 45% of
industry sales in eastern Canada.

PRODUCTS

    The Gypsum Products segment manufactures and markets building and industrial
products used in a  variety of applications. Gypsum  panel products are used  to
finish  the interior  walls and ceilings  in residential,  commercial and mobile
home construction. These products  provide aesthetic as well  as sound and  fire
retarding  value. The majority of these  products are sold under the "SHEETROCK"
brand name.  Also sold  under the  "SHEETROCK" brand  name is  a line  of  joint
compounds used for finishing wallboard joints. The "DUROCK" line of cement board
and accessories is produced to provide fire-resistant and water damage resistant
assemblies  for both  interior and  exterior construction.  The Corporation also
produces a  variety of  plaster products  used to  provide a  custom finish  for
residential  and commercial  interiors. Like "SHEETROCK"  brand wallboard, these
products provide aesthetic and sound and fire retarding value. Plaster  products
are sold under the trade names of "RED TOP,"
"IMPERIAL"  and "DIAMOND."  The Corporation also  produces gypsum-based products
sold  to  agricultural  and  industrial  customers  for  use  in  a  number   of
applications,   including  soil  conditioning,  road  repair,  fireproofing  and
ceramics.

FINANCIAL PERFORMANCE

    Summary financial results of the Gypsum Products segment are outlined in the
table below. Such results are  not adjusted for intersegment sales  eliminations
and corporate expenses. Operating profit in 1993 for the Gypsum Products segment
is  not comparable to prior years due to $51 million of non-cash amortization of
Excess Reorganization Value.

<TABLE>
<CAPTION>
                                                      YEARS ENDED DECEMBER 31,
                                ---------------------------------------------------------------------
                                  1993        1992        1991        1990        1989        1988
                                ---------   ---------   ---------   ---------   ---------   ---------
                                                        (DOLLARS IN MILLIONS)
<S>                             <C>         <C>         <C>         <C>         <C>         <C>
Net sales.....................     $1,165      $1,068      $1,011      $1,134      $1,263      $1,367
Operating profit..............         90          85          93         148         227         266
EBITDA........................        179         123         131         194         266         307
EBITDA margin.................       15.4%       11.5%       13.0%       17.1%       21.1%       22.5%
Capital expenditures..........         30          31          25          25          41          60
</TABLE>

    See "Selected Consolidated  Financial Data." For  additional information  on
the  Corporation's  results by  industry  segment, including  intersegment sales
eliminations and corporate expenses, see "Index to Financial Statements -- Notes
to Financial Statements -- Geographic and Industry Segments."

MANUFACTURING

    Gypsum and related  products are produced  by the Corporation  at 42  plants
located  throughout the United States, Eastern Canada and in central Mexico. The
Corporation believes  several  factors contribute  to  its low  delivered  cost,
including  (i) the  vertical integration  of its  key raw  materials (gypsum and
paper); (ii)  the technical  expertise provided  by its  extensive research  and
development efforts and its experienced employees and (iii) the proximity of its
plants to major metropolitan areas.

    USG's vertically integrated gypsum and paper operations provide several cost
and  quality advantages. Since the Corporation  obtains substantially all of its
gypsum requirements  from its  own quarries  and mines,  it controls  the  cost,
quality  and  continuity of  its supply.  These factors  are vital  to producing
wallboard of  a consistently  high  quality at  a  low cost.  The  Corporation's
geologists estimate that

                                       34
<PAGE>
recoverable  rock reserves  are sufficient for  more than 30  years of operation
based on the Corporation's average annual production of crude gypsum during  the
past  five years.  Proven reserves  contain approximately  243 million  tons, of
which approximately 69%  are located  in the United  States and  31% in  Canada.
Additional  reserves of approximately 153 million tons exist on three properties
not in operation.  The Corporation's  total average annual  production of  crude
gypsum  in  the United  States and  Canada during  the past  five years  was 9.4
million tons.

    USG owns and  operates seven modern  paper mills located  across the  United
States  for efficient  distribution of paper  to virtually all  of its wallboard
plants. These mills  have sufficient capacity  to satisfy virtually  all of  the
Corporation's  expected paper needs for the  foreseeable future. All these mills
presently are  designed to  produce paper  utilizing 100%  recycled waste  paper
fiber  as  opposed to  more costly  virgin pulp.  Vertical integration  in paper
ensures a  continuous supply  of high  quality  paper that  is tailored  to  the
specific needs of USG's wallboard production processes.

    As  the  leading producer  of gypsum  products  for over  90 years,  USG has
developed extensive knowledge  of gypsum and  the processes used  in making  its
products.  Combined with USG's experienced work force, USG's technical expertise
provides significant cost  efficiencies in the  production of existing  products
and  development of new ones. USG maintains the largest research and development
facility in the gypsum  industry in Libertyville,  Illinois which conducts  fire
and  structural  testing  and  product  and  process  development.  Research and
development activities involve  technology related to  gypsum, cellulosic  fiber
and  cement as the  primary raw materials  on which panel  products and systems,
such as gypsum board and cement board, are based. Related technologies are those
pertaining to joint  compounds and textures  for wallboard finishing,  specialty
plaster products for both construction and industrial applications, coatings and
latex polymers.

    The  number and location of the Corporation's gypsum plants enhance its cost
position by  minimizing  the distance  and  the transportation  costs  to  major
metropolitan  areas. Transportation  costs can  be a  significant part  of total
delivered cost of gypsum products.

MARKETING AND DISTRIBUTION

    Distribution is carried  out through L&W  Supply's 131 distribution  centers
located  in  34  states, as  well  as  mass merchandisers  and  other retailers,
building  material  dealers,  contractors  and  distributors.  Sales  of  gypsum
products are seasonal to the extent that sales are generally greater from spring
through the middle of autumn than during the remaining part of the year.

COMPETITION

    The  Corporation competes in North America as the largest of 18 producers of
gypsum wallboard products and, in 1993, accounted for approximately one-third of
total gypsum  wallboard sales  in  the United  States.  In 1993,  U.S.  Gypsum's
shipments  of gypsum wallboard  totaled 7.3 billion square  feet, the highest in
the Corporation's history,  compared with total  domestic industry shipments  of
21.6  billion square feet which is also a record level. Principal competitors in
the United States are:  National Gypsum Company, which  emerged from Chapter  11
bankruptcy  in  July 1993,  The Celotex  Corporation,  which has  operated under
Chapter 11  of the  Bankruptcy Code  since 1990,  Domtar, Inc.,  Georgia-Pacific
Corporation  and several smaller, regional competitors. Major competitors of CGC
in Eastern Canada include Domtar, Inc. and Westroc Industries Ltd.

INTERIOR SYSTEMS

BUSINESS

    The Interior Systems segment consists of USG Interiors in the United States,
USG International in Europe, the Pacific and Latin America and CGC in Canada.

    The Corporation has increased its emphasis on the interior systems  business
since  1986 when Donn  Inc. ("Donn"), a  manufacturer of ceiling  grid and other
interior  products,  was  acquired.   Already  second  behind  Armstrong   World
Industries,   Inc.  in  the  ceiling  tile   market,  the  acquisition  of  Donn

                                       35
<PAGE>
positioned the Corporation as the worldwide leader in ceiling suspension systems
and the only company  to offer complete  pre-designed, pre-engineered and  fully
integrated  ceiling systems.  With the  acquisition of  Donn, USG  Interiors was
established as a separate subsidiary to  combine the operations of Donn and  USG
Acoustical Products Company, formerly part of U.S. Gypsum and a leading producer
of mineral fiber ceiling products.

    USG's  international position  was enhanced  in late  1987 when  it began to
export ceiling tile to Europe to complement Donn's established grid business and
to capitalize  on  the  strength  of  its  existing  distribution  channels.  By
combining  ceiling tile and  grid as a system  for distributors and contractors,
USG has used its leading position in grid to advance sales of ceiling tile. As a
result, management  estimates that  USG's  share of  the European  ceiling  tile
market  has grown to  approximately 8%. International  sales are managed through
USG International on  a regional  basis consisting  of Europe,  the Pacific  and
Latin America.

    CGC manufactures and markets ceiling products and wall and floor systems and
accounted  for over one-half of  Canadian grid sales in  1993. CGC is the second
largest marketer of ceiling tile  in Canada, behind Armstrong World  Industries,
Inc.,  and accounted for approximately 30% of Canadian sales of such products in
1993. CGC markets ceiling tile produced by USG Interiors.

PRODUCTS

    The Interior  Systems segment  manufactures and  markets ceiling  suspension
systems  ("grid")  and  ceiling tile,  access  floor systems,  wall  systems and
mineral wool insulation  and soundproofing  products. USG's  integrated line  of
ceiling  products provides qualities such as sound absorption, fire retardation,
and convenient  access  to  the  space above  the  ceiling  for  electrical  and
mechanical  systems, air distribution and  maintenance. The Corporation believes
its  ability  to  provide  custom-designed  and  specially  fabricated   ceiling
solutions  to meet specific  job design installation  conditions is increasingly
attractive  to  architects,  designers  and  building  owners.  USG   Interiors'
significant trade names include the "ACOUSTONE" and "AURATONE" brands of ceiling
tile and the "DX," "FINELINE," "CENTRICITEE" and "DONN" brands of ceiling grid.

    USG's  wall systems provide the  versatility of an open  floor plan with the
privacy of floor-to-ceiling partitions which are compatible with leading  office
equipment  and  furniture systems.  Wall systems  are  designed to  be installed
quickly and reconfigured easily. In addition, USG manufactures a line of  access
floor  systems  that  permit  easy  access  to  wires  and  cables  for repairs,
modifications, and upgrading of electrical and communication networks as well as
convenient movement of furniture and equipment.

FINANCIAL PERFORMANCE

    Summary financial results for the  Interior Systems segment are outlined  in
the   table  below.  Such  results  are  not  adjusted  for  intersegment  sales
eliminations and corporate expenses.  Operating profit/ (loss)  in 1993 for  the
Interior  Systems segment is not comparable to prior years due to $60 million of
non-cash amortization of Excess Reorganization Value.

<TABLE>
<CAPTION>
                                                      YEARS ENDED DECEMBER 31,
                                ---------------------------------------------------------------------
                                  1993        1992        1991        1990        1989        1988
                                ---------   ---------   ---------   ---------   ---------   ---------
                                                        (DOLLARS IN MILLIONS)
<S>                             <C>         <C>         <C>         <C>         <C>         <C>
Net sales.....................       $550        $548        $576        $624        $610        $599
Operating profit/(loss).......        (17)         41          62          78          89          83
EBITDA........................         57          59          78          98         105          98
EBITDA margin.................       10.4%       10.8%       13.5%       15.7%       17.2%       16.4%
Capital expenditures..........          9          14          22          37          33          17
</TABLE>

    See "Selected Consolidated  Financial Data." For  additional information  on
the  Corporation's  results by  industry  segment, including  intersegment sales
eliminations and corporate expenses, see "Index to Financial Statements -- Notes
to Financial Statements -- Geographic and Industry Segments."

                                       36
<PAGE>
MANUFACTURING

    Interior Systems products  are manufactured  at 16  plants throughout  North
America,  including  5  ceiling  tile  plants and  4  ceiling  grid  plants. The
remaining plants produce other interior  products and raw materials for  ceiling
tile  and  grid. Principal  raw  materials used  in  the production  of Interior
Systems  products  include  mineral   fiber,  steel,  aluminum  extrusions   and
high-pressure laminates. Certain of these raw materials are produced internally,
while  others  are obtained  from various  outside  suppliers. Shortages  of raw
materials used in this segment are not expected.

    USG Interiors maintains its own  research and development facility in  Avon,
Ohio,  which  provides  product  design,  engineering  and  testing  services in
addition to manufacturing development, primarily in metal forming, with tool and
machine design and construction services. Additional research and development is
carried  out  at   the  Corporation's   research  and   development  center   in
Libertyville, Illinois and at its "Solutions Center"-SM- in Chicago.

MARKETING AND DISTRIBUTION

    Interiors  Systems products are sold primarily in markets related to the new
construction and renovation of commercial buildings as well as the retail market
for small commercial contractors. Marketing and distribution to large commercial
users  is  conducted  through  a   network  of  distributors  and   installation
contractors  as  well as  through L&W  Supply and  is oriented  toward providing
integrated  interior  systems  at  competitive  price  levels.  The  Corporation
emphasizes  educational and promotional materials designed to influence decision
makers who  play a  significant role  in choosing  material suppliers,  such  as
interior  designers,  contractors  and  facility  managers.  To  this  end,  USG
Interiors maintains  the "Solutions  Center"-SM- located  adjacent to  Chicago's
Merchandise  Mart which  is used for  product displays,  educational seminars on
products  and  new  product  design  and  development.  In  recent  years,   the
Corporation  has increased its emphasis on the retail market and as a result now
sells its products to  seven of the ten  largest building products retailers  in
the United States.

COMPETITION

    The  Corporation estimates  that it is  the world's  largest manufacturer of
ceiling suspension systems  with approximately  40% of worldwide  sales of  such
products.  USG's most  significant competitor  is Chicago  Metallic Corporation,
which participates  in  the U.S.  and  European markets.  Other  competitors  in
ceiling  grid include W.A.V.E.  (a joint venture  of Armstrong World Industries,
Inc. and National Rolling Mills). The Corporation estimates that it accounts for
approximately one-third of sales of acoustical ceiling tile to the U.S.  market.
Principal  global  competitors  include Armstrong  World  Industries,  Inc. (the
largest manufacturer), Odenwald of West Germany and the Celotex Corporation.

BUILDING PRODUCTS DISTRIBUTION

BUSINESS

    The Building Products Distribution segment consists of the operations of the
Corporation's L&W Supply subsidiary.  L&W Supply is  the largest distributor  of
gypsum   wallboard   and   related  building   products   for   residential  and
nonresidential  construction  in  the  United  States.  L&W  Supply  distributes
approximately  9%  of  all  gypsum wallboard  in  the  United  States (including
approximately 22% of U.S. Gypsum's wallboard production). Wallboard accounts for
approximately 47% of L&W Supply's total net sales.

    Although L&W Supply specializes in  distribution of gypsum wallboard,  joint
compound  and  other products  manufactured primarily  by  U.S. Gypsum,  it also
distributes USG Interiors' products such as acoustical ceiling tile and  ceiling
grid  and products of other  manufacturers, including drywall metal, insulation,
roofing products and accessories.

    L&W Supply was  founded in 1971  by U.S. Gypsum  to address what  management
perceived  as a  growing demand in  the construction industry  for a specialized
delivery service for construction  materials, especially gypsum wallboard.  U.S.
Gypsum management believed the construction industry could

                                       37
<PAGE>
benefit  from  a  service-oriented  organization that  would  deliver  less than
truckload quantities of construction materials to  a job site and place them  in
the  areas where the  work was being  done, thereby reducing  or eliminating the
need  for  handling  by  contractors.  To  perform  this  service,  U.S.  Gypsum
established  a  number of  distribution  centers that  could  stock construction
materials and be  able to deliver  relatively large quantities  with short  lead
times.

    L&W  Supply has grown significantly  over the past 23  years and now has 131
distribution centers located in 34 states.

FINANCIAL PERFORMANCE

    Summary financial results for the Building Products Distribution segment are
outlined in  the  table below.  Such  results  are not  adjusted  for  corporate
expenses.  There  are  no  intersegment  sales  eliminations  for  this segment.
Operating profit in 1993 for the  Building Products Distribution segment is  not
comparable  to prior years due to $2  million of non-cash amortization of Excess
Reorganization Value.

<TABLE>
<CAPTION>
                                                      YEARS ENDED DECEMBER 31,
                                ---------------------------------------------------------------------
                                  1993        1992        1991        1990        1989        1988
                                ---------   ---------   ---------   ---------   ---------   ---------
                                                        (DOLLARS IN MILLIONS)
<S>                             <C>         <C>         <C>         <C>         <C>         <C>
Net sales.....................       $528        $464        $424        $478        $485        $483
Operating profit..............          3           3          --           4           7          12
EBITDA........................          7           5           4          12          16          23
EBITDA margin.................        1.3%        1.1%        0.9%        2.5%        3.3%        4.8%
Capital expenditures..........          2           3           1           1           1           3
</TABLE>

    See "Selected Consolidated  Financial Data." For  additional information  on
the  Corporation's  results by  industry  segment, including  intersegment sales
eliminations and corporate expenses, see "Index to Financial Statements -- Notes
to Financial Statements -- Geographic and Industry Segments."

DISTRIBUTION CENTERS

    L&W Supply leases approximately  80% of its  facilities from third  parties,
which  management believes  provides it with  the flexibility to  enter and exit
fluctuating market areas. Usually, initial leases  are from three to five  years
with a five-year renewal option. Facilities are located in virtually every major
metropolitan area in the United States.

    A  typical  L&W  Supply facility  has  approximately 12,000  square  feet of
warehouse space, 1,500 square feet of office  space and is located on 1.5  paved
acres  of land  in prime industrial  areas with good  interstate highway access.
Each center is equipped with  at least one flatbed truck,  a boom truck and,  in
some  cases, a  towable forklift. Boom  trucks are standard  flatbed trucks with
telescoping hydraulic booms  installed on the  front of the  truckbed. By  using
either  the telescoping boom  or the towable forklift,  L&W Supply employees are
able to place wallboard, joint compound and other materials in various locations
on a job site.

COMPETITION

    L&W Supply's closest competitor, Gypsum Management Supply, is an independent
distributor with approximately 70 locations in the southern, central and western
United States. There are  several regional competitors,  such as Gypsum  Drywall
Management Association in the southern United States and Strober Building Supply
in  the northeastern United States. L&W  Supply's many local competitors include
lumber dealers, hardware stores,  mass merchandisers, home improvement  centers,
acoustical tile distributors and manufacturers.

    Sales  are seasonal to the extent that  sales are generally greater from the
middle of spring through the middle of autumn than during the remaining part  of
the year.

                                       38
<PAGE>
PROPERTIES OF THE CORPORATION

    The  Corporation's  plants,  mines,  transport  ships,  quarries  and  other
facilities are  located in  North America,  Europe, Australia,  New Zealand  and
Malaysia.  Many of these facilities are operating  at or near full capacity. All
facilities and equipment are  in good operating  condition and, in  management's
judgment,  sufficient expenditures have been made annually to maintain them. The
locations of  the  production  properties  of  the  Corporation's  subsidiaries,
grouped  by industry segment, are as  follows (plants are owned unless otherwise
indicated):

GYPSUM PRODUCTS

    Gypsum Board and Other Gypsum Products

<TABLE>
<CAPTION>
                  UNITED STATES
           ---------------------------
<C>        <S>
  (*)(**)  Baltimore, Maryland
        *  Boston (Charlestown),
           Massachusetts
        *  Detroit (River Rouge),
           Michigan
       **  East Chicago, Indiana
           Empire, Nevada
           Fort Dodge, Iowa
        *  Fremont, California
  (*)(**)  Galena Park, Texas
        *  Gypsum, Ohio
        *  Jacksonville, Florida
  (*)(**)  New Orleans, Louisiana
        *  Norfolk, Virginia
           Oakfield, New York
           Plaster City, California
           Plasterco (Saltville),
           Virginia
        *  Santa Fe Springs,
           California
           Shoals, Indiana
           Sigurd, Utah
           Southard, Oklahoma
           Sperry, Iowa
        *  Stony Point, New York
           Sweetwater, Texas
           CANADA
           ---------------------------
           Hagersville, Ontario
        *  Montreal, Quebec
        *  St. Jerome, Quebec
           MEXICO
           ---------------------------
      ***  Puebla, Puebla
</TABLE>

    Gypsum plants utilize locally mined or quarried gypsum rock unless noted  as
follows:

      * These  plants use  rock from  quarry operations  at Alabaster, Michigan;
        Empire, Nevada; Plaster City, California; Little Narrows and/or Windsor,
        Nova Scotia; or Harbour Head, Jamaica, an outside source.

     ** These plants purchase synthetic gypsum from outside sources.

    *** This plant purchases all rock from outside sources.

    Joint Compound

    Surface preparation  and joint  treatment products  are produced  in  plants
located  at Chamblee, Georgia; Dallas, Texas; East Chicago, Indiana; Fort Dodge,
Iowa; Gypsum, Ohio;  Jacksonville, Florida; Port  Reading, New Jersey  (leased);
Sigurd,  Utah; Tacoma,  Washington (leased);  Torrance, California; Hagersville,
Ontario,  Canada;  Montreal,  Quebec,  Canada;  Puebla,  Mexico;  and  Selangor,
Malaysia (leased).

    Paper

    Paper  for gypsum board  is manufactured at Clark,  New Jersey; Galena Park,
Texas;  Gypsum,  Ohio;  Jacksonville,  Florida;  North  Kansas  City,  Missouri;
Oakfield, New York; and South Gate, California.

    Ocean Vessels

    Gypsum Transportation Limited, a wholly owned subsidiary of the Corporation,
headquartered  in Bermuda,  owns and  operates a  fleet of  three self-unloading
ocean vessels. Under contract of  affreightment, these vessels haul gypsum  rock
from  Nova Scotia to the East Coast and  Gulf port plants of U.S. Gypsum. Excess
ship time, when available, is offered for charter on the open market.

                                       39
<PAGE>
    Miscellaneous

    A mica-processing plant is located  at Spruce Pine, North Carolina;  perlite
ore  is  produced  at  Grants,  New  Mexico.  Metal  lath,  plaster  and drywall
accessories and light gauge steel  framing products are manufactured at  Puebla,
Mexico.  Metal safety grating products  are manufactured at Burlington, Ontario,
Canada (leased); and  Delta, British  Columbia, Canada  (leased). Various  other
building  products are manufactured at La Mirada, California (adhesives) and New
Orleans, Louisiana (lime products).

INTERIOR SYSTEMS

    Ceiling Tile

    Acoustical ceiling tile and panels  are manufactured at Cloquet,  Minnesota;
Greenville, Mississippi; Gypsum, Ohio; Walworth, Wisconsin; San Juan Ixhautepec,
Mexico; and Aubange, Belgium.

    Ceiling Grid

    Ceiling  grid products are manufactured  at Cartersville, Georgia; Stockton,
California; Westlake,  Ohio;  Auckland,  New Zealand  (leased);  Dreux,  France;
Oakville,  Ontario,  Canada;  Peterlee,  England  (leased);  Selangor,  Malaysia
(leased); and Viersen,  Germany. A  coil coater and  slitter plant  used in  the
production of ceiling grid is also located in Westlake, Ohio.

    Access Floor Systems

    Access  floor systems products  are manufactured at  Red Lion, Pennsylvania;
Dreux, France; Peterlee, England (leased); and Selangor, Malaysia (leased).

    Mineral Wool

    Mineral wool products are manufactured at Birmingham, Alabama; Gypsum, Ohio;
Red Wing, Minnesota; Tacoma,  Washington; Wabash, Indiana; Walworth,  Wisconsin;
and Weston, Ontario, Canada.

    Wall Systems

    Wall system products are manufactured at Medina, Ohio (leased).

GENERAL INFORMATION

ASBESTOS LITIGATION

    One  of  the  Corporation's  subsidiaries, U.S.  Gypsum,  is  among numerous
defendants  in   lawsuits  arising   out  of   the  manufacture   and  sale   of
asbestos-containing    building    materials.   U.S.    Gypsum    sold   certain
asbestos-containing products beginning in the 1930's; in most cases the products
were discontinued or asbestos was removed from the product formula by 1972,  and
no  asbestos-containing products  were sold after  1977. Some  of these lawsuits
seek to  recover compensatory  and  in many  cases  punitive damages  for  costs
associated  with maintenance or  removal and replacement  of products containing
asbestos (the "Property Damage  Cases"). Others of these  suits seek to  recover
compensatory  and in many  cases punitive damages  for personal injury allegedly
resulting from  exposure  to  asbestos  and  asbestos-containing  products  (the
"Personal  Injury Cases"). It is anticipated that additional personal injury and
property damage cases containing similar allegations will be filed.

    As discussed below, U.S. Gypsum has substantial personal injury and property
damage insurance for  the years involved  in the asbestos  litigation. Prior  to
1985,  when  an asbestos  exclusion was  added to  U.S. Gypsum's  policies, U.S.
Gypsum purchased  comprehensive general  liability insurance  policies  covering
personal injury and property damage in an aggregate face amount of approximately
$850  million. Insurers that issued approximately $106 million of these policies
are  presently  insolvent.  After  deducting  insolvencies  and  exhaustion   of
policies, approximately $625 million of insurance remains potentially available.
Because  U.S. Gypsum's insurance carriers initially  responded to its claims for
defense and indemnification with various  theories denying or limiting  coverage
and  the  applicability  of  their policies,  U.S.  Gypsum  filed  a declaratory
judgment   action    against   them    in   the    Circuit   Court    of    Cook

                                       40
<PAGE>
County,  Illinois on  December 29, 1983.  (U.S. GYPSUM CO.  v. ADMIRAL INSURANCE
CO., ET AL.) (the "Coverage Action"). U.S. Gypsum alleges in the Coverage Action
that the carriers are obligated  to provide indemnification for settlements  and
judgments  and, in some cases, defense costs incurred by U.S. Gypsum in property
damage and  personal injury  claims in  which  it is  a defendant.  The  current
defendants  are  ten  insurance  carriers  that  provided  comprehensive general
liability insurance coverage  to U.S.  Gypsum between  the 1940's  and 1984.  As
discussed below, several carriers have settled all or a portion of the claims in
the Coverage Action.

    U.S.  Gypsum's  aggregate  expenditures  for  all  asbestos-related matters,
including property damage,  personal injury, insurance  coverage litigation  and
related  expenses,  exceeded aggregate  insurance payments  by $10.9  million in
1991, $25.8 million in 1992, and $8.2 million in 1993.

    Property Damage Cases

    The Property Damage Cases have been brought against U.S. Gypsum by a variety
of plaintiffs, including school districts, state and local governments, colleges
and universities, hospitals and private property  owners. U.S. Gypsum is one  of
many  defendants in  four cases  that have been  certified as  class actions and
others that request  such certification.  One class  action suit  is brought  on
behalf  of owners and operators  of all elementary and  secondary schools in the
United States that  contain or contained  friable asbestos-containing  material.
(IN  RE  ASBESTOS SCHOOL  LITIGATION,  U.S.D.C., E.D.  PA.)  Approximately 1,350
school districts opted out of  the class, some of which  have filed or may  file
separate  lawsuits or are  participants in a state  court class action involving
approximately 333 school districts in Michigan. (BOARD OF EDUCATION OF THE  CITY
OF DETROIT, ET AL. v. THE CELOTEX CORP., ET AL., Circuit Court for Wayne County,
Mich.)  On  April 10,  1992, a  state  court in  Philadelphia certified  a class
consisting of all owners of buildings leased to the federal government.  (PRINCE
GEORGE  CENTER,  INC.  v.  U.S.  GYPSUM CO.,  ET  AL.,  COURT  OF  COMMON PLEAS,
PHILADELPHIA, PA.)  On September  4, 1992,  a Federal  district court  in  South
Carolina   conditionally  certified  a  class  comprised  of  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  December 23, 1992, a
case was filed in state court in  South Carolina purporting to be a  "voluntary"
class  action on behalf of  owners of all buildings  containing certain types of
asbestos-containing  products  manufactured  by   the  nine  named   defendants,
including  U.S.  Gypsum, other  than  buildings owned  by  the federal  or state
governments, single  family  residences,  or  buildings at  issue  in  the  four
above-described  class actions (ANDERSON COUNTY HOSPITAL v. W.R. GRACE & CO., ET
AL., Court of Common Pleas, Hampton Co., S.C. (the "Anderson Case"). On  January
14, 1993, the plaintiff filed an amended complaint that added a number of claims
and  defendants, including USG Corporation. The amended complaint alleges, among
other things, that the guarantees executed by U.S. Gypsum in connection with the
1988 Recapitalization, as  well as  subsequent distributions of  cash from  U.S.
Gypsum  to  the Corporation,  rendered U.S.  Gypsum  insolvent and  constitute a
fraudulent conveyance. The suit  seeks to set aside  the guarantees and  recover
the  value of the cash flow "diverted" from U.S. Gypsum to the Corporation in an
amount to be determined. This case has not been certified as a class action  and
no  other threshold  issues, including  whether the  South Carolina  Courts have
personal jurisdiction  over  the Corporation,  have  been decided.  The  damages
claimed  against U.S.  Gypsum in  the class  action cases  are unspecified. U.S.
Gypsum has denied  the substantive allegations  of each of  the Property  Damage
Cases and intends to defend them vigorously except when advantageous settlements
are possible.

    As  of December 31, 1993, 61 Property Damage Cases were pending against U.S.
Gypsum; however, the number of buildings involved is greater than the number  of
cases  because  many of  these cases,  including the  class actions  referred to
above, involve multiple buildings. In addition, approximately 42 property damage
claims have been threatened against U.S. Gypsum.

    In total, U.S. Gypsum  has settled property  damage claims of  approximately
191  plaintiffs involved in approximately 75  cases. Twenty-five cases have been
tried to verdict,  16 of which  were won by  U.S. Gypsum and  6 lost; two  other
cases,  one won at  the trial level  and one lost,  were settled during appeals.
Another case that was lost at the trial court level has been reversed on  appeal
and a new trial ordered.

                                       41
<PAGE>
Appeals  are pending in  5 of the  tried cases. In  the cases lost, compensatory
damage awards against U.S. Gypsum  have totaled $11.5 million. Punitive  damages
totalling  $5.5 million were entered against U.S.  Gypsum in four trials. Two of
the punitive damage  awards, totalling  $1.45 million, were  paid after  appeals
were  exhausted; a third was  settled after the verdict  was reversed on appeal.
The remaining punitive damage award is on appeal.

    In 1991, 13  new Property Damage  Cases were filed  against U.S. Gypsum,  11
were  dismissed before trial, 8  were settled, 2 were  closed following trial or
appeal, and 100 were pending at year-end. U.S. Gypsum expended $22.2 million for
the defense  and resolution  of  Property Damage  Cases and  received  insurance
payments of $13.8 million in 1991. During 1992, 7 new Property Damage Cases were
filed  against U.S. Gypsum, 10  were dismissed before trial,  18 were settled, 3
were closed following  trial or appeal,  and 76 were  pending at year-end.  U.S.
Gypsum  expended $34.9 million for the defense and resolution of Property Damage
Cases and received insurance payments of $10.2  million in 1992. In 1993, 5  new
Property  Damage Cases were  filed against U.S. Gypsum,  7 were dismissed before
trial, 11  were  settled,  1  was  closed following  trial  or  appeal,  2  were
consolidated into 1, and 61 were pending at year-end. U.S. Gypsum expended $13.9
million  for the  defense and resolution  of Property Damage  Cases and received
insurance payments of $7.6 million in 1993.

    In the Property Damage Cases litigated to date, a defendant's liability  for
compensatory  damages, if any,  has been limited to  damages associated with the
presence and  quantity  of  asbestos-containing products  manufactured  by  that
defendant which are identified in the buildings at issue, although plaintiffs in
some  cases have  argued that principles  of joint and  several liability should
apply. Because of  the unique factors  inherent in each  of the Property  Damage
Cases,  including the lack of reliable  information as to product identification
and the amount of damages claimed  against U.S. Gypsum in many cases,  including
the  class actions  described above, management  is unable to  make a reasonable
estimate of the cost of disposing of pending Property Damage Cases.

    Personal Injury Cases

    U.S. Gypsum was among numerous defendants in asbestos personal injury  suits
and administrative claims involving approximately 59,000 claimants pending as of
December  31, 1993.  All asbestos  bodily injury  claims pending  in the federal
courts, including approximately one-third of  the Personal Injury Cases  pending
against  U.S. Gypsum, have been consolidated in the United States District Court
for the Eastern District of Pennsylvania.

    U.S. Gypsum  is  a  member,  together with  19  other  former  producers  of
asbestos-containing   products,  of  the  Center   for  Claims  Resolution  (the
"Center"). The  Center  has assumed  the  handling, including  the  defense  and
settlement,  of all  Personal Injury Cases  pending against U.S.  Gypsum and the
other members of the Center. Each member of the Center is assessed a portion  of
the  liability and  defense costs  of the Center  for the  Personal Injury Cases
handled by the Center, according  to predetermined allocation formulas. Five  of
U.S.  Gypsum's insurance  carriers that in  1985 signed  an Agreement Concerning
Asbestos-Related Claims  (the "Wellington  Agreement") are  supporting  insurers
(the "Supporting Insurers") of the Center. The Supporting Insurers are obligated
to  provide coverage for the defense and indemnity costs of the Center's members
pursuant to  the coverage  provisions in  the Wellington  Agreement. Claims  for
punitive  damages are defended but  not paid by the  Center; if punitive damages
are  recovered,  insurance  coverage  may  be  available  under  the  Wellington
Agreement  depending on  the terms of  particular policies  and applicable state
law. Punitive damages have not  been awarded against U.S.  Gypsum in any of  the
Personal  Injury Cases. Virtually all of U.S. Gypsum's personal injury liability
and defense  costs  are  paid  by  those of  its  insurance  carriers  that  are
Supporting Insurers. The Supporting Insurers provided approximately $350 million
of  the total  coverage referred to  above, of which  approximately $262 million
remains unexhausted.

                                       42
<PAGE>
    On  January 15, 1993, U.S.  Gypsum and the other  members of the Center were
named as defendants in a class action  filed in the U.S. District Court for  the
Eastern  District of Pennsylvania  (GEORGINE ET AL. v.  AMCHEM PRODUCTS INC., ET
AL.,  Case   No.  93-CV-0215)   (hereinafter  "Georgine,"   formerly  known   as
"Carlough").  The complaint  generally defines  the class  of plaintiffs  as all
persons who  have been  occupationally exposed  to asbestos-containing  products
manufactured by the defendants and who had not filed an asbestos personal injury
suit  as of the date of the filing  of the class action. Simultaneously with the
filing of the class  action, the parties filed  a settlement agreement in  which
the  named  plaintiffs, proposed  class counsel,  and  the defendants  agreed to
settle and  compromise the  claims of  the proposed  class. The  settlement,  if
approved  by the  court, will  implement for  all future  Personal Injury Cases,
except as noted below, an administrative compensation system to replace judicial
claims against the defendants, and  will provide fair and adequate  compensation
to future claimants who can demonstrate exposure to asbestos-containing products
manufactured  by the defendants and the presence of an asbestos-related disease.
Class members  will be  given  the opportunity  to "opt  out,"  or elect  to  be
excluded  from  the settlement,  although the  defendants  reserve the  right to
withdraw from  the settlement  if  the number  of opt  outs  is, in  their  sole
judgment,  excessive. In  addition, in each  year a limited  number of claimants
will have certain  rights to prosecute  their claims for  compensatory (but  not
punitive)  damages in court in the event they reject the compensation offered by
the administrative processing of their claim.

    The Center  members,  including  U.S. Gypsum,  have  instituted  proceedings
against  those of their insurance carriers that had not consented to support the
settlement, seeking a  declaratory judgment  that the  settlement is  reasonable
and,  therefore, that the  carriers are obligated  to fund their  portion of it.
Consummation of the  settlement is  contingent upon, among  other things,  court
approval  of the settlement  and a favorable ruling  in the declaratory judgment
proceedings against the non-consenting insurers. It is anticipated that  appeals
will  follow the district  court's ruling on the  fairness and reasonableness of
the settlement.

    Each of  the defendants  has committed  to  fund a  defined portion  of  the
settlement,  up to a stated maximum amount,  over the initial ten year period of
the  agreement  (which  is  automatically  extended  unless  terminated  by  the
defendants).  Taking  into account  the provisions  of the  settlement agreement
concerning the maximum number of claims that must be processed in each year  and
the  total amount to  be made available  to the claimants,  the Center estimates
that U.S.  Gypsum will  be obligated  to fund  a maximum  of approximately  $125
million  of the class  action settlement, exclusive of  expenses, with a maximum
payment of less than $18 million in any single year; of the total amount of U.S.
Gypsum's obligation, all but approximately $7 million is expected to be paid  by
U.S. Gypsum's insurance carriers.

    During  1991, approximately 13,100 Personal  Injury Cases were filed against
U.S. Gypsum  and approximately  6,300  were settled  or dismissed.  U.S.  Gypsum
incurred expenses of $15.1 million in 1991 with respect to Personal Injury Cases
of  which $15.0 million was paid by insurance. During 1992, approximately 20,100
Personal Injury Cases were  filed against U.S.  Gypsum and approximately  10,600
were  settled or  dismissed. U.S. Gypsum  incurred expenses of  $21.6 million in
1992 with respect to Personal  Injury Cases of which  $21.5 million was paid  by
insurance.  During 1993, approximately  26,900 Personal Injury  Cases were filed
against U.S. Gypsum  and approximately  22,900 were settled  or dismissed.  U.S.
Gypsum  incurred  expenses of  $34.9 million  in 1993  with respect  to Personal
Injury Cases of which $34.0  million was paid by  insurance. As of December  31,
1993,  1992, and 1991, approximately 59,000,  54,000, and 43,000 Personal Injury
Cases were outstanding against U.S. Gypsum, respectively.

    U.S. Gypsum's average  settlement cost  for Personal Injury  Cases over  the
past  three years has been approximately  $1,600 per claim, exclusive of defense
costs. Management  anticipates that  its average  settlement cost  is likely  to
increase  due  to  such factors  as  the possible  insolvency  of co-defendants,
although this increase may be offset to some extent by other factors,  including
the possibility for block settlements of large numbers of cases and the apparent
increase in the percentage of asbestos personal injury cases that appear to have
been  brought by individuals with little  or no physical impairment. Through the
Center,  U.S.   Gypsum  has   reached   settlements  on   approximately   26,700

                                       43
<PAGE>
pending  Personal  Injury Cases  for an  amount  estimated at  approximately $32
million. These settlements will be consummated and the cases closed over a three
year period.  In  management's  opinion,  based  primarily  upon  U.S.  Gypsum's
experience  in the  Personal Injury  Cases disposed of  to date  and taking into
consideration  a   number   of   uncertainties,  it   is   probable   that   all
asbestos-related  Personal  Injury  Cases  pending  against  U.S.  Gypsum  as of
December 31,  1993,  can be  disposed  of for  a  total amount,  including  both
indemnity  costs  and legal  fees  and expenses,  estimated  to be  between $100
million  and  $120  million  (of  which  all  but  $2  million  or  $5  million,
respectively,  is  expected to  be  paid by  insurance).  The estimated  cost of
resolving pending  claims  takes  into  account, among  other  factors,  (i)  an
increase  in the number of pending claims; (ii) the settlements of certain large
blocks of claims for higher per-case averages than have historically been  paid;
(iii)  the committed but  unconsummated settlements described  above; and (iv) a
small increase in U.S. Gypsum's historical settlement average.

    Assuming that  the GEORGINE  class action  settlement referred  to above  is
approved  substantially  in its  current  form, management  estimates,  based on
assumptions supplied  by the  Center, U.S.  Gypsum's maximum  total exposure  in
Personal  Injury  Cases during  the  next ten  years  (the initial  term  of the
agreement), including liability for pending  claims and claims resolved as  part
of  the class action settlement, as well as defense costs and other expenses, at
approximately $262 million, of which  approximately $250 million is expected  to
be  paid by  insurance. U.S.  Gypsum's additional  exposure for  claims filed by
persons who have opted out of Georgine would depend on the number of such claims
that are filed, which cannot presently be determined.

    Coverage Action

    As indicated above, all of U.S. Gypsum's carriers initially denied  coverage
for  the Property Damage  Cases and the  Personal Injury Cases,  and U.S. Gypsum
initiated the Coverage  Action to  establish its  right to  such coverage.  U.S.
Gypsum  has voluntarily dismissed the Supporting Insurers referred to above from
the personal injury portion of the Coverage Action because they are committed to
providing personal injury coverage in accordance with the Wellington  Agreement.
U.S.  Gypsum's  claims  against  the remaining  carriers  for  coverage  for the
Personal Injury Cases have been stayed since 1984.

    On January 7,  1991, the trial  court in  the Coverage Action  ruled on  the
applicability of U.S. Gypsum's insurance policies to settlements and one adverse
judgment  in eight Property Damage  Cases. The court ruled  that the eight cases
were generally covered,  and imposed coverage  obligations on particular  policy
years based upon the dates when the presence of asbestos-containing material was
"first   discovered"  by  the   plaintiff  in  each   case.  The  court  awarded
reimbursement of approximately $6.2 million spent by U.S. Gypsum to resolve  the
eight  cases. U.S. Gypsum  has appealed the  court's ruling with  respect to the
policy years  available  to  cover  particular claims,  and  the  carriers  have
appealed  most other aspects of the court's ruling. The appeal process is likely
to take up to a year or more from the date of this Prospectus.

    U.S. Gypsum's experience in the  Property Damage Cases suggests that  "first
discovery"  dates in the eight  cases referred to above  (1978 through 1985) are
likely to  be typical  of  most pending  cases.  U.S. Gypsum's  total  insurance
coverage  for the years  1978 through 1984 is  approximately $350 million (after
subtracting insolvencies  and discounts  given to  settling carriers).  However,
some  pending cases, as well as some cases  filed in the future, may be found to
have first discovery dates later than August 1, 1984, after which U.S.  Gypsum's
insurance  policies  did not  provide coverage  for asbestos-related  claims. In
addition, as described below, the first layer excess carrier for the years  1980
through  1984  is insolvent  and  U.S. Gypsum  may  be required  to  pay amounts
otherwise covered by  those and  other insolvent policies.  Accordingly, if  the
court's  ruling  is affirmed,  U.S. Gypsum  will  likely be  required to  bear a
portion of the cost of the property damage litigation.

    Eight carriers, including two of the Supporting Insurers, have settled  U.S.
Gypsum's  claims for both property damage  and personal injury coverage and have
been dismissed from the  Coverage Action entirely. Four  of these carriers  have
agreed to pay all or a substantial portion of their policy limits to U.S. Gypsum
beginning  in 1991 and continuing  over the next four  years. Three other excess
carriers, including the two settling Supporting Insurers, have agreed to provide
coverage for the Property

                                       44
<PAGE>
Damage Cases and the  Personal Injury Cases subject  to certain limitations  and
conditions,  when and if underlying primary and excess coverage is exhausted. It
cannot presently be determined when such coverage might be reached. Taking  into
account  the  above  settlements,  including  participation  of  certain  of the
settling carriers in the Wellington Agreement, and consumption through  December
31, 1993, carriers providing a total of approximately $90 million of unexhausted
insurance   have  agreed,  subject  to  the  terms  of  the  various  settlement
agreements, to  cover both  Personal  Injury Cases  and Property  Damage  Cases.
Carriers  providing an additional $250 million  of coverage that was unexhausted
as of December 31,  1993 have agreed  to cover Personal  Injury Cases under  the
Wellington Agreement, but continue to contest coverage for Property Damage Cases
and  remain defendants in the Coverage Action. U.S. Gypsum will continue to seek
negotiated resolutions with its  carriers in order to  minimize the expense  and
delays of litigation.

    Insolvency  proceedings have been  instituted against four  of U.S. Gypsum's
insurance carriers.  Midland  Insurance  Company, declared  insolvent  in  1986,
provided  excess insurance ($4  million excess of $1  million excess of $500,000
primary in  each policy  year) from  February  15, 1975  to February  15,  1978;
Transit  Casualty Company, declared insolvent in 1985, provided excess insurance
($15 million excess of $1  million primary in each  policy year) from August  1,
1980  to December 31,  1985; Integrity Insurance  Company, declared insolvent in
1986, provided excess insurance ($10 million  quota share of $25 million  excess
of  $90  million) from  August 1,  1983 to  July 31,  1984; and  American Mutual
Insurance Company, declared  insolvent in  1989, provided the  primary layer  of
insurance  ($500,000 per year)  from February 1,  1963 to April  15, 1971. It is
possible that U.S.  Gypsum will be  required to pay  a presently  indeterminable
portion  of the costs that would otherwise  have been covered by these policies.
In addition, portions  of various policies  issued by Lloyd's  and other  London
market  companies between  1966 and 1979  have also become  insolvent; under the
Wellington  Agreement,  U.S.  Gypsum  must   pay  these  amounts,  which   total
approximately $12 million.

    It  is not  possible to predict  the number of  additional lawsuits alleging
asbestos-related claims that  may be filed  against U.S. Gypsum.  The number  of
Personal  Injury Cases pending against U.S. Gypsum  has increased in each of the
last several years.  In addition,  many Property Damage  Cases are  still at  an
early  stage and the potential liability therefrom is consequently uncertain. In
view of  the limited  insurance  funding currently  available for  the  Property
Damage  Cases  resulting  from the  continued  resistance  by a  number  of U.S.
Gypsum's insurers to providing coverage,  the effect of the asbestos  litigation
on  the Corporation will depend upon a variety of factors, including the damages
sought in the Property Damage Cases that reach trial prior to the completion  of
the Coverage Action, U.S. Gypsum's ability to successfully defend or settle such
cases,  and the resolution  of the Coverage  Action. As a  result, management is
unable to determine whether an adverse  outcome in the asbestos litigation  will
have  a material adverse effect on the results of operations or the consolidated
financial position of the Corporation.

    Accounting Change

    Effective January  1,  1994, the  Corporation  adopted the  requirements  of
Financial   Accounting  Standards  Board  ("FASB")  Interpretation  No.  39.  In
accordance with Interpretation No.  39, U.S. Gypsum will  record an accrual  for
its  liabilities for asbestos-related matters which  are deemed probable and can
be reasonably estimated, and will separately record an asset equal to the amount
of such liabilities that is expected to be paid by uncontested insurance. Due to
management's inability  to  reasonably  estimate  U.S.  Gypsum's  liability  for
Property  Damage  Cases  and (until  the  implementation of  Georgine  is deemed
probable) future Personal  Injury Cases,  it is presently  anticipated that  the
liabilities  and  assets to  be recorded  in  1994 will  relate only  to pending
Personal Injury  Cases. This  implementation  of Interpretation  No. 39  is  not
expected to have a material impact on reported earnings or net assets.

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  substantially  all  of  these  sites,   the

                                       45
<PAGE>
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  estimable 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 USG-owned property are also
covered  by  reserves  established  in   accordance  with  the  foregoing.   The
Corporation believes that neither these matters nor any other known governmental
proceeding  regarding environmental matters will  have a material adverse effect
upon its earnings or consolidated financial position.

OTHER

    The Corporation's plants are substantial users of thermal energy. Five major
fuel types are used in a mix consisting of 81% natural gas, 10% electricity,  3%
coke,  3% coal and 3% oil. With few exceptions, plants which use natural gas are
equipped with fuel stand-by systems, principally oil. Primary fuel supplies have
been  adequate  and  no  curtailment  of  plant  operations  has  resulted  from
insufficient  supplies. Supplies are  likely to remain  sufficient for projected
requirements.

    Loss of one or more of the patents or licenses held by the Corporation would
not have a major impact on the Corporation's business or its ability to continue
operations.

    None of the industry segments has any special working capital requirements.

    None of the industry segments is  materially dependent on a single  customer
or  a few customers  on a regular  basis. No single  customer of the Corporation
accounted for more than  4% of the Corporation's  1993 or 1992 consolidated  net
sales.

    Because  orders are filled  upon receipt, none of  the industry segments has
any significant backlog.

    No  material  part  of  any  industry  segment's  business  is  subject   to
renegotiation  of profits  or termination  of contracts  or subcontracts  at the
election of the government.

    All of the  Corporation's products regularly  require improvement to  remain
competitive.  The Corporation  also develops and  produces comprehensive systems
employing several of its products. In  order to maintain its high standards  and
remain  a  leader  in  the  building  materials  industry,  the  Corporation has
performed extensive research and development activities and makes the  necessary
capital  expenditures to maintain production  facilities in sufficient operating
condition.

    The average number of  persons employed by the  Corporation during 1993  and
1992 was 11,900 and 11,850, respectively.

                                   MANAGEMENT

DIRECTORS OF THE CORPORATION

    In  connection with the consummation of  the Prepackaged Plan, the number of
persons comprising the Board was increased by five effective May 6, 1993  which,
after  the  May  1993  retirement  of  one  director,  brought  the  total Board
membership to 15. Of the five new directors (the "New Directors"), two,  Messrs.
Crutcher  and Lesser, were nominated by  a committee representing holders of the
Corporation's senior subordinated  debentures which were  converted into  Common
Stock  under the Prepackaged Plan (each  a "Senior Subordinated Director"); two,
Messrs. Fetzer and Zubrow, were nominated by Water Street (each a "Water  Street
Director");  and  one,  Mr. Brown,  was  nominated by  a  committee representing
holders of the Corporation's junior subordinated debentures which were converted
into  Common  Stock  and  Warrants   under  the  Prepackaged  Plan  (a   "Junior
Subordinated Director").

    As  the  respective  terms  of  office  of  the  New  Directors  expire, the
Prepackaged Plan provides that each such New Director will be renominated. If  a
New  Director declines or is unable to accept such nomination, or in the event a
New Director resigns during his term or otherwise becomes unable to continue his
duties as  a director,  such New  Director or,  in the  case of  a Water  Street
Director,  Water  Street,  shall recommend  his  successor to  the  Committee on
Directors of the Board. In the event of the

                                       46
<PAGE>
death or incapacity of  a New Director, his  successor shall be recommended,  in
the  case of a Water Street  Director, by Water Street, in  the case of a Senior
Subordinated Director, by the remaining Senior Subordinated Director, and in the
case of a Junior Subordinated Director, by the remaining New Directors. Any such
nominee shall be subject to approval  by the Board's Committee on Directors  and
the Board, which approval shall not be unreasonably withheld.

    Until June 22, 1997, the time at which the director nomination and selection
procedures  established  by the  Prepackaged Plan  terminate,  no more  than two
employee directors may serve simultaneously on the Board. An "employee director"
is defined for this purpose as any officer or employee of the Corporation or any
direct or indirect subsidiary, or any director of any such subsidiary who is not
also a director of the Corporation.

<TABLE>
<CAPTION>
                                                                                                      YEAR FIRST
                                                       PRINCIPAL OCCUPATION,                            BECAME
                                                   FIVE YEAR EMPLOYMENT HISTORY                        DIRECTOR
         NAME AND AGE                                 AND OTHER DIRECTORSHIPS                          AND CLASS
- ------------------------------  -------------------------------------------------------------------  -------------
<S>                             <C>                                                                  <C>
Eugene B. Connolly, 61          Chairman and Chief Executive Officer, since January 1994; Chairman,      1988
                                President and Chief Executive  Officer (April 1993-December  1993);   Class 1994
                                Chairman  of the Board and Chief Executive Officer (June 1990-March
                                1993); President  and  Chief Executive  Officer  (January  1990-May
                                1990); Executive Vice President of the Corporation (1987-1989); and
                                President and Chief Executive Officer of USG Interiors, Inc. (March
                                1987-March 1989). He also was President and Chief Executive Officer
                                of  DAP Inc.  (July 1988-March 1989).  Prior to that,  he served as
                                President and  Chief  Operating  Officer of  United  States  Gypsum
                                Company.  He joined the Corporation  in 1958, was appointed General
                                Manager of the Southern Construction Products Division in 1980, and
                                was elected a Group Vice President, Subsidiaries in 1983 and  Group
                                Vice  President, International and Industrial in 1984. Mr. Connolly
                                is a director of BPB Industries plc, London, England and a director
                                of U.S. Can Corporation.  He is a member  of the Advisory Board  of
                                the Kellogg Graduate School of Management, Northwestern University,
                                the Dean's Advisory Council, School of Business, Indiana University
                                and  the  Governing  Council, Good  Shepherd  Hospital (Barrington,
                                Illinois). Mr.  Connolly has  been a  director of  the  Corporation
                                since May 1988 and is Chairman of the Board's Executive Committee.
Keith A. Brown, 42              President (since 1987) of Chimera Corporation, a private management      1993
                                holding  company. Mr. Brown is a  director (since 1988) of Adelphia   Class 1994
                                Incorporated, a director  (since 1988) of  Global Film &  Packaging
                                Corporation,   a  director   (since  1989)   of  Mansfield  Foundry
                                Corporation, and  a  director  (since  1993)  of  Ashland  Castings
                                Corporation. Mr. Brown has been a director of the Corporation since
                                May  1993 and is a member of the Board's Audit Committee and Public
                                Affairs Committee.
James C. Cotting, 60            Chairman and Chief Executive Officer (since April 1987) of Navistar      1987
                                International   Corporation,   diesel   truck   manufacturing   and   Class 1994
                                engineering  and financial services.  Mr. Cotting is  a director of
                                Asarco Incorporated and The Interlake Corporation. He is a director
                                of the National Association of Manufacturers and is a member of the
                                Conference  Board.  Mr.  Cotting  has   been  a  director  of   the
                                Corporation  since  October  1987,  is  a  member  of  the  Board's
                                Executive Committee and is Chairman of its Finance Committee.
</TABLE>

                                       47
<PAGE>
<TABLE>
<CAPTION>
                                                                                                      YEAR FIRST
                                                       PRINCIPAL OCCUPATION,                            BECAME
                                                   FIVE YEAR EMPLOYMENT HISTORY                        DIRECTOR
         NAME AND AGE                                 AND OTHER DIRECTORSHIPS                          AND CLASS
- ------------------------------  -------------------------------------------------------------------  -------------
<S>                             <C>                                                                  <C>
Philip C. Jackson, Jr., 65      Formerly Vice Chairman and a director of Central Bank of the South,      1979
                                Birmingham, Alabama, and of its parent company, Central  Bancshares   Class 1994
                                of the South (1980-1989), banking and financial services; presently
                                Adjunct Professor, Birmingham-Southern College, Birmingham, Alabama
                                (since  January 1989). Mr.  Jackson was a  member (April 1990-April
                                1993) of the  Thrift Depositors Protection  Oversight Board,  Wash-
                                ington,  D.C. He is  Director, Saul Centers,  Inc., Washington D.C.
                                His past affiliations include: member of the Board of Governors  of
                                the  Federal Reserve System,  Washington, D.C., (July 1975-November
                                1978) and  Vice President  and a  director of  the Jackson  Company
                                (mortgage  banking  operations)  of  Birmingham,  Alabama  (October
                                1949-June  1975).  Mr.  Jackson  is  Trustee,   Birmingham-Southern
                                College,  Birmingham,  Alabama.  He  has  been  a  director  of the
                                Corporation since May 1979,  is a member  of the Board's  Executive
                                Committee and is Chairman of its Public Affairs Committee.

John B. Schwemm, 59             Retired   Chairman   (1983-1989)   and   Chief   Executive  Officer      1988
                                (1983-1988) of  R.R.  Donnelley  &  Sons  Company,  commercial  and   Class 1994
                                financial  printing and publishing. He joined that Company in 1965,
                                prior to which he  was with the  law firm of  Sidley & Austin.  Mr.
                                Schwemm  was appointed  General Counsel  in 1969  and elected Group
                                Vice President, Book  Group in  1976. He  serves as  a director  of
                                Walgreen  Company and William Blair Mutual Funds; he also serves as
                                a Trustee  of  Northwestern  University. Mr.  Schwemm  has  been  a
                                director  of the Corporation since May 1988  and is a member of the
                                Board's  Audit   Committee   and  Compensation   and   Organization
                                Committee.
W.H. Clark, 61                  Chairman  of the Board (since 1984), Chief Executive Officer (since   1985 Class
                                1982) and  President  (1984-1990)  of  Nalco  Chemical  Company  of      1995
                                Naperville,  Illinois,  specialized  chemicals  and  technology. He
                                joined the company in 1960  and served in various capacities  until
                                his appointment as a General Manager in 1978. Mr. Clark was elected
                                Group  Vice President  and President, Industrial  Division (both in
                                1978); director  in 1980;  and Executive  Vice President,  Domestic
                                Operations, in 1982. He is a director of Northern Trust Corporation
                                and  The Northern  Trust Bank,  Nicor Corporation,  Bethlehem Steel
                                Corporation, James  River  Corporation and  Northern  Illinois  Gas
                                Company.  Mr. Clark  has been a  director of  the Corporation since
                                August 1985, is  a member  of the Board's  Executive Committee  and
                                Compensation  and  Organization Committee  and  is Chairman  of its
                                Committee on Directors and Audit Committee.
Lawrence M. Crutcher, 51        Managing Director  (since 1990)  of Veronis,  Suhler &  Associates,   1993 Class
                                investment  bankers. From 1967 to 1989,  Mr. Crutcher was with Time      1995
                                Inc. He was President  of Book-of-the-Month Club (1985-1989),  Vice
                                President  for Financial Planning (1984), Vice President, Magazines
                                (1981-1983),  and  Vice  President,  Circulation  (1976-1980).  Mr.
                                Crutcher has been
</TABLE>

                                       48
<PAGE>
<TABLE>
<CAPTION>
                                                                                                      YEAR FIRST
                                                       PRINCIPAL OCCUPATION,                            BECAME
                                                   FIVE YEAR EMPLOYMENT HISTORY                        DIRECTOR
         NAME AND AGE                                 AND OTHER DIRECTORSHIPS                          AND CLASS
- ------------------------------  -------------------------------------------------------------------  -------------
<S>                             <C>                                                                  <C>
                                director  of the Corporation since May 1993  and is a member of the
                                Board's Committee on Directors and Public Affairs Committee.

Wade Fetzer III, 56             Partner (since 1986) of Goldman,  Sachs & Co., investment  bankers.      1993
                                Mr.  Fetzer is a member of the  Board of Trustees and the Executive   Class 1995
                                Committee of Rush-Presbyterian St. Luke's Medical Center, a Trustee
                                of  Northwestern  University  and   the  University  of   Wisconsin
                                Foundation,  and  a  member of  the  Board of  United  Charities of
                                Chicago. Mr. Fetzer has  been a director  of the Corporation  since
                                May   1993  and  is  a  member  of  the  Board's  Compensation  and
                                Organization Committee, Public Affairs  Committee and Committee  on
                                Directors.
William C. Foote, 42            President and Chief Operating Officer since January 1994; President      1994
                                and   Chief  Executive   Officer,  USG   Interiors,  Inc.  (January   Class 1995
                                1993-December 1993);  President and  Chief Executive  Officer,  L&W
                                Supply  Corporation (September 1991-December  1993); Executive Vice
                                President and  Chief  Operating  Officer,  L&W  Supply  Corporation
                                (December  1990-August  1991);  Senior Vice  President  and General
                                Manager, Central Construction Products Region, United States Gypsum
                                Company (April  1989-November  1990); Senior  Vice  President,  USG
                                Interiors,  Inc.  (December 1988-March  1989); Vice  President, USG
                                Corporation  and   Vice   President,   International   &   Business
                                Development,  USG Interiors, Inc.  (January 1988-November 1988). He
                                joined the  Corporation  in January  1984  and was  appointed  Vice
                                President,   Strategic  Planning  and  Corporate  Development,  USG
                                Corporation in March 1985.  Mr. Foote is  an alternate director  of
                                BPB  Industries  plc,  London, England;  a  member of  the  Del Nor
                                Community Health Care Foundation; and  a member of Chicago  United.
                                He has been a director of the Corporation since March 1994 and is a
                                member of the Board's Executive Committee.
Judith A. Sprieser, 40          President  and Chief Executive Officer  (June 1993-present) of Sara      1994
                                Lee Bakery,  North America,  a division  of Sara  Lee  Corporation,   Class 1995
                                packaged  food and  consumer products.  Ms. Sprieser  has been with
                                Sara Lee Corporation since 1987 and served as Assistant  Treasurer,
                                Corporate  Finance  (1987-1990)  and  Corporate  Financial  Officer
                                (1990-1993) of North American Bakery, Sara Lee Bakery. She was also
                                Vice President, Sara Lee Food  Group (January 1993-June 1993).  She
                                has been a director of the Corporation since February 1994 and is a
                                member of the Board's Audit Committee and Committee on Directors.
Robert L. Barnett, 53           Formerly  Vice Chairman  of Ameritech (1991-1992)  and President of      1990
                                the  Ameritech   Bell   Group   (1989-1992),   communications   and   Class 1996
                                information    services,   which    includes   eight   wholly-owned
                                subsidiaries  of  American  Information  Technologies   Corporation
                                (Ameritech)  and the Bell  Group staff. Mr.  Barnett also served as
                                President of Ameritech Enterprise Group
</TABLE>

                                       49
<PAGE>
<TABLE>
<CAPTION>
                                                                                                      YEAR FIRST
                                                       PRINCIPAL OCCUPATION,                            BECAME
                                                   FIVE YEAR EMPLOYMENT HISTORY                        DIRECTOR
         NAME AND AGE                                 AND OTHER DIRECTORSHIPS                          AND CLASS
- ------------------------------  -------------------------------------------------------------------  -------------
<S>                             <C>                                                                  <C>
                                (1987-1989), President  and Chief  Executive Officer  of  Wisconsin
                                Bell   Company  (1985-1987),  Vice   President  of  Operations  for
                                Wisconsin Bell Company (1984-1985),  President of Ameritech  Mobile
                                Communications Company (1983-1984), and in various other capacities
                                with  the Bell System, which he joined in 1964. He is a director of
                                Johnson Controls, Inc. and is a  member of the Advisory Council  of
                                the  Robert R. McCormick School  of Engineering and Applied Science
                                at Northwestern University and  of the University's Electrical  En-
                                gineering  and Computer  Science Industrial  Advisory Board.  He is
                                affiliated  with  the  Institute  of  Electrical  and   Electronics
                                Engineers. Mr. Barnett has been a director of the Corporation since
                                May   1990  and  is  a  member  of  the  Board's  Compensation  and
                                Organization Committee, Audit Committee and Committee on Directors.

David W. Fox, 62                Chairman and Chief Executive Officer (since 1990) of Northern Trust      1987
                                Corporation and The Northern  Trust Company, banking and  financial   Class 1996
                                services.  He has been  with The Northern  Trust Company since 1955
                                and served  as Senior  Vice President  (1974-1978), Executive  Vice
                                President  (1978-1981),  Vice  Chairman  (1981-1987)  and President
                                (1987-1993). Mr. Fox is a director  of The Federal Reserve Bank  of
                                Chicago,  Northern Trust  of Florida  Corp., Banque  Rivaud (Paris,
                                France), INROADS/Chicago and the Chicago Central Area Committee. He
                                is a  Governor of  the  Chicago Stock  Exchange  and a  trustee  of
                                Northwestern   Memorial  Hospital,   the  Adler   Planetarium,  The
                                Orchestral Association, and DePaul University.  Mr. Fox has been  a
                                director  of the  Corporation since  May 1987,  is a  member of the
                                Board's Executive  Committee, Finance  Committee and  Committee  on
                                Directors  and  is Chairman  of  its Compensation  and Organization
                                Committee.
Marvin E. Lesser, 52            Managing Partner  (since  1989)  of Cilluffo  Associates,  L.P.,  a      1993
                                private  investment partnership.  Managing Partner  (since 1993) of   Class 1996
                                Sigma Partners, L.P., a private investment partnership. Mr.  Lesser
                                has  also been a private consultant  since 1992. He was Senior Vice
                                President (1986-1988) of Bessemer Securities Corporation, a private
                                investment  company   and   a  director   (1989-1991)   of   Amdura
                                Corporation.  Mr. Lesser is  Chairman of the  Seacoast Area Chapter
                                (New Hampshire) of the American Red  Cross. He has been a  director
                                of  the Corporation since May  1993 and is a  member of the Board's
                                Finance  Committee,  Committee  on  Directors  and  Public  Affairs
                                Committee.
Alan G. Turner, 60              Chairman  and  Chief  Executive  of  BPB  Industries  plc,  London,      1984
                                England, a  manufacturer  of  gypsum products  and  other  building   Class 1996
                                materials  and  paper and  packaging  products. Prior  to September
                                1993, Mr. Turner was Chairman (November 1992-August 1993), Chairman
                                and  Chief  Executive  (1985-1992),  Chief  Executive  (1978-1985),
                                Deputy  Chief Executive  (1974-1978), and  served in  various other
                                capacities since his association with  BPB Industries plc in  1962.
                                He  has been a director  of that company since  1972. Mr. Turner is
</TABLE>

                                       50
<PAGE>
<TABLE>
<CAPTION>
                                                                                                      YEAR FIRST
                                                       PRINCIPAL OCCUPATION,                            BECAME
                                                   FIVE YEAR EMPLOYMENT HISTORY                        DIRECTOR
         NAME AND AGE                                 AND OTHER DIRECTORSHIPS                          AND CLASS
- ------------------------------  -------------------------------------------------------------------  -------------
<S>                             <C>                                                                  <C>
                                also a  director and  Vice  President of  the National  Council  of
                                Building  Material Producers  Limited, United  Kingdom; director of
                                The Manufacturers  Life  Insurance Company,  Toronto;  director  of
                                Jaguar  Limited,  United Kingdom;  director of  Adelphi Enterprises
                                Ltd.; and a member of the European Advisory Board of Boral Limited,
                                Australia. He is an honorary  president of Eurogypsum; a member  of
                                the   Council  and   Treasurer  of   the  Royal   Society  for  the
                                Encouragement of Arts, Manufactures & Commerce, United Kingdom  and
                                a  member of the Institution of  Chemical Engineers. Mr. Turner has
                                been a director of the Corporation  since May 1984 and is a  member
                                of  the Board's  Audit Committee  and Committee  on Directors. (BPB
                                Industries plc, London, England, beneficially owns 1,000 shares  of
                                common stock of the Corporation).

Barry L. Zubrow, 40             Partner  (since 1988) of Goldman,  Sachs & Co., investment bankers.      1993
                                Mr. Zubrow  is a  member  of the  Board  of Managers  of  Haverford   Class 1996
                                College.  He has been a director  of the Corporation since May 1993
                                and is a member of the  Board's Finance Committee and Committee  on
                                Directors.
</TABLE>

EXECUTIVE OFFICERS OF THE CORPORATION (WHO ARE NOT DIRECTORS)

<TABLE>
<CAPTION>
                                                                                                    HAS HELD
                NAME, AGE                                                                            PRESENT
          AND PRESENT POSITION                PRIOR BUSINESS EXPERIENCE IN PAST FIVE YEARS       POSITION SINCE
- -----------------------------------------  --------------------------------------------------  -------------------
<S>                                        <C>                                                 <C>
Arthur G. Leisten, 52                      Vice  President  and  General  Counsel  to January     February 1994
Senior Vice President and General Counsel  1990; Senior Vice President and General Counsel to
                                           March 1993; Senior Vice President, General Counsel
                                           and Secretary to February 1994.
P. Jack O'Bryan, 58                        Senior Vice President and General Manager, Central     January 1993
Senior Vice President and Chief            Construction Products Region, United States Gypsum
Technology Officer                         Company  to  March   1989;  President  and   Chief
                                           Executive Officer, United States Gypsum Company to
                                           January 1993.
Harold E. Pendexter, Jr., 59               Vice    President,   Human   Resources   and   Ad-     January 1991
Senior Vice President and Chief            ministration  to   January   1990;   Senior   Vice
Administrative Officer                     President,  Human Resources  and Administration to
                                           January 1991.
Raymond T. Belz, 53                        Vice  President  Finance,  United  States   Gypsum     January 1994
Vice President and Controller; Vice        Company to December 1990; Vice President Financial
President Financial Services, United       Services,   United  States  Gypsum  Company  since
States Gypsum Company                      January 1991.
Brian W. Burrows, 54                       Same position.                                          March 1987
Vice President, Research and Development
Richard H. Fleming, 46                     Vice  President   Finance  and   Chief   Financial     January 1994
Vice President and Chief Financial         Officer,  Masonite  Corporation to  February 1989;
Officer                                    Director, Corporate  Finance, USG  Corporation  to
                                           January  1991;  Vice  President  and  Treasurer to
                                           December 1993.
</TABLE>

                                       51
<PAGE>
<TABLE>
<CAPTION>
                                                                                                    HAS HELD
                NAME, AGE                                                                            PRESENT
          AND PRESENT POSITION                PRIOR BUSINESS EXPERIENCE IN PAST FIVE YEARS       POSITION SINCE
- -----------------------------------------  --------------------------------------------------  -------------------
<S>                                        <C>                                                 <C>
Matthew P. Gonring, 38                     Director,  Public  Relations   to  January   1991;      March 1993
Vice President, Corporate Communications   Director, Corporate Communications to March 1993.

J. Bradford James, 47                      Vice  President,  Finance  &  Administration,  USG     January 1994
Vice President; President and Chief        Interiors, Inc. to March 1989; Director, Corporate
Executive Officer, USG Interiors, Inc.     Strategic  Planning,  USG  Corporation  and   Vice
                                           President,    Finance   &    Administration,   USG
                                           Interiors, Inc. to  January 1990; Vice  President,
                                           Financial  and Strategic Planning, USG Corporation
                                           to  January   1991;  Vice   President  and   Chief
                                           Financial  Officer, USG Corporation to March 1993;
                                           Senior Vice President and Chief Financial  Officer
                                           to December 1993.
John E. Malone, 50                         Vice  President and Controller, USG Corporation to     January 1994
Vice President and Treasurer; Vice         December 1993;  Vice  President  --  Finance,  USG
President -- Finance, USG International,   International, Ltd. since March 1993.
Ltd.
James S. Phillips, 64                      Vice  President, National  Accounts, United States     December 1990
Vice President, Corporate Accounts         Gypsum  Company  to  March  1989;  Vice  President
                                           National  Accounts,  USG  Corporation  to December
                                           1990.
Donald E. Roller, 56                       Executive  Vice  President  and  Chief   Operating     January 1994
Vice President; President and Chief        Officer,   USG  Interiors,  Inc.  to  March  1989;
Executive Officer, United States Gypsum    President  and   Chief  Executive   Officer,   USG
Company                                    Interiors,  Inc.  to January  1993;  President and
                                           Chief  Executive  Officer,  United  States  Gypsum
                                           Company since January 1993.
Stanley R. Sak, 53                         Group   Vice   President,   Ceiling   Group,   USG     January 1994
Vice President; President and Chief        Interiors, Inc.  to  March  1989;  Executive  Vice
Executive Officer, USG International,      President,  USG Interiors,  Inc. to  October 1990;
Ltd.                                       President  and   Chief  Executive   Officer,   USG
                                           International, Ltd. since October 1990.
S. Gary Snodgrass, 42                      Vice  President  Human  Resources,  USG Interiors,     January 1994
Vice President, Human                      Inc. to December  1989; Director, Corporate  Human
Resources -- Operations                    Resources   Planning,  USG  Corporation  and  Vice
                                           President, Human Resources, USG Interiors, Inc. to
                                           November  1990;  Director,  Human  Resources,  USG
                                           Corporation  to  September  1992;  Vice President,
                                           Management Resources  and  Employee  Relations  to
                                           December 1993.
Dean H. Goossen, 46                        General  Counsel  and  Secretary,  Arthur  J. Gal-     February 1994
Corporate Secretary                        lagher &  Co.  to 1989;  Vice  President,  General
                                           Counsel  and  Secretary, Xerox  Financial Services
                                           Life Insurance Company to February 1993; Assistant
                                           Secretary, USG Corporation to February 1994.
</TABLE>

                                       52
<PAGE>
<TABLE>
<CAPTION>
                                                                                                    HAS HELD
                NAME, AGE                                                                            PRESENT
          AND PRESENT POSITION                PRIOR BUSINESS EXPERIENCE IN PAST FIVE YEARS       POSITION SINCE
- -----------------------------------------  --------------------------------------------------  -------------------
<S>                                        <C>                                                 <C>
Frank R. Wall, 61                          Senior Vice President and General Manager, Western     January 1994
President and Chief Executive Officer,     Construction Products Region, United States Gypsum
L&W Supply Corporation                     Company to  January 1990;  Senior Vice  President,
                                           Operating  Services, United  States Gypsum Company
                                           to April 1993; Executive Vice President and  Chief
                                           Operating   Officer,  L&W  Supply  Corporation  to
                                           December 1993.
</TABLE>

EXECUTIVE COMPENSATION AND BENEFITS

    The  discussion  that  follows  has  been  prepared  based  on  the   actual
compensation  paid and  benefits provided  by the  Corporation to  the five most
highly compensated  executive officers  of  the Corporation  (collectively,  the
"Named  Executives"), for services  performed during 1993  and the other periods
indicated.  This  historical   data  is  not   necessarily  indicative  of   the
compensation and benefits that may be provided to such persons in the future.

    In  general,  the  Prepackaged Plan  provided  for the  continuation  by the
Corporation of the existing  employment, compensation and benefit  arrangements.
The  Prepackaged Plan resulted in a substantial  reduction on May 6, 1993 in the
amounts otherwise potentially payable to the Named Executives in 1994 under  the
Corporation's   three-year  Incentive  Recovery  Program  (the  "IRP")  and  the
concurrent cash settlement of  such reduced awards.  Although no further  awards
will  be made to the  Named Executives under the  IRP, the Named Executives were
eligible for incentive  awards under  the Corporation's  1993 Annual  Management
Incentive Program.

                                       53
<PAGE>
                           SUMMARY COMPENSATION TABLE

    The  following  table summarizes  for the  years indicated  the compensation
awarded to, earned by or paid to  the Named Executives for services rendered  in
all capacities to the Corporation and its subsidiaries.

<TABLE>
<CAPTION>
                                                                                    LONG TERM COMPENSATION
                                                ANNUAL COMPENSATION         ---------------------------------------
                                         ---------------------------------
                                                                  OTHER               AWARDS              PAYOUTS
                                                                 ANNUAL     ---------------------------  ----------   ALL OTHER
                                                                 COMPEN-      RESTRICTED     OPTIONS/       LTIP       COMPEN-
NAME AND PRINCIPAL POSITION               SALARY      BONUS      SATION      STOCK AWARDS      SARS       PAYOUTS      SATION
  (AS OF JANUARY 1, 1994)       YEAR        ($)      ($)(A)      ($)(B)         ($)(C)        (#)(D)       ($)(E)      ($)(F)
- ----------------------------  ---------  ---------  ---------  -----------  --------------  -----------  ----------  -----------
<S>                           <C>        <C>        <C>        <C>          <C>             <C>          <C>         <C>
Eugene B. Connolly              1993     $ 612,500  $ 717,624  $    52,952        --            250,000  $1,164,005  $    42,426
 Chairman of the Board and      1992       555,000     --          --             --            --           --              530
 CEO                            1991       475,000     --          --         $  213,750        --           --             530
Anthony J. Falvo, Jr.           1993       473,750    543,120      --            --             50,000      800,168      32,869
 Vice Chairman (retired         1992       432,500     --          --            --             --           --             530
 February 28, 1994)             1991       376,667     --          --            142,500        --           --             530
P. Jack O'Bryan Senior Vice     1993       280,000    255,096      --            --            100,000      470,448      17,739
 President and Chief            1992       256,000     --          --            --             --           --             530
 Technology Officer             1991       236,750     --          --             83,125        --           --             530
Donald E. Roller Vice           1993       280,000    255,096      --            --            100,000      446,614      17,574
 President; President and       1992       250,000     --          --            --             --           --             530
 CEO, United States Gypsum      1991       233,333     --          --             83,125        --           --             530
 Company
Harold E. Pendexter, Jr.        1993       269,583    250,614      --            --            100,000      408,524      17,739
 Senior Vice President and      1992       242,500     --          --            --             --           --             530
 Chief Administrative           1991       210,000     --          --             83,125        --           --             530
 Officer
</TABLE>

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

(a)   Reflects  payments  arising  from   cash  award  opportunities  under  the
    Corporation's 1993 Annual Management  Incentive Program which were  afforded
    to  the Named Executives upon termination of the IRP referred to in footnote
    (e). The amounts  shown are  taken into  account for  purposes of  computing
    benefits  under  the  Corporation's  retirement  plans.  None  of  the Named
    Executives received an annual cash bonus for 1992 or 1991.

(b) Mr.  Connolly's  Other Annual  Compensation  for 1993  included  $14,100  in
    automobile  allowance and $16,724  as the estimated  cost of equivalent life
    insurance provided by  the Corporation's  executive death  benefit plan;  no
    other   Named  Executive   had  perquisites  and   other  personal  benefits
    aggregating the lesser of either $50,000  or 10 percent of salary and  bonus
    for  1993, and none  of the Named  Executives had such  perquisites or other
    personal benefits for 1992 or 1991.

(c) The amounts shown reflect the value (determined by the closing price of  the
    Corporation's  common stock on  the New York  Stock Exchange on  the date of
    grant) of  grants  of  restricted  stock  awards  made  in  1991  under  the
    Management  Performance Plan.  The shares subject  to some  such awards were
    originally scheduled to  vest no  later than  the tenth  anniversary of  the
    applicable  date of  grant, subject to  acceleration upon  the attainment of
    specified performance  objectives,  and the  awards  included the  right  to
    receive  dividends paid to stockholders. None of the restricted stock awards
    were originally scheduled to vest in less than three years from the date  of
    grant. No dividends were paid by the Corporation in 1991, 1992, or 1993. The
    shares subject to such awards were reduced proportionally as a result of the
    one  for 50 reverse  stock split effected by  the Prepackaged Plan. Although
    none of such shares had vested as of December 31, 1993, the Compensation and
    Organization Committees of  the Board  of Directors  determined in  November
    1993  to accelerate the vesting of  all outstanding restricted stock awards,
    including the awards held by the  Named Executives in the amounts  indicated
    in  the next sentence,  to February 14,  1994. As of  December 31, 1993, the
    aggregate number of restricted shares held  by each of the Named  Executives
    and the aggregate value thereof, determined with reference to closing prices
    on  such date,  were as follows:  Mr. Connolly, 3,852  shares, $112,671; Mr.
    Falvo, 2,628  shares,  $76,869;  Mr. O'Bryan,  1,528  shares,  $44,694;  Mr.
    Roller, 1,480 shares, $43,290; and Mr. Pendexter, 1,329 shares, $38,873.

(d)  Option awards in 1993 were granted effective June 1, 1993. No option awards
    were granted  to the  Named Executives  in 1992  or 1991  and option  awards
    outstanding  as of May  6, 1993 were cancelled  without consideration by the
    terms of the Prepackaged Plan.

(e) Reflects cash settlements of  reduced awards, otherwise potentially  payable
    in  1994,  in  connection  with  termination  of  the  IRP  pursuant  to and
    concurrently with the  effectiveness of  the Prepackaged  Plan. The  amounts
    shown  are taken into  account for purposes of  computing benefits under the
    Corporation's retirement  plans.  None  of  the  Named  Executives  received
    long-term incentive plan payouts in 1992 or 1991.

                                       54
<PAGE>
(f)   All Other  Compensation for the  Named Executives for  each year consisted
    solely  of   matching  contributions   from  the   Corporation  to   defined
    contribution plans.

                   OPTION/SAR GRANTS IN LAST FISCAL YEAR (A)

<TABLE>
<CAPTION>
                                                   INDIVIDUAL GRANTS                        POTENTIAL REALIZABLE VALUE
                               ----------------------------------------------------------   AT ASSUMED ANNUAL RATES OF
                                 SECURITIES                                                STOCK PRICE APPRECIATION FOR
                                 UNDERLYING       % OF TOTAL                                      OPTION TERM(C)
                                OPTIONS/SARS     OPTIONS/SARS      EXERCISE                ----------------------------
                                  GRANTED         GRANTED TO         PRICE     EXPIRATION       5%             10%
NAME                               (#)(B)      EMPLOYEES IN 1993    ($/SH)        DATE          ($)            ($)
- -----------------------------  --------------  -----------------  -----------  ----------  -------------  -------------
<S>                            <C>             <C>                <C>          <C>         <C>            <C>
Eugene B. Connolly...........       250,000             14.9      $  10.3125     6/1/03    $   1,618,375  $   4,109,375
Anthony J. Falvo, Jr.........        50,000              3.0         10.3125     6/1/03          323,675        821,875
P. Jack O'Bryan..............       100,000              6.0         10.3125     6/1/03          647,350      1,643,750
Donald E. Roller.............       100,000              6.0         10.3125     6/1/03          647,350      1,643,750
Harold E. Pendexter, Jr......       100,000              6.0         10.3125     6/1/03          647,350      1,643,750
<FN>
- ------------------------
(a) No SARs were granted in 1993.
(b) Pursuant to the Prepackaged Plan, all option awards outstanding as of May 6,
    1993,  were cancelled without consideration. As permitted by the Prepackaged
    Plan, 2,788,350 shares of Common Stock were reserved for future issuance  in
    conjunction with stock options. Options for 1,673,000 shares of Common Stock
    were  granted  on  June  1,  1993 to  45  individuals,  including  the Named
    Executives, at  an exercise  price  of $10.3125  per  share, which  was  the
    average  of the  high and low  sales prices for  a share of  Common Stock as
    reported on the  NYSE Composite  Tape for  such date.  These options  become
    exercisable  at the rate of one-third of  the aggregate grant on each of the
    first three anniversaries of  the date of the  grant (except for the  option
    grant  with respect to 50,000 shares  to Mr. Falvo, which became exercisable
    on March 1, 1994 in conjunction with his retirement) and expire on the tenth
    anniversary of the date of grant except in the case of retirement, death  or
    disability in which case they expire on the earlier of the fifth anniversary
    of such event or the expiration of the original option term.
(c) Assumes  appreciation in  value from  the date  of grant  to the  end of the
    option term, at the indicated rate.
</TABLE>

    AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END
                               OPTION/SAR VALUES

<TABLE>
<CAPTION>
                                                          NUMBER OF UNEXERCISED     VALUE OF UNEXERCISED IN-
                                                         OPTIONS/SARS AT FISCAL     THE-MONEY OPTIONS/SARS AT
                           NUMBER OF SHARES                   YEAR-END (A)             FISCAL YEAR-END (A)
                          UNDERLYING OPTIONS   VALUE   --------------------------- ---------------------------
                              EXERCISED      REALIZED  EXERCISABLE  UNEXERCISABLE  EXERCISABLE  UNEXERCISABLE
NAME                             (#)            ($)        (#)           (#)           ($)           ($)
- ------------------------- ------------------ --------- ------------ -------------- ------------ --------------
<S>                       <C>                <C>       <C>          <C>            <C>          <C>
Eugene B. Connolly.......            0       $     0           0          250,000  $       0    $   4,718,750
Anthony J. Falvo, Jr.....            0             0           0           50,000          0          943,750
P. Jack O'Bryan..........            0             0           0          100,000          0        1,887,500
Donald E. Roller.........            0             0           0          100,000          0        1,887,500
Harold E. Pendexter,
 Jr......................            0             0           0          100,000          0        1,887,500
<FN>
- ------------------------
(a) No SARs were outstanding as of December 31, 1993.
</TABLE>

                                       55
<PAGE>
EMPLOYMENT AGREEMENTS

    In  order  to  assure  continued  availability  of  services  of  the  Named
Executives, the Corporation (or, in the case of Mr. Roller, U.S. Gypsum) entered
into  employment  agreements  (the  "Employment  Agreements")  with  the   Named
Executives  in 1993 which superseded  substantially identical agreements entered
into on various dates prior to 1993. The Employment Agreements, which do not  by
their terms provide for renewal or extension, terminate on December 31, 1996.

    The  Employment Agreements provide  for minimum annual  salaries at the then
current rate to be paid at normal pay periods and at normal intervals to Messrs.
Connolly ($585,000), Falvo  ($455,000), O'Bryan  ($280,000), Roller  ($280,000),
and  Pendexter  ($255,000), with  the minimum  annual salaries  deemed increased
concurrently  with  salary   increases  authorized  by   the  Compensation   and
Organization  Committee  of the  Board of  Directors. The  Employment Agreements
require that each  Named Executive devote  his full attention  and best  efforts
during  the term of such  agreement to the performance  of assigned duties. If a
Named Executive is discharged without cause  by the Corporation during the  term
of his Employment Agreement, he may elect to be treated as a continuing employee
under  such agreement, with  salary continuing at the  minimum rate specified in
such agreement or at the  rate in effect at the  time of discharge, if  greater,
for  the balance of the term of the  Employment Agreement or for a period of two
years, whichever  is greater.  In the  event of  any such  salary  continuation,
certain  benefits will  be continued  at corresponding  levels and  for the same
period of time. If  a Named Executive  becomes disabled during  the term of  his
Employment  Agreement, his compensation continues for  the unexpired term of the
Employment Agreement at the rate in  effect at the inception of the  disability.
In  the event  of a Named  Executive's death  during the term  of his Employment
Agreement, one-half of the full  rate of compensation in  effect at the time  of
his  death will be  paid to his  beneficiary for the  remainder of the unexpired
term of the Employment Agreement.

    Each of  the  Named  Executives  has undertaken,  during  the  term  of  his
Employment  Agreement  and  for  a  period of  three  years  thereafter,  not to
participate, directly or indirectly, in  any enterprise which competes with  the
Corporation  or any of its subsidiaries in any line of products in any region of
the United States. Each Named Executive has also agreed not to, at any time, use
for his  benefit or  the benefit  of others  or disclose  to others  any of  the
Corporation's  confidential information except as required by the performance of
his duties under his Employment Agreement.

TERMINATION COMPENSATION AGREEMENTS

    The Corporation is a party  to termination compensation agreements with  the
Named Executives which will terminate at the earlier of the close of business on
December 31, 1995, or upon the Named Executive attaining age 65.

    The  agreements  provide  certain benefits  in  the  event of  a  "change in
control" and termination of employment within three years thereafter or prior to
the Named Executive  attaining age 65,  whichever is earlier,  but only if  such
termination  occurs under one of several  sets of identified circumstances. Such
circumstances include termination by the Corporation other than for "cause"  and
termination  by the Named Executive for  "good reason." Each "change in control"
will begin a new three-year period  for the foregoing purposes. For purposes  of
the  agreements:  (i) a  "change  in control"  is  deemed to  have  occurred, in
general, if any person or group of persons acquires beneficial ownership of  20%
or  more  of the  combined voting  power of  the Corporation's  then outstanding
voting securities, if  there is a  change in a  majority of the  members of  the
Board  within  a two  year period  and in  certain other  events; (ii)  the term
"cause" is defined  as, in  general, the willful  and continued  failure by  the
Named  Executive  substantially  to  perform  his  duties  after  a  demand  for
substantial performance has been delivered or the willful engaging of the  Named
Executive  in misconduct which  is materially injurious  to the Corporation; and
(iii) "good reason"  for termination  by a  Named Executive  means, in  general,
termination  subsequent to a change in control based on specified changes in the
Named Executive's duties, responsibilities, titles, offices or office  location,
compensation levels and benefit levels or participation.

    The  benefits  include  payment of  full  base  salary through  the  date of
termination at the rate in effect at the time of notice of termination,  payment
of    any   unpaid   bonus    for   a   past   fiscal    year   and   pro   rata

                                       56
<PAGE>
payment of bonus for the then current fiscal year, and continuation through  the
date  of  termination of  all  stock ownership,  purchase  and option  plans and
insurance and other benefit plans. In the event of a termination giving rise  to
benefits  under the agreements, the applicable  Named Executive will be entitled
to payment of a  lump sum amount  equal to 2.99  times the sum  of (i) his  then
annual  base salary, computed at 12 times  his then current monthly pay and (ii)
his full year position par  bonus for the then  current fiscal year, subject  to
all  applicable  federal and  state  income taxes,  together  with payment  of a
gross-up amount to provide for applicable federal excise taxes in the event such
lump sum and  all other benefits  payable to the  Named Executive constitute  an
"excess  parachute payment" under the Internal  Revenue Code. The Corporation is
required to maintain in full force and effect until the earlier of (i) two years
after the date of any termination which gives rise to benefits under any of  the
agreements  and (ii) commencement by the Named Executive of full-time employment
with a new  employer, all insurance  plans and arrangements  in which the  Named
Executive  was entitled to participate immediately prior to his termination in a
manner which would give rise to  benefits under his agreement, provided that  if
such  participation  is barred,  the Corporation  will  be obligated  to provide
substantially similar benefits. In the event  of any termination giving rise  to
benefits  under  the  agreements,  the Corporation  is  required  to  credit the
applicable Named Executive with three years  of benefit and credited service  in
addition  to the total number of years of benefit and credited service the Named
Executive accrued under  the USG  Corporation Retirement  Plan. See  "Retirement
Plans"  below. If  the Named Executive  has a total  of less than  five years of
credited service following such crediting, he nonetheless will be treated as  if
he were fully vested under that Plan, but with benefits calculated solely on the
basis of such total benefit service.

    The  Corporation is obligated to pay to  each Named Executive all legal fees
and expenses incurred by him  as a result of a  termination which gives rise  to
benefits  under  his  agreement, including  all  fees and  expenses  incurred in
contesting or disputing any such termination or in seeking to obtain or  enforce
any right or benefit provided under such agreement. No amounts are payable under
such  agreements  if  the  Named Executive's  employment  is  terminated  by the
Corporation for "cause" or if the Named Executive terminates his employment  and
"good reason" does not exist.

    Although  Water Street's  ownership of  more than  20% of  the Corporation's
voting securities as  a result  of the  Restructuring constituted  a "change  in
control" under the agreements, each of the Named Executives agreed to waive this
occurrence. Such waivers do not constitute a waiver of any other occurrence of a
change in control.

    The  Corporation  has established  a so-called  "rabbi  trust" to  provide a
source of payment for benefits  payable under such agreements. Immediately  upon
any  change in control, the Corporation may  deposit with the trustee under such
trust an amount reasonably  estimated to be potentially  payable under all  such
agreements,  taking into account any previous  deposits. The Corporation did not
make any such deposit to the trust  as a result of Water Street's ownership.  In
the  event that the assets  of such trust in  fact prove insufficient to provide
for benefits payable  under all  such agreements,  the shortfall  would be  paid
directly by the Corporation from its general assets.

RETIREMENT PLANS

    The  following table  shows the annual  pension benefits  on a straight-life
annuity basis for  retirement at normal  retirement age under  the terms of  the
Corporation's  contributory retirement plan (the  "Retirement Plan"), before the
applicable offset of one-half of the primary social security benefits at time of
retirement. The table has been prepared for various compensation classifications
and representative years of credited service under the Plan. Each  participating
employee  contributes  towards  the  cost  of  his  or  her  retirement benefit.
Retirement benefits are based on the average rate of annual covered compensation
during the three  consecutive years of  highest annual compensation  in the  ten
years  of employment immediately preceding retirement. Participants become fully
vested after five years of continuous credited service.

                                       57
<PAGE>
                             RETIREMENT PLAN TABLE

<TABLE>
<CAPTION>
                                                                     YEARS OF CREDITED SERVICE
                                                  ---------------------------------------------------------------
COVERED COMPENSATION                                  20           25           30           35           40
- ------------------------------------------------  -----------  -----------  -----------  -----------  -----------
<S>                                               <C>          <C>          <C>          <C>          <C>
$ 200,000.......................................  $    64,000  $    80,000  $    96,000  $   112,000  $   128,000
  400,000.......................................      128,000      160,000      192,000      224,000      256,000
  600,000.......................................      192,000      240,000      288,000      336,000      384,000
  800,000.......................................      256,000      320,000      384,000      448,000      512,000
 1,000,000......................................      320,000      400,000      480,000      560,000      640,000
 1,200,000......................................      384,000      480,000      576,000      672,000      768,000
</TABLE>

    The  Named  Executives  participate  in  the  Retirement  Plan.  The   Named
Executives'  full years of continuous credited service at December 31, 1993 were
as follows: Mr. Connolly, 35;  Mr. Falvo, 38; Mr.  O'Bryan, 35; Mr. Roller,  33;
and  Mr. Pendexter, 36.  Compensation under the  Retirement Plan includes salary
and incentive  compensation (bonus  and  IRP payments)  for  the year  in  which
payments are made.

    Pursuant  to a supplemental retirement  plan, the Corporation has undertaken
to pay  any  retirement  benefits  otherwise  payable  to  certain  individuals,
including   the  Named  Executives,   under  the  terms   of  the  Corporation's
contributory Retirement Plan  but for  provisions of the  Internal Revenue  Code
limiting  amounts  payable  under  tax-qualified  retirement  plans  in  certain
circumstances. The  Corporation has  established a  so-called "rabbi  trust"  to
provide  a source of payment for  benefits under this supplemental plan. Amounts
are deposited in this trust from time to time to provide a source of payments to
participants as they retire  as well as for  periodic payments to certain  other
retirees.  In addition, the Corporation  has authorized establishment by certain
individuals, including the Named Executives, of special retirement accounts with
independent financial  institutions  as  an  additional  means  of  funding  the
Corporation's obligations to make such supplemental payments.

DIRECTOR COMPENSATION

    Directors who are not employees of the Corporation are currently entitled to
receive  a retainer of $6,000 per  quarter plus a fee of  $900 for each Board or
Board committee meeting attended, together with reimbursement for  out-of-pocket
expenses  incurred  in connection  with attendance  at meetings.  A non-employee
director serving as chairman of a committee is entitled to receive an additional
retainer of $1,000 per quarter for  each such chairmanship. Additional fees  for
pre-meeting  consultations may be paid  as applicable to non-employee directors,
the amount of such fees to bear a reasonable relationship to the regular meeting
fee of  $900 and  the  customary length  of a  meeting  of the  Board  committee
involved.  No director of  the Corporation has received  any compensation of any
kind for  serving as  a  director while  also serving  as  an officer  or  other
employee of the Corporation or any of its subsidiaries.

    In  the past,  the Corporation has  entered into  consulting agreements with
retiring non-employee directors who had specified minimum periods of service  on
the  Board.  Those agreements  continued the  annualized  retainer which  was in
effect in each instance at the time  of retirement from the Board in return  for
an undertaking to serve in an advisory capacity and to refrain from any activity
in  conflict or in competition with the Corporation. The Board has determined to
continue to  offer  such  agreements  on  a  case-by-case  basis  but  also  has
determined to limit any such agreement to a term not to exceed five years.

1994 STOCK OPTION GRANTS

    Options  for 933,000 shares of Common Stock were granted on February 9, 1994
to 76 officers  and key  managers, none  of whom is  a Named  Executive, at  the
exercise  price of $32.5625  per share. These options  become exercisable in the
years 1995 through 1997.

                                       58
<PAGE>
                           OWNERSHIP OF COMMON STOCK

SELLING STOCKHOLDER AND ITS AFFILIATES

    The following table sets forth certain information regarding the  beneficial
ownership  of the Common Stock of the  Selling Stockholder and its affiliates as
of December 31, 1993 and as  adjusted to reflect the Selling Stockholder's  sale
of  shares in the Offering. See  "Certain Relationships and Related Transactions
- -- Agreement with Water Street Entities."

<TABLE>
<CAPTION>
                                         SHARES OWNED BEFORE                              SHARES OWNED
                                             THE OFFERING             SHARES           AFTER THE OFFERING
                                    ------------------------------     BEING     ------------------------------
NAME AND ADDRESS                      NUMBER(A)      PERCENT(B)       OFFERED      NUMBER(A)      PERCENT(B)
- ----------------------------------  -------------  ---------------  -----------  -------------  ---------------
<S>                                 <C>            <C>              <C>          <C>            <C>
Water Street Corporate Recovery
Fund I, L.P. and its affiliates...     16,105,840           43%       5,500,000     10,605,840           24%
85 Broad Street
New York, New York 10004
<FN>
- ------------------------
(a)   Water Street owns directly 15,893,231  shares of Common Stock and  116,070
      Warrants  that  are  currently  exercisable.  Goldman,  Sachs  &  Co. owns
      directly 96,539 shares  of Common  Stock and,  as the  general partner  of
      Water  Street, may be deemed to be  the beneficial owner of the 15,893,231
      shares of  Common  Stock and  116,070  Warrants owned  directly  by  Water
      Street.  Such shares  and Warrants may  also be deemed  to be beneficially
      owned by The  Goldman Sachs Group,  L.P., one of  the general partners  of
      Goldman,  Sachs & Co.  Goldman, Sachs &  Co. and The  Goldman Sachs Group,
      L.P. disclaim beneficial ownership  of shares and  Warrants held by  Water
      Street  to the  extent partnership interests  in Water Street  are held by
      persons other than Goldman, Sachs & Co., The Goldman Sachs Group, L.P. and
      their affiliates.
(b)   Based  on  37,158,085  shares  outstanding  prior  to  the  Offering   and
      44,158,085 shares outstanding after the Offering.
</TABLE>

OTHER 5% STOCKHOLDERS

    Other  than the Selling Stockholder and  its affiliates, the following table
presents the beneficial ownership,  as of February 23,  1994, of the only  other
person  known to the Corporation to beneficially  own more than 5% of the Common
Stock.

<TABLE>
<CAPTION>
                                                                      AMOUNT OF BENEFICIAL     PERCENT OF
NAME AND ADDRESS OF BENEFICIAL OWNER                                        OWNERSHIP             CLASS
- --------------------------------------------------------------------  ---------------------  ---------------
<S>                                                                   <C>                    <C>
FMR Corp.(a)........................................................          1,922,400              5.2%
83 Devonshire Street
Boston, MA 02109
<FN>
- ------------------------
(a)   Based solely on  a Schedule  13G filed  with the  Securities and  Exchange
      Commission  and  certain  information  received  by  the  Corporation from
      Fidelity Management  & Research  Company,  as of  February 23,  1994,  FMR
      Corp., a parent holding company, had sole voting and investment power with
      respect  to  33,600  shares, and  sole  investment power  with  respect to
      1,888,800 shares. Fidelity  Management & Research  Company, an  investment
      advisor,  and Fidelity Management Trust Company, a bank, both wholly owned
      subsidiaries of FMR Corp.,  through certain funds  or accounts managed  or
      advised   by  them,  beneficially  owned   1,888,800  and  33,600  shares,
      respectively. Edward C. Johnson,  III, Chairman of FMR  Corp. owns 34%  of
      the  outstanding voting common  stock of FMR  Corp. Various Johnson family
      members and trusts for the benefit of Johnson family members own FMR Corp.
      voting common stock.  These Johnson family  members, through their  owner-
      ship  of voting common stock, form a controlling group with respect to FMR
      Corp.
</TABLE>

DIRECTORS AND EXECUTIVE OFFICERS
    The following table sets forth information  as of January 1, 1994  regarding
the  beneficial ownership  of Common  Stock by  each current  director and Named
Executive and by all current directors and

                                       59
<PAGE>
executive officers of the Corporation as a group (30 persons). Such  information
is  derived from  the filings made  with the  SEC by such  persons under Section
16(a) of  the Exchange  Act. The  totals  include any  shares allocated  to  the
accounts   of  those  individuals  through  December  31,  1993  under  the  USG
Corporation Investment Plan.

<TABLE>
<CAPTION>
                                                            SHARES
                                                         BENEFICIALLY     PERCENT
NAME                                                        OWNED       OF CLASS(A)
- -------------------------------------------------------  ------------  -------------
<S>                                                      <C>           <C>
Robert L. Barnett......................................            20
Keith A. Brown.........................................       119,256
W. H. Clark............................................         2,248
Eugene B. Connolly.....................................         7,789
James C. Cotting.......................................            20
Lawrence M. Crutcher...................................         1,800
Wade Fetzer III........................................           (b)
David W. Fox...........................................           112
William C. Foote.......................................         1,268
Philip C. Jackson, Jr..................................         1,963
Marvin E. Lesser.......................................           500
P. Jack O'Bryan........................................         5,029
Harold E. Pendexter, Jr................................         5,085
Donald E. Roller.......................................         4,970
John B. Schwemm........................................           154
Judith A. Sprieser.....................................             0
Alan G. Turner.........................................             0
Barry L. Zubrow........................................           (b)
All current directors and present executive officers as
 a group (30 persons), including those current
 directors and Named Executives named above............       165,228
<FN>
- ------------------------
(a)   Total beneficial ownership of 165,228 shares of Common Stock by members of
      the group  identified above  represents approximately  0.4% of  the  total
      outstanding  shares  of Common  Stock, excluding  the shares  that Messrs.
      Fetzer and Zubrow may  be deemed to beneficially  own as described in  the
      following note. No director had a right to acquire beneficial ownership of
      any  shares of Common Stock within 60 days after January 1, 1994 except as
      described as follows and  in note (b) below:  Warrants that are  currently
      exercisable  are  as follows:  Mr. Brown,  16,458 Warrants;  Mr. Connolly,
      1,003 Warrants;  Mr. Fox,  19  Warrants; Mr.  Jackson, 879  Warrants;  Mr.
      O'Bryan,  831  Warrants;  Mr.  Pendexter, 619  Warrants;  Mr.  Roller, 975
      Warrants; Mr.  Schwemm,  25  Warrants.  Warrants  held  by  directors  and
      executive  officers  as  a group  totaled  138,137. The  above  table also
      excludes options to purchase  an aggregate of  1,370,000 shares of  Common
      Stock which are not exercisable within 60 days after January 1, 1994.
(b)   Messrs.  Fetzer and Zubrow are general partners of Goldman, Sachs & Co. As
      general partners,  Messrs. Fetzer  and  Zubrow may  be  deemed to  be  the
      beneficial owners of shares beneficially owned or held by Goldman, Sachs &
      Co.  and  its affiliates,  including Water  Street  and The  Goldman Sachs
      Group, L.P. As described above, Goldman, Sachs & Co. owns directly  96,539
      shares of Common Stock and, as the general partner of Water Street, may be
      deemed to be the beneficial owner of the 15,893,231 shares of Common Stock
      and  116,070 Warrants owned  directly by Water  Street. Messrs. Fetzer and
      Zubrow disclaim beneficial  ownership of  such shares  and Warrants  other
      than  to  the  extent  such  ownership  corresponds  to  their  respective
      percentage interests in  Goldman, Sachs  & Co., The  Goldman Sachs  Group,
      L.P. and Water Street.
</TABLE>

                                       60
<PAGE>
                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

AGREEMENT WITH WATER STREET ENTITIES

    On  February  25,  1993,  the  Corporation  entered  into  the  Water Street
Agreement. The Water  Street Agreement,  among other things,  (i) restricts  the
Water  Street Entities from purchasing, or offering or agreeing to purchase, any
shares of Common Stock or other voting securities of the Corporation, except for
Permitted  Acquisitions  (as  defined  in   the  Water  Street  Agreement)   and
acquisitions  by any  Water Street Entity  other than  Water Street of  up to an
aggregate of 10% of the then outstanding shares of Common Stock in the  ordinary
course  of its business;  (ii) requires (a)  Water Street to  vote all shares of
Common Stock and other voting  securities of the Corporation beneficially  owned
by it and (b) the other Water Street Entities to vote all shares of Common Stock
beneficially  owned by them in  excess of 10% of  the then outstanding shares of
Common Stock, in  each case, in  the same proportion  as the votes  cast by  all
other  holders of Common  Stock and other voting  securities of the Corporation,
subject to certain exceptions described below; (iii) places restrictions on  the
ability  of the Water Street Entities to  transfer shares of Common Stock to any
person, except for (a) sales consistent with  Rule 144 of the Securities Act  of
1933, (b) underwritten public offerings, (c) persons not known to be 5% holders,
(d)  pledgees who agree  to be bound  by certain provisions  of the Water Street
Agreement, (e) in  the case  of Water  Street, distributions  to Water  Street's
partners in accordance with the governing partnership agreement, (f) pursuant to
certain tender or exchange offers for shares of Common Stock and (g) pursuant to
transactions  approved by  the Board;  (iv) provides  Water Street  with certain
rights to nominate directors  to the Board and  Finance Committee (as  described
below);  (v)  requires the  maintenance  of directors'  and  officers' liability
insurance and  indemnification  rights;  (vi) requires  that  the  Corporation's
shareholder  rights plan  provide temporary  exemptions for  ownership of Common
Stock by the Water Street Entities; (vii) provides Water Street with four demand
registrations  and  unlimited  piggyback   registrations,  subject  to   certain
limitations  described  below; and  (viii) provides  for indemnification  by the
Corporation of Water Street, its underwriters and related parties for securities
law claims  related to  any  demand or  piggyback registration  contemplated  in
clause (vii) above.

    In  connection  with  the  Restructuring,  Water  Street  nominated  two New
Directors to the Board, Wade Fetzer III and Barry L. Zubrow. See "Management  --
Directors  of the Corporation." In the event that the Water Street Directors are
removed from office without the consent  of Water Street, then the  restrictions
on  the Water Street Entities relating to (i) the purchases of voting securities
of the  Corporation  other  than  Permitted Acquisitions,  (ii)  the  voting  of
securities  of the Corporation and (iii) the transfer of shares of Common Stock,
as described above,  shall terminate.  These restrictions  shall also  terminate
upon  the earliest to occur of: (i)  the consummation of a merger, consolidation
or other  business  combination  to  which  the  Corporation  is  a  constituent
corporation,  if  the stockholders  of the  Corporation immediately  before such
merger, consolidation or combination  do not own more  than 50% of the  combined
voting  power  of  the  then  outstanding  voting  securities  of  the surviving
corporation, (ii) the Board consisting of  a majority of directors not  approved
by  a vote of the  directors serving at the time  the Water Street Agreement was
executed, and (iii)  the tenth  anniversary of  the Water  Street Agreement.  In
addition,  the restrictions on  purchases of voting  securities and transfers of
Common Stock shall  also terminate upon  the Water Street  Entities owning  less
than 5% of the then outstanding shares of Common Stock.

    Furthermore,  the Water  Street Entities will  not be subject  to the voting
restrictions contained in the Water Street Agreement if, among other things: (i)
the Corporation defaults on the payment of principal or interest required to  be
paid  pursuant to any indebtedness if  the aggregate amount of such indebtedness
is $25  million  or  more;  (ii)  the principal  of  any  of  the  Corporation's
indebtedness  is declared due  and payable prior  to the date  on which it would
otherwise become due and payable if the aggregate amount of such indebtedness is
$25 million  or more;  (iii) any  person  other than  Water Street  becomes  the
beneficial  owner of  more than  10% of  the then  outstanding shares  of Common
Stock; or (iv) the Corporation fails to comply with (x) the following  financial
covenants:  a minimum senior  interest coverage ratio,  a minimum total interest
coverage ratio,  a  minimum fixed  charge  coverage ratio,  a  minimum  adjusted
cumulative  net  worth, and  a maximum  leverage  ratio or  (y) a  minimum total
interest coverage ratio of 0.63 for a specified coverage period in 1993 and  for
the first quarter of 1994, 0.84 for the second

                                       61
<PAGE>
quarter  of 1994,  0.97 for the  third quarter of  1994 and 1.14  for the fourth
quarter of 1994, provided that (a) such financial covenants shall be  calculated
based   only  on   domestic  revenues  unless   the  Corporation's  non-domestic
consolidated revenues exceed 35% of its total consolidated revenues, and (b) the
Corporation shall not  be deemed out  of compliance  in the event  of a  breach,
after 1994 and prior to 1998, of the senior interest coverage ratio or the total
interest  coverage ratio unless there shall also  exist at such time a breach of
the fixed charge  coverage ratio or  in the event  of a breach,  after 1994  and
prior  to 1998, of the fixed charge coverage ratio unless there shall also exist
at such time a breach of either the senior interest coverage ratio or the  total
interest   coverage  ratio.  See  "Description  of  Credit  Agreement."  If  the
Corporation complies with the financial covenants within the two fiscal quarters
following the  first failure  to  comply, the  voting restrictions  shall  apply
again.  However, if the Corporation  thereafter fails to comply  with any of the
financial covenants, the voting restrictions shall terminate.

    The provision of registration rights to  Water Street is subject to  certain
limitations,  including but not limited to  the following: (i) of Water Street's
four demand registrations, the Corporation  shall pay the registration  expenses
(other  than commissions and  discounts of underwriters)  for two registrations,
and the Corporation and Water Street shall each pay one-half of the registration
expenses  (other  than  commissions  and  discounts  of  underwriters)  for  two
registrations; and (ii) other than in connection with the Offering, Water Street
(and  any Water Street Entity that receives  a distribution of Common Stock from
Water Street and owns 5% or more of the then outstanding shares of Common Stock)
shall not request  a demand registration  of Common Stock  during any period  in
which the Corporation is actively engaged in a registered distribution of Common
Stock  until  90 days  after the  effective date  of the  registration statement
relating to such distribution. With respect to the Offering, Water Street  (and,
if  it  distributes Common  Stock  to its  partners,  those partners)  shall not
request a demand registration  of Common Stock during  the 120-day period  after
the  effective date  of the Offering.  In addition, during  such 120-day period,
Water Street and Goldman, Sachs & Co. shall not sell or otherwise dispose of any
shares of Common Stock or Warrants, except that, at any time after 90 days after
the effective  date of  the Offering,  Water Street  may distribute  all or  any
portion  of its shares of Common Stock or Warrants to its partners in accordance
with its governing partnership agreement. In the event of any such  distribution
by  Water Street, the  partners (other than  Goldman, Sachs &  Co.) would not be
subject to the restriction on selling shares of Common Stock or Warrants  during
the remainder of the 120-day period referred to above. Except in the case of the
Offering,  the  Corporation and  Water Street  have  mutual piggyback  rights on
registrations initiated by either, generally on a 50-50 basis.

    The  Water  Street  Agreement   originally  provided,  subject  to   certain
exceptions,  that, in connection with the  first underwritten public offering of
Common Stock after the  Restructuring, the Corporation would  have the right  to
sell,  without participation  of Water  Street, up to  such number  of shares of
Common Stock as would yield an aggregate price to the public of $100,000,000 and
that, if a  greater number of  shares were to  be sold in  that offering,  Water
Street and the Corporation would each have the right to sell 50% of such greater
number  of shares.  In addition,  in connection  with such  offering, subject to
certain exceptions, the  Water Street Agreement  originally provided that  Water
Street  (and, if  it distributes Common  Stock to its  partners, those partners)
would not request  or demand  registration of  Common Stock  during the  180-day
period after the effective date of such offering, rather than the 120-day period
that  applies to the Offering. In  connection with the Offering, the Corporation
and Water Street have  entered into an amendment  to the Water Street  Agreement
that  reflects their mutual  determination that they would  sell in the Offering
the number  of shares  of  Common Stock  reflected on  the  cover page  of  this
Prospectus,  without  regard  to  such $100,000,000  limitation,  and  that such
120-day period would apply  in lieu of such  180-day period. The amendment  also
includes  certain provisions which are designed  to facilitate a distribution of
Common Stock by Water Street to its partners.

NOTE PLACEMENT

    Fidelity Management & Research Company and Fidelity Management Trust Company
may be deemed to beneficially own in  excess of 5% of the outstanding shares  of
Common  Stock.  See "Ownership  of Common  Stock." In  connection with  the Note
Placement, certain funds and accounts managed or advised by Fidelity  Management
& Research Company and Fidelity Management Trust Company

                                       62
<PAGE>
purchased  $150 million in aggregate principal amount of Senior 2001 Notes. Such
purchasers exchanged approximately $30 million aggregate principal amount of the
Corporation's outstanding Senior 1996 Notes and $35 million aggregate  principal
amount  of  the  Corporation's  outstanding  Senior  1997  Notes  and  paid  the
approximately $85 million balance of the purchase price in cash.

                        DESCRIPTION OF CREDIT AGREEMENT

INTRODUCTION
    Pursuant to the Prepackaged Plan, the  Credit Agreement was entered into  by
the  Corporation, USG Interiors and the Bank Group. The Credit Agreement amended
and restated a previous  credit agreement which was  entered into in  connection
with  the 1988 Recapitalization. In connection with the Prepackaged Plan and the
implementation of the Credit Agreement, the following transactions occurred: (i)
the exchange of  $324 million of  principal and accrued  but unpaid interest  on
outstanding  term  loans for  Senior  2002 Notes;  (ii)  the extension  of final
maturity of the remaining principal of the term loans from 1996 to 2000 and  the
deferral  of all  scheduled principal  payments until  December 1994;  (iii) the
capitalization of $51  million in accrued  interest originally due  on or  after
December  31, 1991 and the issuance  of capitalized interest notes ("Capitalized
Interest Notes") to represent the capitalized amounts; (iv) the making available
(at  the  Corporation's  option  but  subject  to  certain  limitations  on  the
availability  of LIBOR pricing)  an annual interest rate  applicable to the term
loans and  the Revolving  Credit Facility  of LIBOR  plus 1  7/8% or  Citibank's
Alternate  Base Rate III ("Base Rate") plus  7/8%, with the option to capitalize
the amount  of  such  interest in  excess  of  LIBOR plus  1%  per  annum  (such
capitalized  interest to bear interest at an annual rate of LIBOR plus 2 1/4% or
Citibank's Base Rate plus 1 1/4% and mature in the years 1998 and 2000); (v) the
implementation of mandatory prepayment provisions, including an excess cash flow
sweep, that takes into account certain liquidity thresholds; (vi) the suspension
of all  financial  covenants through  January  1,  1995 and  providing  for  new
covenants  thereafter; (vii) the extension to 1998  of the maturity date of, and
the establishment of a maximum borrowing capacity of $175 million under the then
existing revolving credit facility,  including a $110  million letter of  credit
subfacility  (the "Revolving Credit  Facility"); and (viii)  the exchange of $16
million owed in  connection with  certain interest  rate swap  contracts for  an
equal  principal amount of Senior  2002 Notes and, in  addition, the exchange of
approximately $5  million  owed  in  connection with  such  interest  rate  swap
contracts  for  an  equal principal  amount  of Capitalized  Interest  Notes. In
connection with  the Restructuring,  all existing  defaults under  the  previous
credit  agreement were waived or cured.  Whenever defined terms under the Credit
Agreement, as amended,  are referred  to but  not defined  herein, such  defined
terms are incorporated herein by reference.

    On  August 10,  1993, the  parties to the  Credit Agreement  entered into an
amendment to the Credit Agreement (the "1993 Amendments"), pursuant to which (i)
scheduled bank term loan amortization payments totaling $95 million due in 1994,
1995 and 1996 were eliminated ($3 million was added to the final maturity of the
bank term  loan due  in 2000);  (ii) $9  million of  Capitalized Interest  Notes
originally  due  in 1998  were  paid; and  (iii)  the cash  sweep  mechanism was
modified to apply up to $165 million of cash otherwise subject to the cash sweep
mechanism in 1994, 1995  and 1996 to  repayment or purchase  of senior debt  due
prior  to  January  1,  1999  or  Bank Term  Loans,  at  the  discretion  of the
Corporation. In  addition, $46  million of  Capitalized Interest  Notes and  $92
million  of Bank Term Loans were exchanged for Senior 2002 Notes. Following such
transactions, approximately $1 million principal amount of Capitalized  Interest
Notes  remained outstanding. Such  remaining amount was  repaid in December 1993
and accordingly, no Capitalized Interest Notes are outstanding.

    In connection with the Transactions, the parties to the Credit Agreement are
entering into the Credit  Agreement Amendments, pursuant  to which, among  other
things,  the size  of the  Revolving Credit  Facility will  be increased  by $70
million and the mandatory prepayment provisions and cash sweep mechanism will be
modified as described below.  The Credit Agreement  Amendments require that  (i)
$75  million of the proceeds  of the Note Placement be  used to prepay Bank Term
Loans in the order of maturity (thus fully prepaying the scheduled  amortization
payment due December 31, 1997 and partially prepaying the scheduled amortization
payment due December 31, 1998) and (ii) up to $65 million of the proceeds of the
Offering  be used to prepay  Bank Term Loans in the  order of maturity (thus, in
such event,

                                       63
<PAGE>
fully prepaying the remaining portion of the scheduled amortization payment  due
December  31, 1998). Giving effect to  such prepayments, the remaining scheduled
amortization of the Bank  Term Loans will  consist of $125  million in 1999  and
$183 million in 2000.

CREDIT AGREEMENT OVERVIEW

ELIMINATION OF ABILITY TO CAPITALIZE INTEREST
    The  Credit Agreement  Amendments provide  that USG's  ability to  defer the
payment of interest in excess of  LIBOR plus 1% by issuing Capitalized  Interest
Notes will be terminated.

REVOLVING CREDIT FACILITY
    The  maximum  borrowing capacity  under  the Revolving  Credit  Facility, as
currently  in  effect,  is  $175  million.  As  part  of  the  Credit  Agreement
Amendments,  the size of the Revolving Credit  Facility will be increased by $70
million. The increased amount  of the Revolving Credit  Facility is intended  to
provide the Corporation with additional funds for the purchase or payment of the
Senior  1996 Notes  and Senior 1997  Notes remaining after  the Transactions are
consummated. Accordingly, the Credit Agreement Amendment limits borrowing of the
additional  commitment  (the  "Note  Purchase  Facility")  for  the  purpose  of
purchasing  or paying  Senior 1996  Notes and  Senior 1997  Notes. The Revolving
Credit Facility's maturity date is July 13, 1998. Material conditions  precedent
to  borrowing under the Revolving Credit Facility are limited to the accuracy of
certain representations  and  warranties,  the absence  of  injunctions  and  of
certain  events of  default, such  as payment  defaults, bankruptcy  and certain
cross-defaults to other indebtedness of the Corporation exceeding $25 million in
principal amount,  unstayed  judgments  and  intentional  breaches  of  negative
covenants,  but prior  to January  1, 1995  do not  include the  satisfaction of
financial covenants or a material adverse change condition precedent.

LETTER OF CREDIT SUBFACILITY
    The Revolving Credit Facility also  includes a letter of credit  subfacility
(the  "Letter  of Credit  Subfacility"). The  Issuing Bank  or Banks  will issue
letters of credit under the Letter  of Credit Subfacility ("Facility Letters  of
Credit") in amounts not to exceed $110 million in the aggregate.

CASH SWEEP MECHANISM
    Under  the Credit  Agreement as  currently in  effect, within  30 days after
January 15th of each year (a "Test  Date"), commencing on January 15, 1994,  the
amount  of  "Cash  Available  for  Sweep" is  calculated  in  accordance  with a
pre-determined formula and paid to holders of  the Bank Term Loans on or  before
February  15th of each year; provided that,  in the case of Test Dates occurring
on January 15, 1994, 1995 and 1996 payments shall instead be made: (i) first, up
to $165 million to either the Corporation's public debt having maturities  prior
to  January 1, 1999 or Bank Term Loans  in order of maturity, as the Corporation
shall elect in its discretion (PROVIDED, that after the payment or repurchase in
full of such  public debt  (which may occur  as a  result of an  equity or  debt
offering),  such $165 million of Cash  Available for Sweep (or remaining portion
thereof) shall be applied 90%  to the Bank Term Loans  in order of maturity  and
10%  to the Corporation as Retained Amounts); and (ii) second, two-thirds to the
Bank Term  Loans  in order  of  maturity and  one-third  to the  Corporation  as
Retained  Amounts  (until  such Retained  Amounts,  when added  to  the Retained
Amounts described in clause (i), equal $50  million, at which time 100% of  Cash
Available  for  Sweep  would be  applied  to the  Bank  Term Loans  in  order of
maturity). "Cash Available for Sweep" means, with respect to each Test Date,  an
amount  equal to the  product of (i)  the "Sweep Percentage"  applicable to such
Test Date and (ii)  the excess, if  any, of the  "Available Liquidity" for  such
Test  Date  over  the  "Minimum  Liquidity"  for  such  Test  Date.  The  "Sweep
Percentage" is 100% for the 1994 through 1996 Test Dates, inclusive, 90% for the
1997 and  1998 Test  Dates, and  85% for  the 1999  and subsequent  Test  Dates.
"Available  Liquidity" for  any Test  Date means  (i) the  daily average  of all
domestic cash and cash balances during the applicable Test Period, excluding net
proceeds of certain debt and equity issuances (which are separately required  to
be  applied to repay  the Bank Term  Loans and/or senior  debt securities); PLUS
(ii)  the  daily  average  of   all  cash  of  the  Corporation's   non-domestic
Subsidiaries  in excess of  certain minimum cash  balances during the applicable
Test Period, subject  to certain  limitations and  adjustments for  repatriation
taxes  and exchange  rates; PLUS  (iii) the  average daily  amount available for
borrowing under the  Revolving Credit Facility  (not including any  availability
under  the Note Purchase Facility) during the applicable Test Period; SUBJECT TO

                                       64
<PAGE>
(iv) certain adjustments for changes in working capital. "Minimum Liquidity" for
any Test Date means (i) the sum of the Retained Amount for all prior Test Dates,
net of the amount thereof utilized  to fund additional Capital Expenditures  and
repurchases of senior debt securities (through the maturity dates thereof); plus
(ii)  the amount set forth below opposite such Test Date; minus (iii) the Senior
Note Prepayment Amount for such Test Date:

<TABLE>
<CAPTION>
                TEST DATE                                    MINIMUM LIQUIDITY
- ------------------------------------------  ----------------------------------------------------
<S>                                         <C>
1/15/94...................................      $100,000,000 (PLUS the Asbestos Adjustment)
1/15/95...................................                      100,000,000
1/15/96...................................                      100,000,000
1/15/97...................................                      200,000,000
1/15/98...................................                      135,000,000
Thereafter................................                      100,000,000
</TABLE>

    The "Asbestos Adjustment" will equal $40 million minus the actual  aggregate
amount  of payments made by U.S. Gypsum to settle property damage asbestos cases
in 1992 and  1993. The amount  of such  settlement payments for  1992 was  $21.7
million.  "Retained Amount"  means, for  any Test Date,  an amount  equal to the
product of (i) 100% minus the Sweep  Percentage for such Test Date and (ii)  the
excess,  if any, of the Available Liquidity  for such Test Date over the Minimum
Liquidity for such  Test Date. "Senior  Note Prepayment Amount"  means, for  any
Test   Date  on  or  after  January  15,  1997,  the  principal  amount  of  the
Corporation's public debt originally due during the same calendar year which has
been prepaid as of such Test Date out of funds other than any Retained Amounts.

    The Credit Agreement Amendments will  provide that the Sweep Percentage  for
the January 15, 1997 Test Date and for each Test Date thereafter shall be 50% if
(i)  the aggregate outstanding amount  of Bank Term Loans  at such time does not
exceed $148 million and (ii) USG's public senior debt is then rated at least  BB
by Standard & Poor's Corporation and Ba2 by Moody's Investors Service, Inc.

EVENTS OF DEFAULT
    The  Credit Agreement provides that if an  event of default occurs, then, in
the case  of an  event of  default involving  certain bankruptcy  or  insolvency
events, the maturity of loans made under the Credit Agreement will automatically
be accelerated and the obligation of the Senior Lenders to make future revolving
loans  or issue letters  of credit will terminate  or, in the  case of any other
event of default, so long as such event of default exists, the Requisite  Senior
Lenders  will be  entitled to  accelerate the maturity  of loans  made under the
Credit Agreement and terminate their  obligation to make future revolving  loans
or issue letters of credit.

    Events  of default include: failure to  pay any principal, interest or other
amount due to the Senior Lenders;  failure to pay other indebtedness,  including
subordinated  debt, if  the aggregate amount  of such other  indebtedness is $25
million or more  or any  breach or default  under any  instrument, agreement  or
indenture  relating to such indebtedness if  the effect thereof is to accelerate
or permit the holders  of such indebtedness to  accelerate the maturity of  such
indebtedness;  any  single stockholder  or group  acquiring 50%  or more  of the
Corporation's stock (directly or indirectly); failure to discharge a judgment or
writ of attachment involving an amount  exceeding $5 million, net of  insurance;
certain  events involving  the bankruptcy  or insolvency  of the  Corporation or
certain significant Restricted Subsidiaries; the invalidation or ineffectiveness
of any security agreement governing, or  any lien upon, collateral securing  the
obligations  under the Credit  Agreement; the incurrence  of certain termination
liabilities under  the  Employee Retirement  Income  Security Act  of  1974,  as
amended  ("ERISA"); and failure of the Corporation to meet covenants (subject to
certain grace periods), including  various financial covenants described  below.
The  events of default are applicable only to the Corporation and its Restricted
Subsidiaries.

AFFIRMATIVE COVENANTS
    Affirmative covenants under the Credit Agreement require the Corporation to,
among  other  things,  submit  periodic  financial,  labor,  environmental   and
litigation reports; maintain its corporate existence

                                       65
<PAGE>
and   franchises;   remain  qualified   to  do   business  in   all  appropriate
jurisdictions; comply with all requirements of  law; pay all taxes and  material
claims unless contested in good faith and covered by reserves in accordance with
GAAP;  permit members  of the  Bank Group to  inspect its  properties, books and
records; maintain its properties  in good repair  and maintain proper  insurance
policies;   and   maintain   licenses,  permits,   governmental   approvals  and
authorizations.

NEGATIVE COVENANTS
    The Credit Agreement contains negative covenants that cover: restrictions on
the incurrence of additional indebtedness, subject to certain exceptions;  sales
of assets outside the ordinary course of business, subject to certain exceptions
including  a blanket exception for  up to $20 million in  any fiscal year and $5
million in  any  single  transaction  or  group  of  related  transactions;  the
incurrence  of liens and encumbrances on the property of the Corporation and its
Restricted Subsidiaries; investments;  guarantees; dividends and  distributions,
and  payments  upon securities  junior in  right to  the Bank  Debt Obligations;
operating leases; mergers, consolidations or  sales, leases or transfers of  all
or  any substantial part of the business,  property or assets of the Corporation
or any of its Restricted Subsidiaries; acquisitions of the business, property or
assets of any person,  except for acquisitions  not exceeding certain  permitted
capital   expenditure  limits;  ERISA  prohibited  transactions;  amendments  to
corporate charter and by-laws; sale of subsidiaries; amendments of material debt
documents; sale and leaseback  transactions; prepayment (including  acquisitions
for value) of long-term debt; and certain other transactions and activities.

    The  negative covenants  in the  Credit Agreement  permit the  prepayment or
purchase with  Cash  Available  for  Sweep  of  the  Corporation's  senior  debt
securities  having maturities  prior to January  1, 1999; PROVIDED,  that to the
extent such prepayment or purchase involves  the payment of a premium in  excess
of  100% of the  face amount of any  such security, such  excess will reduce the
Corporation's existing or future Retained Amounts.

FINANCIAL COVENANTS

    From and after January 1, 1995, the Corporation will be required to  satisfy
the Financial Covenants set forth below:

    MINIMUM  SENIOR INTEREST COVERAGE RATIO.  The Senior Interest Coverage Ratio
for the Coverage Period ending with each fiscal quarter of each Fiscal Year  set
forth  below (commencing with  the first fiscal  quarter of 1995),  shall not be
less than the minimum ratio set forth below opposite such fiscal quarter:

<TABLE>
<CAPTION>
                                           MINIMUM                 MINIMUM
                                1995        RATIO       1996        RATIO
                              ---------  -----------  ---------  -----------
<S>                           <C>        <C>          <C>        <C>
Quarter                           1           1.00        1           2.20
                                  2           1.25        2           2.30
                                  3           1.75        3           2.40
                                  4           2.00        4           2.50
</TABLE>

<TABLE>
<CAPTION>
                                           MINIMUM                 MINIMUM
                                1997        RATIO       1998        RATIO
                              ---------  -----------  ---------  -----------
<S>                           <C>        <C>          <C>        <C>
Quarter                           1           2.50        1           2.80
                                  2           2.60        2           2.80
                                  3           2.70        3           2.80
                                  4           2.80        4           2.80
</TABLE>

<TABLE>
<CAPTION>
                                           MINIMUM                 MINIMUM
                                1999        RATIO       2000        RATIO
                              ---------  -----------  ---------  -----------
<S>                           <C>        <C>          <C>        <C>
Quarter                           1           2.80        1           2.80
                                  2           2.80        2           2.80
                                  3           2.80        3           2.80
                                  4           2.80        4           2.80
</TABLE>

                                       66
<PAGE>
    MINIMUM TOTAL INTEREST COVERAGE  RATIO.  The  Total Interest Coverage  Ratio
for  the Coverage Period ending with each fiscal quarter of each Fiscal Year set
forth below (commencing  with the first  fiscal quarter of  1995), shall not  be
less than the minimum ratio set forth below opposite such fiscal quarter:

<TABLE>
<CAPTION>
                                           MINIMUM                 MINIMUM
                                1995        RATIO       1996        RATIO
                              ---------  -----------  ---------  -----------
<S>                           <C>        <C>          <C>        <C>
Quarter                           1           1.00        1           2.05
                                  2           1.25        2           2.10
                                  3           1.75        3           2.15
                                  4           2.00        4           2.20
</TABLE>

<TABLE>
<CAPTION>
                                           MINIMUM                 MINIMUM
                                1997        RATIO       1998        RATIO
                              ---------  -----------  ---------  -----------
<S>                           <C>        <C>          <C>        <C>
Quarter                           1           2.25        1           2.40
                                  2           2.30        2           2.40
                                  3           2.35        3           2.40
                                  4           2.40        4           2.40
</TABLE>

<TABLE>
<CAPTION>
                                           MINIMUM                 MINIMUM
                                1999        RATIO       2000        RATIO
                              ---------  -----------  ---------  -----------
<S>                           <C>        <C>          <C>        <C>
Quarter                           1           2.40        1           2.40
                                  2           2.40        2           2.40
                                  3           2.40        3           2.40
                                  4           2.40        4           2.40
</TABLE>

    MINIMUM  FIXED CHARGE COVERAGE  RATIO.  The Fixed  Charge Coverage Ratio for
the Coverage Period  ending with  each fiscal quarter  of each  Fiscal Year  set
forth  below (commencing with  the first fiscal  quarter of 1995),  shall not be
less than the minimum ratio set forth below opposite such fiscal quarter:

<TABLE>
<CAPTION>
                                            MINIMUM                   MINIMUM
                                1995         RATIO        1996         RATIO
                              ---------  -------------  ---------  -------------
<S>                           <C>        <C>            <C>        <C>
Quarter                           1              1.0        1              1.3
                                  2              1.1        2              1.4
                                  3              1.1        3              1.4
                                  4              1.2        4              1.5
</TABLE>

<TABLE>
<CAPTION>
                                            MINIMUM
                                1997         RATIO
                              ---------  -------------
<S>                           <C>        <C>
Quarter                           1              1.5
                                  2              1.5
                                  3              1.5
                                  4              1.5
</TABLE>

    MINIMUM ADJUSTED CUMULATIVE NET WORTH.  The Adjusted Cumulative Net Worth as
of the  end of  each  Fiscal Year  set forth  below  and the  end of  the  three
immediately succeeding fiscal quarters shall not be less than the minimum amount
set forth below opposite such year:

<TABLE>
<CAPTION>
END OF FISCAL YEAR                                                              MINIMUM AMOUNT
- -----------------------------------------------------------------------------  -----------------
<S>                                                                            <C>
1995.........................................................................   $ 51,000,000
1996.........................................................................     102,000,000
1997.........................................................................     179,000,000
1998.........................................................................     244,000,000
1999.........................................................................     296,000,000
2000.........................................................................     345,000,000
</TABLE>

                                       67
<PAGE>
    LEVERAGE  RATIO.  The Leverage  Ratio as of the end  of each Fiscal Year set
forth below and  the end  of the  three immediately  succeeding fiscal  quarters
shall not be greater than the maximum amount set forth below opposite such year:

<TABLE>
<CAPTION>
END OF FISCAL YEAR                                                                 MAXIMUM RATIO
- -------------------------------------------------------------------------------  -----------------
<S>                                                                              <C>
1995...........................................................................          0.97
1996...........................................................................          0.93
1997...........................................................................          0.87
1998...........................................................................          0.81
1999...........................................................................          0.76
2000...........................................................................          0.70
</TABLE>

    MINIMUM  CURRENT  RATIO.    The  ratio  of  Consolidated  Current  Assets to
Consolidated Current Liabilities as  of the end of  each calendar quarter  shall
not  be less than the minimum ratio set forth below opposite such Fiscal Year in
which such quarter occurs:

<TABLE>
<CAPTION>
FISCAL YEAR                                                                        MINIMUM RATIO
- -------------------------------------------------------------------------------  -----------------
<S>                                                                              <C>
1995...........................................................................          1.05
1996...........................................................................          1.10
1997...........................................................................          1.15
1998...........................................................................          1.20
1999...........................................................................          1.20
2000...........................................................................          1.20
</TABLE>

    MAXIMUM CAPITAL EXPENDITURES.   Domestic  Capital Expenditures  made by  the
Corporation  and its U.S. Subsidiaries on a consolidated basis shall not exceed,
for any Fiscal Year, the sum of the following items:

     (i) The Base Capital Expenditure Allowance  for such year LESS the  amount,
if  any, of such  Base Capital Expenditure  Allowance which was  used during the
immediately preceding Fiscal Year under clause (ii) below;

    (ii) (a) the excess of  (1) the sum of  (x) the actual cumulative  principal
payments (for the period beginning on May 6, 1993) of the Term Loans as a result
of  mandatory  amortization  payments  through  such  date  and  (y)  the actual
cumulative prepayments  of Public  Debt  (including Investments  therein),  Term
Loans  and Capitalized Interest Loans, in each  case under this clause (y), as a
result of Cash Available for Sweep  over (2) the Projected Cumulative  Principal
Payments  (such  excess  being the  "Excess  Principal Payments")  LESS  (b) the
cumulative  amount  of   such  Excess  Principal   Payments  used  for   Capital
Expenditures  in all prior  years, PROVIDED, that  in no event  shall the amount
included under this  clause (ii)  for any  Fiscal Year  exceed 50%  of the  Base
Capital Expenditure Allowance for the immediately succeeding Fiscal Year;

    (iii) (a) the excess of the actual cumulative net cash proceeds arising from
the sale of assets occurring after January 1, 1992 over the Projected Cumulative
Asset  Sale Proceeds (the "Excess Sale Proceeds") LESS (b) the cumulative amount
of such Excess Sale  Proceeds used for Capital  Expenditures and Investments  in
all  prior years, PROVIDED, that in no  event shall any amount be included under
this clause (iii) for any  Fiscal Year if the sum  of (x) the actual  cumulative
principal  payments  of the  Term Loans  as a  result of  mandatory amortization
payments as of  the end of  the immediately  preceding Fiscal Year  and (y)  the
actual  cumulative prepayments  of Public Debt  (including Investments therein),
Term Loans and Capitalized Interest Loans,  in each case under this clause  (y),
as  a  result of  Cash Available  for Sweep  as  of the  end of  the immediately
preceding Fiscal Year (but including any prepayments of Cash Available for Sweep
made on or prior to  February 15th of the current  Fiscal Year) does not  exceed
the  Projected Cumulative  Principal Payments as  of the end  of the immediately
preceding Fiscal Year;

    (iv)  all  amounts  used  for  Capital  Expenditures  the  source  of  which
constitutes Project Financing;

                                       68
<PAGE>
    (v)  the cumulative amount  of the portion  of the Cash  Available for Sweep
which has been  retained by the  Company in  all prior Fiscal  Years (the  "Cash
Sweep Retention Amount") LESS the cumulative amount of such Cash Sweep Retention
Amount  used for Capital Expenditures and  other permitted purposes in all prior
years;

    (vi) the amount of Capital  Expenditures used for creating additional  plant
capacity,  PROVIDED, that (a) the aggregate  amount of such Capital Expenditures
under this clause (vi) for all Fiscal Years shall not exceed $30,000,000 and (b)
at least thirty  days prior to  making or  becoming committed to  make any  such
Capital  Expenditures,  the Corporation  has notified  the  Agents thereof  in a
writing which describes the additional  plant capacity and the business  purpose
therefor;

   (vii)  Capital Expenditures  for assets the  purchase price of  which is paid
with the Common Stock of the Company; and

   (viii) the aggregate amount of  the Base Capital Expenditures Allowances  for
all prior Fiscal Years which have not been used for Capital Expenditures.

    The  Credit  Agreement  Amendments  will  permit  the  Corporation  to  make
additional Strategic Capital Expenditures  in an aggregate  amount equal to  the
net  proceeds of the Offering in excess  of $100,000,000 PLUS the Cash Available
for Sweep  with  respect  to  the  January 15,  1994  Test  Date  in  excess  of
$100,000,000.

    DEFINED  TERMS USED IN  FINANCIAL COVENANTS.  Capitalized  terms used in the
financial covenants in the  Credit Agreement shall have  the meanings set  forth
below  or,  if not  defined  below, the  meanings set  forth  in the  Old Credit
Agreement:

        "Adjusted Cumulative Net Worth"  of the Corporation, at  the end of  any
    quarter, shall mean the cumulative after tax net income (adjusted to exclude
    fresh start accounting) from January 1, 1995 through the end of such quarter
    PLUS  the aggregate net  cash proceeds received by  the Corporation from the
    issuance of equity securities after May 6, 1993.

        "Base Capital Expenditure  Allowance" for each  Fiscal Year, shall  mean
    the amount set forth below opposite such Fiscal Year:

<TABLE>
<S>                                                 <C>
1993..............................................  $33,900,000
1994..............................................   34,200,000
1995..............................................   39,300,000
1996..............................................   39,800,000
1997..............................................   51,900,000
1998..............................................   52,200,000
1999..............................................   52,200,000
</TABLE>

        "Consolidated  Current  Assets"  on  any  date,  shall  mean  the  total
    consolidated  assets  of   the  Corporation  and   its  Subsidiaries   (with
    inventories  being stated on a FIFO  basis) which may properly be classified
    as current assets in conformity with GAAP.

        "Consolidated Current Liabilities"  on any  date, shall  mean the  total
    consolidated  liabilities of the Corporation  and its Subsidiaries which may
    properly be classified as current  liabilities in conformity with GAAP,  not
    including  current maturities of long-term debt, but including any Revolving
    Loans which may, in accordance with GAAP, be considered long-term.

        "Coverage Period" means (i) with respect to the first fiscal quarter  of
    1995,  the three-month period ending on March 31, 1995, (ii) with respect to
    the second fiscal quarter of 1995,  the six-month period ending on June  30,
    1995, (iii) with respect to the third fiscal quarter of 1995, the nine-month
    period ending on September 30, 1995, and (iv) with respect to any succeeding
    fiscal  quarter,  the twelve-month  period ending  on the  last day  of such
    fiscal quarter.

        "Debt" at any time, shall mean, with respect to the Corporation and  its
    Subsidiaries  on  a  consolidated  basis, the  sum  of  (i)  the outstanding
    principal balance of the Revolving Loans at such

                                       69
<PAGE>
    time or any  indebtedness at such  time arising from  a permitted  revolving
    credit  facility replacement thereof (less the aggregate amount of cash held
    by the Corporation and its  consolidated Subsidiaries located in the  United
    States at such time), (ii) the aggregate amount of long-term indebtedness at
    such  time (including the  current portions thereof),  (iii) the outstanding
    amount of capital leases (classified as  such according to GAAP) shown as  a
    liability  on the Corporation's consolidated balance  sheet at such time and
    (iv) the aggregate amount of  all Accommodation Obligations with respect  to
    third-party  indebtedness of  the type described  in clauses  (ii) and (iii)
    above at such time.

        "EBITDA" for any period, means the consolidated operating earnings  from
    continuing  operations  of  the  Corporation  and  its  subsidiaries  before
    interest, taxes,  depreciation,  amortization,  other  income  and  expense,
    minority  interests, the impact of fresh start accounting and other non-cash
    adjustments to income for such period.

        "Fixed Charge Coverage Ratio"  of the Corporation as  of the end of  any
    fiscal  quarter shall mean the  ratio of (a) EBITDA  for the 12-month period
    ending on  the last  day of  such fiscal  quarter, excluding  the impact  of
    non-cash  fresh start accounting adjustments for such 12-month period, MINUS
    actual Capital Expenditures during  such 12-month period (excluding  Capital
    Expenditures  under  clauses  (iv)  and  (vi)  of  the  Capital Expenditures
    covenant described above) to (b) the total net consolidated interest expense
    of the  Corporation  and  its  Subsidiaries  during  such  12-month  period,
    excluding  the impact of  non-cash amortizations resulting  from fresh start
    accounting  during  such  period  plus  the  aggregate  scheduled  principal
    payments  due (and  not previously  prepaid) on  senior indebtedness  of the
    Corporation and  its Subsidiaries  during  the 12-month  period  immediately
    succeeding the end of such fiscal quarter.

        "Leverage Ratio" of the Corporation on any date, shall mean the ratio of
    Debt to Total Capital on such date.

        "Projected Cumulative Principal Payments" means the following amounts as
    of  February 15 of each Fiscal  Year below of projected cumulative principal
    payments of (i) the Capitalized Interest Notes and the Bank Term Loans as  a
    result  of mandatory  amortization payments  and cash  sweep prepayments and
    (ii) any  prepayments  on or  purchases  of the  Corporation's  public  debt
    securities having maturities prior to January 1, 1999 through such date:

<TABLE>
<CAPTION>
FEBRUARY 15 OF FISCAL YEAR                                CUMULATIVE PAYMENTS
- -------------------------------------------------------  ---------------------
<S>                                                      <C>
1994...................................................    $               0
1995...................................................           57,000,000
1996...................................................          133,000,000
1997...................................................          220,000,000
1998...................................................          332,000,000
1999...................................................          456,000,000
2000...................................................          579,000,000
</TABLE>

        "Projected  Cumulative Asset Sale Proceeds"  means the following amounts
    as of  the  end of  each  Fiscal Year  below  of projected  cumulative  cash
    proceeds  arising from the sale of assets  PLUS for the Fiscal Year in which
    the Libertyville facility is sold and each Fiscal Year thereafter, an amount
    equal to the net  cash proceeds received from  the sale of the  Libertyville
    facility:

<TABLE>
<CAPTION>
END OF FISCAL YEAR                                        CUMULATIVE PROCEEDS
- -------------------------------------------------------  ---------------------
<S>                                                      <C>
1992...................................................     $     7,000,000
1993...................................................          16,000,000
1994...................................................          21,000,000
1995...................................................          26,000,000
1996...................................................          31,000,000
1997...................................................          36,000,000
1998...................................................          41,000,000
1999...................................................          46,000,000
</TABLE>

                                       70
<PAGE>
        "Senior  Interest Coverage  Ratio" of  the Corporation  for any Coverage
    Period shall mean  the ratio of  (i) EBITDA for  such period, excluding  the
    impact  of non-cash  fresh start accounting  adjustments for  such period to
    (ii) the  total net  consolidated interest  expense (excluding  interest  on
    Subordinated  Debt)  of the  Corporation  and its  Subsidiaries  during such
    period, excluding the impact of non-cash amortizations resulting from  fresh
    start accounting during such period.

        "Total Capital" on any date, shall mean the sum of (i) Debt on such date
    and (ii) Adjusted Cumulative Net Worth on such date.

        "Total  Interest  Coverage Ratio"  of the  Corporation for  any Coverage
    Period shall mean  the ratio of  (i) EBITDA for  such period, excluding  the
    impact  of non-cash  fresh start accounting  adjustments for  such period to
    (ii) the total net consolidated interest expense of the Corporation and  its
    Subsidiaries   during  such   period,  excluding  the   impact  of  non-cash
    amortizations resulting from fresh start accounting during such period.

    DOMESTIC NATURE  OF COVENANTS.   Each  of the  financial covenants  will  be
calculated  on  a  domestic  basis  only,  PROVIDED,  that,  if  at  anytime the
Corporation's non-domestic consolidated  revenues for a  Fiscal Year  constitute
35%  or more  of the  Corporation's total  consolidated revenues  for such year,
then, effective as of the first  test date in the immediately succeeding  Fiscal
Year,  such financial  covenants shall  be calculated  to include  the financial
performance of  the  Corporation  and  all  of  its  consolidated  Subsidiaries,
PROVIDED  further, that, if  such event occurs and  the Corporation so requests,
the Corporation, the Bank Group, the  Agents and the Administrative Agent  shall
in  good  faith recast  the  foregoing financial  covenants  to account  for the
inclusion of the financial performance of the non-domestic Subsidiaries.

    CERTAIN LIMITS ON COMPLIANCE WITH FINANCIAL COVENANTS.  No Event of  Default
or  Potential Event of  Default would be  deemed to exist  or be continuing with
respect to  a breach  of the  Senior Interest  Coverage Ratio  and/or the  Total
Interest  Coverage Ratio for any quarter during Fiscal Years 1995, 1996 and 1997
unless there would also exist  a breach of the  Fixed Charge Coverage Ratio  for
such  quarter. Conversely,  no Event  of Default  or Potential  Event of Default
would be deemed to exist or be continuing with respect to a breach of the  Fixed
Charge  Coverage Ratio for any  quarter during fiscal years  1995, 1996 and 1997
unless there would also  exist a breach of  either the Senior Interest  Coverage
Ratio or the Total Interest Coverage Ratio for such quarter. No Event of Default
or  Potential Event of  Default would be  deemed to exist  or be continuing with
respect to the financial covenants described above unless either (i) such  Event
of  Default shall be disclosed in or  determinable on the basis of the financial
statements, compliance  statements or  officer's certificates  delivered to  the
Bank Group pursuant to the Credit Agreement or (ii) the Administrative Agent, at
the  direction of the Requisite Senior  Lenders, shall have given written notice
of such Event of Default to  the Corporation. All calculations of the  foregoing
financial  covenants  shall be  rounded to  the nearest  1/100. For  purposes of
calculating the foregoing covenants, GAAP shall  be constant from and after  the
date  of the Credit  Agreement, unless the Corporation  and the Requisite Senior
Lenders agree to modify such covenants to account for any subsequent changes  to
GAAP.

COLLATERAL

    Borrowings  under the  Credit Agreement  are all  secured by  first priority
security interests in the capital  stock of certain Subsidiaries. Such  security
interests  were granted pursuant  to the Collateral  Trust Agreement and related
Pledge Agreements  which  provide that  the  collateral will  also  equally  and
ratably   secure  certain  other  debt  of   the  Corporation  and  one  of  the
Subsidiaries, including the Senior  2002 Notes. See  "Description of Other  Debt
Obligations" and "Description of Collateral Trust Agreement."

AMENDED GUARANTEES

    The  Corporation has guaranteed  all obligations of  USG Interiors under the
Credit Agreement. Each of  United States Gypsum  Company, USG Industries,  Inc.,
USG  Interiors,  Inc., USG  Foreign Investments,  Ltd., L&W  Supply Corporation,
Westbank Planting Company,  USG Interiors International,  Inc., American  Metals
Corporation  and  La  Mirada  Products  Co.,  Inc.  (together,  the  "Subsidiary
Guarantors")  in  turn  has  guaranteed  pursuant  to  the  Amended   Subsidiary
Guarantees both the obligations of the Corporation

                                       71
<PAGE>
under  the Credit Agreement and the Senior 2002 Notes and the obligations of USG
Interiors under the Credit  Agreement. In connection  with the 1993  Amendments,
the  Subsidiary  Guarantors executed  the  Amended Subsidiary  Guarantees, which
entitle the Senior 2002 Notes issued at such time to participate on a PARI PASSU
basis in  the  benefits  of  the  Amended  Subsidiary  Guarantees.  The  Amended
Subsidiary  Guarantees are full  and unconditional guarantees  of prompt payment
and performance, when due, of all (i) the Obligations (as defined in the  Credit
Agreement) of the Borrowers (as defined therein) and (ii) all obligations of the
Corporation under the Senior 2002 Notes. The Bank Group has the right to enforce
the  Amended  Subsidiary  Guarantees  and seek  collection  thereunder  (for the
ratable benefit of the Bank Group and  holders of the Senior 2002 Notes) at  any
time  when one or more Events of  Default have occurred and are continuing under
the Credit Agreement (which  Events of Default will  include the occurrence  and
continuation of any event of default under the Senior 2002 Notes Indenture). The
Bank Group will have the right to (i) determine whether, when and to what extent
the  Amended Subsidiary Guarantees will be  enforced (provided that each Amended
Subsidiary Guarantee payment will be applied  to the Bank Term Loans,  Revolving
Credit Facility, Capitalized Interest Notes and Senior 2002 Notes pro rata based
on  the respective principal  amounts owed thereon) and  (ii) amend or eliminate
the  Amended  Subsidiary  Guarantees;  provided   that  the  pro  rata   sharing
requirement  contemplated in  (i) above  is not  waivable (in  the absence  of a
complete release of the Amended  Subsidiary Guarantees) without the approval  of
the  holders of  a majority  in principal amount  of each  of the  two series of
Senior 2002 Notes,  voting separately.  The Amended  Subsidiary Guarantees  will
terminate  when  the Bank  Term  Loans, the  Revolving  Credit Facility  and the
Capitalized Interest Notes are retired, regardless of whether any portion of the
Senior 2002 Notes  then remains  outstanding. The liability  of each  Subsidiary
Guarantor  on its Amended Subsidiary Guarantee is  limited to the greater of (i)
95% of the lowest amount, calculated as of the date of delivery of the  original
Amended  Subsidiary  Guarantee, sufficient  to  render the  guarantor insolvent,
leave the  guarantor with  unreasonably  small capital  or leave  the  guarantor
unable  to pay its  debts as they  become due (each  as defined under applicable
law) and (ii) the same amount calculated  as of the date any demand for  payment
under such guarantee is made, in each case plus collection costs.

    See  "Index  To  Financial Statements  Significant  Accounting  Policies and
Practices" for condensed  consolidating financial statements  of the  Subsidiary
Guarantors and non-guarantors.

INTEREST

    The  Corporation may elect, subject to the availability of LIBOR pricing, to
have interest on the  Bank Term Loans and  Revolving Loans calculated either  at
reserve  adjusted LIBOR  plus 1 7/8%  or at  Citibank's Base Rate  plus 7/8% per
annum. An increase of 2% on all of the above interest rates would  automatically
take  place five  business days after  notice of  the occurrence of  an Event of
Default, and will  remain at such  increased level  for so long  as the  default
continues.  Interest is  calculated on  the basis of  the actual  number of days
elapsed in the  period during which  interest accrues  and a year  of 360  days.
Interest  is payable  as follows: (i)  for loans bearing  interest calculated by
reference to LIBOR, interest is payable on the last day of each interest period,
consisting of one, two, three or, when available, six month periods (interest is
also payable after  three months in  the latter  case); (ii) for  the Bank  Term
Loans bearing interest calculated by reference to Citibank's Base Rate, interest
is  payable on the  last day of  each calendar quarter;  and (iii) for Revolving
Loans bearing interest calculated by reference to Citibank's Base Rate, interest
is payable on the last day of each calendar month. The Corporation may  purchase
interest  rate  caps,  swaps,  collars  or  similar  devices  on  terms mutually
acceptable to the Corporation and the Agents.

VOLUNTARY PREPAYMENTS

    Voluntary  prepayments  of  the  Bank   Term  Loans,  Revolving  Loans   and
Capitalized  Interest Loans  may be made  upon two business  days' prior notice,
PROVIDED THAT  the  Bank Group  shall  be  indemnified for  any  breakage  costs
resulting from such voluntary prepayment.

                                       72
<PAGE>
MANDATORY PREPAYMENTS

    In  addition to  the excess cash  sweep described above,  the Corporation is
required to make mandatory prepayments on the Bank Term Loans as a result of the
issuance for cash of  new debt and  equity securities. Prior  to the payment  in
full  of all  outstanding senior  debt securities  having maturity  dates before
January 1, 1999  (other than  the Bank  Term Loans),  100% of  the net  proceeds
resulting  from the  issuance for  cash of new  debt and  equity securities (the
"Refinancing Proceeds") would be applied to the outstanding principal balance of
the Corporation's  Bank  Term Loans  and  senior  debt securities  in  order  of
maturity; PROVIDED that to the extent such Refinancing Proceeds are insufficient
to repay all of such Bank Term Loans and other senior debt securities due in any
given  calendar year, the amount of such Refinancing Proceeds available for such
year will be applied  pro rata to  the mandatory amortization  of the Bank  Term
Loans  and senior debt  securities due during  such year based  on the principal
amount of  Bank Term  Loans and  senior debt  securities due  during such  year.
Subject to the following sentence, following the payment in full of all existing
senior debt securities having maturity dates before January 1, 1999, 100% of the
Refinancing  Proceeds would be applied as follows: (i) first, to the outstanding
principal balance of the Bank Term Loans  in the order of maturity, but only  to
the  extent  that the  principal balance  of the  Bank Term  Loans has  not been
reduced by at least $300 million, and  (ii) second, to any of the  Corporation's
senior  debt  securities having  a final  maturity prior  to December  31, 2002,
including the  Bank  Term Loans  (to  scheduled  installments in  the  order  of
maturity), as determined by the Corporation in its discretion; provided that the
minimum amount of such Refinancing Proceeds applied to the Bank Term Loans under
this  clause (ii) shall be a percentage of such Refinancing Proceeds obtained by
dividing the outstanding principal balance of  the Bank Term Loans at such  time
by  the sum of such outstanding principal balance of the Bank Term Loans and the
outstanding principal balance  of the  Senior 2002 Notes  at such  time. In  the
event  that all  existing senior  debt securities  having maturity  dates before
January 1, 1999 have been paid in full, the outstanding principal balance of the
Bank Term Loans has been reduced by at least $300 million and the  Corporation's
senior  debt securities are rated at least  BB+ by Standard & Poor's Corporation
or Ba1 by Moody's  Investors Service, Inc., the  amount of Refinancing  Proceeds
subject  to the  immediately preceding  sentence shall  be reduced  from 100% to
66 2/3%,  with the  remaining 33  1/3% of  such Refinancing  Proceeds not  being
subject to the mandatory prepayment provisions.

    The  Credit Agreement Amendments (i) permit,  prior to the repayment in full
of all  existing senior  public debt  due before  1999, the  use by  USG of  any
Refinancing  Proceeds for  the prepayment, at  USG's option, of  any such public
debt and/or  Bank  Term  Loans  in  any order  of  maturity;  (ii)  require  the
application  of any such  Refinancing Proceeds within one  year of issuance; and
(iii) provide that USG may retain 33 1/3% of future Refinancing Proceeds if  all
existing senior public debt due before 1999 has been paid in full, the aggregate
outstanding  Bank Term Loans at such time does not exceed $148,000,000 and USG's
public senior debt is then  rated at least BB  by Standard & Poor's  Corporation
and Ba2 by Moody's Investors Service, Inc.

FEES

    Commitment  fees  on the  unused portion  of  the Extended  Revolving Credit
Facility accrue  at a  per  annum rate  of 3/8%  and  are payable  quarterly  in
arrears.  Commitment fees on the undrawn face  amount of all Facility Letters of
Credit accrue  at a  per annum  rate  of 1  1/2% and  are payable  quarterly  in
advance.

                     DESCRIPTION OF OTHER DEBT OBLIGATIONS

THE 1986 INDENTURE SECURITIES

    The  Senior 1996 Notes, the Senior 1997 Notes and the Senior 2017 Debentures
were issued  under  an  indenture  and  certain  related  instruments  delivered
thereunder  (collectively, the "1986  Indenture"), dated as  of October 1, 1986,
between the Corporation and the Harris  Trust and Savings Bank, as trustee  (the
"1986  Indenture Trustee"). As part of the Restructuring, the 1986 Indenture was
supplemented by resolutions adopted by the Board (the "Bond Board  Resolutions")
and  an officer's certificate  delivered in accordance  therewith to provide for
the Senior 1995 Notes  and the Senior  1998 Notes. In  connection with the  Note
Placement,  the  1986 Indenture  is  being supplemented  by  further resolutions
adopted by

                                       73
<PAGE>
the Board  (the "1994  Bond  Board Resolutions")  and an  officer's  certificate
delivered  in accordance  therewith to  provide for  the Senior  2001 Notes. The
Senior 1995 Notes, the Senior 1996 Notes, the Senior 1997 Notes, the Senior 1998
Notes, the Senior  2001 Notes and  the Senior 2017  Debentures are  collectively
referred  to herein as the "1986  Indenture Securities." Conformed copies of the
1986 Indenture, the Bond  Board Resolutions and the  1994 Bond Board  Resolution
have  been filed as exhibits to the  Registration Statement and are available as
described under  "Available  Information."  Whenever  particular  provisions  or
defined  terms  of  the 1986  Indenture  Securities  or the  1986  Indenture, as
supplemented by the Bond Board Resolutions and the 1994 Bond Board  Resolutions,
are referred to, such provisions or defined terms are deemed incorporated herein
by  reference  and  such statements  are  qualified  in their  entirety  by such
reference. Initial capitalized terms which are defined in the 1986 Indenture are
used herein as so defined.

    GENERAL

    The Senior 1995 Notes are  a series of securities  which are limited to  $75
million  aggregate principal amount. The Senior  1995 Notes bear interest at the
rate of 8% per annum and will  mature on December 15, 1995. Interest is  payable
semiannually  on June 15 and  December 15 of each year,  to the persons in whose
names the Senior 1995 Notes are registered at the close of business on the  next
preceding June 1 or December 1, as the case may be.

    The  Senior 1996  Notes bear  interest at  8% per  annum and  will mature on
December 15, 1996. Interest is payable  semiannually on June 15 and December  15
of  each year to the persons in whose names the Senior 1996 Notes are registered
at the close of business on the next preceding June 1 or December 1, as the case
may be.

    The Senior 1997 Notes bear interest at 8% per annum and will mature on March
15, 1997. Interest is payable semiannually on September 15 and March 15 of  each
year  to the persons in whose names the  Senior 1997 Notes are registered at the
close of business on the next preceding September 1 or March 1, as the case  may
be.

    The  Senior 1998 Notes are  a series of securities  which are limited to $35
million aggregate principal amount. The Senior  1998 Notes bear interest at  the
rate  of 9% per annum and will mature  on December 15, 1998. Interest is payable
semi-annually on June 15 and  December 15 of each year  to the persons in  whose
names  the Senior 1998 Notes are registered at the close of business on the next
preceding June 1 or December 1, as the case may be.

    The Senior 2001 Notes are a series  of securities which are limited to  $150
million  aggregate  principal amount.  The Senior  2001  Notes bear  interest at
9 1/4% per  annum and will  mature on  September 15, 2001.  Interest is  payable
semi-annually on March 15 and September 15 of each year, beginning September 15,
1994,  to the persons in whose names the Senior 2001 Notes are registered at the
close of business on the next preceding March 1 or September 1, as the case  may
be.

    The  Senior 2017 Debentures bear interest at 8.75% per annum and will mature
on March 1, 2017. Interest is payable semiannually on September 1 and March 1 of
each year  to  the  persons  in  whose names  the  Senior  2017  Debentures  are
registered  at the close of business on the next preceding August 15 or February
15, as the case may be.

    Principal (and premium, if any) and interest is payable, and the transfer of
the 1986 Indenture  Securities is registrable,  at the office  or agency of  the
Corporation  maintained  for  such purpose  in  the  City of  Chicago,  State of
Illinois, currently the Corporate  Trust Office of  the 1986 Indenture  Trustee,
Harris  Trust and Savings Bank, 311 West Monroe Street, Chicago, Illinois 60690;
provided, however, that payment  of interest may  be made at  the option of  the
Corporation  by check  or draft  mailed to the  person entitled  thereto as such
person's address appears in  the security register  maintained for such  purpose
pursuant  to the 1986 Indenture. No service charge will be made for any transfer
or exchange except the  Corporation may require payment  of a sum sufficient  to
cover any tax or other governmental charge payable in connection therewith.

                                       74
<PAGE>
    The  Senior  1995  Notes and  the  Senior  1998 Notes  are  issued  in fully
registered form  without  coupons and  in  denominations of  $250  and  integral
multiples  thereof. The  Senior 1996 Notes,  the Senior 1997  Notes, Senior 2001
Notes and the Senior 2017 Debentures are issued in fully registered form without
coupons and in denominations of $1,000 and integral multiples thereof.

    The 1986  Indenture  Securities rank  PARI  PASSU with  all  senior  secured
indebtedness of the Corporation.

    SECURITY

    The  1986  Indenture  Securities  are  secured  by  first  priority security
interests in capital stock of  certain Subsidiaries which were granted  pursuant
to  the Collateral Trust  Agreement and related  pledge and security agreements.
The Collateral Trust Agreement provides  that the collateral thereunder  equally
and  ratably  secures certain  other  debt of  the  Corporation and  one  of the
Subsidiaries, including the  Senior 2002  Notes and the  Bank Debt  Obligations.
Holders  of the  Bank Debt  Obligations primarily  control the  operation of the
Collateral Trust. See "Description of Collateral Trust."

    REDEMPTION

    The Senior 1995  Notes and  the Senior  1998 Notes  may be  redeemed by  the
Corporation in whole or in part at any time without penalty or premium.

    The  Senior 1996 Notes, the Senior 1997  Notes and the Senior 2001 Notes may
not be redeemed at the option of the Corporation prior to maturity.

    The Senior 2017 Debentures may be redeemed at the option of the  Corporation
in  whole or in part from time to time on at least 30 and not more than 90 days'
notice by mail to registered holders thereof at the following redemption  prices
(expressed in percentages of principal amount):

    If  redeemed during the  12-month period commencing  March 1 of  each of the
years indicated:

<TABLE>
<CAPTION>
             YEAR                PERCENTAGE                YEAR                PERCENTAGE
- ------------------------------  ------------  ------------------------------  ------------
<S>                             <C>           <C>                             <C>
1993..........................     105.974%   2000..........................     102.987%
1994..........................     105.547    2001..........................     102.560
1995..........................     105.120    2002..........................     102.134
1995..........................     104.694    2003..........................     101.707
1997..........................     104.267    2004..........................     101.280
1998..........................     103.840    2005..........................     100.853
1999..........................     103.414    2006..........................     100.427
</TABLE>

and thereafter at 100%  of the principal amount  thereof, in each case  together
with accrued and unpaid interest to the date fixed for redemption.

    Notwithstanding the foregoing provisions, the Corporation may not redeem any
of  the Senior 2017 Debentures  prior to March 1,  1997, directly or indirectly,
from or  in  anticipation of  moneys  borrowed by  or  for the  account  of  the
Corporation  or any of its  Subsidiaries at an interest  cost of less than 8.77%
per annum, except for Senior 2017 Debentures redeemed pursuant to the provisions
described below under "Sinking Fund."

    SINKING FUND

    As a mandatory sinking fund for the Senior 2017 Debentures, the  Corporation
will pay to the 1986 Indenture Trustee before March 1, in each of the years 1998
to  2016, inclusive, an amount in cash sufficient to redeem, at the Sinking Fund
Redemption Price,  $10,000,000 aggregate  principal amount  of the  Senior  2017
Debentures. At its option, the Corporation may pay to the 1986 Indenture Trustee
before  each mandatory  sinking fund payment  date an additional  amount in cash
sufficient to redeem at  the Sinking Fund Redemption  Price up to an  additional
$15,000,000  aggregate principal amount of the Senior 2017 Debentures. The right
to make such optional sinking fund payments is not cumulative, but any  optional
sinking  fund  payment  may be  used  to  reduce the  amount  of  any subsequent
mandatory sinking  fund payment.  The  Corporation may,  at its  option,  credit
against mandatory sinking fund

                                       75
<PAGE>
payments  the principal  amount of Senior  2017 Debentures  acquired or redeemed
other than through the  operation of the mandatory  sinking fund, provided  that
such  Senior 2017 Debentures have not theretofore  been used for any such credit
or delivered to the 1986 Indenture  Trustee for cancellation in connection  with
certain  sale and  leaseback transactions  as described  below under "Limitation
Upon Sale and Leaseback Transactions."

    RESTRICTED AND UNRESTRICTED SUBSIDIARIES

    The various restrictive provisions of the 1986 Indenture, as supplemented by
the Bond  Board Resolutions  and  the 1994  Bond Board  Resolutions,  summarized
below,  while applicable to the Corporation  and its Restricted Subsidiaries, do
not apply to  Unrestricted Subsidiaries.  A "Subsidiary" is  any corporation,  a
majority  of  the  Voting  Stock of  which  is  at the  time  owned  directly or
indirectly by the  Corporation and  its other Subsidiaries.  "Voting Stock,"  as
applied to the stock of any corporation, is stock of any class or classes having
ordinary  voting power for the  election of a majority  of the directors of such
corporation, other than stock having such power only by reason of the  happening
of  a contingency.  A "Restricted Subsidiary"  is any Subsidiary  which owns any
Principal Operating Property.  "Principal Operating Property"  is any  principal
manufacturing   plant,  or  distribution  or   research  facility,  and  related
facilities  located  in  the  United  States  and  owned  and  operated  by  the
Corporation or any Subsidiary for more than 90 days, other than (i) any facility
acquired for the control or abatement of atmospheric pollutants or contaminants,
water  pollution, noise,  odor or  other pollution  or (ii)  any plant  or other
facility which, in the opinion  of the Board, is  not of material importance  to
the  business  of the  Corporation and  its Restricted  Subsidiaries taken  as a
whole. An "Unrestricted Subsidiary"  is any Subsidiary  other than a  Restricted
Subsidiary.

    RESTRICTIONS ON MERGER

    So  long as any  1986 Indenture Securities  are outstanding, the Corporation
may not consolidate with or merge into any other corporation or sell or transfer
all or substantially all of its  properties and assets to another Person  unless
(i)  the successor is a corporation organized and existing under the laws of the
United States of America or  a state thereof and  expressly assumes the due  and
punctual  payment of the principal  of (and premium, if  any), interest, if any,
and Additional Amounts,  if any, on  all the 1986  Indenture Securities and  any
coupons and the due and punctual performance and observance of all covenants and
conditions of the Corporation in the 1986 Indenture, as supplemented by the Bond
Board  Resolutions, and (ii)  such successor corporation  shall not, immediately
after such merger or consolidation, or such sale or conveyance, be in default in
the performance  of  any  covenant  or  condition  of  the  1986  Indenture,  as
supplemented by the Bond Board Resolutions.

    LIMITATION UPON SECURED DEBT OF THE CORPORATION AND ITS RESTRICTED
SUBSIDIARIES

    So  long as any  1986 Indenture Securities  are outstanding, the Corporation
will not itself, and will not permit any Restricted Subsidiary to, incur, issue,
assume, guarantee  or  suffer  to  exist any  indebtedness  for  money  borrowed
("Debt")  secured by a mortgage, pledge,  lien or security interest ("Mortgage")
on any Principal Operating  Property or on  any shares of stock  or Debt of  any
Restricted  Subsidiary, without  effectively providing that  such 1986 Indenture
Securities (together with, if the Corporation  so determines, any other Debt  of
the  Corporation  or  such  Restricted Subsidiary  then  existing  or thereafter
created which is  not subordinated Debt)  shall be secured  equally and  ratably
with  (or, at the Corporation's  option, prior to) such  secured Debt so long as
such secured Debt shall be so secured,  unless the aggregate amount of all  such
secured  Debt, together  with all Attributable  Debt of the  Corporation and its
Restricted Subsidiaries in respect of sale and leaseback transactions  involving
Principal  Operating  Properties (other  than  those exempt  under  clauses (ii)
through (iv) under  "Limitation Upon  Sale and  Leaseback Transactions"  below),
would  not  exceed 5%  of Consolidated  Net  Tangible Assets.  "Consolidated Net
Tangible Assets" means the  Corporation's aggregate amount  of assets minus  (a)
all  liabilities  except (i)  indebtedness for  money  borrowed maturing  on, or
extendable at the option of the obligor to,  a date more than one year from  the
date   of  determination   thereof,  (ii)   deferred  income   taxes  and  (iii)
stockholders' equity and  (b) all  goodwill, trade  names, trademarks,  patents,
unamortized   debt  discount  and  expense  and  other  like  intangibles.  This
restriction does not apply to, and there  will be excluded from secured Debt  in
any   computation  under  such  restriction,   Debt  secured  by  (i)  Mortgages

                                       76
<PAGE>
on property of, or on any shares  of stock or Debt of, any corporation  existing
at  the time such corporation becomes a Restricted Subsidiary; (ii) Mortgages in
favor of the Corporation or a Restricted Subsidiary; (iii) Mortgages in favor of
governmental bodies to secure  progress, advance or  other payments pursuant  to
any  contract or provision of any statute; (iv) certain Mortgages created (A) in
the ordinary course of  business, (B) in connection  with taxes, assessments  or
other  governmental charges  or (C)  in connection  with legal  proceedings; (v)
Mortgages on property  (including leasehold  estates), shares of  stock or  Debt
existing  at  the time  of  acquisition thereof  (including  acquisition through
merger or consolidation); (vi) purchase  money and construction Mortgages  which
are entered into within specified time limits; and (vii) any extension, renewal,
replacement  or refunding of  any Mortgage referred to  in the foregoing clauses
(i) through (vi), inclusive. "Attributable Debt"  is defined in general to  mean
the  total net amount of  rent required to be paid  during the remaining term of
any lease, discounted at  a rate per  annum equal to  one-fourth of one  percent
over  the  rate per  annum  borne by  the  applicable 1986  Indenture Securities
(except that  for  1998 Senior  Notes  such rate  shall  be 8  1/4%)  compounded
semi-annually.

    LIMITATION UPON SALE AND LEASEBACK TRANSACTIONS

    So  long as any of the  following 1986 Indenture Securities are outstanding,
the Corporation will not itself, and  will not permit any Restricted  Subsidiary
to,  sell or transfer any Principal Operating Property owned as of the following
dates with the intention of taking back  a lease thereof (a "sale and  leaseback
transaction"):

<TABLE>
<S>                                      <C>
Senior 1995 Notes......................  December 15, 1986
Senior 1996 Notes......................  December 15, 1986
Senior 1997 Notes......................  March 15, 1987
Senior 1998 Notes......................  December 15, 1986
Senior 2017 Debentures.................  March 1, 1987
Senior 2001 Notes......................  September 15, 2001
</TABLE>

This  restriction does not apply  to any sale and  leaseback transaction if: (i)
the Corporation  or such  Restricted Subsidiary  could mortgage  such  Principal
Operating  Property  under the  restrictions  set forth  under  "Limitation Upon
Secured Debt of  the Corporation and  its Restricted Subsidiaries"  above in  an
amount  equal to the Attributable  Debt with respect to  such sale and leaseback
transaction without equally and ratably securing the 1986 Indenture  Securities;
(ii) within 120 days after the sale or transfer is completed, the Corporation or
a  Restricted Subsidiary applies to the retirement  of Senior Funded Debt of the
Corporation or Funded  Debt of a  Restricted Subsidiary an  amount equal to  the
greater  of (A) the net proceeds of the sale of the Principal Operating Property
leased or (B) the fair market value of the Principal Operating Property  leased;
(iii)  the  lease  in such  sale  and  leaseback transaction  is  for  a period,
including renewals, of  no more than  three years; or  (iv) such arrangement  is
between  the  Corporation  and  a Restricted  Subsidiary  or  between Restricted
Subsidiaries.

    EVENTS OF DEFAULT

    The following  will  be Events  of  Default  under the  1986  Indenture,  as
supplemented  by the Bond Board  Resolutions: (i) default in  the payment of any
principal or premium, if any, on the 1986 Indenture Securities; (ii) default for
30 days  in the  payment  of any  interest or  Additional  Amounts on  the  1986
Indenture  Securities; (iii) default for 90 days after written notice thereof in
the  performance  of  any  other   covenant  applicable  to  such  Notes;   (iv)
acceleration  of  the maturity  of any  indebtedness of  the Corporation  or any
Subsidiary in excess of  $50 million principal amount  in the aggregate if  such
acceleration  results from a  default under the instruments  giving rise to such
indebtedness and is  not annulled within  10 days after  written notice of  such
default;  or (v) certain events of  bankruptcy, insolvency or reorganization. No
Event of Default with respect to a particular series of securities issued  under
the  1986 Indenture, as supplemented by  the Bond Board Resolutions, necessarily
constitutes an Event of Default with  respect to any other series of  securities
issued  thereunder. In case an Event of  Default (other than an Event of Default
under clause (v)) shall occur and be continuing with respect to any series,  the
1986  Indenture  Trustee  or the  holders  of  not less  than  25%  in aggregate
principal amount of all series  of securities affected thereby then  outstanding
under the 1986 Indenture, as supplemented by the Bond

                                       77
<PAGE>
Board  Resolutions,  (voting as  one  class) by  notice  to the  Corporation may
declare the principal  (or, in  the case  of discounted  securities, the  amount
specified  in  the  terms  thereof)  of  such  series  to  be  due  and  payable
immediately. In case an  Event of Default  under clause (v)  shall occur and  be
continuing,  the 1986 Indenture Trustee  or the holders of  not less than 25% in
aggregate principal amount  of all  securities then outstanding  under the  1986
Indenture,  as supplemented by the Bond Board Resolutions, (voting as one class)
by notice may declare the principal  (or, in the case of discounted  securities,
the amount specified in the terms thereof) of all such outstanding securities to
be  due  and  payable  immediately.  Any Event  of  Default  with  respect  to a
particular series of securities issued under the 1986 Indenture, as supplemented
by the Bond Board Resolutions, may be waived, and a declaration of  acceleration
rescinded,  by the holders  of a majority  in aggregate principal  amount of the
outstanding securities of such series (or if all such outstanding securities, as
the case may be), except  in a case of failure  to pay principal or premium,  if
any,  or interest or  Additional Amounts in  respect of such  security for which
payment had not been subsequently made.  The 1986 Indenture, as supplemented  by
the  Bond  Board  Resolutions,  provides that  the  1986  Indenture  Trustee may
withhold notice to  the securityholders  of any  default (except  in payment  of
principal,  premium, if any, or interest or Additional Amounts) if it determines
in good faith that it is in the interest of the securityholders to do so.

    Subject to the provisions of the 1986 Indenture, as supplemented by the Bond
Board Resolutions, relating to the duties of the 1986 Indenture Trustee in  case
an Event of Default occurs and is continuing, the 1986 Indenture Trustee will be
under  no obligation  to exercise  any of  its rights  or powers  under the 1986
Indenture, as supplemented by the Bond Board Resolutions, at the request,  order
or  direction of  any of the  securityholders, unless  such securityholders have
offered to  the 1986  Indenture Trustee  reasonable indemnity.  Subject to  such
provisions  for the indemnification of the 1986 Indenture Trustee and to certain
other limitations, the holders  of a majority in  aggregate principal amount  of
the  securities  of  all series  affected  (voting  as one  class)  at  the time
outstanding have the right  to direct the time,  method and place of  conducting
any  proceeding  for any  remedy  available to  the  1986 Indenture  Trustee, or
exercising any trust or power conferred on the 1986 Indenture Trustee.

    The Corporation is required to file with the 1986 Indenture Trustee annually
an officers' certificate as to the  absence of certain defaults under the  terms
of the 1986 Indenture, as supplemented by the Bond Board Resolutions.

    DEFEASANCE

    The  Corporation, at  its option,  (i) will be  discharged from  any and all
obligations in respect of  any series of the  1986 Indenture Securities  (except
for  certain  obligations to  register  the transfer  or  exchange of  such 1986
Indenture Securities, replace  such stolen,  lost, destroyed  or mutilated  1986
Indenture  Securities, maintain paying  agencies and hold  moneys for payment in
trust) or (ii) will not be under any obligation to comply with certain covenants
and provisions applicable  to such  1986 Indenture  Securities, including  those
described  above  under "Limitation  Upon Secured  Debt  of the  Corporation and
Restricted Subsidiaries" and "Limitation Upon Sale and Leaseback  Transactions,"
if  the Corporation (i) irrevocably deposits with the 1986 Indenture Trustee, in
trust for  the holders  of such  1986  Indenture Securities,  (A) money  or  (B)
noncallable  obligations  issued or  fully guaranteed  by  the United  States of
America which through the payment of  interest and income thereon and  principal
thereof  will provide money, in each case in an amount sufficient to pay all the
principal of  (and  premium,  if  any)  and  interest  on  such  1986  Indenture
Securities  on the dates such  payments are due in  accordance with the terms of
such 1986 Indenture Securities and (ii) shall have paid or caused to be paid all
other sums payable with respect to  such 1986 Indenture Securities. To  exercise
either  of the options described above, the Corporation is required, among other
things, to  deliver to  the  1986 Indenture  Trustee  an opinion  of  nationally
recognized  tax  counsel  to the  effect  that  holders of  such  1986 Indenture
Securities will  not recognize  income,  gain or  loss  for federal  income  tax
purposes  as  a result  of such  deposit and  discharge and  will be  subject to
federal income tax in  the same amount and  in the same manner  and at the  same
times  as  would  have been  the  case if  such  deposit and  discharge  had not
occurred, and an officer's certificate and opinion of counsel to the effect that
all conditions precedent relating to such  deposit and discharge under the  1986
Indenture,   as  supplemented   by  the   Bond  Board   Resolutions,  have  been

                                       78
<PAGE>
complied with, and that such deposit and discharge will not cause any  violation
of  the  Investment  Company  Act  of  1940, as  amended,  on  the  part  of the
Corporation, the trust, the  trust funds representing such  deposit or the  1986
Indenture Trustee.

    MODIFICATION OF THE INDENTURE

    The  1986 Indenture, as supplemented by the Bond Board Resolutions, contains
provisions permitting the Corporation and  the 1986 Indenture Trustee to  modify
or  otherwise  amend  the 1986  Indenture,  as  supplemented by  the  Bond Board
Resolutions, or any supplemental indenture thereto or the rights of the  holders
of the securities issued thereunder, with the consent of the holders of not less
than  a majority in principal amount of the securities of all series at the time
outstanding under  such  1986  Indenture,  as supplemented  by  the  Bond  Board
Resolutions, which are affected by such modification or amendment (voting as one
class);  provided that  no such modification  or amendment shall  (i) change the
fixed maturity of  any securities, or  reduce the principal  amount thereof,  or
premium, if any, or reduce the rate or extend the time of payment of interest or
Additional  Amounts  thereon, or  reduce  the amount  due  and payable  upon the
acceleration of the maturity  thereof or the amount  provable in bankruptcy,  or
make  the  principal of,  or  interest, premium  or  Additional Amounts  on, any
security payable  in any  coin or  currency  other than  that provided  in  such
security;  (ii) impair the  right to institute  suit for the  enforcement of any
such payment  on or  after the  stated  maturity thereof;  or (iii)  reduce  the
aforesaid  percentage  in principal  amount of  securities,  the consent  of the
holders of which  is required  for any such  modification or  amendment, or  the
percentage  required for the  consent of the holders  to waive defaults, without
the consent of the holder of each security so affected.

THE SENIOR 2002 NOTES

    The Senior 2002 Notes are issued under two indentures (the "Senior 2002 Note
Indentures") among the Corporation, the  Subsidiary Guarantors and State  Street
Bank  and Trust Company (the "Senior 2002  Note Trustee"), as trustee. The forms
of the  Senior  2002  Note  Indentures  have  been  filed  as  exhibits  to  the
Registration   Statement  and  are  available   as  described  under  "Available
Information." Whenever particular provisions or defined terms of the Senior 2002
Note Indentures are  referred to, such  provisions or defined  terms are  deemed
incorporated  herein  by reference.  Capitalized  terms used  but  not otherwise
defined in this summary have the meanings given to such terms in the Senior 2002
Note Indentures.

    GENERAL

    The Senior  2002  Notes are  limited  to $478  million  aggregate  principal
amount.  The Senior  2002 Notes  bear interest at  a rate  of 10  1/4% per annum
(computed on the basis of a 360-day year consisting of twelve 30-day months) and
will mature on December  15, 2002. Interest is  payable semiannually on June  15
and  December  15, to  the  persons in  whose names  the  Senior 2002  Notes are
registered at the close of business on the next preceding June 1 or December  1,
as the case may be.

    The  Senior 2002 Notes rank PARI  PASSU with all senior secured indebtedness
of the Corporation.

    Principal and interest are payable, and the transfer of Senior 2002 Notes is
registrable, at the  office or  agency of  the Corporation  maintained for  such
purpose  in  the City  of Chicago,  State of  Illinois; provided,  however, that
payment of interest may  be made at  the option of the  Corporation by check  or
draft  mailed  to the  person entitled  thereto  as it  appears in  the security
register  maintained  for  such  purpose  pursuant  to  the  Senior  2002   Note
Indentures.

    The  Senior 2002 Notes  are issued in fully  registered form without coupons
and in denominations of $1,000 and integral multiples thereof. No service charge
will be made  for any transfer  or exchange except  the Corporation may  require
payment  of  a sum  sufficient to  cover  any tax  or other  governmental charge
payable in connection therewith.

    SECURITY

    The Senior 2002 Notes  are secured by first  priority security interests  in
the  capital  stock of  certain Subsidiaries  pursuant  to the  Collateral Trust
Agreement and related pledge and security agreements

                                       79
<PAGE>
which provide that  the security  interests equally and  ratably secure  certain
other  debt of  the Corporation and  certain of the  Subsidiaries, including the
1986 Indenture Securities  and the Bank  Debt Obligations. The  Bank Group  will
primarily   control  the  operation  of  the  Collateral  Trust  Agreement.  See
"Description of Collateral Trust."

    SUBSIDIARY GUARANTEES

    Pursuant  to  contingent   payment  guarantees   (the  "Contingent   Payment
Guarantees"),  holders of the Senior 2002 Notes are entitled to participate on a
PARI PASSU basis in any collections made  by the Bank Group from the  Subsidiary
Guarantors  pursuant to  the Subsidiary Guarantees  of the Bank  Term Loans, the
Extended Revolving  Credit  Facility, the  Capitalized  Interest Notes  and  the
Senior  2002  Notes. The  provisions in  the Senior  2002 Note  Indentures which
provide for the Contingent Payment Guarantees confirm (but do not expand upon or
add to)  the  obligation  of  the Subsidiary  Guarantors  under  the  Subsidiary
Guarantees  and the right of the holders of the Senior 2002 Notes to participate
in any payments thereunder. However, the  Bank Group has the exclusive right  to
(i) determine whether, when and to what extent the Subsidiary Guarantees will be
enforced  (provided that each guarantee payment will be applied to the Bank Term
Loans, Revolving Credit  Facility, Capitalized  Interest Notes  and Senior  2002
Notes  pro rata based on the respective  amounts owed thereon) and (ii) amend or
eliminate  the  Subsidiary  Guarantees;  provided  that  the  pro  rata  sharing
requirement  contemplated in  (i) above  is not  waivable (in  the absence  of a
complete release  of the  Subsidiary  Guarantees) without  the approval  of  the
holders  of a  majority in principal  amount of  each series of  the Senior 2002
Notes then outstanding. In addition, each Subsidiary Guarantor's liability under
its guarantee  is limited  to  the greater  of (i)  95%  of the  lowest  amount,
calculated  as of  the date  of delivery  of the  original Subsidiary Guarantee,
sufficient  to  render  the  guarantor  insolvent,  leave  the  guarantor   with
unreasonably  small capital or  leave the guarantor  unable to pay  its debts as
they become due (each as defined under applicable law) and (ii) the same  amount
calculated  as of  the date any  demand for payment  is made, in  each case plus
collection costs. Holders of the Senior  2002 Notes are entitled to enforce  the
pro  rata sharing requirement described  above in the event  that the Bank Group
fails to share proceeds collected under the Subsidiary Guarantees in  accordance
with  the terms thereof. The Subsidiary  Guarantees will terminate when the Bank
Term Loan, the Extended Revolving  Credit Facility and the Capitalized  Interest
Notes  are retired, regardless of  whether any portion of  the Senior 2002 Notes
then remains outstanding. See "Description of Credit Agreement -- Guarantees."

    REDEMPTION

    Subject to  certain  limitations  contained in  the  Credit  Agreement,  the
Corporation  may, at its  option, redeem the  Senior 2002 Notes  in whole at any
time or in  part (in integral  multiples of $1,000)  from time to  time, at  the
following redemption prices (expressed as a percentage of principal amount) plus
accrued interest to the redemption date:

<TABLE>
<CAPTION>
                                  REDEMPTION DATE                                       REDEMPTION PRICE
- ------------------------------------------------------------------------------------  ---------------------
<S>                                                                                   <C>
At any time through and including May 6, 1994.......................................             103%
At any time between May 6, 1994 and May 6, 1995.....................................             102%
At any time between May 6, 1995 and May 6, 1996.....................................             101%
On the day next following May 6, 1996...............................................             100%
</TABLE>

    In  addition, the Senior 2002 Notes  are subject to mandatory redemption, to
the extent of  any and  all payments (together  with earnings  thereon, if  any)
received  by the  Senior 2002  Note Trustee  pursuant to  the Contingent Payment
Guarantees referred to above or by  the Collateral Trustee under the  Collateral
Trust  Agreement, at a redemption price equal to 100% of the principal amount of
the Senior 2002  Notes redeemed  plus accrued interest  thereon to  the date  of
redemption.

    CERTAIN COVENANTS OF THE CORPORATION AND ITS RESTRICTED SUBSIDIARIES

    Each  of the Senior 2002 Note  Indentures contains certain covenants binding
upon the  Corporation  and  its Restricted  Subsidiaries  which  include,  among
others, the negative covenants described below.

                                       80
<PAGE>
These  covenants  do  not  apply to  Unrestricted  Subsidiaries.  See  "The 1986
Indenture Securities -- Restricted and Unrestricted Subsidiaries" above for  the
definitions of Restricted and Unrestricted Securities.

    Limitation Upon Debt of the Corporation and its Restricted Subsidiaries

    So  long as any  Senior 2002 Notes are  outstanding, neither the Corporation
nor any Restricted Subsidiary shall issue, assume, guarantee, incur or otherwise
become liable  for (collectively  "issue"), directly  or indirectly,  any  Debt,
unless  the Interest  Coverage Ratio  for the  four consecutive  fiscal quarters
(treated as one accounting period) immediately preceding, and ending at least 30
days prior to, the issuance of such  Debt (as shown by a pro forma  consolidated
income  statement  of the  Corporation and  its  Domestic Subsidiaries  for such
period after giving effect to (i) the issuance of such Debt and, if  applicable,
the  application of the net proceeds thereof to refinance other Debt, as if such
Debt was issued and proceeds  applied at the beginning  of the period; (ii)  the
issuance  and retirement of any other Debt since the last day of the most recent
fiscal quarter covered by such  income statement as if  such Debt was issued  or
retired  at the beginning  of the period;  and (iii) within  certain limits, the
acquisition of any  company or business  acquired by the  Corporation since  the
first  day of  the period, including  any acquisition which  will be consummated
contemporaneously with  the  issuance  of  such Debt,  as  if  such  acquisition
occurred  at  the beginning  of  the period  and  without giving  effect  to any
adjustments to  the historical  book  value of  acquired assets  or  liabilities
required  or permitted by generally  accepted accounting principles) exceeds the
following ratios for Debt  issued in the respective  periods indicated: (a)  the
period  through December  31, 1996,  1.50; (b) the  period from  January 1, 1997
through December 31, 1998,  1.75; and (c) from  January 1, 1999 and  thereafter,
2.00.  The  preceding  restrictions will  not  prohibit the  Corporation  or any
Restricted Subsidiary from issuing the following Debt: (i) Debt issued  pursuant
to  the  Credit  Agreement;  provided that  (A)  amounts  outstanding (including
outstanding Facility  Letters of  Credit) under  the Extended  Revolving  Credit
Facility shall not exceed $175 million at any time, and (B) the Bank Term Loans,
once  repaid or prepaid, in whole or in  part, shall not again be incurred under
this restriction, except for  extensions, renewals, substitutions,  refinancings
and  replacements as permitted under clause (xi) below; (ii) Debt outstanding on
the Effective Date;  provided that  any such Debt,  once repaid  or prepaid,  in
whole or in part, shall not again be incurred under this restriction, except for
extensions,  renewals, substitutions, refinancings and replacements as permitted
under clause (xi) below; (iii) Debt under the Senior 2002 Notes; (iv) so long as
any Debt remains outstanding under the Credit Agreement, Debt of the Corporation
to any Restricted Subsidiary; provided that (a) the maker of any loan  resulting
in  the incurrence of such Debt shall not be insolvent at the time such loan was
made or rendered insolvent as a result of the making of such loan, (b) such loan
was in compliance with applicable law and (c) such loan shall be subordinate  in
right of payment to the repayment in full of the Senior 2002 Notes following the
acceleration  of the Senior 2002 Notes; (v) Debt of any Restricted Subsidiary to
the Corporation  or  any other  Restricted  Subsidiary; (vi)  Debt  relating  to
letters  of credit  (other than  Debt permitted by  clauses (i)  and (ii) above)
issued for the  account of the  Corporation or any  Restricted Subsidiary in  an
aggregate  amount not to exceed $2.5  million; (vii) Debt incurred in connection
with deferred compensation  arrangements for employees  and former employees  of
the  Corporation and  its Subsidiaries  entered into  in the  ordinary course of
business; (viii) Debt of the Corporation  or any of its Restricted  Subsidiaries
which  constitutes Project Financing; (ix) Capital Lease Obligations (other than
Debt permitted by clause  (ii) above) having an  aggregate amount not  exceeding
$70  million; (x) Debt  (other than Debt  permitted by clauses  (i) through (ix)
above) in  an aggregate  principal amount  at any  one time  outstanding not  to
exceed  (a) $100  million, during the  period when any  Debt remains outstanding
under the Credit Agreement or any extension or renewal thereof or any successive
extension or renewal thereof, and (b)  $50 million, at any time thereafter;  and
(xi)  Debt  issued  in  connection with  any  extension,  renewal, substitution,
refinancing or  replacement of  Debt  permitted under  clauses (i)  through  (x)
above,  or  any  successive  extension,  renewal,  substitution,  refinancing or
replacement thereof; provided, that (a) the reincurrence of any such Debt  after
repayment  or prepayment of  such Debt shall  remain subject to  the provisos in
clauses (i) or (ii) above, as applicable, (b) the principal amount of such newly
issued Debt shall not be greater than the aggregate principal amount of the Debt
being extended, renewed, substituted, refinanced or replaced thereby and (c)  no
such Debt shall be

                                       81
<PAGE>
issued containing any recourse to the Corporation or its Subsidiaries additional
to  the recourse of the Debt being extended, renewed, substituted, refinanced or
replaced thereby. For purposes of the foregoing covenant, the term "Debt" means,
as applied to  any Person,  without duplication,  (i) all  indebtedness of  such
Person  for borrowed  money, (ii) all  indebtedness of such  Person evidenced by
notes, debentures, bonds or other  similar instruments, (iii) all  reimbursement
obligations  of such Person  with respect to  letters of credit  issued for such
Person's account  (other than  obligations  with respect  to letters  of  credit
securing  obligations entered  into in the  ordinary course of  business of such
Person to the  extent not  drawn on  or, if  and to  the extent  drawn on,  such
drawing  is reimbursed promptly following receipt by such Person of a demand for
reimbursement following payment on the  letter of credit), (iv) all  obligations
of  such Person to pay the deferred  purchase price of property or services (but
excluding trade accounts payable  in the ordinary course  of business), (v)  all
Capital  Lease  Obligations of  such Person,  (vi) all  obligations of  the type
referred to in clauses (i) through (v) of other Persons for the payment of which
such Person is  responsible or liable  as obligor, guarantor  or otherwise,  and
(vii)  all obligations  of the type  referred to  in clauses (i)  through (v) of
other Persons  secured by  any Lien  on any  property or  asset of  such  Person
(whether  or  not such  obligation  is assumed  by  such Person);  and  the term
"Interest Coverage Ratio" means,  with respect to any  period, the ratio of  (a)
the  Corporation's Consolidated Domestic EBITDA (which is defined to exclude the
impact of fresh  start accounting  principles) for such  period, minus  Domestic
Capital  Expenditures during such period, to (b) the Total Domestic Consolidated
Interest Expense during such period.

    Limitation on Restricted Payments

    So long as any Senior 2002  Notes are outstanding, the Corporation will  not
(i) declare or pay any dividend or make any distribution on any capital stock of
the Corporation (other than dividends or distributions payable solely in capital
stock  of the Corporation (excluding preferred stock redeemable at the option of
the holder prior to the first anniversary  of the stated maturity of the  Senior
2002  Notes ("Redeemable Preferred")) or rights  to acquire capital stock (other
than Redeemable  Preferred) of  the Corporation  or, as  part of  a  shareholder
rights  plan, rights to acquire capital  stock (other than Redeemable Preferred)
of another Person)  or (ii) purchase,  redeem, retire or  otherwise acquire,  or
permit  any Subsidiary  to purchase,  redeem, retire  or otherwise  acquire, for
value, any capital  stock of  the Corporation or  any option,  warrant or  other
right   to  acquire  capital  stock  of  the  Corporation  (any  such  dividend,
distribution,  purchase,  redemption,  retirement  or  other  acquisition  being
hereinafter  referred  to  as  a  "Restricted  Payment"),  if  at  the  time the
Corporation or such  Subsidiary makes such  Restricted Payment (a)  an Event  of
Default  shall have occurred and be  continuing (or would result therefrom); (b)
the Corporation could not or, after giving effect thereto, would not be able  to
incur  an additional $1.00  of Debt under  the restrictions set  forth under the
heading  "Limitation  Upon   Debt  of   the  Corporation   and  its   Restricted
Subsidiaries";  or (c) the  aggregate amount of such  Restricted Payment and all
other Restricted Payments made  since the Effective Date,  would exceed the  sum
of: (1) $10 million; plus (2) 25% of the Corporation's Domestic Consolidated Net
Income  (which  is  defined to  exclude  the  impact of  fresh  start accounting
adjustments) accrued during the period  (treated as one accounting period)  from
January 1, 1995 to December 31, 1996 (or, in case such Domestic Consolidated Net
Income  shall be  a deficit, minus  100% of such  deficit); plus (3)  50% of the
Corporation's  Domestic  Consolidated  Net  Income  accrued  during  the  period
(treated as one accounting period) on or after January 1, 1997 (or, in case such
Domestic  Consolidated  Net  Income  shall  be a  deficit,  minus  100%  of such
deficit); plus (4) the aggregate net  cash proceeds received by the  Corporation
from  the  issuance, sale  or  other disposition  (other  than to  a Subsidiary)
subsequent to the  Effective Date of  capital stock (or  any option, warrant  or
other  right to acquire capital stock), including  a sale or issuance of capital
stock (or options, warrants or other  rights to acquire capital stock) upon  the
conversion of Debt (convertible in accordance with its terms) issued or sold for
cash subsequent to the Effective Date (in which case such capital stock shall be
deemed to have been issued for the dollar amount of such Debt so converted). The
restrictions  described above  do not prohibit  (i) the payment  of any dividend
within 60  days after  the  date of  declaration thereof,  if  at said  date  of
declaration  such payment complied  with the restrictions  described above; (ii)
the acquisition of any  shares of capital stock  of the Corporation in  exchange
for,  or  upon  conversion of,  or  out  of the  proceeds  of  the substantially
concurrent sale for cash (other than to a

                                       82
<PAGE>
Subsidiary) of, shares of capital stock (other than Redeemable Preferred) of the
Corporation (in which  event neither  the receipt  nor the  application of  such
proceeds  shall be included in any  computation under this paragraph); (iii) the
acquisition of capital stock of the  Corporation for the purpose of  eliminating
fractional  shares; (iv) the distribution of,  or redemption by, the Corporation
of any rights to purchase capital stock  of the Corporation or any other  Person
which  rights were issued as  part of a shareholder  rights plan (in which event
such distribution or redemption shall not  be included in any computation  under
this  paragraph); (v) the issuance,  acquisition, reclassification or redemption
by the Corporation of  its capital stock pursuant  to the 1988  Recapitalization
(such  issuance,  acquisition,  reclassification  or  redemption  shall  not  be
included in  any computation  under  this paragraph);  (vi)  the making  of  any
payment  to dissenting stockholders of the Corporation pursuant to any appraisal
right arising under law or court order; (vii) the exercise and payment of  stock
appreciation rights pursuant to the Corporation's Management Performance Plan or
any  successor equity compensation plan or the  repurchase at any time after the
Effective  Date  of  Common  Stock  from  the  participants  in  the  Management
Performance  Plan or any successor equity  compensation plan in order to satisfy
withholding tax obligations (such payment or repurchase shall not be included in
any computation under  this paragraph);  (viii) the cash  settlement of  certain
restricted  shares of Common  Stock pursuant to  the Management Performance Plan
(in addition  to the  repurchases  permitted under  clause  (vii) above)  in  an
aggregate  amount of consideration not to  exceed $750,000 (such cash settlement
shall not be  included in any  computation under this  paragraph); and (ix)  any
payments  or distributions made pursuant to  and as described in the Prepackaged
Plan (such payments or  distributions shall not be  included in any  computation
under this paragraph).

    Limitation on Transactions with Affiliates

    So long as any Senior 2002 Notes are outstanding, the Corporation shall not,
and  shall not permit any Subsidiary to,  directly or indirectly, enter into any
transaction or  series of  related transactions  involving the  purchase,  sale,
lease  or exchange  of property  or the rendering  of any  service by  or to the
Corporation or any Subsidiary having a fair market value in excess of $5 million
(as reasonably determined by the Board) with any Affiliate (including financing,
acquisitions and divestitures),  unless the Board  by resolution (excluding  any
members of the Board having a financial interest in such transaction) concludes,
in  its reasonable good faith judgment, that  (i) such transaction is upon terms
no less favorable to the Corporation  or such Subsidiary than could be  obtained
in a comparable arm's-length transaction with a Person not an Affiliate and (ii)
such  transaction is  reasonably necessary or  desirable for  the Corporation or
such  Subsidiary  in  the  conduct   of  its  business  (including   financings,
acquisitions   and  divestitures).  Notwithstanding   the  requirements  of  the
foregoing sentence, transactions with any Affiliate that constitute transactions
in the ordinary course of business of such Affiliate and the Corporation or such
Subsidiary need  not be  approved by,  or disclosed  in advance  to, the  Board;
provided  such transactions are periodically reported to the Board on at least a
quarterly basis and otherwise meet the  requirements of subclauses (i) and  (ii)
of  the  preceding  sentence.  "Affiliate"  means  any  Person  other  than  the
Corporation or any Subsidiary  which (i) directly or  indirectly through one  or
more  intermediaries,  controls  the Corporation;  (ii)  directly  or indirectly
through one or more intermediaries, beneficially owns 5% or more of any class of
voting stock of  the Corporation, CGC  or any domestic  Subsidiary; or (iii)  is
controlled by any Person referred to in clauses (i) or (ii) above.

    Limitation on Guaranteed Debt

    So  long as any Senior  2002 Notes are outstanding, and  at any time when no
Debt remains outstanding under the  Credit Agreement, the Corporation shall  not
issue  or incur any Debt the repayment of principal or interest or both of which
is guaranteed by any  Subsidiary, unless each  such Subsidiary which  guarantees
such  other  Debt  also  guarantees  the  Senior  2002  Notes  on  a  direct and
unconditional basis.

    Restrictions on Merger

    So long as any Senior 2002 Notes are outstanding, the Corporation shall  not
consolidate  with or merge into, or sell or transfer all or substantially all of
its property and assets to, any Person unless (i) the

                                       83
<PAGE>
resulting, surviving  or transferee  Person (if  not the  Corporation) shall  be
organized  and existing under  the laws of  the United States  of America or any
State thereof  or the  District of  Columbia, and  such entity  shall  expressly
assume,  by a supplemental indenture, executed  and delivered to the Senior 2002
Note Trustee,in  form satisfactory  to the  Senior 2002  Note Trustee,  all  the
obligations  of the  Corporation under  the Senior  2002 Notes  and each  of the
Senior 2002 Note Indentures; (ii) immediately  prior to and after giving  effect
to  such transaction, no Event of Default shall have occurred and be continuing;
(iii) immediately  after  giving  effect to  such  transaction,  the  resulting,
surviving  or transferee Person could issue an additional $1.00 of Debt pursuant
to the restrictions  set forth under  the heading "Limitation  Upon Debt of  the
Corporation  and its Restricted Subsidiaries"  above; and (iv) immediately after
giving effect to such transaction, the resulting, surviving or transferee Person
shall have  Consolidated Net  Worth in  an amount  which is  not less  than  the
Consolidated  Net Worth (which may be negative) of the Corporation prior to such
transaction.

    Limitation on Sale and Leaseback Transactions

    So long as any Senior 2002 Notes are outstanding, except as set forth below,
the Corporation  will  not  itself,  and  it  will  not  permit  any  Restricted
Subsidiary  to, enter into  any transaction with any  bank, insurance company or
other lender or investor, or to  which any such bank, insurance company,  lender
or  investor  is a  party, providing  for the  leasing by  the Corporation  or a
Restricted Subsidiary of any Principal Operating Property owned at the Effective
Date which has  been or is  to be sold  or transferred by  the Corporation or  a
Restricted  Subsidiary  to such  bank, company,  lender or  investor, or  to any
Person to whom funds  have been or  are to be advanced  by such bank,  insurance
company, lender or investor on the security of such Principal Operating Property
(a  "sale and leaseback transaction"). The  restriction described above does not
apply to  any sale  and leaseback  transaction if  (i) the  Corporation or  such
Restricted  Subsidiary  could  create  Debt secured  by  a  Mortgage  (under the
restrictions set forth under "Limitation of Secured Debt of the Corporation  and
its Restricted Subsidiaries" below, without regard to clauses (i) through (viii)
thereof), on the Principal Operating Property to be leased in an amount equal to
the  Attributable  Debt  with respect  to  such sale  and  leaseback transaction
without equally and ratably securing the Securities; or (ii) within 120 calendar
days after  the sale  or transfer  has  been made  by the  Corporation or  by  a
Restricted  Subsidiary, the  Corporation or  a Restricted  Subsidiary applies an
amount equal  to the  greater of  (A)  the net  proceeds from  the sale  of  the
Principal Operating Property leased pursuant to such arrangement or (B) the fair
market  value  of the  Principal Operating  Property  so leased  at the  time of
entering into such  arrangement (as  determined in  any manner  approved by  the
Board) to the retirement of Senior Funded Debt of the Corporation or Funded Debt
of  a Restricted  Subsidiary; provided,  that the  amount to  be applied  to the
retirement of  Senior  Funded  Debt of  the  Corporation  or Funded  Debt  of  a
Restricted  Subsidiary will be reduced by (x) the principal amount of any Senior
2002 Notes (or other debentures or notes constituting Senior Funded Debt of  the
Corporation  or  Funded Debt  of a  Restricted  Subsidiary) delivered  within 75
calendar days after such  sale or transfer  to the Senior  2002 Note Trustee  or
other  applicable trustee for retirement and  cancellation and (y) the principal
amount of Senior Funded Debt of the  Corporation or Funded Debt of a  Restricted
Subsidiary,  other  than  Funded  Debt included  under  clause  (x), voluntarily
retired by the Corporation  or a Restricted Subsidiary  within 75 calendar  days
after  such  sale;  provided  further that,  notwithstanding  the  foregoing, no
retirement referred  to  in this  clause  (ii) may  be  effected by  payment  at
maturity  or pursuant  to any  mandatory sinking  fund payment  or any mandatory
prepayment provision; (iii) the lease in such sale and leaseback transaction  is
for  a period,  including renewals, of  no more  than three years;  or (iv) such
arrangement is between the  Corporation and a  Restricted Subsidiary or  between
Restricted Subsidiaries.

    Limitation   of  Secured  Debt   of  the  Corporation   and  its  Restricted
Subsidiaries

    So long as any Senior 2002  Notes are outstanding, the Corporation will  not
itself,  and will not permit any Restricted Subsidiary to, incur, issue, assume,
guarantee or suffer to exist any  indebtedness for borrowed money (for  purposes
hereof,  "Secured  Debt")  secured  by a  Mortgage  on  any  Principal Operating
Property of the Corporation or any Restricted Subsidiary, or any shares of stock
of or Debt of any Restricted Subsidiary, without effectively providing that  the
Senior  2002 Notes (together  with, if the Corporation  so determines, any other
Debt   of    the    Corporation    or   such    Restricted    Subsidiary    then

                                       84
<PAGE>
existing  or thereafter created which is  not subordinated Debt) will be secured
equally and ratably with (or, at the  option of the Corporation, prior to)  such
Secured  Debt so  long as such  Secured Debt  will be so  secured, unless, after
giving effect thereto, the  aggregate amount of all  such Secured Debt plus  all
Attributable  Debt of the Corporation and its Restricted Subsidiaries in respect
of sale  and leaseback  transactions (other  than those  exempt described  under
clauses  (ii) through (iv), inclusive, under "Limitation Upon Sale and Leaseback
Transactions" above) would not exceed 5% of Consolidated Net Tangible Assets (as
defined under "the 1986 Indenture Securities -- Limitation Upon Secured Debt  of
the  Corporation and its Restricted  Subsidiaries" above). This restriction will
not apply to, and there  will be excluded from  Secured Debt in any  computation
under  such  restriction, Debt  secured  by (i)  Mortgages  on, and  limited to,
property of, or on any shares of  stock of or Debt of, any corporation  existing
at  the time such corporation becomes a Restricted Subsidiary; (ii) Mortgages in
favor of the Corporation or any Restricted Subsidiary; (iii) Mortgages in  favor
of  any governmental body to secure progress, advance or other payments pursuant
to any contract or provision of any statute; (iv) (A) if made and continuing  in
the ordinary course of business, any Mortgage as security for the performance of
any  contract or undertaking  not directly or indirectly  in connection with the
borrowing of  money or  the  securing of  Debt, or  (B)  any Mortgage  with  any
governmental  agency required  or permitted  to qualify  the Corporation  or any
Restricted Subsidiary  to conduct  business, to  maintain self-insurance  or  to
obtain   the  benefits  of   any  law  pertaining   to  workmen's  compensation,
unemployment insurance, old  age pensions, social  security or similar  matters;
(v)  Mortgages for taxes, assessments or  governmental charges or levies if such
taxes, assessments, governmental charges or levies  will not at the time be  due
and  payable, or if the  same thereafter can be paid  without penalty, or if the
same are  being  contested  in  good  faith  by  appropriate  proceedings;  (vi)
Mortgages  created by or resulting from any litigation or legal proceeding which
at  the  time  is  currently  being  contested  in  good  faith  by  appropriate
proceedings;  or Mortgages arising  out of judgments  or awards as  to which the
time for prosecuting an appeal or  proceeding for review has not expired;  (vii)
Mortgages  on, and limited to, property (including leasehold estates), shares of
stock or Debt existing at the time of acquisition thereof (including acquisition
through merger or consolidation) or to secure the payment of all or any part  of
the  purchase  price  thereof or  construction  thereon  or to  secure  any Debt
incurred prior to, at the time of,  or within 120 calendar days after the  later
of  the acquisition, the completion of  construction or the commencement of full
operation of such property or within 120 calendar days after the acquisition  of
such shares or Debt for the purpose of financing all or any part of the purchase
price  thereof  or construction  thereon; or  (viii)  any extension,  renewal or
replacement (or successive extension, renewals  or replacements), as a whole  or
in part, of any Mortgage referred to in the foregoing clauses (i) through (vii),
inclusive,  provided that  (A) such  extension, renewal  or replacement Mortgage
will be limited to all or a part  of the same property, shares of stock or  Debt
that secured the Mortgage so extended, renewed or replaced (plus improvements on
such  property) and (B)  the Debt secured by  such Mortgage at  such time is not
increased. "Attributable  Debt" is  defined in  general to  mean the  total  net
amount  of rent  required to  be paid  during the  remaining term  of any lease,
discounted at a rate equal to 10 1/2%.

    EVENTS OF DEFAULT

    Each of the Senior  2002 Note Indentures contain  certain events of  default
("Events  of  Default"), remedies  upon such  Events  of Default  and provisions
regarding notices of default, waivers of default and certificates of  compliance
comparable to those contained in the 1986 Indenture, as supplemented by the Bond
Board  Resolutions. In  addition, an  Event of Default  shall be  deemed to have
occurred if the  Corporation or  USG Interiors shall  fail to  repay either  the
Extended  Revolving Credit  Facility or  the Bank Term  Loans when  due upon the
respective final scheduled maturity date thereof  and, as a result thereof,  the
Bank  Group  files a  Notice of  Actionable Default  under the  Collateral Trust
Agreement  or  a  written  demand  for  payment  under  any  of  the  Subsidiary
Guarantees. See "The 1986 Indenture Securities -- Events of Default."

    DEFEASANCE

    The  Senior  2002 Note  Indentures  contain provisions  regarding defeasance
comparable to those contained in the 1986 Indenture, as supplemented by the Bond
Board Resolutions. Upon defeasance of

                                       85
<PAGE>
the Senior 2002 Notes in accordance  with such provisions, the Corporation  will
no  longer be obligated to  comply with any of  the negative covenants described
under "Certain Covenants  of the  Corporation and  its Restricted  Subsidiaries"
above. See "The 1986 Indenture Securities -- Defeasance."

    MODIFICATION

    Each  of  the  Senior  2002  Note  Indentures  contain  provisions regarding
modifications  and  amendments  comparable  to  those  contained  in  the   1986
Indenture,  as  supplemented  by  the  Bond  Board  Resolutions.  See  "The 1986
Indenture Securities -- Modification of the Indenture."

                        DESCRIPTION OF COLLATERAL TRUST

    In connection with the 1988 Recapitalization, the Corporation established  a
collateral  trust pursuant to  the Collateral Trust Agreement,  dated as of July
13, 1988  (the "Old  Collateral  Trust Agreement"),  among the  Corporation  and
certain  of the Subsidiaries (collectively, the "Grantors") and Wilmington Trust
Company and William J. Wade (collectively, the "Collateral Trustee"). Under  the
Old  Collateral Trust Agreement, the Grantors  granted a first priority security
interest in (i) all of the capital stock of the Corporation's principal domestic
Subsidiaries, including U.S. Gypsum, USG  Interiors, L&W Supply and USG  Foreign
Investments, Ltd.; and (ii) 65% of the capital stock of CGC and certain other of
the  Corporation's  foreign Subsidiaries  (collectively, the  "Collateral"). The
Collateral is held in trust for the equal and ratable benefit of the holders  of
(i)  the Bank Debt  Obligations; and (ii) the  senior debt securities, including
the 1986 Indenture  Securities. In  connection with the  Restructuring, the  Old
Collateral  Trust Agreement was  amended to provide that  the Senior 1995 Notes,
the Senior  1998  Notes and  Senior  2002 Notes  (together  with the  Bank  Debt
Obligations  and  the previously  existing senior  debt securities,  the "Senior
Secured Obligations")  be equally  and  ratably secured  with the  other  Senior
Secured  Obligations (the "Collateral Trust  Agreement"). In connection with the
Note Placement,  the Collateral  Trust  Agreement is  being further  amended  to
provide  that the Senior 2001 Notes will be equally and ratably secured with the
other Senior Secured Obligations.

    Under the Collateral  Trust Agreement, an  "Actionable Default" occurs  upon
the  acceleration  of  any  of  the Senior  Secured  Obligations.  A  "Notice of
Actionable Default" may be given (i) in the case of an acceleration of the  Bank
Debt  Obligations, by the Administrative Agent under the Credit Agreement or the
holders of  a majority  of  the Bank  Debt  Obligations (the  "Requisite  Senior
Lenders");  or (ii) in the case of  an acceleration of any series of securities,
by the trustee under the indenture  governing such series or, if provided  under
the  terms of such series, by the requisite  holders of such series. A Notice of
Actionable Default may be withdrawn by the  party which gave it (i) at any  time
when  the Collateral Trustee has not exercised  any remedies with respect to the
Collateral as  a  result  thereof  or (ii)  after  the  Collateral  Trustee  has
exercised  remedies if the Requisite Senior  Lenders consent to such withdrawal.
In addition, a Notice of Actionable  Default is deemed withdrawn when the  party
giving  such  Notice has  acknowledged  payment in  full  of the  Senior Secured
Obligations owing to it. Until such time as any Notice of Actionable Default  is
given  (and after the time when any such Notice has been withdrawn), the pledgor
thereof may vote any  securities comprising the Collateral.  At any time when  a
Notice  of Actionable Default  has been given and  not withdrawn, the Collateral
Trustee may,  upon  written  notice  to the  Corporation,  vote  any  securities
comprising the Collateral.

    All of the Collateral will be released (i) upon the consent and direction of
the  Bank Group  or (ii)  at such time  as the  Bank Debt  Obligations have been
repaid in  full. In  addition, the  Requisite Senior  Lenders may  instruct  the
Collateral Trustee to release specified portions of the Collateral (e.g., in the
case  of asset sales approved by the  holders of the Bank Debt Obligations under
the Credit  Agreement) provided  that no  Actionable Default  has occurred.  The
holders  of  the Corporation's  Securities  do not  have  any similar  rights to
authorize release of  the Collateral. Under  the terms of  the Collateral  Trust
Agreement,  the Collateral and  proceeds so released revert  to the Grantors and
are not required to be distributed into the Collateral Account (defined  below).
For  a description  of the rights  of the  holders of the  Bank Debt Obligations
under the Credit Agreement, see "Description of Credit Agreement."

                                       86
<PAGE>
    Following receipt of a  Notice of Actionable  Default, the Requisite  Senior
Lenders  have the right to direct the Collateral Trustee to exercise, or refrain
from exercising, any  rights or  remedies with  respect to  the Collateral.  The
holders of the Securities do not have any similar right to direct the actions of
the  Collateral  Trustee.  See  "Risk Factors  --  Control  of  Collateral Trust
Agreement by Bank Group." In the absence of relevant directions, the  Collateral
Trustee has the power to act on its own initiative. At any time when a Notice of
Actionable Default has been given and not withdrawn, the Collateral Trustee may,
and  at the direction of the Requisite Senior Lenders shall, sell the Collateral
for the benefit of the holders of the Senior Secured Obligations. Funds  derived
from  any sale  of Collateral  and (at  all times  after a  Notice of Actionable
Default has been given and  not withdrawn) dividends and distributions  received
on  the Collateral  are to  be deposited  to the  collateral account established
under the Collateral Trust Agreement (the "Collateral Account"). The  Collateral
Trustee  shall distribute all  moneys in the Collateral  Account as follows: (i)
first, to the Collateral Trustee for unpaid fees; (ii) second, to the holders of
the Senior Secured Obligations ratably (on  the basis of unpaid amounts) to  (a)
pay  the portion of the Senior Secured Obligations which is then due and payable
and (b) provide cash collateral (on  a dollar-for-dollar basis) for the  portion
of  the Senior Secured Obligations which is  not then due and payable; and (iii)
third, to the Grantors.

                          DESCRIPTION OF CAPITAL STOCK

GENERAL MATTERS

   
    The total  number  of shares  of  capital  stock that  the  Corporation  has
authority  to issue is  236,000,000, consisting of  200,000,000 shares of Common
Stock, par value $0.10 per share, and 36,000,000 shares of Preferred Stock,  par
value  $1.00 per share.  Upon completion of this  Offering, 44,158,085 shares of
Common Stock  will  be issued  and  outstanding,  assuming no  exercise  of  the
Underwriters'  over-allotment option, and  no shares of  Preferred Stock will be
issued or  outstanding.  The following  summary  of certain  provisions  of  the
Corporation's  capital stock describes all material  provisions of, but does not
purport to be complete and is subject to, and qualified in its entirety by,  the
Certificate  of Incorporation and the By-laws  of the Corporation, each of which
is included as an exhibit to the Registration Statement of which this Prospectus
forms a part.
    

COMMON STOCK

    The issued and  outstanding shares of  Common Stock are,  and the shares  of
Common  Stock being offered will be upon payment therefor, validly issued, fully
paid and  nonassessable. Subject  to the  prior  rights of  the holders  of  any
Preferred  Stock, if any, the holders of  outstanding shares of Common Stock are
entitled to receive dividends out of  assets legally available therefor at  such
times  and in  such amounts  as the  Board of  Directors may  from time  to time
determine. The Corporation  is currently  a party to  various credit  agreements
which  prohibit the payment  of dividends. See "Risk  Factors -- Restrictions on
Common Stock  Dividends." Upon  liquidation, dissolution  or winding  up of  the
Corporation,  the holders of Common  Stock are entitled to  receive pro rata the
assets of the Corporation  which are legally  available for distribution,  after
payment  of all debts and  other liabilities and subject  to the prior rights of
any holders of Preferred Stock then outstanding, if any. Each outstanding  share
of  Common Stock is entitled to  one vote on all matters  submitted to a vote of
stockholders. There is no cumulative voting.

   
    The Common Stock of the Corporation is traded on the New York Stock Exchange
under the symbol "USG." On March 8,  1994, the last reported sales price of  the
Common  Stock, as reported  on the New  York Stock Exchange  Composite Tape, was
$29 7/8 per share.
    

CERTAIN PROVISIONS OF THE CERTIFICATE OF INCORPORATION AND BY-LAWS

    The Certificate  of Incorporation  and By-laws  of the  Corporation  contain
certain provisions that are intended to enhance the likelihood of continuity and
stability  in the  composition of  the Board  and which  may have  the effect of
delaying, deferring or preventing a future takeover or change in control of  the
Corporation  unless such takeover or change in control is approved by the Board.
Such provisions  may  also  render the  removal  of  the current  Board  and  of
management more difficult.

                                       87
<PAGE>
    The Corporation's Certificate of Incorporation provides for three classes of
directors,  each of which  is to be elected  on a staggered basis  for a term of
three years. At present, the  Board is composed of  15 directors. Each class  of
directors  is composed of five members. In connection with the Prepackaged Plan,
representatives of certain creditors of the  Corporation nominated a total of  5
directors. See "Management -- Directors of the Corporation." If the Water Street
Directors  are removed from office without  the consent of Water Street, certain
restrictions on the Water Street Entities  relating to the purchase, voting  and
transfer  of shares of  Common Stock will  terminate. See "Certain Relationships
and Related Transactions -- Agreement with Water Street Entities."

    The affirmative vote or consent of at  least 80% of the voting power of  all
of the stock of the Corporation entitled to vote in the election of directors is
required  to  approve certain  types of  transactions with  another corporation,
person or  entity  which,  directly  or  indirectly, owns  5%  or  more  of  the
outstanding  shares of any class of the Corporation's stock which is entitled to
vote in  the  election of  directors.  Such  transactions include  a  merger  or
consolidation  of the  Corporation or  any of its  Subsidiaries, sale  of all or
substantially all of the assets of the Corporation or any of its Subsidiaries or
the sale or lease of any assets  (except assets having an aggregate fair  market
value of less than $10 million) in exchange for certain types of securities. The
Board  may render  such super-majority  voting requirements  inapplicable by (i)
approving a memorandum of understanding  with such other corporation, person  or
entity  with  respect  to  such  a  transaction  prior  to  the  time  that such
corporation, person or entity becomes the beneficial owner of 5% or more of  any
class  of voting stock or (ii) approving  such a transaction after the time that
such other corporation, person or entity  becomes the beneficial owner of 5%  or
more  of any class  of voting stock  if a majority  of the members  of the Board
approving such transaction  were duly elected  and acting members  of the  Board
prior  to the  time that  such other  corporation, person  or entity  became the
beneficial owner of 5% or more of any class of voting stock. This super-majority
voting requirement applies to Water Street.

    Any action to be taken at any  annual or special meeting of stockholders  of
the  Corporation may only be taken without a  meeting if a consent in writing is
signed by the holders  of at least  80% of the voting  power of the  Corporation
entitled to vote with respect to such subject matter.

    The  provisions in the Certificate of Incorporation described above may only
be amended by 80% of the voting power of the Corporation entitled to vote in the
election of directors.

PREFERRED STOCK

    Upon consummation of  the Offering,  there will  be no  shares of  Preferred
Stock  issued or outstanding. The Corporation  has no present intention to issue
any shares of  Preferred Stock.  However, the Corporation's  Board of  Directors
may,  without further  action by  the Corporation's  stockholders, from  time to
time, direct the issuance of shares of Preferred Stock in series and may, at the
time of  issuance, determine  the rights,  preferences and  limitations of  each
series.  Satisfaction  of  any  dividend preferences  of  outstanding  shares of
Preferred Stock would reduce  the amount of funds  available for the payment  of
dividends on shares of Common Stock. Holders of shares of Preferred Stock may be
entitled  to  receive a  preference  payment in  the  event of  any liquidation,
dissolution or winding-up of the Corporation  before any payment is made to  the
holders  of shares of Common Stock. Under certain circumstances, the issuance of
shares of Preferred  Stock may  render more difficult  or tend  to discourage  a
merger,  tender offer or proxy contest, the assumption of control by a holder of
a large  block of  the  Corporation's securities  or  the removal  of  incumbent
management.  The  Board of  Directors  of the  Corporation,  without stockholder
approval, may issue shares of Preferred Stock with voting and conversion  rights
which could adversely affect the holders of shares of Common Stock.

                                       88
<PAGE>
CERTAIN PROVISIONS OF DELAWARE LAW

    The Corporation is governed by the provisions of Section 203 of the Delaware
General  Corporation  Law.  In  general, the  law  prohibits  a  public Delaware
corporation from  engaging  in  a "business  combination"  with  an  "interested
stockholder"  for a period of  three years after the  date of the transaction in
which  the  person  became  an  interested  stockholder,  unless  the   business
combination  is approved in a prescribed manner. "Business combination" includes
mergers, asset sales and other transactions resulting in a financial benefit  to
the  stockholder. An  "interested stockholder"  is a  person who,  together with
affiliates and associates, owns (or within three years, did own) 15% or more  of
the corporation's voting stock.

SHAREHOLDER RIGHTS PLAN

    The  Corporation's  rights agreement  (the  "Rights Agreement")  between the
Corporation and  Harris  Trust  (the "Rights  Agent")  entitles  the  registered
stockholder  to  purchase from  the  Corporation one-hundredth  share  of Junior
Series C Preferred Stock at a price of $35 per one-hundredth share (the  "Rights
Purchase Price"), subject to adjustment.

    Until  the earlier to  occur of (i) 10  days following the  date of a public
announcement that a  person or  group of  affiliated or  associated persons  (an
"Acquiring  Person"), other than  the Corporation, any  employee benefit plan of
the Corporation, any entity holding Common Stock for or pursuant to the terms of
any such plan or, except as described  below, Water Street or its affiliated  or
associated   persons,  has  beneficial  ownership  (as  defined  in  the  Rights
Agreement) of 20% or  more of the  then outstanding Common  Stock, (ii) 10  days
following the date of a public announcement that a person or group of affiliated
or  associated persons (an "Adverse Person")  has beneficial ownership of 10% or
more of the  then outstanding Common  Stock, the acquisition  of which has  been
determined  by the Board  to present an  actual threat of  an acquisition of the
Corporation that  would  not  be  in the  best  interest  of  the  Corporation's
stockholders  or (iii) 10 days following the  date of commencement of, or public
announcement of, a tender offer or exchange offer for 30% or more of the  Common
Stock  (the earliest  of such dates  being called the  "Distribution Date"), the
Rights will be evidenced, with respect to the Common Stock, by the  certificates
which  will represent  such Common  Stock. The  Rights Agreement  provides that,
until the Distribution Date, the Rights  will be transferred with and only  with
the   Common  Stock  certificates.  Until  the  Distribution  Date  (or  earlier
redemption or expiration of the Rights), Common Stock certificates issued  after
May  6, 1993 upon transfer or new  issuance of shares of Common Stock (including
any shares of Common Stock issued pursuant to the Restructuring) will contain  a
notation incorporating the Rights Agreement by reference.

    The  Rights Agreement provides that, until December 31, 1997, Water Street's
beneficial ownership of  any shares  of common  Stock (or  warrants to  purchase
Common  Stock or securities exchangeable for or convertible into Common Stock or
warrants  to  purchase   any  such  exchangeable   or  convertible   securities)
(collectively,  "Specified  Securities")  acquired  pursuant  to  any  Permitted
Acquisition (as defined in the Water Street Agreement) will not cause any of the
following to occur: (a) any Water Street Entity to become an Acquiring Person or
an Adverse Person, (b) the Distribution  Date, (c) the transfer of Common  Stock
of  the Corporation (or its successor by operation  of law or under the terms of
the Rights Agreement) no longer  constituting the transfer of associated  Rights
or the distribution of Rights Certificates, (d) the Rights becoming exercisable,
non-redeemable  or non-amendable, (e) a condition the result of which Rights may
be exchanged for Common Stock in  the manner described in the Rights  Agreement,
or  (f) the Rights  Purchase Price or  the amount of  securities acquirable upon
payment thereof  to  be adjusted  (collectively,  the "Specified  Events").  The
Rights Agreement further provides that, until the tenth anniversary of the Water
Street  Agreement, (i) from and after any distribution of shares of Common Stock
by Water Street to its partners and until the Water Street Entities beneficially
own a percentage of the  outstanding shares of Common  Stock which is less  than
10%  of the outstanding  Common Stock (the  "Flip-In Threshold"), the beneficial
ownership by  the  Water  Street  Entities (other  than  Water  Street)  of  any
Specified Securities acquired pursuant to any Permitted Acquisition or Permitted
Acquisitions  shall not cause any  of the Specified Events  to occur, so long as
the Water Street Entities shall have voted  the shares of Common Stock owned  by
them in accordance with the terms of the Water

                                       89
<PAGE>
Street  Agreement;  (ii)  until the  Water  Street Entities  beneficially  own a
percentage of the  outstanding shares  of Common Stock  which is  less than  the
Flip-In  Threshold,  the  acquisition  (other  than  pursuant  to  any Permitted
Acquisition or  Permitted  Acquisitions) by  the  Water Street  Entities  (which
acquisition,  in the case of persons other  than natural persons, is made in the
ordinary course  of business),  including  but not  limited to  acquisitions  on
behalf  of proprietary accounts  and accounts with  respect to which  any of the
Water Street Entities has investment discretion, of up to an aggregate of 10% of
the outstanding shares  of Common  Stock at the  time of  acquisition shall  not
cause  any of the Specified  Events to occur; (iii)  the acquisition (other than
pursuant to any Permitted  Acquisition or Permitted  Acquisitions) by the  Water
Street  Entities (which acquisition,  in the case of  persons other than natural
persons, is made in  the ordinary course  of business) of  an aggregate of  more
than  10% of the outstanding  shares of Common Stock  at the time of acquisition
shall not cause any of the Specified Events to occur, provided that, within  ten
business days after the Corporation notifies Water Street of such ownership, the
Water  Street Entities sell or otherwise transfer or dispose of Common Stock, so
that, after giving effect to those transactions, the number of shares of  Common
Stock  beneficially owned by the Water  Street Entities that were acquired other
than pursuant  to any  Permitted Acquisition  or Permitted  Acquisitions is  not
greater than an aggregate of 10% of the then outstanding shares of Common Stock;
and  (iv)  any  percentage  increase in  any  Water  Street  Entity's beneficial
ownership  of  outstanding  shares  of  Common  Stock  that  results  from   the
acquisition  of shares  of Common Stock  by the Corporation  or its Subsidiaries
shall not cause any Specified Event to occur.

    Until the  Distribution Date  (or earlier  redemption or  expiration of  the
Rights),  the surrender for  transfer of any Common  Stock certificate also will
constitute  the  transfer  of  the  Rights  associated  with  the  Common  Stock
represented   by  such  certificate.  As   soon  as  practicable  following  the
Distribution Date,  separate certificates  evidencing  the Rights  (the  "Rights
Certificates") will be mailed to holders of record of the Common Stock as of the
close of business on the Distribution Date and such separate Rights Certificates
alone  will  evidence  the Rights.  The  Rights  are not  exercisable  until the
Distribution Date. The Rights will expire on May 6, 2003 (the "Final  Expiration
Date"),  unless earlier redeemed by the  Corporation as described below. Until a
Right is  exercised, the  holder thereof,  as such,  will have  no rights  as  a
stockholder of the Corporation, including, without limitation, the right to vote
or to receive dividends.

    In  the event that, at any time  after the first public announcement that an
Acquiring Person  or an  Adverse  Person has  become  such, the  Corporation  is
involved  in a merger or other business combination where the Corporation is not
the surviving corporation or where Common Stock is changed or exchanged or in  a
transaction  where 50% or more  of its consolidated assets  or earning power are
sold, proper provision will be made so  that each holder of a Right (other  than
such  Acquiring  Person or  Adverse Person)  will thereafter  have the  right to
receive, upon the  exercise thereof at  the then-current exercise  price of  the
Right,  that number of shares of common  stock of the acquiring company which at
the time of such transaction would have a market value of two times the exercise
price of the Right.

    In the event that the Corporation  is the surviving corporation in a  merger
or other business combination involving an Acquiring Person or an Adverse Person
and  the Common Stock remains outstanding and  unchanged or in the event that an
Acquiring Person or an Adverse Person engages in one of a number of self-dealing
transactions specified in the Rights Agreement, proper provision will be made so
that each holder of  a Right, other  than Rights that  are or were  beneficially
owned  (as  defined in  the Rights  Agreement)  by the  Acquiring Person  or the
Adverse Person, as the case  may be, on the  earliest of the Distribution  Date,
the  date the Acquiring  Person acquires 20%  or more of  the outstanding Common
Stock or the  date the  Adverse Person becomes  such (which  will thereafter  be
void),  will thereafter  have the  right to  receive upon  exercise thereof that
number of shares  of Common  Stock having  a market value  at the  time of  such
transaction  of two times  the exercise price  of the Right.  In addition, under
certain circumstances the Board has the option of exchanging all or part of  the
Rights  (excluding void Rights) for Common Stock  in the manner described in the
Rights Agreement.  The  Rights Agreement  also  contains a  so-called  "flip-in"
feature  which provides that if any person  or group of affiliated or associated
persons becomes an  Adverse Person,  then the  provisions of  the preceding  two
sentences shall apply.

                                       90
<PAGE>
    The  Rights Agreement also  provides that, at  any time prior  to the public
announcement that an Acquiring Person or an Adverse Person has become such,  the
Board  may (i) redeem the Rights  in whole, but not in  part, at a price of $.01
per Right (the "Redemption Price") or (ii) amend the New Rights Agreement in any
respect other  than  any amendment  which  would reduce  the  Redemption  Price,
shorten  the Final Expiration Date or increase the Rights Purchase Price. At any
time after the public  announcement that an Acquiring  Person or Adverse  Person
has become such, the Corporation may amend the Rights Agreement only in a manner
which would not adversely affect the holders of the Rights. Immediately upon the
action  of the Board  electing to redeem  the Rights, the  right to exercise the
Rights will terminate and  the only right  of the holders of  Rights will be  to
receive the Redemption Price.

    The  Purchase Price payable, and the number  of shares of Series C Preferred
Stock or other securities or property issuable, upon exercise of the Rights  are
subject  to adjustment from time to time to prevent dilution as described in the
Rights Agreement. With certain exceptions, no adjustment in the Rights  Purchase
Price  will be required until cumulative adjustments require an adjustment of at
least 1% in  such Rights  Purchase Price. No  fractional shares  will be  issued
(other  than fractions which are integral multiples of one hundredth of a share,
which may,  at the  election  of the  Corporation,  be evidenced  by  depositary
receipts),  and in lieu thereof, an adjustment in cash will be made based on the
market price of the Series C Preferred  Stock on the last trading date prior  to
the date of exercise.

    The Series C Preferred Stock purchasable upon exercise of the Rights will be
nonredeemable  and junior  to any outstanding  shares of preferred  stock of the
Corporation. Each  share  of  Series  C Preferred  Stock  will  have  a  minimum
preferential  quarterly dividend rate of $25 per  share, but will be entitled to
receive, in the aggregate, a dividend of 100 times the dividend declared on  the
shares of Common Stock. In the event of liquidation, the holders of the Series C
Preferred  Stock will receive a minimum preferential liquidation payment of $100
per share, but  will be  entitled to  receive an  aggregate liquidation  payment
equal  to 100 times  the payment made per  share of Common  Stock. Each share of
Series C Preferred Stock  will have 100 votes,  voting together with the  Common
Stock.  In the event of any merger, consolidation, or other transaction in which
shares of Common  Stock are exchanged,  each share of  Series C Preferred  Stock
will  be  entitled  to  receive  100  times the  amount  and  the  same  type of
consideration received per  share of Common  Stock. The rights  of the Series  C
Preferred  Stock as to  dividends, liquidation and  voting, and in  the event of
mergers and consolidations, are protected by customary anti-dilution provisions.
Because of the nature  of the Series C  Preferred Stock's dividend,  liquidation
and  voting rights, the value  of the interest in a  share of Series C Preferred
Stock should approximate the value of one share of Common Stock.

    The Rights  have  certain  anti-takeover  effects.  The  Rights  will  cause
substantial  dilution  to  a  person  or  group  that  attempts  to  acquire the
Corporation on terms  not approved  by the Board,  except pursuant  to an  offer
conditioned  on a substantial number of Rights being acquired. The Rights should
not interfere with  any merger  or other  business combination  approved by  the
Board  since the  Rights may be  redeemed by  the Corporation at  $.01 per Right
prior to the public announcement that a person has become an Acquiring Person or
an Adverse Person.

    In connection with the settlement of  certain litigation at the time of  the
1988 Recapitalization, the Corporation agreed, subject to certain conditions, to
submit  the question of whether to redeem the Rights to a stockholder vote three
years after  consummation  of  the 1988  Recapitalization.  At  the  stockholder
meeting  held on  May 8,  1991, the Corporation  submitted such  question to the
stockholders. There were 4,797,682 votes cast in favor of redemption, 30,443,533
votes cast against redemption and 1,863,275 abstentions. The proposal to  redeem
the Rights accordingly was not adopted.

LIMITATIONS ON LIABILITY AND INDEMNIFICATION OF OFFICERS AND DIRECTORS

    The  Certificate of Incorporation  limits the liability  of directors to the
fullest extent permitted by the  Delaware General Corporation Law. In  addition,
the  Certificate of Incorporation provides  that the Corporation shall indemnify
directors and officers  of the Corporation  to the fullest  extent permitted  by
such law.

                                       91
<PAGE>
TRANSFER AGENT AND REGISTRAR

    The  Transfer Agent and Registrar  for the Common Stock  is Harris Trust and
Savings Bank.

                       CERTAIN UNITED STATES FEDERAL TAX
                     CONSEQUENCES FOR NON-U.S. STOCKHOLDERS

    THE FOLLOWING DISCUSSION IS PROVIDED  FOR GENERAL INFORMATION ONLY; IT  DOES
NOT  CONSIDER  ALL U.S.  FEDERAL  TAX CONSEQUENCES  THAT  MAY BE  RELEVANT  TO A
PARTICULAR NON-U.S. STOCKHOLDER  IN LIGHT OF  SUCH STOCKHOLDER'S PARTICULAR  TAX
POSITION  AND DOES NOT DEAL WITH STATE,  LOCAL OR FOREIGN TAX CONSEQUENCES. THIS
DISCUSSION IS BASED ON THE INTERNAL REVENUE CODE, EXISTING AND PROPOSED TREASURY
REGULATIONS, AND  JUDICIAL AND  ADMINISTRATIVE INTERPRETATIONS  AS OF  THE  DATE
HEREOF,  ALL OF WHICH ARE SUBJECT TO  CHANGE. PROSPECTIVE INVESTORS ARE URGED TO
CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE U.S. FEDERAL, STATE AND LOCAL
TAX CONSEQUENCES OF OWNING AND DISPOSING OF  SHARES OF COMMON STOCK, AS WELL  AS
ANY TAX CONSEQUENCES RESULTING FROM THE LAWS OF ANY OTHER TAXING JURISDICTION.

GENERAL

    This  is a general discussion of certain  U.S. federal income and estate tax
consequences of the  ownership and disposition  of shares of  Common Stock by  a
person  that  is a  Non-U.S.  Stockholder. For  purposes  of this  discussion, a
"Non-U.S. Stockholder" means any  person other than (i)  an individual who is  a
citizen  or resident of  the United States, (ii)  a corporation, partnership, or
other entity created or organized in or  under the laws of the United States  or
any  political subdivision thereof,  or (iii) an  estate or trust  the income of
which is subject to U.S. federal income taxation regardless of its source.

DIVIDENDS

    In the event that dividends are paid on the Common Stock, any such dividends
paid to  a Non-U.S.  Stockholder will  be  subject to  U.S. federal  income  tax
withholding  at a rate of 30% of the  amount of the dividend (or such lower rate
as may  be prescribed  by an  applicable  income tax  treaty). However,  if  the
dividend  is effectively connected with the conduct  of a U.S. trade or business
by the Non-U.S. Stockholder and the Non-U.S. Stockholder properly files Internal
Revenue Service ("IRS") Form 4224 (or other applicable form required by the IRS)
with the Corporation or  its dividend-paying agent, then  the dividend (i)  will
not  be subject to income tax withholding, and (ii) except to the extent that an
applicable income tax treaty provides otherwise, will be subject to U.S. federal
income tax at the regular graduated rates. In the case of a Non-U.S. Stockholder
that is a corporation,  such effectively connected dividend  income may also  be
subject  to the  branch profits  tax (which  generally is  imposed on  a foreign
corporation on the repatriation from the United States of effectively  connected
earnings  and profits) at a 30% rate (or such lower rate as may be prescribed by
an applicable income tax treaty).

    To determine the applicability of an income tax treaty providing for a lower
rate of  income tax  withholding, dividends  paid  to an  address in  a  foreign
country are presumed under current Treasury regulations to be paid to a resident
of that country. The Corporation or its dividend-paying agent may generally rely
on  the  Non-U.S.  Stockholder's foreign  address  of  record as  the  basis for
allowing the benefit  of a  reduced treaty rate  with respect  to the  dividends
being  paid. However, proposed Treasury regulations  which have not been finally
adopted would require Non-U.S. Stockholders to satisfy certain certification and
other requirements to  obtain the benefit  of any applicable  income tax  treaty
providing for a lower rate of withholding tax on dividends.

    A  Non-U.S.  Stockholder  that  is  eligible  for  a  reduced  rate  of U.S.
withholding tax pursuant  to an income  tax treaty  may obtain a  refund of  any
excess amounts currently withheld by filing an appropriate claim for refund with
the IRS.

    The  Corporation  is required  to report  annually  to the  IRS and  to each
Non-U.S. Stockholder  the  amount of  dividends  paid  to, and  the  income  tax
withheld  with respect to,  such stockholder. Such information  may also be made
available by the IRS to the tax authorities of the country in which the Non-U.S.
Stockholder resides.

                                       92
<PAGE>
DISPOSITION OF COMMON STOCK

    Generally, a Non-U.S. Stockholder will not be subject to U.S. federal income
tax on any gain recognized upon the disposition of such stockholder's shares  of
Common  Stock unless (i)  the Corporation is  or has been  a "U.S. real property
holding corporation" for federal income tax purposes (which the Corporation does
not believe that it is  or is likely to become)  and, since the Common Stock  is
regularly  traded on an established  securities market, the Non-U.S. Stockholder
held, directly or indirectly, at any time during the five-year period ending  on
the  date of  disposition, more than  5% of the  Common Stock, (ii)  the gain is
effectively connected with a U.S. trade  or business carried on by the  Non-U.S.
Stockholder  or, if  an income  tax treaty  applies, is  attributable to  a U.S.
permanent establishment  maintained  by  the  Non-U.S.  Stockholder,  (iii)  the
Non-U.S.  Stockholder is an individual  who holds the Common  Stock as a capital
asset, such stockholder is present in the United States for 183 days or more  in
the  taxable year of the  disposition and either the  Non-U.S. Stockholder has a
"tax home" in the United States for U.S. federal income tax purposes or the sale
is attributable to an office or other fixed place of business maintained by  the
Non-U.S.  Stockholder in the United States,  or (iv) the Non-U.S. Stockholder is
subject to tax pursuant to the provisions of U.S. tax law applicable to  certain
U.S. expatriates.

ESTATE TAX

    Shares of Common Stock owned or treated as owned by an individual who is not
a  citizen  or resident  (as specifically  defined for  U.S. federal  estate tax
purposes) of  the  United States  at  the  time of  his  or her  death  will  be
includible  in  the  individual's  gross  estate  for  U.S.  federal  estate tax
purposes, unless  an  applicable  estate tax  treaty  provides  otherwise.  Such
individual's  estate  may be  subject  to U.S.  federal  estate tax  on property
includible in the estate for U.S. federal tax purposes.

U.S. INFORMATION REPORTING REQUIREMENTS AND BACKUP WITHHOLDING

    United States backup withholding (which generally is imposed at the rate  of
31% on certain payments to persons that fail to furnish the information required
under  the United States information  reporting requirements) will generally not
apply to dividends  paid on  Common Stock  to a  non-U.S. holder  at an  address
outside the United States.

    The  payment of  the proceeds  from the  disposition of  Common Stock  to or
through the United  States office  of a broker  will be  subject to  information
reporting  and backup withholding unless the holder, under penalties of perjury,
certifies, among other things, its status as a Non-U.S. Stockholder or otherwise
establishes an exemption. The  payment of the proceeds  from the disposition  of
Common  Stock to or through a non-U.S. office of a broker will generally, except
as noted below, not be subject to backup withholding and information  reporting.
In  the case of proceeds from a disposition of Common Stock paid to or through a
non-U.S. office  of a  broker that  is (i)  a U.S.  person, (ii)  a  "controlled
foreign  corporation" for United  States federal income tax  purposes or (iii) a
foreign person 50% or more  of whose gross income  from all sources for  certain
periods  was  effectively  connected with  a  United States  trade  or business,
information reporting (but not backup withholding) will apply unless the  broker
has  documentary evidence in its files that  the owner is a Non-U.S. Stockholder
(unless the broker has actual knowledge to the contrary).

    Any amounts withheld under the backup withholding rules from a payment to  a
Non-U.S.  Stockholder  will  be  refunded  (or  credited  against  the  Non-U.S.
Stockholder's United States federal income tax liability, if any), provided that
the required information is furnished to the IRS.

    The backup withholding and information  reporting rules are currently  under
review  by the Treasury Department and their  application to the Common Stock is
subject to change.

                                       93
<PAGE>
                                  UNDERWRITING

    Subject to the  terms and  conditions set forth  in an  agreement among  the
Corporation,  the  Selling  Stockholder  and the  U.S.  Underwriters  (the "U.S.
Underwriting Agreement"),  the  Corporation  and the  Selling  Stockholder  have
agreed  to  sell  to  each  of the  U.S.  Underwriters  named  below  (the "U.S.
Underwriters"), and each  of the  U.S. Underwriters, for  whom Salomon  Brothers
Inc,  Lazard  Freres  &  Co.  and  Smith  Barney  Shearson  Inc.  are  acting as
representatives (the "U.S. Representatives"),  has severally agreed to  purchase
from  the Corporation and the Selling Stockholder the number of shares of Common
Stock set forth opposite its name below:

<TABLE>
<CAPTION>
                                                                                   NUMBER OF
                               U.S. UNDERWRITER                                     SHARES
- -------------------------------------------------------------------------------  -------------
<S>                                                                              <C>
Salomon Brothers Inc...........................................................      1,923,334
Lazard Freres & Co.............................................................      1,923,333
Smith Barney Shearson Inc......................................................      1,923,333
Bear, Stearns & Co. Inc........................................................        145,000
CS First Boston Corporation....................................................        145,000
Alex. Brown & Sons Incorporated................................................        145,000
BT Securities Corporation......................................................        145,000
Dean Witter Reynolds Inc.......................................................        145,000
Dillon, Read & Co. Inc.........................................................        145,000
Donaldson, Lufkin & Jenrette Securities Corporation............................        145,000
A.G. Edwards & Sons, Inc.......................................................        145,000
Kidder, Peabody & Co. Incorporated.............................................        145,000
Lehman Brothers Inc............................................................        145,000
Merrill Lynch, Pierce, Fenner & Smith Incorporated.............................        145,000
Montgomery Securities..........................................................        145,000
J.P. Morgan Securities Inc.....................................................        145,000
Morgan Stanley & Co. Incorporated..............................................        145,000
NatWest Securities Limited.....................................................        145,000
Oppenheimer & Co., Inc.........................................................        145,000
Prudential Securities Incorporated.............................................        145,000
S.G. Warburg & Co. Inc.........................................................        145,000
Wertheim Schroder & Co. Incorporated...........................................        145,000
William Blair & Company........................................................         75,000
Dain Bosworth Incorporated.....................................................         75,000
Kemper Securities, Inc.........................................................         75,000
Legg Mason Wood Walker, Incorporated...........................................         75,000
McDonald & Company Securities, Inc.............................................         75,000
Morgan Keegan & Company, Inc...................................................         75,000
Piper Jaffray Inc..............................................................         75,000
Raymond James & Associates, Inc................................................         75,000
The Robinson-Humphrey Company, Inc.............................................         75,000
Sutro & Co. Incorporated.......................................................         75,000
Tucker Anthony Incorporated....................................................         75,000
Wheat First Securities Butcher & Singer Capital Markets........................         75,000
Advest, Inc....................................................................         40,000
Arnhold and S. Bleichroeder, Inc...............................................         40,000
Robert W. Baird & Co. Incorporated.............................................         40,000
Baird, Patrick & Co., Inc......................................................         40,000
George K. Baum & Company.......................................................         40,000
The Chicago Corporation........................................................         40,000
Clearly Gull Reiland & McDevitt Inc............................................         40,000
First Albany Corporation.......................................................         40,000
</TABLE>

                                       94
<PAGE>
<TABLE>
<CAPTION>
                                                                                   NUMBER OF
                               U.S. UNDERWRITER                                     SHARES
- -------------------------------------------------------------------------------  -------------
<S>                                                                              <C>
First Equity Corporation of Florida............................................         40,000
First of Michigan Corporation..................................................         40,000
Genesis Merchant Group Securities..............................................         40,000
Hamilton Investments, Inc......................................................         40,000
Janney Montgomery Scott Inc....................................................         40,000
Edward D. Jones & Co...........................................................         40,000
Ladenburg, Thalmann & Co. Inc..................................................         40,000
C.J. Lawrence/Deutsche Bank Securities Corporation.............................         40,000
WR Lazard, Laidlaw & Mead Incorporated.........................................         40,000
Luther, Smith & Small Inc......................................................         40,000
Needham & Company, Inc.........................................................         40,000
The Ohio Company...............................................................         40,000
Parker/Hunter Incorporated.....................................................         40,000
Pennsylvania Merchant Group Ltd................................................         40,000
The Principal/Eppler, Guerin & Turner, Inc.....................................         40,000
Ragen Mackenzie Incorporated...................................................         40,000
Samuel A. Ramirez & Co. Inc....................................................         40,000
Rauscher Pierce Refsnes, Inc...................................................         40,000
Rodman & Renshaw, Inc..........................................................         40,000
Southcoast Capital Corporation.................................................         40,000
Stifel, Nicolaus & Company, Incorporated.......................................         40,000
Wedbush Morgan Securities......................................................         40,000
                                                                                 -------------
  Total........................................................................     10,625,000
                                                                                 -------------
                                                                                 -------------
</TABLE>

   
    In the  U.S.  Underwriting Agreement,  the  several U.S.  Underwriters  have
agreed,  subject to the terms and conditions  set forth therein, to purchase all
10,625,000 shares of  Common Stock offered  hereby in the  U.S. Offering  (other
than  the shares of Common Stock covered by the over-allotment options described
below) if any such shares are purchased. In  the event of a default by any  U.S.
Underwriter,   the  U.S.  Underwriting  Agreement   provides  that,  in  certain
circumstances, purchase commitments of  the nondefaulting U.S. Underwriters  may
be  increased  or  the  U.S.  Underwriting  Agreement  may  be  terminated.  The
Corporation has been advised by the  U.S. Representatives that the several  U.S.
Underwriters propose initially to offer such shares at the public offering price
set  forth on the cover page of this  Prospectus, and to certain dealers at such
price, less a concession not in excess of $0.80 per share. The U.S. Underwriters
may allow, and such dealers may reallow, a concession not in excess of $0.10 per
share to other dealers.  After this public offering,  the public offering  price
and such concessions may be changed.
    

   
    The   Corporation  and  the   Selling  Stockholder  have   entered  into  an
International Underwriting Agreement with  the International Underwriters  named
therein   (the  "International   Underwriters,"  and  together   with  the  U.S.
Underwriters, the  "Underwriters"),  for  whom  Salomon  Brothers  International
Limited,  Lazard Brothers  & Co.,  Limited and  Smith Barney  Shearson Inc., are
acting as representatives (the  "International Representatives"), providing  for
the concurrent offer and sale of 1,875,000 shares of Common Stock outside of the
United  States  and  Canada.  Both  the  U.S.  Underwriting  Agreement  and  the
International Underwriting Agreement  provide that the  obligations of the  U.S.
Underwriters  and the  International Underwriters  are such  that if  any of the
shares of Common Stock  are purchased by the  U.S. Underwriters pursuant to  the
U.S. Underwriting Agreement or by the International Underwriters pursuant to the
International  Underwriting Agreement, all the shares  of Common Stock agreed to
be purchased by either the U.S. Underwriters or the International  Underwriters,
as  the  case  may  be,  pursuant to  their  respective  agreements  must  be so
purchased.  The   initial  offering   price  and   underwriting  discounts   for
    

                                       95
<PAGE>
the  U.S. Offering and the International Offering will be identical. The closing
of the  U.S. Offering  is  conditioned upon  the  closing of  the  International
Offering,  and the closing of the International Offering is conditioned upon the
closing of the U.S. Offering.

   
    Each U.S. Underwriter has severally agreed that, as part of the distribution
of the 10,625,000 shares of Common  Stock offered by the U.S. Underwriters,  (i)
it  is not purchasing any shares of Common Stock for the account of anyone other
than a United States or Canadian Person and (ii) it has not offered or sold, and
will not offer or sell,  directly or indirectly, any  shares of Common Stock  or
distribute  this Prospectus to any person outside the United States or Canada or
to anyone other  than a  United States  or Canadian  Person. Each  International
Underwriter  has  severally agreed  that,  as part  of  the distribution  of the
1,875,000 shares of Common  Stock by the International  Underwriters, (i) it  is
not  purchasing any shares of Common Stock  for the account of any United States
or Canadian Person and (ii)  it has not offered or  sold, and will not offer  or
sell,  directly  or indirectly,  any shares  of Common  Stock or  distribute any
Prospectus relating  to the  International  Offering to  any person  within  the
United  States  or  Canada or  to  any  United States  or  Canadian  Person. The
foregoing limitations do not apply  to stabilization transactions or to  certain
other  transactions  specified in  the Agreement  between U.S.  Underwriters and
International Underwriters. "United States or Canadian Person" means any  person
who  is a national or resident of  the United States or Canada, any corporation,
partnership or other entity  created or organized  in or under  the laws of  the
United  States or  Canada, or any  political subdivision thereof,  any estate or
trust the income of which is subject to United States or Canadian federal income
taxation, regardless of the source of its income (other than a foreign branch of
any United  States  or Canadian  Person),  and  includes any  United  States  or
Canadian branch of a person other than a United States or Canadian Person.
    

    Any  offer of the  Common Stock in Canada  will be made  only pursuant to an
exemption from  the prospectus  requirements in  any jurisdiction  in Canada  in
which such offer is made.

   
    The  Corporation and the  Selling Stockholder have each  granted to the U.S.
Underwriters options, exercisable  during the  30-day period after  the date  of
this  Prospectus, to  purchase up  to 765,000  and 828,750  additional shares of
Common Stock,  respectively.  Additionally,  the  Corporation  and  the  Selling
Stockholder  have  each  granted  to  the  International  Underwriters  options,
exercisable during  the 30-day  period after  the date  of this  Prospectus,  to
purchase   up  to  135,000  and  146,250  additional  shares  of  Common  Stock,
respectively. Both such options are exercisable at the price to public set forth
on  the  cover  page  of  this  Prospectus,  less  underwriting  discount.   The
Underwriters  may exercise such  options only to  cover over-allotments, if any,
made in connection with the Offering. Either or both options may be exercised at
any time up to 30 days after the date of this Prospectus. To the extent that the
Underwriters  exercise  such  options,  each   Underwriter  will  have  a   firm
commitment, subject to certain conditions, to purchase a number of option shares
proportionate to such Underwriter's initial commitment.
    

    Pursuant  to  the  Agreement  between  U.S.  Underwriters  and International
Underwriters,  sales  may  be  made  between  the  U.S.  Underwriters  and   the
International  Underwriters of such number  of shares of Common  Stock as may be
mutually agreed. The price of  any shares of Common Stock  so sold shall be  the
initial public offering price, less an amount not greater than the concession to
securities  dealers.  To  the  extent  that there  are  sales  between  the U.S.
Underwriters and  the  International  Underwriters  pursuant  to  the  Agreement
between  U.S. Underwriters and International  Underwriters, the number of shares
initially available for sale  by the U.S. Underwriters  or by the  International
Underwriters  may be more or less than the amount appearing on the cover page of
this Prospectus.

    The  U.S.  and  International  Underwriting  Agreements  provide  that   the
Corporation  and  the  Selling  Stockholder  will  indemnify  the  several  U.S.
Underwriters  and  International   Underwriters  against  certain   liabilities,
including  liabilities under the  Securities Act, or  contribute to payments the
U.S. Underwriters and the International Underwriters may be required to make  in
respect thereof.

   
    The Corporation has agreed not to sell, or otherwise dispose of, or announce
the offering of, any shares of Common Stock, or any securities convertible into,
or  exchangeable for,  or exercisable into,  shares of Common  Stock, except the
shares  of  Common  Stock  offered  in  the  Offering,  for  a  period  of   120
    

                                       96
<PAGE>
days  from  the  date hereof  without  the  prior written  consent  of  the U.S.
Representatives and the  International Representatives;  provided, however,  the
Corporation  may issue and sell Common  Stock (or options exercisable for Common
Stock) pursuant to any  employee or non-employee director  stock option plan  or
stock  ownership plan of  the Corporation in  effect on the  date hereof and the
Corporation may  issue  Common Stock  or  any securities  convertible  into,  or
exchangeable  for, or  exercisable into shares  of Common Stock  pursuant to the
terms of any  securities outstanding  on the  date hereof  or other  obligations
binding upon the Corporation and in effect on the date hereof.

    The  Selling Stockholder has agreed not to sell, or otherwise dispose of, or
announce the  offering  of,  any  shares of  Common  Stock,  or  any  securities
convertible  into, or  exchangeable for, or  exercisable into,  shares of Common
Stock, for a period of 120 days from the date hereof, without the prior  written
consent  of  the  U.S. Representatives  and  the  International Representatives,
except for the shares of Common Stock offered in the Offering and except that at
any time after 90 days  after the date hereof,  Water Street may distribute  any
such  shares and securities to the partners in Water Street. In the event of any
such distribution by  Water Street, the  partners (other than  Goldman, Sachs  &
Co.)  would not be subject to the  restriction on selling shares of Common Stock
during the remainder of the 120-day  period. The partners in Water Street  shall
not  request a demand registration of such  shares or securities for a period of
120 days from  the date hereof  without the  prior written consent  of the  U.S.
Representatives    and   the   International   Representatives.   See   "Certain
Relationships and Related Transactions -- Agreement with Water Street Entities."

    From April 1991  to May 1993,  Salomon Brothers Inc  ("Salomon") and  Lazard
Freres & Co.
("Lazard")  advised  the  Corporation  in connection  with  the  development and
implementation of the Restructuring for  which they received customary fees  and
reimbursement  of expenses. Salomon  has also provided  other financial advisory
and investment banking services to the Corporation from time to time  including,
during  the past two years,  with respect to the  divestiture of DAP and certain
business strategy issues for which it received customary fees and  reimbursement
of  expenses. In addition, Smith Barney Shearson Inc. acted as financial advisor
to certain holders  of the Company's  subordinated debt in  connection with  the
Restructuring and received customary fees and reimbursement of expenses.

                                 LEGAL MATTERS

    The  validity of the  shares of Common  Stock offered hereby  will be passed
upon for the Corporation by Kirkland  & Ellis, Chicago, Illinois. Certain  legal
matters  will be passed upon  for the Underwriters by  Wachtell, Lipton, Rosen &
Katz, New York, New York.

                                       97
<PAGE>
                                    EXPERTS

    The financial  statements  and schedules  included  in this  Prospectus  and
elsewhere  in the registration statement have  been audited by Arthur Andersen &
Co., independent public accountants, as indicated in their reports with  respect
thereto,  and are included herein in reliance upon the authority of said firm as
experts in giving said reports. Reference is made to said reports, which (1) for
the Restructured Company, includes an explanatory paragraph with respect to  the
asbestos   litigation  as  discussed  in   Notes  to  the  Financial  Statements
- --"Litigation"  note;  and  (2)  for   the  Predecessor  Company,  includes   an
explanatory  paragraph with respect  to the asbestos  litigation as discussed in
Notes to  the  Financial Statements  --  "Litigation" note  and  an  explanatory
paragraph  with respect  to the  changes in the  methods of  accounting for post
retirement benefits  other than  pensions  and accounting  for income  taxes  as
discussed  in Notes to Financial Statements  -- "Cumulative Effect of Changes in
Accounting Principles" note.

                             ADDITIONAL INFORMATION

    The Corporation has filed with  the Securities and Exchange Commission  (the
"Commission"   or  the  "SEC")  a  Registration   Statement  on  Form  S-1  (the
"Registration Statement") (which term  shall encompass all amendments,  exhibits
and  schedules  thereto)  under the  Securities  Act  of 1933,  as  amended (the
"Securities Act"), with respect to the  Common Stock being offered hereby.  This
Prospectus  does not contain  all the information set  forth in the Registration
Statement, certain parts of which are  omitted in accordance with the rules  and
regulations  of  the Commission,  and to  which reference  is hereby  made. Such
additional information  can be  inspected  and copied  at the  public  reference
facilities maintained by the Commission at Room 1024, Judiciary Plaza, 450 Fifth
Street,  N.W., Washington, D.C.  20549 and at the  following regional offices of
the Commission: 500 W. Madison Street, Suite 1400, Chicago, Illinois 60661;  and
Seven  World Trade Center, New York, New York 10048. Copies of such material can
be obtained  by mail  from the  public reference  section of  the Commission  at
Judiciary  Plaza, 450 Fifth  Street, N.W., Washington,  D.C. 20549 at prescribed
rates. Statements made in  this Prospectus as to  the contents of any  contract,
agreement  or  other document  referred to  are  not necessarily  complete. With
respect to each such contract, agreement  or other document filed as an  exhibit
to  the Registration  Statement, reference  is made  to the  exhibit for  a more
complete description of the  matter involved, and each  such statement shall  be
deemed qualified in its entirety by such reference.

    The  Corporation  is  subject  to  the  informational  requirements  of  the
Securities Exchange  Act  of 1934,  as  amended  (the "Exchange  Act"),  and  in
accordance  therewith,  files periodic  reports and  other information  with the
Commission. Such reports  and other  information filed with  the Commission,  as
well  as the Registration Statement,  can be inspected and  copied at the public
reference facilities of the  Commission at 450  Fifth Street, N.W.,  Washington,
D.C.  20549, and  at the Commission's  regional offices  located at Northwestern
Atrium  Center,  500  West  Madison   Street,  Suite  1400,  Chicago,   Illinois
60661-2511,  and Seven World Trade  Center, New York, New  York 10048. Copies of
such material can also be obtained by mail from the Public Reference Section  of
the  Commission at 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed
rates. Such reports and  other information with respect  to the Corporation  are
available for inspection at the offices of the New York Stock Exchange, Inc., 20
Broad Street, New York, New York 10005 and the Chicago Stock Exchange, Inc., One
Financial Place, 440 South LaSalle Street, Chicago, Illinois 60605.

                                       98
<PAGE>
                                USG CORPORATION
                            ------------------------

                         INDEX TO FINANCIAL STATEMENTS

    On  May  6,  1993,  the  Corporation  completed  the  Restructuring  through
implementation  of  the  Prepackaged  Plan   as  described  elsewhere  in   this
Prospectus.  See "Prospectus Summary" and  "The Restructuring." The consolidated
financial statements, notes to financial statements and supplementary  financial
data  for the period of May 7 through  December 31, 1993, presented on pages F-1
through F-36, report the financial results for the restructured USG Corporation.
As a result of the Restructuring  and implementation of fresh start  accounting,
these  restructured  company financial  results  are not  comparable  to results
reported in the periods prior to May 7, 1993 for the predecessor USG Corporation
which  are  presented  separately  on  pages  F-37  through  F-80.  Because  the
Restructuring  was implemented on May 6, 1993, the Restructuring transaction and
accounting  adjustments  associated  with  the  implementation  of  fresh  start
accounting  are  reflected  in  the  results  of  the  predecessor  company. All
historical financial information presented on  pages F-1 through F-82 should  be
read  in  conjunction with  the information  included  in this  Prospectus under
"Capitalization," "Pro Forma Condensed  Consolidated Financial Statements,"  and
"Management's  Discussion  and Analysis  of Financial  Condition and  Results of
Operations."

<TABLE>
<CAPTION>
                                                                                                     PAGE
                                                                                                   ---------
<S>                                                                                                <C>
RESTRUCTURED COMPANY:
  Consolidated Statement of Earnings -- May 7 through December 31, 1993..........................        F-1
  Consolidated Balance Sheet -- as of December 31, 1993..........................................        F-2
  Consolidated Statement of Cash Flows -- May 7 through December 31, 1993........................        F-3
  Notes to Financial Statements..................................................................        F-4
  Report of Independent Public Accountants.......................................................       F-29
  Schedule  V -- Property, Plant and Equipment...................................................       F-30
  Schedule  VI -- Accumulated Depreciation and Depletion of Property, Plant and Equipment........       F-31
  Schedule VIII -- Valuation and Qualifying Accounts.............................................       F-32
  Schedule  IX -- Short-Term Borrowings..........................................................       F-33
  Schedule  X -- Supplemental Statement of Earnings Information..................................       F-34
  Supplemental Note on Financial Information for United States Gypsum Company....................       F-35
  Report of Independent Public Accountants with Respect to Supplemental Note and Financial
   Statement Schedules...........................................................................       F-36
PREDECESSOR COMPANY:
  Consolidated Statement of Earnings -- January 1 through May 6, 1993 and the years ended
   December 31, 1992 and 1991....................................................................       F-37
  Consolidated Balance Sheet -- as of May 6, 1993 and December 31, 1992..........................       F-38
  Consolidated Statement of Cash Flows -- January 1 through May 6, 1993 and the years ended
   December 31, 1992 and 1991....................................................................       F-39
  Notes to Financial Statements..................................................................       F-40
  Report of Independent Public Accountants.......................................................       F-73
  Schedule  V -- Property, Plant and Equipment...................................................       F-74
  Schedule  VI -- Accumulated Depreciation and Depletion of Property, Plant and Equipment........       F-75
  Schedule VIII -- Valuation and Qualifying Accounts.............................................       F-76
  Schedule  IX -- Short-Term Borrowings..........................................................       F-77
  Schedule  X -- Supplemental Statement of Earnings Information..................................       F-78
  Supplemental Note on Financial Information for United States Gypsum Company                           F-79
  Report of Independent Public Accountants with Respect to Supplemental Note and Financial
   Statement Schedules...........................................................................       F-80
SELECTED QUARTERLY FINANCIAL DATA................................................................       F-81
COMPARATIVE FIVE-YEAR SUMMARY....................................................................       F-82
</TABLE>

    All other schedules have been omitted  because they are not applicable,  are
not  required, or  the information  is included  in the  financial statements or
notes thereto.

                                       99
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                       CONSOLIDATED STATEMENT OF EARNINGS
                  (DOLLARS IN MILLIONS EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                                        MAY 7
                                                                                                       THROUGH
                                                                                                     DECEMBER 31,
                                                                                                         1993
                                                                                                    --------------
<S>                                                                                                 <C>
Net Sales.........................................................................................    $    1,325
Cost of products sold.............................................................................         1,062
                                                                                                         -------
Gross Profit......................................................................................           263
Selling and administrative expenses...............................................................           149
Amortization of Excess Reorganization Value.......................................................           113
                                                                                                         -------
Operating Profit..................................................................................             1
Interest expense..................................................................................            92
Interest income...................................................................................            (4)
Other income, net.................................................................................            (8)
                                                                                                         -------
Loss Before Taxes on Income and Extraordinary Loss................................................           (79)
Taxes on income...................................................................................            29
                                                                                                         -------
Loss Before Extraordinary Loss....................................................................          (108)
Extraordinary loss, net of taxes..................................................................           (21)
                                                                                                         -------
Net Loss..........................................................................................          (129)
                                                                                                         -------
                                                                                                         -------
Loss Per Common Share:
  Before extraordinary loss.......................................................................  $      (2.90  )
  Extraordinary loss..............................................................................         (0.56  )
                                                                                                         -------
Net Loss Per Common Share.........................................................................         (3.46  )
                                                                                                         -------
                                                                                                         -------
</TABLE>

THE NOTES TO FINANCIAL STATEMENTS ON PAGES F-4 THROUGH F-27 ARE AN INTEGRAL PART
OF THIS STATEMENT.

                                      F-1
<PAGE>
                                USG CORPORATION

                             (RESTRUCTURED COMPANY)
                           CONSOLIDATED BALANCE SHEET
                             (DOLLARS IN MILLIONS)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                                                        AS OF
                                                                                                     DECEMBER 31,
                                                                                                         1993
                                                                                                    --------------
<S>                                                                                                 <C>
Current Assets:
Cash and cash equivalents (primarily time deposits)...............................................    $      211
Receivables (net of reserves of $13)..............................................................           264
Inventories.......................................................................................           145
                                                                                                         -------
    Total current assets..........................................................................           620
                                                                                                         -------
Property, Plant and Equipment, Net................................................................           754
Excess Reorganization Value (net of accumulated amortization of $113).............................           735
Other Assets......................................................................................            54
                                                                                                         -------
    Total assets..................................................................................         2,163
                                                                                                         -------
                                                                                                         -------
                                       LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
Accounts payable..................................................................................    $      104
Accrued expenses..................................................................................           208
Notes payable.....................................................................................             2
Long-term debt maturing within one year...........................................................           165
Taxes on income...................................................................................            20
                                                                                                         -------
    Total current liabilities.....................................................................           499
                                                                                                         -------
Long-Term Debt....................................................................................         1,309
Deferred Income Taxes.............................................................................           180
Other Liabilities.................................................................................           309
Stockholders' Equity/(Deficit):
Preferred stock -- $1 par value; authorized 36,000,000 shares;
                 $1.80 convertible preferred stock (initial series);
                 outstanding -- none..............................................................            --
Common stock -- $0.10 par value; authorized 200,000,000 shares;
                 outstanding 37,158,085 (after deducting
                 27,876 shares held in treasury)..................................................             4
Capital received in excess of par value...........................................................            --
Deferred currency translation.....................................................................            (9)
Reinvested earnings/(deficit).....................................................................          (129)
                                                                                                         -------
    Total stockholders' equity/(deficit)..........................................................          (134)
                                                                                                         -------
    Total liabilities and stockholders' equity....................................................         2,163
                                                                                                         -------
                                                                                                         -------
</TABLE>

THE NOTES TO FINANCIAL STATEMENTS ON PAGES F-4 THROUGH F-27 ARE AN INTEGRAL PART
OF THIS STATEMENT.

                                      F-2
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                      CONSOLIDATED STATEMENT OF CASH FLOWS
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                                                         MAY 7
                                                                                                        THROUGH
                                                                                                     DECEMBER 31,
                                                                                                         1993
                                                                                                    ---------------
<S>                                                                                                 <C>
Cash Flows from Operating Activities:
Net loss..........................................................................................     $    (129)
Adjustments to reconcile net loss to net cash:
  Amortization of Excess Reorganization Value.....................................................           113
  Extraordinary loss..............................................................................            21
  Depreciation, depletion and amortization........................................................            44
  Postretirement expense..........................................................................             7
  Deferred income taxes...........................................................................            22
  Net gain on asset dispositions..................................................................            (9)
Decrease in working capital:
  Receivables.....................................................................................            51
  Inventories.....................................................................................             4
  Payables........................................................................................            14
  Accrued expenses................................................................................            37
Decrease in other assets..........................................................................             7
Increase in other liabilities.....................................................................             5
Other, net........................................................................................            (4)
                                                                                                          ------
    Net cash flows from operating activities......................................................           183
                                                                                                          ------
Cash Flows from Investing Activities:
Capital expenditures..............................................................................           (29)
Net proceeds from asset dispositions..............................................................            29
                                                                                                          ------
  Net cash flows from investing activities........................................................            --
                                                                                                          ------
Cash Flows from Financing Activities:
Issuance of debt..................................................................................            36
Repayment of debt.................................................................................           (57)
                                                                                                          ------
    Net cash flows to financing activities........................................................           (21)
                                                                                                          ------
Net Increase in Cash and Cash Equivalents.........................................................           162
                                                                                                          ------
Cash and cash equivalents as of beginning of period...............................................            49
                                                                                                          ------
Cash and cash equivalents as of end of period.....................................................           211
                                                                                                          ------
                                                                                                          ------
Supplemental Cash Flow Disclosures:
Interest paid                                                                                          $      73
Income taxes paid.................................................................................             5
                                                                                                          ------
                                                                                                          ------
</TABLE>

THE NOTES TO FINANCIAL STATEMENTS ON PAGES F-4 THROUGH F-27 ARE AN INTEGRAL PART
OF THIS STATEMENT.

                                      F-3
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                         NOTES TO FINANCIAL STATEMENTS
  (TERMS IN INITIAL CAPITAL LETTERS ARE DEFINED ELSEWHERE IN THIS PROSPECTUS)

PRINCIPLES OF CONSOLIDATION

    The   consolidated  financial   statements  include  the   accounts  of  the
Corporation and its subsidiaries after elimination of intercompany accounts  and
transactions.  Revenue is recognized upon the shipment of products. Net currency
translation gains or  losses on  foreign subsidiaries are  included in  deferred
currency translation, a component of stockholders' equity.

    Excess  Reorganization  Value,  which  was  recorded  as  a  result  of  the
implementation of fresh start accounting, is being amortized through April 1998.
The Corporation  continues to  evaluate whether  events and  circumstances  have
occurred   that  indicate  the   remaining  estimated  useful   life  of  Excess
Reorganization Value may warrant revision or that the remaining balances may not
be recoverable. The Corporation uses an estimate of its undiscounted cash  flows
over  the remaining life of the Excess Reorganization Value in measuring whether
the asset  is recoverable.  See "Financial  Restructuring" note  below for  more
information on the implementation of fresh start accounting.

    For purposes of the Consolidated Balance Sheet and Consolidated Statement of
Cash  Flows, all highly  liquid investments with  a maturity of  three months or
less at the time of purchase are considered to be cash equivalents.

FINANCIAL RESTRUCTURING

    On May 6, 1993, the  Corporation completed a comprehensive restructuring  of
its debt (the "Restructuring") through implementation of a "prepackaged" plan of
reorganization  under federal bankruptcy laws (the "Prepackaged Plan") which was
confirmed on April 23, 1993 by  the Bankruptcy Court. In the Restructuring,  the
Corporation  (i) converted approximately  $1.4 billion of  subordinated debt and
accrued interest into Common Stock and  warrants to purchase Common Stock,  (ii)
converted approximately $340 million of its bank obligations into 10 1/4% Senior
Notes  due 2002 ("Senior 2002  Notes") and (iii) extended  the maturities of its
remaining  Bank  Debt  and  certain  public  debt.  Upon  consummation  of   the
Restructuring,  all  previously existing  defaults  upon senior  securities were
waived or cured. None of the subsidiaries  of the Corporation were part of  this
proceeding  and  there was  no impact  on trade  creditors of  the Corporation's
subsidiaries.  The  Corporation  accounted  for  the  Restructuring  using   the
principles  of fresh start accounting as required by AICPA Statement of Position
90-7, "Financial Reporting  by Entities in  Reorganization under the  Bankruptcy
Code"   ("SOP  90-7").  Pursuant  to  such  principles,  individual  assets  and
liabilities were  adjusted  to  fair  market  value  as  of  May  6,  1993.  See
"Predecessor Company -- Notes to Financial Statements -- Financial Restructuring
and   Fresh  Start   Accounting"  notes  for   information  on   the  terms  and
implementation of the Prepackaged Plan and fresh start accounting.

PRO FORMA CONSOLIDATED STATEMENT OF EARNINGS

    The following  unaudited  Pro  Forma  Condensed  Consolidated  Statement  of
Earnings for the year ended December 31, 1993 has been prepared giving effect to
the  consummation of  the Restructuring,  including the  implementation of fresh
start accounting, as if the consummation had occurred on January 1, 1993. Due to
the Restructuring  and  implementation  of  fresh  start  accounting,  financial
statements effective May 7, 1993 for the restructured company are not comparable
to financial statements prior to that date for the predecessor company. However,
for  presentation of this statement, total results  for 1993 are shown under the
caption "Total Before Adjustments." The adjustments set forth under the  caption
"Pro  Forma Adjustments" reflect the implementation  of the Prepackaged Plan and
the adoption of fresh  start accounting as  if they had  occurred on January  1,
1993.

                                      F-4
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                                USG CORPORATION
             PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1993
                                  (UNAUDITED)
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                              TOTAL
                                                                             BEFORE        PRO FORMA
                                                                           ADJUSTMENTS    ADJUSTMENTS    PRO FORMA
                                                                          -------------  -------------  -----------
<S>                                                                       <C>            <C>            <C>
Net sales...............................................................    $   1,916      $             $   1,916
Cost of products sold...................................................        1,544                        1,544
                                                                          -------------       ------    -----------
Gross profit............................................................          372                          372
Selling and administrative expense......................................          220                          220
Amortization of Excess Reorganization Value.............................          113             57(a)        170
                                                                          -------------       ------    -----------
Operating profit/(loss).................................................           39            (57)          (18)
Interest expense........................................................          178            (42)(b)        136
Interest income.........................................................           (6)                          (6)
Other (income)/expense, net.............................................           (2)            (1)(c)         (3)
Reorganization items....................................................         (709)           709(d)         --
                                                                          -------------       ------    -----------
Earnings/(loss) before taxes on income, extraordinary gain and changes
 in accounting principles...............................................          578           (723)         (145)
Taxes on income.........................................................           46            (16)           30
                                                                          -------------       ------    -----------
Earnings/(loss) before extraordinary gain and changes in accounting
 principles.............................................................          532           (707)         (175)
                                                                          -------------       ------    -----------
                                                                          -------------       ------    -----------
<FN>
- ------------------------
(a)   Reflects amortization of Excess Reorganization Value which would have been
      recorded during the period of January 1 through May 6, 1993.
(b)   Reflects  the adjustment  to restate  interest expense  for the  period of
      January 1 through May 6, 1993 to the amount that would have been recorded.
(c)   Represents the reversal of first  quarter 1993 amortization of  historical
      capitalized  financing costs which were written off in connection with the
      Restructuring.
(d)   Represents  the  reversal  of  actual  reorganization  items  incurred  in
      connection  with  the  Restructuring  and  implementation  of  fresh start
      accounting.  This  gain  would  have   been  recorded  in  1992  had   the
      Restructuring occurred on January 1, 1993.
</TABLE>

EXTRAORDINARY LOSS

    In  December 1993,  the Corporation  recorded an  extraordinary loss  of $21
million, net  of related  income  tax benefit  of  $11 million,  reflecting  the
write-off of the reorganization discount associated with debt issues expected to
be  prepaid, redeemed or purchased in  1994 in connection with the Corporation's
planned public offering of  common stock and issuance  of new senior notes.  See
"Subsequent  Event" note for more information  on the planned public offering of
stock and issuance of new senior notes.

RESEARCH AND DEVELOPMENT

    Research and development  expenditures are charged  to earnings as  incurred
and amounted to $10 million in the period of May 7 through December 31, 1993.

                                      F-5
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

TAXES ON INCOME AND DEFERRED INCOME TAXES

    Loss  before  taxes  on  income  and  extraordinary  loss  consisted  of the
following (dollars in millions):

<TABLE>
<CAPTION>
                                                                                               May 7
                                                                                              through
                                                                                           December 31,
                                                                                               1993
                                                                                          ---------------
<S>                                                                                       <C>
U.S.....................................................................................     $     (72)
Foreign.................................................................................            (7)
                                                                                                 -----
Total...................................................................................           (79)
                                                                                                 -----
                                                                                                 -----
</TABLE>

    Taxes on income consisted of the following (dollars in millions):

<TABLE>
<CAPTION>
                                                                                                May 7
                                                                                               through
                                                                                            December 31,
                                                                                                1993
                                                                                          -----------------
<S>                                                                                       <C>
Current:
  U.S. Federal..........................................................................      $      12
  Foreign...............................................................................              5
  State.................................................................................              1
                                                                                                    ---
                                                                                                     18
                                                                                                    ---
Deferred:
  U.S. Federal..........................................................................             11
  Foreign...............................................................................             --
  State.................................................................................             --
                                                                                                    ---
                                                                                                     11
                                                                                                    ---
Total...................................................................................             29
                                                                                                    ---
                                                                                                    ---
</TABLE>

    The difference between the statutory U.S. Federal income tax/(benefit)  rate
and the Corporation's effective income tax rate is summarized as follows:

<TABLE>
<CAPTION>
                                                                                               MAY 7
                                                                                              THROUGH
                                                                                           DECEMBER 31,
                                                                                               1993
                                                                                          ---------------
<S>                                                                                       <C>
Statutory U.S. Federal income tax/(benefit) rate........................................         (35.0)%
Excess Reorganization Value amortization................................................          49.6
Foreign tax rate differential...........................................................          11.4
Statutory rate adjustment to historical deferred taxes..................................           4.0
Valuation allowance adjustment..........................................................           3.3
Other, net..............................................................................           3.4
                                                                                               -----
Effective income tax rate...............................................................          36.7
                                                                                               -----
                                                                                               -----
</TABLE>

                                      F-6
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    Temporary  differences  and carryforwards  which  give rise  to  current and
long-term deferred  tax (assets)/liabilities  as of  December 31,  1993 were  as
follows (dollars in millions):

<TABLE>
<CAPTION>
                                                                                               As of
                                                                                           December 31,
                                                                                               1993
                                                                                          ---------------
<S>                                                                                       <C>
Property, plant and equipment...........................................................     $     164
Debt discount...........................................................................            19
                                                                                                ------
Deferred tax liabilities................................................................           183
                                                                                                ------
Pension and retiree medical benefits....................................................           (90)
Reserves not deductible until paid......................................................           (61)
Other...................................................................................            (8)
                                                                                                ------
Deferred tax assets before valuation allowance..........................................          (159)
Valuation allowance.....................................................................            90
                                                                                                ------
Deferred tax assets.....................................................................           (69)
                                                                                                ------
Net deferred tax liabilities............................................................           114
                                                                                                ------
                                                                                                ------
</TABLE>

    A  valuation allowance has been provided for deferred tax assets relating to
pension and  retiree medical  benefits  due to  the  long-term nature  of  their
realization.  Because  of  the  uncertainty  regarding  the  application  of the
Internal Revenue Code (the "Code") to  the Corporation's NOL Carryforwards as  a
result  of the Prepackaged Plan, no deferred  tax asset is recorded. Under fresh
start accounting rules, any benefit realized from utilizing predecessor  company
NOL Carryforwards will not impact net earnings.

    The  Corporation has  NOL Carryforwards of  $90 million  remaining from 1992
after using approximately $23 million to offset U.S. taxable income in 1993  and
a reduction due to cancellation of indebtedness from the Prepackaged Plan. These
NOL  Carryforwards may be used  to offset U.S. taxable  income through 2007. The
Code will limit  the Corporation's annual  use of its  NOL Carryforwards to  the
lesser  of its taxable income or approximately $30 million plus any unused limit
from prior years. Furthermore, due to the uncertainty regarding the  application
of  the  Code  to  the  exchange  of  stock  for  debt,  the  Corporation's  NOL
Carryforwards could be further reduced or  eliminated. The Corporation has a  $4
million  minimum  tax  credit which  may  be  used to  offset  U.S.  regular tax
liability in future years.

    The Corporation  does not  provide  for U.S.  Federal  income taxes  on  the
portion  of undistributed earnings of foreign subsidiaries which are intended to
be permanently reinvested. The cumulative amount of such undistributed  earnings
totaled   approximately  $79  million  as  of  December  31,  1993.  Any  future
repatriation of undistributed earnings would not, in the opinion of  management,
result in significant additional taxes.

INVENTORIES

    In accordance with the implementation of fresh start accounting, inventories
were  stated at fair market  value as of May 6,  1993. Most of the Corporation's
domestic inventories are valued under the last-in, first-out ("LIFO") method. As
of December 31, 1993, the LIFO values of these inventories were $103 million and
would have  been the  same if  they were  valued under  the first-in,  first-out
("FIFO") and

                                      F-7
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
average  production cost  methods. The remaining  inventories are  stated at the
lower of cost  or market,  under the FIFO  or average  production cost  methods.
Inventories  include  material,  labor and  applicable  factory  overhead costs.
Inventory classifications were as follows (dollars in millions):

<TABLE>
<CAPTION>
                                                                                               As of
                                                                                           December 31,
                                                                                               1993
                                                                                          ---------------
<S>                                                                                       <C>
Finished goods and work-in-process......................................................     $      84
Raw materials...........................................................................            53
Supplies................................................................................             8
                                                                                                 -----
Total...................................................................................           145
                                                                                                 -----
                                                                                                 -----
</TABLE>

    The LIFO value  of U.S.  domestic inventories under  fresh start  accounting
exceeded that computed for U.S. Federal income tax purposes by $25 million as of
December 31, 1993.

PROPERTY, PLANT AND EQUIPMENT

    Property,  plant and equipment were stated at fair market value as of May 6,
1993 in accordance with fresh start accounting. Provisions for depreciation  are
determined principally on a straight-line basis over the expected average useful
lives  of composite asset groups. Depletion is computed on a basis calculated to
spread the cost  of gypsum  and other  applicable resources  over the  estimated
quantities  of material recoverable. Interest during construction is capitalized
on major property additions. Property, plant and equipment classifications  were
as follows (dollars in millions):

<TABLE>
<CAPTION>
                                                                                               As of
                                                                                           December 31,
                                                                                               1993
                                                                                          ---------------
<S>                                                                                       <C>
Land and mineral deposits...............................................................     $      61
Buildings and realty improvements.......................................................           233
Machinery and equipment.................................................................           496
                                                                                                 -----
                                                                                                   790
Reserves for depreciation and depletion.................................................           (36)
                                                                                                 -----
Total...................................................................................           754
                                                                                                 -----
                                                                                                 -----
</TABLE>

LEASES

    The  Corporation  leases certain  of its  offices, buildings,  machinery and
equipment, and autos  under noncancellable operating  leases. These leases  have
various  terms and renewal options. Lease expense amounted to $22 million in the
period of May  7 through December  31, 1993. Future  minimum lease payments,  by
year  and in  the aggregate,  under operating  leases with  initial or remaining
noncancellable terms in  excess of  one year  as of  December 31,  1993 were  as
follows (dollars in millions):

<TABLE>
<CAPTION>
                                                                                                Minimum
                                                                                                 Lease
                                                                                               Payments
                                                                                              -----------
<S>                                                                                           <C>
1994........................................................................................   $      24
1995........................................................................................          21
1996........................................................................................          16
1997........................................................................................          12
1998........................................................................................          11
Thereafter..................................................................................          35
                                                                                                   -----
Aggregate minimum payments..................................................................         119
                                                                                                   -----
                                                                                                   -----
</TABLE>

                                      F-8
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

INDEBTEDNESS

    Total  debt, including currently  maturing debt, consisted  of the following
(dollars in millions):

<TABLE>
<CAPTION>
                                                                                              As of
                                                                                           December 31,
                                                                                               1993
                                                                                          --------------
<S>                                                                                       <C>
SECURED DEBT:
Bank Term Loan, installments due 1997 through 2000......................................    $      448
Senior notes and debentures:
  8% Senior Notes due 1995..............................................................            75
  8% Senior Notes due 1996..............................................................            90
  8% Senior Notes due 1997..............................................................           100
  9% Senior Notes due 1998..............................................................            35
  10 1/4% Senior Notes due 2002.........................................................           478
  7 7/8% Sinking Fund Debentures due 2004...............................................            36
  8 3/4% Sinking Fund Debentures due 2017...............................................           200
Other secured debt, average interest rate 8.0%, varying payments through 1999...........            31
UNSECURED DEBT:
Industrial revenue bonds, 5.9% ranging to 8.0%, due through 2014........................            38
                                                                                               -------
Total principal amount of debt..........................................................         1,531
Less unamortized reorganization discount................................................           (55)
                                                                                               -------
Total carrying amount of debt...........................................................         1,476
                                                                                               -------
                                                                                               -------
</TABLE>

    As of December  31, 1993, the  Corporation and its  subsidiaries had  $1,531
million  total  principal  amount  of  debt  (before  unamortized reorganization
discount) on a consolidated basis. Of such total debt, $105 million  represented
direct  borrowings  by the  subsidiaries,  including $38  million  of industrial
revenue bonds, $36  million of  7 7/8% sinking  fund debentures  issued by  U.S.
Gypsum  in  1974 and  subsequently assumed  by  the Corporation  on a  joint and
several basis  in  1985,  $27  million of  debt  (primarily  project  financing)
incurred by the Corporation's foreign subsidiaries other than CGC, $2 million of
working  capital borrowings by CGC, and $2 million of other long-term borrowings
by CGC.

    The Credit Agreement includes a cash sweep mechanism under which excess cash
as of the end of any year,  calculated in accordance with the Credit  Agreement,
must  be used to  pay debt within the  following year. As  of December 31, 1993,
such excess  cash  amounted  to  $158  million.  Accordingly,  $158  million  of
long-term debt was reclassified to currently maturing long-term debt.

    On August 10, 1993, the Corporation issued $138 million of Senior 2002 Notes
in  exchange for $92  million of Bank Term  Loans due 1994  through 1996 and $46
million of Capitalized Interest Notes due 2000. The Corporation did not  receive
any cash proceeds from the issuance of these securities. In connection with this
transaction,  the  Credit Agreement  was modified,  providing for  the following
changes: (i) scheduled Bank Term Loan  amortization payments of $95 million  due
in  1994,  1995 and  1996 were  eliminated ($3  million was  added to  the final
maturity of the Bank Term Loan due in 2000); (ii) USG Interiors paid $9  million
of  Capitalized Interest Notes due  in 1998; and (iii)  the cash sweep mechanism
was modified to permit the use of up to $165 million of cash, otherwise  subject
to  mandatory Bank Term Loan prepayments in  1994, 1995 and 1996, for payment or
purchase of senior debt  with maturities prior  to January 1,  1999, or for  the
prepayment of Bank Term Loans, at the discretion of the Corporation.

                                      F-9
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    The Bank Term Loan and most other senior debt are secured by a pledge of all
of  the shares of the  Corporation's major domestic subsidiaries  and 65% of the
shares of certain  of its  foreign subsidiaries,  including CGC,  pursuant to  a
collateral  trust arrangement controlled  primarily by holders  of the Bank Term
Loan. The rights  of the  Corporation and  its creditors  to the  assets of  any
subsidiary  upon the latter's  liquidation or reorganization  will be subject to
the prior claims of such subsidiary's  creditors, except to the extent that  the
Corporation  may  itself  be a  creditor  with enforceable  claims  against such
subsidiary. The average rate of interest on  the Bank Term Loan was 5.3% in  the
period of May 7 through December 31, 1993.

    The  "Other  Secured  Debt"  category shown  in  the  table  above primarily
includes short-term and long-term borrowings  from several foreign banks by  USG
International  used principally to finance  construction of the Aubange, Belgium
ceiling tile plant. This debt is secured by a lien on the assets of the  Aubange
plant  and  has restrictive  covenants that  restrict,  among other  things, the
payment of dividends. Foreign borrowings made by the Corporation's international
operations are generally allowed, within certain limits, under provisions of the
Credit Agreement.

    In  general,  the  Credit  Agreement  restricts,  among  other  things,  the
incurrence of additional indebtedness, mergers, asset dispositions, investments,
prepayment  of  other  debt,  dealings  with  affiliates,  capital expenditures,
payment of dividends and lease commitments. The Credit Agreement, as amended  in
accordance  with the Prepackaged Plan,  also requires the Corporation, beginning
January 1, 1995, to satisfy certain financial covenants.

    The fair market value of  debt as of December  31, 1993 was $1,481  million,
based  on indicative bond prices as of  that date, excluding other secured debt,
primarily representing financing  for construction of  the Aubange plant,  which
was not practicable to estimate.

    Aggregate,  presently  scheduled  maturities of  long-term  debt,  after the
assumed  effect  of  prepayments  pursuant  to  the  aforementioned  cash  sweep
mechanism  and excluding other amounts classified as current liabilities, are $9
million, $20 million, $148  million and $153 million  in the years 1995  through
1998, respectively.

PENSION PLANS

    The Corporation and most of its subsidiaries have defined benefit retirement
plans  for all eligible employees. Benefits of  the plans are generally based on
years  of  service  and  employees'  compensation  during  the  last  years   of
employment.   The  Corporation's  contributions  are  made  in  accordance  with
independent actuarial reports which, for most plans, required minimal funding in
the period of May 7 through December 31, 1993. Net pension expense included  the
following components (dollars in millions):

<TABLE>
<CAPTION>
                                                                                                May 7
                                                                                               through
                                                                                            December 31,
                                                                                                1993
                                                                                          -----------------
<S>                                                                                       <C>
Service cost-benefits earned during the period..........................................      $       7
Interest cost on projected benefit obligation...........................................             21
Actual return on plan assets............................................................            (37)
Net amortization/(deferral).............................................................             16
                                                                                                    ---
Net pension expense.....................................................................              7
                                                                                                    ---
                                                                                                    ---
</TABLE>

                                      F-10
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    The  pension plan assets, which consist  primarily of publicly traded common
stocks and debt securities,  had an estimated fair  market value that was  lower
than  the projected  benefit obligation as  of December 31,  1993. The following
table presents a reconciliation of the total assets of the pension plans to  the
projected benefit obligation (dollars in millions):

<TABLE>
<CAPTION>
                                                                                               As of
                                                                                           December 31,
                                                                                               1993
                                                                                          ---------------
<S>                                                                                       <C>
Amount of assets available for benefits:
  Funded assets of the plans at fair market value.......................................     $     400
  Accrued pension expense...............................................................            25
                                                                                                 -----
Total assets of the plans...............................................................           425
                                                                                                 -----
Present value of estimated pension obligation:
  Vested benefits.......................................................................           329
  Nonvested benefits....................................................................            27
                                                                                                 -----
Accumulated benefit obligation..........................................................           356
Additional benefits based on projected future salary increases..........................            85
                                                                                                 -----
Projected benefit obligation............................................................           441
                                                                                                 -----
Projected benefit obligation in excess of assets........................................           (16)
                                                                                                 -----
                                                                                                 -----
</TABLE>

    The  projected  benefit  obligation  in excess  of  assets  consisted  of an
unrecognized net  loss due  to changes  in assumptions  and differences  between
actual and estimated experience.

    The  expected long-term rate of return on  plan assets was 9% for the period
of May 7 through December 31,  1993. The assumed weighted average discount  rate
used  in determining the accumulated  benefit obligation was 7%  and the rate of
increases in projected future compensation levels was 5%.

                                      F-11
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

POSTRETIREMENT BENEFITS

    The  Corporation maintains plans  that provide retiree  health care and life
insurance benefits  for  all  eligible  employees.  Employees  generally  become
eligible for the retiree benefit plans when they meet minimum retirement age and
service  requirements. The  cost of providing  most of these  benefits is shared
with retirees.

    The following table summarizes the components of net periodic postretirement
benefit cost for  the period  of May  7 through  December 31,  1993 (dollars  in
millions):

<TABLE>
<CAPTION>
                                                                                                   MAY 7
                                                                                                  THROUGH
                                                                                               DECEMBER 31,
                                                                                                   1993
                                                                                              ---------------
<S>                                                                                           <C>
Service cost of benefits earned.............................................................     $       4
Interest on accumulated postretirement benefit obligation...................................             9
                                                                                                    ------
Net periodic postretirement benefit cost....................................................            13
                                                                                                    ------
                                                                                                    ------
</TABLE>

    The  status of the  Corporation's accrued postretirement  benefit cost as of
December 31, 1993 was as follows (dollars in millions):

<TABLE>
<CAPTION>
                                                                                                   AS OF
                                                                                               DECEMBER 31,
                                                                                                   1993
                                                                                              ---------------
<S>                                                                                           <C>
Accumulated postretirement benefit obligation:
  Retirees..................................................................................     $     123
  Fully eligible active participants........................................................            14
  Other active participants.................................................................            66
                                                                                                    ------
                                                                                                       203
Unrecognized net loss.......................................................................            (2)
                                                                                                    ------
Accrued postretirement benefit cost liability recognized on the Consolidated Balance
 Sheet......................................................................................           201
                                                                                                    ------
                                                                                                    ------
</TABLE>

    The assumed health care  cost trend rate used  in measuring the  accumulated
postretirement  benefit  obligation  was 11%  as  of  December 31,  1993  with a
gradually declining rate  to 5% by  the year  2000 and remaining  at that  level
thereafter.  A  one-percentage-point increase  in the  assumed health  care cost
trend rate for each year  would increase the accumulated postretirement  benefit
obligation  as of December 31, 1993 by $22 million and increase the net periodic
postretirement benefit cost for the period of May 7 through December 31, 1993 by
$2 million.  The  assumed discount  rate  used in  determining  the  accumulated
postretirement benefit obligation was 7%.

COMMITMENTS AND CONTINGENCIES

    The Corporation employs a variety of off-balance sheet financial instruments
to  reduce  its exposure  to fluctuations  in  interest rates,  foreign currency
exchange rates  and  energy  costs.  These  instruments  consists  primarily  of
interest  rate caps and  swaps, foreign currency  forward exchange contracts and
energy price swaps  and option agreements.  The Corporation designates  interest
rate  swaps as hedges of LIBOR-based bank  debt, and accrues as interest expense
the differential to  be paid or  received under the  agreements as rates  change
over  the life of the contracts. Gains  and losses arising from foreign currency
forward contracts offset gains and  losses resulting from the underlying  hedged
transactions.  Upon settlement of energy price  contracts, the resulting gain or
loss is included in related manufacturing

                                      F-12
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
cost. The Corporation continually  monitors its positions  with, and the  credit
quality   of,  the  financial  institutions  which  are  counterparties  to  its
off-balance sheet financial instruments and does not anticipate  non-performance
by the counterparties.

    As  of December  31, 1993,  the Corporation  had approximately  $500 million
(notional amount) of interest rate contracts outstanding, extending up to  three
years,  and  approximately $50  million  (combined notional  amount)  of foreign
currency and energy price contracts outstanding, extending one year or less. The
difference in the value of all of the aforementioned contracts and the  December
31, 1993 market value was not material.

MANAGEMENT PERFORMANCE PLAN

    On  May  6,  1993,  all outstanding  stock  options  were  cancelled without
consideration  and  certain  shares  of  restricted  and  deferred  stock   were
cashed-out   pursuant  to  "change  in  control"  provisions  contained  in  the
Management Performance Plan (the "Performance  Plan"). As of December 31,  1993,
restricted stock and awards for deferred stock yet to be issued (totaling 25,259
shares)  remained outstanding as a consequence  of certain waivers of the change
in control event by senior members of management.

    As permitted by the Prepackaged Plan, 2,788,350 common shares were  reserved
for  future issuance in conjunction with stock options, all of which remained in
reserve as of December 31,1993. Options for 1,673,000 common shares were granted
on June 1,  1993, leaving an  additional 1,115,350 common  shares available  for
future  grants. The options  granted on June  1, 1993 become  exercisable in the
years 1994 through 1996 at an exercise price of $10.3125 per share.

PREFERRED SHARE PURCHASE RIGHTS

    On June 6, 1988, the Corporation  adopted a Preferred Share Purchase  Rights
Plan and pursuant to its provisions declared, subject to the consummation of the
1988  Recapitalization, a distribution of one right (the "Rights") upon each new
share  of  common  stock   issued  in  the   1988  Recapitalization.  The   1988
Recapitalization  became effective July  13, 1988 and  the distribution occurred
immediately thereafter.  The Rights  contain provisions  which are  intended  to
protect  stockholders  in the  event of  an unsolicited  attempt to  acquire the
Corporation.

    The Preferred Share Purchase Rights  Plan was terminated in connection  with
implementation of the Prepackaged Plan. On May 6, 1993, the Rights Agreement was
adopted with provisions substantially similar to the old rights except that: (i)
the  purchase price of the  Rights was reset; (ii)  the expiration of the Rights
was extended;  (iii) a  so-called "flip-in"  feature and  exchange feature  were
added;  (iv) certain exemptions  were added permitting  certain acquisitions and
the continued holding  of common shares  by Water Street  and its affiliates  in
excess  of  the otherwise  specified thresholds;  (v)  the redemption  price was
reduced; and (vi) the amendment provision was liberalized.

    Under the terms of  the Rights Agreement and  subject to certain  exceptions
for Water Street and its affiliates, generally the Rights become exercisable (i)
10  days following the date  of a public announcement that  a person or group of
affiliated or  associated  persons  (an  "Acquiring  Person"),  other  than  the
Corporation,  any employee benefit  plan of the  Corporation, any entity holding
Common Stock for  or pursuant  to the  terms of  any such  plan, has  beneficial
ownership  (as  defined in  the Rights  Agreement) of  20% or  more of  the then
outstanding  Common  Stock,  (ii)  10  days  following  the  date  of  a  public
announcement  that a  person or  group of  affiliated or  associated persons (an
"Adverse  Person")  has  beneficial  ownership  of  10%  or  more  of  the  then
outstanding  Common Stock, the  acquisition of which has  been determined by the
Board to present  an actual  threat of an  acquisition of  the Corporation  that
would  not be in the best interest of the Corporation's stockholders or (iii) 10
days following the date of commencement of, or public announcement of, a  tender
offer or exchange offer for 30% or more of the

                                      F-13
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
Common  Stock.  When exercisable,  each of  the  Rights entitles  the registered
holder to purchase one-hundredth of a share of a junior participating  preferred
stock,  series  C,  $1.00  par  value  per  share,  at  a  price  of  $35.00 per
one-hundredth of a preferred share, subject to adjustment.

    In the event that the Corporation  is the surviving corporation in a  merger
or other business combination involving an Acquiring Person or an Adverse Person
and  the Common Stock remains outstanding and  unchanged or in the event that an
Acquiring Person or an Adverse Person engages in one of a number of self-dealing
transactions specified in the Rights Agreement, proper provision will be made so
that each holder of  a Right, other  than Rights that  are or were  beneficially
owned  (as  defined in  the Rights  Agreement)  by the  Acquiring Person  or the
Adverse Person, as the case  may be, on the  earliest of the Distribution  Date,
the  date the Acquiring  Person acquires 20%  or more of  the outstanding Common
Stock or the  date the  Adverse Person becomes  such (which  will thereafter  be
void),  will thereafter  have the  right to  receive upon  exercise thereof that
number of shares  of Common  Stock having  a market value  at the  time of  such
transaction  of two times  the exercise price  of the Right.  In addition, under
certain circumstances the Board has the option of exchanging all or part of  the
Rights  (excluding void Rights) for Common Stock  in the manner described in the
Rights Agreement.  The  Rights Agreement  also  contains a  so-called  "flip-in"
feature  which provides that if any person  or group of affiliated or associated
persons becomes an  Adverse Person,  then the  provisions of  the preceding  two
sentences shall apply.

WARRANTS

    On  May 6, 1993, a total of 2,602,566  warrants, each to purchase a share of
common stock at  an exercise price  of $16.14 per  share (the "Warrants"),  were
issued  to holders of the Old Junior  Subordinated Debentures in addition to the
shares of  common  stock  issued  to  such  holders,  all  as  provided  by  the
Prepackaged  Plan. Upon  issuance, each of  the Warrants entitled  the holder to
purchase one share  of common stock  at a  purchase price of  $16.14 per  share,
subject to adjustment under certain events.

    The  Warrants are exercisable, subject to applicable securities laws, at any
time prior to May 6, 1998. Each share of common stock issued upon exercise of  a
Warrant  prior to the Distribution Date (as defined in the Rights Agreement) and
prior to the redemption or  expiration of the Rights  will be accompanied by  an
attached  Right issued  under the  terms and  subject to  the conditions  of the
Rights Agreement as it may then be in effect. As of December 31, 1993, 2,601,619
Warrants were outstanding.

                                      F-14
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

STOCKHOLDERS' EQUITY

    Changes in  stockholders'  equity  are summarized  as  follows  (dollars  in
millions):

<TABLE>
<CAPTION>
                                                                                                   MAY 7
                                                                                                  THROUGH
                                                                                               DECEMBER 31,
                                                                                                   1993
                                                                                              ---------------
<S>                                                                                           <C>
COMMON STOCK:
Beginning Balance...........................................................................     $       4
                                                                                                    ------
Ending Balance..............................................................................             4
                                                                                                    ------
CAPITAL RECEIVED IN EXCESS OF PAR VALUE:
Beginning Balance...........................................................................            --
                                                                                                    ------
Ending Balance..............................................................................            --
                                                                                                    ------
DEFERRED CURRENCY TRANSLATION:
Beginning Balance...........................................................................            --
Change during the period....................................................................            (9)
                                                                                                    ------
Ending Balance..............................................................................            (9)
                                                                                                    ------
REINVESTED EARNINGS/(DEFICIT):
Beginning Balance...........................................................................            --
Net earnings/(loss).........................................................................          (129)
                                                                                                    ------
Ending Balance..............................................................................          (129)
                                                                                                    ------
Total stockholders' equity/(deficit)........................................................          (134)
                                                                                                    ------
                                                                                                    ------
</TABLE>

    As  of December 31, 1993, there were 27,876 shares of $0.10 par value common
stock held in treasury, which were acquired through the forfeiture of restricted
stock.

LITIGATION

    One of  the  Corporation's  subsidiaries, U.S.  Gypsum,  is  among  numerous
defendants   in  lawsuits   arising  out   of  the   manufacture  and   sale  of
asbestos-containing   building    materials.    U.S.   Gypsum    sold    certain
asbestos-containing products beginning in the 1930's; in most cases the products
were  discontinued or asbestos was removed from the product formula by 1972, and
no asbestos-containing products  were sold  after 1977. Some  of these  lawsuits
seek  to  recover compensatory  and  in many  cases  punitive damages  for costs
associated with maintenance  or removal and  replacement of products  containing
asbestos  (the "Property  Damage Cases"). Others  of these  suits (the "Personal
Injury Cases") seek to recover compensatory  and in many cases punitive  damages
for   personal  injury  allegedly  resulting   from  exposure  to  asbestos  and
asbestos-containing products. It is anticipated that additional personal  injury
and property damage cases containing similar allegations will be filed.

    As discussed below, U.S. Gypsum has substantial personal injury and property
damage  insurance for  the years involved  in the asbestos  litigation. Prior to
1985, when  an asbestos  exclusion was  added to  U.S. Gypsum's  policies,  U.S.
Gypsum  purchased  comprehensive general  liability insurance  policies covering
personal injury and property damage in an aggregate face amount of approximately
$850 million. Insurers that issued approximately $106 million of these  policies
are   presently  insolvent.  After  deducting  insolvencies  and  exhaustion  of
policies, approximately $625 million of insurance remains potentially available.
Because U.S. Gypsum's insurance carriers  initially responded to its claims  for
defense  and indemnification with various  theories denying or limiting coverage
and the applicability of

                                      F-15
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
their policies, U.S. Gypsum filed a declaratory judgment action against them  in
the  Circuit Court of Cook  County, Illinois on December  29, 1983. (U.S. GYPSUM
CO. V.  ADMIRAL INSURANCE  CO., ET  AL.) (the  "Coverage Action").  U.S.  Gypsum
alleges  in  the Coverage  Action  that the  carriers  are obligated  to provide
indemnification for settlements and judgments and, in some cases, defense  costs
incurred  by U.S. Gypsum in property damage  and personal injury claims in which
it is  a defendant.  The  current defendants  are  ten insurance  carriers  that
provided  comprehensive  general  liability insurance  coverage  to  U.S. Gypsum
between the 1940's and 1984. As  discussed below, several carriers have  settled
all or a portion of the claims in the Coverage Action.

    U.S.  Gypsum's  aggregate  expenditures  for  all  asbestos-related matters,
including property damage,  personal injury, insurance  coverage litigation  and
related  expenses,  exceeded aggregate  insurance payments  by $10.9  million in
1991, $25.8 million in 1992, and $8.2 million in 1993.

PROPERTY DAMAGE CASES

    The Property Damage Cases have been brought against U.S. Gypsum by a variety
of plaintiffs, including school districts, state and local governments, colleges
and universities, hospitals and private property  owners. U.S. Gypsum is one  of
many  defendants in  four cases  that have been  certified as  class actions and
others that request  such certification.  One class  action suit  is brought  on
behalf  of owners and operators  of all elementary and  secondary schools in the
United States that  contain or contained  friable asbestos-containing  material.
(IN  RE  ASBESTOS SCHOOL  LITIGATION,  U.S.D.C., E.D.  Pa.)  Approximately 1,350
school districts opted out of  the class, some of which  have filed or may  file
separate  lawsuits or are  participants in a state  court class action involving
approximately 333 school districts in Michigan. (BOARD OF EDUCATION OF THE  CITY
OF DETROIT, ET AL. V. THE CELOTEX CORP., ET AL., Circuit Court for Wayne County,
Mich.)  On  April 10,  1992, a  state  court in  Philadelphia certified  a class
consisting of all owners of buildings leased to the federal government.  (PRINCE
GEORGE  CENTER,  INC.  V.  U.S.  GYPSUM CO.,  ET  AL.,  Court  of  Common Pleas,
Philadelphia, Pa.)  On September  4, 1992,  a Federal  district court  in  South
Carolina   conditionally  certified  a  class  comprised  of  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  December 23, 1992, a
case was filed in state court in  South Carolina purporting to be a  "voluntary"
class  action on behalf of  owners of all buildings  containing certain types of
asbestos-containing  products  manufactured  by   the  nine  named   defendants,
including  U.S.  Gypsum, other  than  buildings owned  by  the federal  or state
governments, single  family  residences,  or  buildings at  issue  in  the  four
above-described  class actions (ANDERSON COUNTY HOSPITAL V. W.R. GRACE & CO., ET
AL., Court of Common Pleas, Hampton Co., S.C. (the "Anderson Case"). On  January
14, 1993, the plaintiff filed an amended complaint that added a number of claims
and  defendants, including USG Corporation. The amended complaint alleges, among
other things, that the guarantees executed by U.S. Gypsum in connection with the
1988 Recapitalization, as  well as  subsequent distributions of  cash from  U.S.
Gypsum  to  the Corporation,  rendered U.S.  Gypsum  insolvent and  constitute a
fraudulent conveyance. The suit  seeks to set aside  the guarantees and  recover
the  value of the cash flow "diverted" from U.S. Gypsum to the Corporation in an
amount to be determined. This case has not been certified as a class action  and
no  other threshold  issues, including  whether the  South Carolina  Courts have
personal jurisdiction  over  the Corporation,  have  been decided.  The  damages
claimed  against U.S.  Gypsum in  the class  action cases  are unspecified. U.S.
Gypsum has denied  the substantive allegations  of each of  the Property  Damage
Cases and intends to defend them vigorously except when advantageous settlements
are possible.

                                      F-16
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    As  of December 31, 1993, 61 Property Damage Cases were pending against U.S.
Gypsum; however, the number of buildings involved is greater than the number  of
cases  because  many of  these cases,  including the  class actions  referred to
above, involve multiple buildings. In addition, approximately 42 property damage
claims have been threatened against U.S. Gypsum.

    In total, U.S. Gypsum  has settled property  damage claims of  approximately
191  plaintiffs involved in approximately 75  cases. Twenty-five cases have been
tried to verdict,  16 of which  were won by  U.S. Gypsum and  6 lost; two  other
cases,  one won at  the trial level  and one lost,  were settled during appeals.
Another case that was lost at the trial court level has been reversed on  appeal
and  a new trial  ordered. Appeals are pending  in 5 of the  tried cases. In the
cases lost, compensatory damage  awards against U.S.  Gypsum have totaled  $11.5
million.  Punitive  damages totalling  $5.5  million were  entered  against U.S.
Gypsum in  four trials.  Two  of the  punitive  damage awards,  totalling  $1.45
million,  were paid after appeals were exhausted;  a third was settled after the
verdict was  reversed on  appeal.  The remaining  punitive  damage award  is  on
appeal.

    In  1991, 13 new  Property Damage Cases  were filed against  U.S. Gypsum, 11
were dismissed before trial,  8 were settled, 2  were closed following trial  or
appeal, and 100 were pending at year-end. U.S. Gypsum expended $22.2 million for
the  defense  and resolution  of Property  Damage  Cases and  received insurance
payments of $13.8 million in 1991. During 1992, 7 new Property Damage Cases were
filed against U.S. Gypsum,  10 were dismissed before  trial, 18 were settled,  3
were  closed following trial  or appeal, and  76 were pending  at year-end. U.S.
Gypsum expended $34.9 million for the defense and resolution of Property  Damage
Cases  and received insurance payments of $10.2  million in 1992. In 1993, 5 new
Property Damage Cases were  filed against U.S. Gypsum,  7 were dismissed  before
trial,  11  were  settled,  1  was closed  following  trial  or  appeal,  2 were
consolidated into 1, and 61 were pending at year-end. U.S. Gypsum expended $13.9
million for the  defense and resolution  of Property Damage  Cases and  received
insurance payments of $7.6 million in 1993.

    In  the Property Damage Cases litigated to date, a defendant's liability for
compensatory damages, if any,  has been limited to  damages associated with  the
presence  and  quantity  of asbestos-containing  products  manufactured  by that
defendant which are identified in the buildings at issue, although plaintiffs in
some cases have  argued that principles  of joint and  several liability  should
apply.  Because of the  unique factors inherent  in each of  the Property Damage
Cases, including the lack of  reliable information as to product  identification
and  the amount of damages claimed against  U.S. Gypsum in many cases, including
the class actions  described above, management  is unable to  make a  reasonable
estimate of the cost of disposing of pending Property Damage Cases.

PERSONAL INJURY CASES

    U.S.  Gypsum was among numerous defendants in asbestos personal injury suits
and administrative claims involving approximately 59,000 claimants pending as of
December 31, 1993.  All asbestos  bodily injury  claims pending  in the  federal
courts,  including approximately one-third of  the Personal Injury Cases pending
against U.S. Gypsum, have been consolidated in the United States District  Court
for the Eastern District of Pennsylvania.

    U.S.  Gypsum  is  a  member,  together with  19  other  former  producers of
asbestos-containing  products,  of  the   Center  for  Claims  Resolution   (the
"Center").  The  Center  has assumed  the  handling, including  the  defense and
settlement, of all  Personal Injury Cases  pending against U.S.  Gypsum and  the
other  members of the Center. Each member of the Center is assessed a portion of
the liability and  defense costs  of the Center  for the  Personal Injury  Cases
handled  by the Center, according to  predetermined allocation formulas. Five of
U.S.  Gypsum's   insurance   carriers  that   in   1985  signed   an   Agreement

                                      F-17
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
Concerning  Asbestos-Related Claims (the  "Wellington Agreement") are supporting
insurers (the "Supporting Insurers") of the Center. The Supporting Insurers  are
obligated  to  provide  coverage for  the  defense  and indemnity  costs  of the
Center's  members  pursuant  to  the  coverage  provisions  in  the   Wellington
Agreement.  Claims for punitive damages are defended but not paid by the Center;
if punitive damages are recovered, insurance coverage may be available under the
Wellington  Agreement  depending  on  the  terms  of  particular  policies   and
applicable state law. Punitive damages have not been awarded against U.S. Gypsum
in  any of the  Personal Injury Cases.  Virtually all of  U.S. Gypsum's personal
injury liability and defense costs are  paid by those of its insurance  carriers
that  are Supporting  Insurers. The  Supporting Insurers  provided approximately
$350 million of  the total coverage  referred to above,  of which  approximately
$262 million remains unexhausted.

    On  January 15, 1993, U.S.  Gypsum and the other  members of the Center were
named as defendants in a class action  filed in the U.S. District Court for  the
Eastern  District of Pennsylvania  (GEORGINE ET AL. V.  AMCHEM PRODUCTS INC., ET
AL.,  Case   No.  93-CV-0215)   (hereinafter  "Georgine,"   formerly  known   as
"Carlough").  The complaint  generally defines  the class  of plaintiffs  as all
persons who  have been  occupationally exposed  to asbestos-containing  products
manufactured by the defendants and who had not filed an asbestos personal injury
suit  as of the date of the filing  of the class action. Simultaneously with the
filing of the class  action, the parties filed  a settlement agreement in  which
the  named  plaintiffs, proposed  class counsel,  and  the defendants  agreed to
settle and  compromise the  claims of  the proposed  class. The  settlement,  if
approved  by the  court, will  implement for  all future  Personal Injury Cases,
except as noted below, an administrative compensation system to replace judicial
claims against the defendants, and  will provide fair and adequate  compensation
to future claimants who can demonstrate exposure to asbestos-containing products
manufactured  by the defendants and the presence of an asbestos-related disease.
Class members  will be  given  the opportunity  to "opt  out,"  or elect  to  be
excluded  from  the settlement,  although the  defendants  reserve the  right to
withdraw from  the settlement  if  the number  of opt  outs  is, in  their  sole
judgment,  excessive. In  addition, in each  year a limited  number of claimants
will have certain  rights to prosecute  their claims for  compensatory (but  not
punitive)  damages in court in the event they reject the compensation offered by
the administrative processing of their claim.

    The Center  members,  including  U.S. Gypsum,  have  instituted  proceedings
against  those of their insurance carriers that had not consented to support the
settlement, seeking a  declaratory judgment  that the  settlement is  reasonable
and,  therefore, that the  carriers are obligated  to fund their  portion of it.
Consummation of the  settlement is  contingent upon, among  other things,  court
approval  of the settlement  and a favorable ruling  in the declaratory judgment
proceedings against the non-consenting insurers. It is anticipated that  appeals
will  follow the district  court's ruling on the  fairness and reasonableness of
the settlement.

    Each of  the defendants  has committed  to  fund a  defined portion  of  the
settlement,  up to a stated maximum amount,  over the initial ten year period of
the  agreement  (which  is  automatically  extended  unless  terminated  by  the
defendants).  Taking  into account  the provisions  of the  settlement agreement
concerning the maximum number of claims that must be processed in each year  and
the  total amount to  be made available  to the claimants,  the Center estimates
that U.S.  Gypsum will  be obligated  to fund  a maximum  of approximately  $125
million  of the class  action settlement, exclusive of  expenses, with a maximum
payment of less than $18 million in any single year; of the total amount of U.S.
Gypsum's obligation, all but approximately $7 million is expected to be paid  by
U.S. Gypsum's insurance carriers.

    During  1991, approximately 13,100 Personal  Injury Cases were filed against
U.S. Gypsum  and approximately  6,300  were settled  or dismissed.  U.S.  Gypsum
incurred expenses of $15.1 million in 1991 with respect to Personal Injury Cases
of    which   $15.0    million   was    paid   by    insurance.   During   1992,

                                      F-18
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
approximately 20,100 Personal Injury  Cases were filed  against U.S. Gypsum  and
approximately 10,600 were settled or dismissed. U.S. Gypsum incurred expenses of
$21.6  million in  1992 with  respect to  Personal Injury  Cases of  which $21.5
million was paid by insurance. During 1993, approximately 26,900 Personal Injury
Cases were filed against  U.S. Gypsum and approximately  22,900 were settled  or
dismissed.  U.S. Gypsum incurred expenses of  $34.9 million in 1993 with respect
to Personal Injury Cases  of which $34.0  million was paid  by insurance. As  of
December  31, 1993,  1992, and  1991, approximately  59,000, 54,000,  and 43,000
Personal Injury Cases were outstanding against U.S. Gypsum, respectively.

    U.S. Gypsum's average  settlement cost  for Personal Injury  Cases over  the
past  three years has been approximately  $1,600 per claim, exclusive of defense
costs. Management  anticipates that  its average  settlement cost  is likely  to
increase  due  to  such factors  as  the possible  insolvency  of co-defendants,
although this increase may be offset to some extent by other factors,  including
the possibility for block settlements of large numbers of cases and the apparent
increase in the percentage of asbestos personal injury cases that appear to have
been  brought by individuals with little  or no physical impairment. Through the
Center, U.S.  Gypsum has  reached settlements  on approximately  26,700  pending
Personal  Injury Cases  for an  amount estimated  at approximately  $32 million.
These settlements will  be consummated and  the cases closed  over a three  year
period.  In management's opinion, based  primarily upon U.S. Gypsum's experience
in the Personal Injury Cases disposed of to date and taking into consideration a
number of  uncertainties,  it is  probable  that all  asbestos-related  Personal
Injury  Cases  pending against  U.S.  Gypsum as  of  December 31,  1993,  can be
disposed of for a  total amount, including both  indemnity costs and legal  fees
and  expenses, estimated to be  between $100 million and  $120 million (of which
all but  $2 million  or $5  million, respectively,  is expected  to be  paid  by
insurance).  The estimated cost of resolving  pending claims takes into account,
among other factors, (i) an increase in  the number of pending claims; (ii)  the
settlements  of certain large blocks of claims for higher per-case averages than
have historically been paid; (iii)  the committed but unconsummated  settlements
described  above;  and  (iv)  a  small  increase  in  U.S.  Gypsum's  historical
settlement average.

    Assuming that  the Georgine  class action  settlement referred  to above  is
approved  substantially  in its  current  form, management  estimates,  based on
assumptions supplied  by the  Center, U.S.  Gypsum's maximum  total exposure  in
Personal  Injury  Cases during  the  next ten  years  (the initial  term  of the
agreement), including liability for pending  claims and claims resolved as  part
of  the class action settlement, as well as defense costs and other expenses, at
approximately $262 million, of which  approximately $250 million is expected  to
be  paid by  insurance. U.S.  Gypsum's additional  exposure for  claims filed by
persons who have opted out of Georgine would depend on the number of such claims
that are filed, which cannot presently be determined.

COVERAGE ACTION

    As indicated above, all of U.S. Gypsum's carriers initially denied  coverage
for  the Property Damage  Cases and the  Personal Injury Cases,  and U.S. Gypsum
initiated the Coverage  Action to  establish its  right to  such coverage.  U.S.
Gypsum  has voluntarily dismissed the Supporting Insurers referred to above from
the personal injury portion of the Coverage Action because they are committed to
providing personal injury coverage in accordance with the Wellington  Agreement.
U.S.  Gypsum's  claims  against  the remaining  carriers  for  coverage  for the
Personal Injury Cases have been stayed since 1984.

    On January 7,  1991, the trial  court in  the Coverage Action  ruled on  the
applicability of U.S. Gypsum's insurance policies to settlements and one adverse
judgment  in eight Property Damage  Cases. The court ruled  that the eight cases
were generally covered,  and imposed coverage  obligations on particular  policy
years based upon the dates when the presence of asbestos-containing material was
"first   discovered"  by  the   plaintiff  in  each   case.  The  court  awarded
reimbursement of approximately $6.2

                                      F-19
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
million spent  by  U.S. Gypsum  to  resolve the  eight  cases. U.S.  Gypsum  has
appealed  the court's ruling with respect to the policy years available to cover
particular claims, and  the carriers  have appealed  most other  aspects of  the
court's  ruling. The appeal process is likely to  take up to a year or more from
the date of this report.

    U.S. Gypsum's experience in the  Property Damage Cases suggests that  "first
discovery"  dates in the eight  cases referred to above  (1978 through 1985) are
likely to  be typical  of  most pending  cases.  U.S. Gypsum's  total  insurance
coverage  for the years  1978 through 1984 is  approximately $350 million (after
subtracting insolvencies  and discounts  given to  settling carriers).  However,
some  pending cases, as well as some cases  filed in the future, may be found to
have first discovery dates later than August 1, 1984, after which U.S.  Gypsum's
insurance  policies  did not  provide coverage  for asbestos-related  claims. In
addition, as described below, the first layer excess carrier for the years  1980
through  1984  is insolvent  and  U.S. Gypsum  may  be required  to  pay amounts
otherwise covered by  those and  other insolvent policies.  Accordingly, if  the
court's  ruling  is affirmed,  U.S. Gypsum  will  likely be  required to  bear a
portion of the cost of the property damage litigation.

    Eight carriers, including two of the Supporting Insurers, have settled  U.S.
Gypsum's  claims for both property damage  and personal injury coverage and have
been dismissed from the  Coverage Action entirely. Four  of these carriers  have
agreed to pay all or a substantial portion of their policy limits to U.S. Gypsum
beginning  in 1991 and continuing  over the next four  years. Three other excess
carriers, including the two settling Supporting Insurers, have agreed to provide
coverage for the Property Damage Cases and the Personal Injury Cases subject  to
certain  limitations and conditions,  when and if  underlying primary and excess
coverage is  exhausted. It  cannot presently  be determined  when such  coverage
might   be  reached.  Taking  into  account  the  above  settlements,  including
participation of certain of the  settling carriers in the Wellington  Agreement,
and  consumption  through  December  31, 1993,  carriers  providing  a  total of
approximately $90 million of unexhausted  insurance have agreed, subject to  the
terms  of the various settlement agreements, to cover both Personal Injury Cases
and Property  Damage Cases.  Carriers providing  an additional  $250 million  of
coverage  that was  unexhausted as  of December  31, 1993  have agreed  to cover
Personal Injury Cases under  the Wellington Agreement,  but continue to  contest
coverage for Property Damage Cases and remain defendants in the Coverage Action.
U.S.  Gypsum will continue  to seek negotiated resolutions  with its carriers in
order to minimize the expense and delays of litigation.

    Insolvency proceedings have  been instituted against  four of U.S.  Gypsum's
insurance  carriers.  Midland  Insurance Company,  declared  insolvent  in 1986,
provided excess insurance ($4  million excess of $1  million excess of  $500,000
primary  in  each policy  year) from  February  15, 1975  to February  15, 1978;
Transit Casualty Company, declared insolvent in 1985, provided excess  insurance
($15  million excess of $1  million primary in each  policy year) from August 1,
1980 to December 31,  1985; Integrity Insurance  Company, declared insolvent  in
1986,  provided excess insurance ($10 million  quota share of $25 million excess
of $90  million) from  August 1,  1983 to  July 31,  1984; and  American  Mutual
Insurance  Company, declared  insolvent in 1989,  provided the  primary layer of
insurance ($500,000 per year)  from February 1,  1963 to April  15, 1971. It  is
possible  that U.S.  Gypsum will be  required to pay  a presently indeterminable
portion of the costs that would  otherwise have been covered by these  policies.
In  addition, portions  of various policies  issued by Lloyd's  and other London
market companies between  1966 and 1979  have also become  insolvent; under  the
Wellington   Agreement,  U.S.  Gypsum  must   pay  these  amounts,  which  total
approximately $12 million.

    It is not  possible to predict  the number of  additional lawsuits  alleging
asbestos-related  claims that  may be filed  against U.S. Gypsum.  The number of
Personal Injury Cases pending against U.S.  Gypsum has increased in each of  the
last  several years.  In addition,  many Property Damage  Cases are  still at an

                                      F-20
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
early stage and the potential liability therefrom is consequently uncertain.  In
view  of  the limited  insurance funding  currently  available for  the Property
Damage Cases  resulting  from the  continued  resistance  by a  number  of  U.S.
Gypsum's  insurers to providing coverage, the  effect of the asbestos litigation
on the Corporation will depend upon a variety of factors, including the  damages
sought  in the Property Damage Cases that reach trial prior to the completion of
the Coverage Action, U.S. Gypsum's ability to successfully defend or settle such
cases, and the  resolution of the  Coverage Action. As  a result, management  is
unable  to determine whether an adverse  outcome in the asbestos litigation will
have a material adverse effect on the results of operations or the  consolidated
financial position of the Corporation.

ACCOUNTING CHANGE

    Effective  January 1, 1994,  the Corporation will  adopt the requirements of
Financial Accounting Standards Board Interpretation  No. 39. In accordance  with
Interpretation  No. 39, U.S.  Gypsum will record an  accrual for its liabilities
for asbestos-related matters  which are  deemed probable and  can be  reasonably
estimated,  and will  separately record  an asset  equal to  the amount  of such
liabilities that  is  expected to  be  paid  by uncontested  insurance.  Due  to
management's  inability  to  reasonably  estimate  U.S.  Gypsum's  liability for
Property Damage  Cases  and (until  the  implementation of  Georgine  is  deemed
probable)  future Personal  Injury Cases, it  is presently  anticipated that the
liabilities and  assets to  be recorded  in  1994 will  relate only  to  pending
Personal  Injury  Cases. This  implementation of  Interpretation  No. 39  is not
expected to have a material impact on reported earnings or net assets.

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 substantially all 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  estimable 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 USG-owned property are  also
covered   by  reserves  established  in   accordance  with  the  foregoing.  The
Corporation believes that neither these matters nor any other known governmental
proceeding regarding environmental matters will  have a material adverse  effect
upon its earnings or consolidated financial position.

SUBSEQUENT EVENT

    On   January  7,  1994,  the  Corporation  filed  a  Registration  Statement
(Registration No. 33-51845), as amended on February 16, 1994, pertaining to  its
planned public offering (the "Offering") of 6,000,000 new shares of common stock
to be sold by the Corporation and 4,000,000 shares of common stock to be sold by
Water  Street  Corporate  Recovery  Fund  I, L.P.  The  Offering  is  part  of a
refinancing  strategy  which  also  includes   (i)  the  placement  (the   "Note
Placement")  of $150 million principal amount  of Senior 2001 Notes with certain
institutional investors and (ii) certain amendments to the Corporation's  Credit
Agreement (the "Credit Agreement Amendments" and, together with the Offering and
the  Note Placement, the "Transactions").  The Credit Agreement Amendments will,
among other  things, increase  the size  of the  Corporation's revolving  credit
facilty  by $70 million  and amend existing mandatory  Bank Term Loan prepayment
provisions to allow the Corporation,  upon the achievement of certain  financial
tests,  to retain  additional free  cash flow  for capital  expenditures and the
purchase of its public debt. Certain Credit Agreement Amendments are  contingent
on the consummation of the Offering.

                                      F-21
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    The  Corporation  expects to  use a  portion  of the  net proceeds  from the
Offering and the  Note Placement,  together with approximately  $158 million  of
existing  cash generated from operations to pay  $140 million of Bank Term Loans
and to redeem or purchase approximately $260 million aggregate principal  amount
of  certain  other  senior  debt  issues. The  remainder  of  the  net proceeds,
approximately $92 million,  will be  available for  general corporate  purposes,
including  capital  expenditures for  cost  reduction, capacity  improvement and
future growth opportunities. The following  is an unaudited Pro Forma  Condensed
Consolidated  Balance Sheet as  of December 31, 1993  illustrating the effect of
the Transactions as if they had occurred on that date:

<TABLE>
<CAPTION>
                                                USG CORPORATION
                                 PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
                                            AS OF DECEMBER 31, 1993
                                                  (UNAUDITED)
                                             (DOLLARS IN MILLIONS)
                                                                                      HISTORICAL     PRO FORMA
                                                                                      -----------  -------------
<S>                                                                                   <C>          <C>
Cash and cash equivalents...........................................................   $     211     $     145
Other current assets................................................................         409           409
Other assets........................................................................       1,543         1,543
                                                                                      -----------  -------------
    Total assets....................................................................       2,163         2,097
                                                                                      -----------  -------------
                                                                                      -----------  -------------
Long-term debt maturing within one year.............................................   $     165     $       7
Other current liabilities...........................................................         334           334
Long-term debt......................................................................       1,309         1,218
Other liabilities...................................................................         489           489
Total stockholders' equity..........................................................        (134)           49
                                                                                      -----------  -------------
    Total liabilities and stockholders' equity......................................       2,163         2,097
                                                                                      -----------  -------------
                                                                                      -----------  -------------
</TABLE>

GEOGRAPHIC AND INDUSTRY SEGMENTS

    Transactions between geographic areas are accounted for on an "arm's-length"
basis. No single customer  accounted for 4% or  more of consolidated net  sales.
Export  sales  to  foreign unaffiliated  customers  represent less  than  10% of
consolidated net sales.

    Intrasegment and  intersegment  eliminations  largely  reflect  intercompany
sales  from U.S. Gypsum to L&W  Supply. Segment operating profit/(loss) includes
all costs and expenses directly related to the

                                      F-22
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
segment involved  and an  allocation of  expenses which  benefit more  than  one
segment. Segment operating profit/(loss) also includes the non-cash amortization
of  Excess  Reorganization  Value which  had  the impact  of  reducing operating
profit.

<TABLE>
<CAPTION>
                                                    AMORTIZATION
 MAY 7 THROUGH DECEMBER               OPERATING       OF EXCESS       DEPRECIATION
        31, 1993                       PROFIT/     REORGANIZATION     DEPLETION AND       CAPITAL         IDENTIFIABLE
  GEOGRAPHIC SEGMENTS     NET SALES    (LOSS)           VALUE         AMORTIZATION     EXPENDITURES          ASSETS
- ------------------------  ---------  -----------  -----------------  ---------------  ---------------  -------------------
                                                               (DOLLARS IN MILLIONS)
<S>                       <C>        <C>          <C>                <C>              <C>              <C>
United States:
  Gypsum Products.......  $     683   $      47       $      41         $      20        $      17          $     904
  Interior Systems......        255         (22)             47                 5                2                510
  Building Products
   Distribution.........        372           4               2                 1                1                121
  Intrasegment
   eliminations.........       (163)         --              --                --               --                 --
  Corporate.............         --         (26 )            --                10               --                254
                          ---------  -----------        -------           -------          -------            -------
  Total.................      1,147           3              90                36               20              1,789
Canada..................         95          (6 )            12                 5                6                178
Other Foreign...........        143           4              11                 3                3                197
Transfers between
 geographic areas.......        (60)         --              --                --               --                 (1     )
                          ---------  -----------        -------           -------          -------            -------
Total...................      1,325           1             113                44               29              2,163
                          ---------  -----------        -------           -------          -------            -------
                          ---------  -----------        -------           -------          -------            -------
INDUSTRY SEGMENTS
- ------------------------
Gypsum Products.........  $     806  $       53   $          51      $         25     $         23     $        1,093
Interior Systems........        373         (30 )            60                 8                5                695
Building Products
 Distribution...........        372           4               2                 1                1                121
Intersegment
 eliminations...........       (226)         --              --                --               --                 --
Corporate...............         --         (26 )            --                10               --                254
                          ---------  -----------        -------           -------          -------            -------
Total...................      1,325           1             113                44               29              2,163
                          ---------  -----------        -------           -------          -------            -------
                          ---------  -----------        -------           -------          -------            -------

<CAPTION>
                                                                                                              MAY 7
                                                                                                             THROUGH
                                                                                                          DECEMBER 31,
                                                                                                              1993
                                                                                                       -------------------
<S>                       <C>        <C>          <C>                <C>              <C>              <C>
TRANSFERS BETWEEN GEOGRAPHIC AREAS                                                                (DOLLARS IN MILLIONS)
- -----------------------------------
United States........................................................................................  $           25
Canada...............................................................................................              16
Other Foreign........................................................................................              19
                                                                                                              -------
Total................................................................................................              60
                                                                                                              -------
                                                                                                              -------
</TABLE>

                                      F-23
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

SUBSIDIARY DEBT GUARANTEES

    The Corporation issued  $340 million  aggregate principal  amount of  Senior
2002 Notes in May 1993 and an additional $138 million aggregate principal amount
of  similar notes in August 1993. Each of U.S. Gypsum, USG Industries, Inc., USG
Interiors, USG Foreign Investments, Ltd., L&W Supply, Westbank Planting Company,
USG Interiors International,  Inc., American  Metals Corporation  and La  Mirada
Products  Co.,  Inc. (together,  the "Combined  Guarantors") guaranteed,  in the
manner described below, both the obligations of the Corporation under the Credit
Agreement and the  Senior 2002 Notes.  The Combined Guarantors  are jointly  and
severally  liable under the Subsidiary Guarantees. Holders of the Bank Debt have
the right to (i) determine whether, when and to what extent the guarantees  will
be  enforced (provided that each  guarantee payment will be  applied to the Bank
Term Loan, Revolving Credit Facility, Capitalized Interest Notes and Senior 2002
Notes pro rata based on the respective  amounts owed thereon) and (ii) amend  or
eliminate the guarantees. The guarantees will terminate when the Bank Term Loan,
the  Revolving Credit  Facility and the  Capitalized Interest  Notes are retired
regardless of whether any Senior 2002 Notes remain unpaid. The liability of each
of the Combined Guarantors on its guarantee is limited to the greater of (i) 95%
of the lowest amount, calculated as of  July 13, 1988, sufficient to render  the
guarantor  insolvent,  leave the  guarantor with  unreasonably small  capital or
leave the guarantor unable to pay its debts as they become due (each as  defined
under  applicable law) and (ii)  the same amount, calculated  as of the date any
demand for payment under  such guarantee is made,  in each case plus  collection
costs.  The guarantees  are senior obligations  of the  applicable guarantor and
rank PARI PASSU with all unsubordinated obligations of the guarantor.

    There are 43 Non-Guarantors  (the "Combined Non-Guarantors"),  substantially
all  of  which  are  subsidiaries  of  Guarantors.  The  Combined Non-Guarantors
primarily include CGC, Gypsum Transportation  Limited, USG Canadian Mining  Ltd.
and  the Corporation's Mexican, European and Pacific subsidiaries. The long-term
debt of the Combined Non-Guarantors of $24  million as of December 31, 1993  has
restrictive  covenants  that  restrict,  among  other  things,  the  payment  of
dividends.

    The following condensed consolidating information presents:

 (i) Condensed financial statements as of December  31, 1993 and for the  period
     of  May 7  through December 31,  1993 of:  (a) the Corporation  on a parent
     company only basis (the "Parent Company," which was the only entity of  the
     Corporation  included  in  the  bankruptcy  proceeding);  (b)  the Combined
     Guarantors; (c) the Combined Non-Guarantors;  and (d) the Corporation on  a
     consolidated  basis. Due to  the Restructuring and  implementation of fresh
     start accounting,  the financial  statements for  the restructured  company
     (periods  after May 6, 1993) are not comparable to those of the predecessor
     company. Except for the following condensed financial statements,  separate
     financial information with respect to the Combined Guarantors is omitted as
     such separate financial information is not deemed material to investors.

 (ii) The Parent Company and Combined Guarantors shown with their investments in
      their subsidiaries accounted for on the equity method.

 (iii) Elimination  entries necessary to consolidate  the Parent Company and its
       subsidiaries.

                                      F-24
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                 CONDENSED CONSOLIDATING STATEMENT OF EARNINGS
                        MAY 7 THROUGH DECEMBER 31, 1993
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                           COMBINED
                                                 PARENT      COMBINED        NON-
                                                 COMPANY    GUARANTORS    GUARANTORS    ELIMINATIONS   CONSOLIDATED
                                               -----------  -----------  -------------  -------------  -------------
<S>                                            <C>          <C>          <C>            <C>            <C>
Net sales....................................   $      --    $   1,153     $     238      $     (66)     $   1,325
                                               -----------  -----------       ------         ------    -------------
Gross profit.................................          --          216            47             --            263
                                               -----------  -----------       ------         ------    -------------
Operating profit/(loss)......................         (27)          30            (2)            --              1
Equity in net loss of the Subsidiaries.......         291           11            --           (302)            --
Interest expense, net........................          84            2             2             --             88
Corporate service charge.....................        (106)         106            --             --             --
Other expense/(income).......................        (197)         188             1             --             (8)
                                               -----------  -----------       ------         ------    -------------
Loss before taxes on income and extraordinary
 loss........................................         (99)        (277)           (5)           302            (79)
Taxes on income..............................           9           14             6             --             29
                                               -----------  -----------       ------         ------    -------------
Loss before extraordinary loss...............        (108)        (291)          (11)           302           (108)
Extraordinary loss, net of taxes.............         (21)          --            --             --            (21)
                                               -----------  -----------       ------         ------    -------------
Net loss.....................................        (129)        (291)          (11)           302           (129)
                                               -----------  -----------       ------         ------    -------------
                                               -----------  -----------       ------         ------    -------------
</TABLE>

                                      F-25
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                     CONDENSED CONSOLIDATING BALANCE SHEET
                            AS OF DECEMBER 31, 1993
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                           COMBINED
                                                 PARENT      COMBINED        NON-
                                                 COMPANY    GUARANTORS    GUARANTORS    ELIMINATIONS   CONSOLIDATED
                                               -----------  -----------  -------------  -------------  -------------
<S>                                            <C>          <C>          <C>            <C>            <C>
ASSETS
Current Assets:
  Cash and cash equivalents..................   $     187    $      (8)    $      32      $      --      $     211
  Receivables, net...........................           8          240            44            (28)           264
  Inventories................................          --          114            34             (3)           145
                                               -----------  -----------       ------         ------    -------------
    Total current assets.....................         195          346           110            (31)           620
Property, plant and equipment, net...........          21          620           113             --            754
Investment in Subsidiaries...................       1,511          277            --         (1,788)            --
Excess Reorganization Value, net.............          --          582           153             --            735
Other assets.................................         (35)          91             3             (5)            54
                                               -----------  -----------       ------         ------    -------------
    Total assets.............................       1,692        1,916           379         (1,824)         2,163
                                               -----------  -----------       ------         ------    -------------
                                               -----------  -----------       ------         ------    -------------
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
  Accounts payable and accrued expenses......   $     100    $     207     $      52      $     (27)     $     332
  Notes payable and long-term debt maturing
   within one year...........................         158            3             6             --            167
                                               -----------  -----------       ------         ------    -------------
    Total current liabilities................         258          210            58            (27)           499
Long-term debt...............................       1,249           36            24             --          1,309
Deferred income taxes........................          14          151            15             --            180
Other liabilities............................         296            8             5             --            309
Stockholders' Equity/(Deficit):
  Common stock...............................           4            1             6             (7)             4
  Capital received in excess of par value....          --        1,472           310         (1,782)            --
  Deferred currency translation..............          --           --            (9)            --             (9)
  Reinvested earnings/(deficit)..............        (129)          38           (30)            (8)          (129)
                                               -----------  -----------       ------         ------    -------------
    Total stockholders' equity/(deficit).....        (125)       1,511           277         (1,797)          (134)
                                               -----------  -----------       ------         ------    -------------
    Total liabilities and stockholders'
     equity..................................       1,692        1,916           379         (1,824)         2,163
                                               -----------  -----------       ------         ------    -------------
                                               -----------  -----------       ------         ------    -------------
</TABLE>

                                      F-26
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONCLUDED)

                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
                        MAY 7 THROUGH DECEMBER 31, 1993
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                           COMBINED
                                                 PARENT      COMBINED        NON-
                                                 COMPANY    GUARANTORS    GUARANTORS     ELIMINATIONS    CONSOLIDATED
                                               -----------  -----------  -------------  ---------------  -------------
<S>                                            <C>          <C>          <C>            <C>              <C>
NET CASH FLOWS (TO)/FROM OPERATING
 ACTIVITIES..................................   $     (27)   $     185     $      25       $      --       $     183
                                               -----------  -----------       ------             ---     -------------
  Capital expenditures.......................          --          (20)           (9)             --             (29)
  Net proceeds from asset dispositions.......          16           13            --              --              29
                                               -----------  -----------       ------             ---     -------------
NET CASH FLOWS (TO)/FROM INVESTING
 ACTIVITIES..................................          16           (7)           (9)             --              --
                                               -----------  -----------       ------             ---     -------------
  Issuance of debt...........................          --           --            36              --              36
  Repayment of debt..........................          (8)          (9)          (40)             --             (57)
  Cash dividends (paid)/received.............          --           12           (12)             --              --
  Net cash transfers (to)/from Corporate.....         182         (182)           --              --              --
                                               -----------  -----------       ------             ---     -------------
NET CASH FLOWS (TO)/FROM FINANCING
 ACTIVITIES..................................         174         (179)          (16)             --             (21)
                                               -----------  -----------       ------             ---     -------------
NET INCREASE/(DECREASE) IN CASH AND CASH
 EQUIVALENTS.................................         163           (1)           --              --             162
                                               -----------  -----------       ------             ---     -------------
Cash and cash equivalents at beginning of
 period......................................          24           (7)           32              --              49
                                               -----------  -----------       ------             ---     -------------
Cash and cash equivalents at end of period...         187           (8)           32              --             211
                                               -----------  -----------       ------             ---     -------------
                                               -----------  -----------       ------             ---     -------------
</TABLE>

                                      F-27
<PAGE>
                                USG CORPORATION
                               MANAGEMENT REPORT

    Management is responsible for the preparation and integrity of the financial
statements  and  related  notes  included  herein.  These  statements  have been
prepared in accordance  with generally  accepted accounting  principles and,  of
necessity,  include some amounts  that are based  on management's best estimates
and judgments.

    The Corporation's accounting systems  include internal controls designed  to
provide reasonable assurance of the reliability of its financial records and the
proper  safeguarding  and  use  of  its  assets.  Such  controls  are  based  on
established policies and procedures, are  implemented by trained personnel,  and
are  monitored through an internal audit program. The Corporation's policies and
procedures prescribe that the Corporation  and its subsidiaries are to  maintain
ethical  standards and  that its  business practices  are to  be consistent with
those standards.

    The Audit Committee of the Board, consisting solely of outside Directors  of
the  Corporation, maintains an ongoing appraisal, on behalf of the stockholders,
of the effectiveness of the independent auditors and management with respect  to
the  preparation of financial statements, the  adequacy of internal controls and
the Corporation's accounting policies.

                                      F-28
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Stockholders and Board
    of Directors of USG Corporation:

    We  have  audited  the  accompanying  consolidated  balance  sheet  of   USG
Corporation  (Restructured Company), a Delaware corporation, and subsidiaries as
of December 31,  1993 and the  related consolidated statements  of earnings  and
cash  flows for the period  of May 7 through  December 31, 1993. These financial
statements  are  the  responsibility   of  the  Corporation's  management.   Our
responsibility  is to express an opinion  on these financial statements based on
our audit.

    We conducted  our  audit  in accordance  with  generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence  supporting
the  amounts and disclosures in the financial statements. An audit also includes
assessing the  accounting  principles used  and  significant estimates  made  by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.

    As discussed in Notes to  Financial Statements -- "Financial  Restructuring"
note,  on  May  6, 1993,  the  Corporation completed  a  comprehensive financial
restructuring through the implementation of a prepackaged plan of reorganization
under Chapter 11 of  the United States Bankruptcy  Code and applied fresh  start
accounting.  As such,  results of  operations through  May 6,  1993 (Predecessor
Company) are not comparable with results of operations subsequent to that date.

    In our opinion, the financial  statements referred to above present  fairly,
in  all  material  respects,  the  financial  position  of  USG  Corporation and
subsidiaries as of December  31, 1993, and the  results of their operations  and
their  cash  flows  for  the period  of  May  7 through  December  31,  1993, in
conformity with generally accepted accounting principles.

    As discussed in Notes to Financial Statements -- "Litigation" note, in  view
of  the limited insurance funding currently  available for property damage cases
resulting from the continued resistance by a number of U.S. Gypsum's insurers to
providing coverage, the  effect of  the asbestos litigation  on the  Corporation
will  depend upon a variety of factors, including the damages sought in property
damage cases that reach  trial prior to the  completion of the coverage  action,
U.S.  Gypsum's  ability to  successfully defend  or settle  such cases,  and the
resolution of  the  coverage  action.  As a  result,  management  is  unable  to
determine  whether an  adverse outcome  in the  asbestos litigation  will have a
material adverse  effect  on  the  consolidated results  of  operations  or  the
consolidated financial position of the Corporation.

                                                           ARTHUR ANDERSEN & CO.

Chicago, Illinois
January 31, 1994

                                      F-29
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)

                                   SCHEDULE V
                         PROPERTY, PLANT AND EQUIPMENT
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                                              BEGINNING     ENDING
CLASSIFICATION                                                                                 BALANCE      BALANCE
- -------------------------------------------------------------------------------------------  -----------  -----------
<S>                                                                                          <C>          <C>
MAY 7 THROUGH DECEMBER 31, 1993
- -------------------------------------------------------------------------------------------
  Land and mineral deposits................................................................   $      61    $      61
  Buildings and realty improvements........................................................         228          233
  Machinery and equipment..................................................................         478          496
                                                                                             -----------  -----------
      Total................................................................................         767          790
                                                                                             -----------  -----------
                                                                                             -----------  -----------
</TABLE>

    In  accordance  with fresh  start accounting,  the Corporation  adjusted its
property, plant and equipment accounts as of May 6, 1993 to fair market value.

    Detailed information  regarding  additions  and  deductions  is  omitted  as
neither  total  additions nor  total deductions  during  the period  shown above
exceeded 10% of the balance at the  end of the period. Total additions were  $29
million,  total  deductions  were  $8 million  and  other  adjustments increased
property, plant and  equipment by  $2 million  in the  period of  May 7  through
December 31, 1993.

    Total  deductions include the  effect of foreign  currency translation which
increased total deductions by $5 million in the period of May 7 through December
31, 1993.

    Upon retirement or other  disposition of property,  the applicable cost  and
accumulated  depreciation and depletion are removed from the accounts. Any gains
and losses are included in earnings.

                                      F-30
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)

                                  SCHEDULE VI
                   ACCUMULATED DEPRECIATION AND DEPLETION OF
                         PROPERTY, PLANT AND EQUIPMENT
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                                           Beginning     Ending
Classification                                                                              Balance      Balance
- ----------------------------------------------------------------------------------------  -----------  -----------
<S>                                                                                       <C>          <C>
MAY 7 THROUGH DECEMBER 31, 1993
- ----------------------------------------------------------------------------------------
  Land and mineral deposits.............................................................  $        --  $        --
  Buildings and realty improvements.....................................................           --            8
  Machinery and equipment...............................................................           --           28
                                                                                          -----------  -----------
      Total.............................................................................           --           36
                                                                                          -----------  -----------
                                                                                          -----------  -----------
</TABLE>

    In accordance  with fresh  start accounting,  the Corporation  adjusted  its
property,  plant and equipment accounts as of  May 6, 1993 to fair market value.
Consequently, there were no reserves for depreciation and depletion as of May 7,
1993.

    Detailed information  regarding  additions  and  deductions  is  omitted  as
neither  total additions nor  total deductions of  property, plant and equipment
(see Schedule V) during the  period shown above exceeded  10% of the balance  of
property,  plant and equipment  at the end  of the period.  Total provisions for
depreciation and depletion were  $34 million, total  deductions were $1  million
and  other adjustments increased reserves  by $3 million in  the period of May 7
through December 31, 1993.

    Upon retirement or other  disposition of property,  the applicable cost  and
accumulated  depreciation and depletion are removed from the accounts. Any gains
and losses are included in earnings.

                                      F-31
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)

                                 SCHEDULE VIII
                       VALUATION AND QUALIFYING ACCOUNTS
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                               Provision
                                                                              Charged to       Receivables
                                                                Beginning      Costs and     Written Off and     Ending
Account                                                          Balance       Expenses     Discounts Allowed    Balance
- ------------------------------------------------------------  -------------  -------------  -----------------  -----------
<S>                                                           <C>            <C>            <C>                <C>
MAY 7 THROUGH DECEMBER 31, 1993
- ------------------------------------------------------------
  Doubtful accounts.........................................    $      11      $       4        $      (4)      $      11
  Cash discounts............................................            2             15              (15)              2
</TABLE>

                                      F-32
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)
                                  SCHEDULE IX
                             SHORT-TERM BORROWINGS
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                            Maximum        Average        Weighted
                                                                            Amount         Amount         Average
                                                            Weighted      Outstanding    Outstanding   Interest Rate
Category of Aggregate                          Ending        Average      During the     During the      During the
Short-Term Borrowings                          Balance    Interest Rate     Period       Period (a)      Period (b)
- -------------------------------------------  -----------  -------------  -------------  -------------  --------------
<S>                                          <C>          <C>            <C>            <C>            <C>
MAY 7 THROUGH DECEMBER 31, 1993
- -------------------------------------------
      Notes payable (c)....................   $       2         6.6%       $       9      $       7           6.6%
      Revolving Credit Facility (d)........          --            --              --             --              --
</TABLE>

(a) The average of month-end principal balances.

(b) Computed by dividing average monthly interest expense for the period by the
    average amount of short-term borrowings outstanding.

(c) Represents borrowings from several foreign banks by USG International and
    CGC which are generally not subject to the provisions of the Credit
    Agreement.

(d) The Credit Agreement includes a $175 million Revolving Credit Facility, of
    which $110 million was established as a letter of credit subfacility.

                                      F-33
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)

                                   SCHEDULE X
                 SUPPLEMENTAL STATEMENT OF EARNINGS INFORMATION
                             (DOLLARS IN MILLIONS)

The following amounts were charged to costs and expenses:

<TABLE>
<CAPTION>
                                                                                  May 7 through
                                                                                   December 31,
                                                                                       1993
                                                                                  --------------
<S>                                                                               <C>
Maintenance and repairs.........................................................    $       84
                                                                                  --------------
                                                                                  --------------
Depreciation, depletion and amortization........................................    $       44
Amortization of Excess Reorganization Value.....................................           113
                                                                                  --------------
    Total depreciation, depletion and amortization..............................           157
                                                                                  --------------
                                                                                  --------------
</TABLE>

    Maintenance and repairs are recorded as costs or expenses when incurred.

    Taxes (excluding payroll and income taxes), rents, royalties and advertising
costs are not shown above, as individually they do not exceed one percent of net
sales in the period shown.

                                      F-34
<PAGE>
                                USG CORPORATION
                             (RESTRUCTURED COMPANY)

                 SUPPLEMENTAL NOTE ON FINANCIAL INFORMATION FOR
                          UNITED STATES GYPSUM COMPANY
                       (A SUBSIDIARY OF USG CORPORATION)

    USG Corporation,  a holding  company, owns  several operating  subsidiaries,
including  U.S. Gypsum. On  January 1, 1985,  all of the  issued and outstanding
shares of stock of U.S. Gypsum were converted into shares of USG Corporation and
the holding company became  a joint and several  obligor for certain  debentures
originally  issued by U.S. Gypsum. As  of December 31, 1993, debentures totaling
$36 million were recorded on the  holding company's books of account.  Financial
results  for  U.S.  Gypsum are  presented  below in  accordance  with disclosure
requirements of the SEC (dollars in millions):

                         SUMMARY STATEMENT OF EARNINGS

<TABLE>
<CAPTION>
                                                                                                    May 7 through
                                                                                                     December 31,
                                                                                                         1993
                                                                                                    --------------
<S>                                                                                                 <C>
Net sales.........................................................................................    $      673
Cost and expenses.................................................................................           584
Amortization of Excess Reorganization Value.......................................................            41
                                                                                                    --------------
Operating profit..................................................................................            48
Interest income, net..............................................................................            (2)
Other income, net.................................................................................            (1)
Corporate charges.................................................................................            60
                                                                                                    --------------
Loss before taxes on income.......................................................................            (9)
Taxes on income...................................................................................            15
                                                                                                    --------------
Net loss..........................................................................................           (24)
                                                                                                    --------------
                                                                                                    --------------
</TABLE>

                             SUMMARY BALANCE SHEET

<TABLE>
<CAPTION>
                                                                                                    As of December
                                                                                                       31, 1993
                                                                                                    --------------
<S>                                                                                                 <C>
Current assets....................................................................................    $      190
Property, plant and equipment, net................................................................           483
Excess Reorganization Value, net..................................................................           265
Other assets......................................................................................             3
                                                                                                    --------------
    Total assets..................................................................................           941
                                                                                                    --------------
                                                                                                    --------------
Current liabilities...............................................................................    $      124
Other liabilities and obligations.................................................................           149
Stockholder's equity..............................................................................           668
                                                                                                    --------------
    Total liabilities and stockholder's equity....................................................           941
                                                                                                    --------------
                                                                                                    --------------
</TABLE>

                                      F-35
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
      WITH RESPECT TO SUPPLEMENTAL NOTE AND FINANCIAL STATEMENT SCHEDULES

    We have audited  in accordance with  generally accepted auditing  standards,
the  consolidated financial statements of USG Corporation (Restructured Company)
included in this Form S-1, and have issued our report thereon dated January  31,
1994.   Our  report  on  the   consolidated  financial  statements  includes  an
explanatory paragraph with respect  to the asbestos  litigation as discussed  in
Notes  to Financial Statements -- "Litigation" note.  Our audit was made for the
purpose of  forming an  opinion on  the basic  financial statements  taken as  a
whole.  The supplemental  note and financial  statement schedules  on pages F-30
through F-35  are the  responsibility of  the Corporation's  management and  are
presented   for  purposes  of   complying  with  the   Securities  and  Exchange
Commission's rules  and are  not part  of the  basic financial  statements.  The
supplemental  note and financial statement schedules  have been subjected to the
auditing procedures applied in the audit of the basic financial statements  and,
in  our  opinion,  fairly state  in  all  material respects  the  financial data
required to be set forth therein  in relation to the basic financial  statements
taken as a whole.

                                                           ARTHUR ANDERSEN & CO.
Chicago, Illinois
January 31, 1994

                                      F-36
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                       CONSOLIDATED STATEMENT OF EARNINGS
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                                  JANUARY 1   YEARS ENDED DECEMBER
                                                                                   THROUGH            31,
                                                                                   MAY 6,     --------------------
                                                                                    1993        1992       1991
                                                                                 -----------  ---------  ---------
<S>                                                                              <C>          <C>        <C>
Net Sales......................................................................   $     591   $   1,777  $   1,712
Cost of products sold..........................................................         482       1,460      1,385
                                                                                 -----------  ---------  ---------
Gross Profit...................................................................         109         317        327
Selling and administrative expenses............................................          71         218        194
                                                                                 -----------  ---------  ---------
Operating Profit...............................................................          38          99        133
Interest expense...............................................................          86         334        333
Interest income................................................................          (2)        (12)       (11)
Other expense, net.............................................................           6           1          5
Reorganization items...........................................................        (709)         --         --
                                                                                 -----------  ---------  ---------
Earnings/(Loss) from Continuing Operations Before Taxes on Income,
 Extraordinary Gain and Changes in Accounting Principles.......................         657        (224)      (194)
Taxes on income/(income tax benefit)...........................................          17         (33)       (53)
                                                                                 -----------  ---------  ---------
Earnings/(Loss) from Continuing Operations Before Extraordinary Gain and
 Changes in Accounting Principles..............................................         640        (191)      (141)
Extraordinary gain, net of taxes...............................................         944          --         --
Cumulative effect of changes in accounting principles, net.....................        (150)         --         --
                                                                                 -----------  ---------  ---------
Earnings/(Loss) from Continuing Operations.....................................       1,434        (191)      (141)
Reserve for DAP divestiture, net of taxes......................................          --          --        (20)
                                                                                 -----------  ---------  ---------
Net Earnings/(Loss)............................................................       1,434        (191)      (161)
                                                                                 -----------  ---------  ---------
                                                                                 -----------  ---------  ---------
</TABLE>

PER-SHARE INFORMATION IS OMITTED BECAUSE, DUE TO THE RESTRUCTURING AND
IMPLEMENTATION OF FRESH START ACCOUNTING, IT IS NOT MEANINGFUL.

THE NOTES TO FINANCIAL STATEMENTS ON PAGES F-40 THROUGH F-71 ARE AN INTEGRAL
PART OF THIS STATEMENT.

                                      F-37
<PAGE>
                                USG CORPORATION

                             (PREDECESSOR COMPANY)
                           CONSOLIDATED BALANCE SHEET
                             (DOLLARS IN MILLIONS)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                                            AS OF        AS OF
                                                                                           MAY 6,     DECEMBER 31,
                                                                                            1993          1992
                                                                                          ---------  --------------
<S>                                                                                       <C>        <C>
Current Assets:
Cash and cash equivalents (primarily time deposits).....................................  $      49    $      180
Receivables (net of reserves of $13 and $11)............................................        315           299
Inventories.............................................................................        148           113
Restricted cash.........................................................................         --            88
                                                                                          ---------       -------
  Total current assets..................................................................        512           680
                                                                                          ---------       -------
Property, Plant and Equipment, Net......................................................        767           800
Purchased Goodwill, Net.................................................................         --            69
Excess Reorganization Value.............................................................        851            --
Other Assets............................................................................         64           110
                                                                                          ---------       -------
  Total assets..........................................................................      2,194         1,659
                                                                                          ---------       -------
                                                                                          ---------       -------
                                       LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
Accounts payable........................................................................  $      96    $       91
Accrued interest expense................................................................          9           386
Other accrued expenses..................................................................        162           167
Notes payable...........................................................................          6             2
Revolving Credit Facility...............................................................         --           140
Long-term debt maturing within one year.................................................          9           576
Long-term debt classified as current....................................................         --         1,926
Taxes on income.........................................................................         13            --
                                                                                          ---------       -------
  Total current liabilities.............................................................        295         3,288
                                                                                          ---------       -------
Long-Term Debt..........................................................................      1,446            67
Deferred Income Taxes...................................................................        170           175
Other Liabilities.......................................................................        279             9
Stockholders' Equity/(Deficit):
Preferred stock -- $1 par value; $1.80 convertible preferred stock
                 (initial series); outstanding -- none..................................         --            --
Common stock -- $0.10 par value; outstanding 37,157,458 and 55,757,394 shares (after
                deducting 27,556 and 368,409 shares held in treasury)...................          4             5
Capital received in excess of par value.................................................         --            23
Deferred currency translation...........................................................         --            (8)
Reinvested earnings/(deficit)...........................................................         --        (1,900)
                                                                                          ---------       -------
  Total stockholders' equity/(deficit)..................................................          4        (1,880)
                                                                                          ---------       -------
  Total liabilities and stockholders' equity............................................      2,194         1,659
                                                                                          ---------       -------
                                                                                          ---------       -------
</TABLE>

THE NOTES TO FINANCIAL STATEMENTS ON PAGES F-40 THROUGH F-71 ARE AN INTEGRAL
PART OF THIS STATEMENT.

                                      F-38
<PAGE>
                                USG CORPORATION

                             (PREDECESSOR COMPANY)
                      CONSOLIDATED STATEMENT OF CASH FLOWS
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                                      JANUARY 1   YEARS ENDED DECEMBER
                                                                                       THROUGH            31,
                                                                                       MAY 6,     --------------------
                                                                                        1993        1992       1991
                                                                                     -----------  ---------  ---------
<S>                                                                                  <C>          <C>        <C>
Cash Flows from Operating Activities:
Earnings/(loss) from continuing operations.........................................   $   1,434   $    (191) $    (141)
Reserve for DAP divestiture, net of taxes..........................................          --          --        (20)
Adjustments to reconcile earnings/(loss) from continuing operations to net cash:
  Cumulative effect of accounting changes..........................................         150          --         --
  Depreciation, depletion and amortization.........................................          22          66         68
  Postretirement expense...........................................................           4          --         --
  Interest expense on pay-in-kind debentures.......................................          17          74         63
  Deferred income taxes............................................................         (13)        (25)       (13)
  Net (gain)/loss on asset dispositions............................................           4          (5)        (3)
(Increase)/decrease in working capital:
  Receivables......................................................................          18          (1)       (16)
  Inventories......................................................................          (8)         (3)        (7)
  Payables.........................................................................           3          (4)       (14)
  Accrued expenses.................................................................          15         213        132
Increase in other assets...........................................................         (12)        (23)        (9)
  Changes due to reorganization items:
  Increase in reorganization items.................................................          65          --         --
  Net adjustments to fair market value.............................................        (759)         --         --
  Gain on discharge of prepetition liabilities.....................................        (944)         --         --
  Payment of liabilities net of collection of letters of credit....................          (7)         --         --
Decrease in other liabilities......................................................          --          (2)        (2)
Other, net.........................................................................          (3)         (9)        (9)
                                                                                     -----------  ---------  ---------
  Net cash flows (to)/from operating activities....................................         (14)         90         29
                                                                                     -----------  ---------  ---------
Cash Flows from Investing Activities:
Capital expenditures...............................................................         (12)        (49)       (49)
Net proceeds from asset dispositions...............................................          --           6          5
Net proceeds from divestiture of discontinued operations...........................          --          --         80
                                                                                     -----------  ---------  ---------
  Net cash flows (to)/from investing activities....................................         (12)        (43)        36
                                                                                     -----------  ---------  ---------
Cash Flows from Financing Activities:
Issuance of debt...................................................................           5          57         65
Repayment of debt..................................................................        (142)        (75)       (68)
(Increase)/decrease in restricted assets...........................................          32          (4)       (84)
                                                                                     -----------  ---------  ---------
  Net cash flows to financing activities...........................................        (105)        (22)       (87)
                                                                                     -----------  ---------  ---------
Net Cash Flows From Discontinued Operations........................................          --          --          2
                                                                                     -----------  ---------  ---------
Net Increase/(Decrease) in Cash and Cash Equivalents...............................        (131)         25        (20)
                                                                                     -----------  ---------  ---------
Cash and cash equivalents as of beginning of period................................         180         155        175
                                                                                     -----------  ---------  ---------
Cash and cash equivalents as of end of period......................................          49         180        155
                                                                                     -----------  ---------  ---------
                                                                                     -----------  ---------  ---------
Supplemental Cash Flow Disclosures:
Interest paid......................................................................   $      58   $      52  $     154
Income taxes paid..................................................................           3          13         15
                                                                                     -----------  ---------  ---------
                                                                                     -----------  ---------  ---------
</TABLE>

THE NOTES TO FINANCIAL STATEMENTS ON PAGES F-40 THROUGH F-71 ARE AN INTEGRAL
PART OF THIS STATEMENT.

                                      F-39
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                         NOTES TO FINANCIAL STATEMENTS

    (TERMS IN INITIAL CAPITAL LETTERS ARE DEFINED ELSEWHERE IN THIS PROSPECTUS)

PRINCIPLES OF CONSOLIDATION

    The   consolidated  financial   statements  include  the   accounts  of  the
Corporation and its subsidiaries after elimination of intercompany accounts  and
transactions.  Revenue is recognized upon the shipment of products. Net currency
translation gains or  losses on  foreign subsidiaries are  included in  deferred
currency  translation, a component of stockholders' equity, except for the years
ended December 31, 1992 and 1991, for which Mexican currency translation  losses
were  charged  to  earnings.  Purchased  goodwill,  which  was  written  off  in
accordance with the  implementation of  fresh start  accounting, was  previously
being  amortized over a  period of 40  years. See "Fresh  Start Accounting" note
below for more information on the implementation of fresh start accounting.

    For purposes of the Consolidated Balance Sheet and Consolidated Statement of
Cash Flows, all  highly liquid investments  with a maturity  of three months  or
less at the time of purchase are considered to be cash equivalents.

FINANCIAL RESTRUCTURING

    On  May 6, 1993, the Corporation  completed a comprehensive restructuring of
its debt (the "Restructuring") through implementation of a "prepackaged" plan of
reorganization (the "Prepackaged Plan"). The provisions of the Prepackaged  Plan
were  agreed  upon in  principle with  all  committees and  certain institutions
representing  debt  subject   to  the   Restructuring  in   January  1993.   The
Corporation's Registration Statement (Registration No. 33-40136), which included
a Disclosure Statement and Proxy Statement -- Prospectus, was declared effective
by  the SEC  in February  1993. The  solicitation process  for approvals  of the
Prepackaged Plan was completed  on March 15, 1993.  The Corporation commenced  a
prepackaged Chapter 11 bankruptcy case in Delaware (IN RE: USG CORPORATION, Case
No.  93-300)  on  March  17,  1993, and  received  the  U.S.  Bankruptcy Court's
confirmation of the Prepackaged Plan on April 23, 1993. None of the subsidiaries
of the Corporation were part of this proceeding and there was no impact on trade
creditors of the  Corporation's subsidiaries.  Under the  Prepackaged Plan,  all
previously existing defaults were waived or cured.

    The  following summary  of the major  provisions of the  Prepackaged Plan is
qualified in  its  entirety  by  reference  to  the  more  detailed  information
appearing in the Disclosure Statement.

    (a)  The Prepackaged Plan provided for a one-for-50 reverse stock split (the
"Reverse Stock Split") which was effected immediately prior to the  distribution
of  new common stock (the "New Common  Stock") pursuant to the Prepackaged Plan.
On May 6, 1993, after  giving effect to the  Reverse Stock Split, the  following
distributions   were  made  to  holders  of  the  following  securities  of  the
Corporation:

         (i) For each  $1,000 principal  amount of 13  1/4% senior  subordinated
    debentures  due 2000  (the "Old Senior  Subordinated Debentures") (excluding
    accrued interest thereon,  which was cancelled),  the holder received  50.81
    shares of New Common Stock. As of May 6, 1993, the total principal amount of
    the Old Senior Subordinated Debentures was $600 million.

        (ii)  For  each  $1,000  principal  amount  of  16%  junior subordinated
    debentures due 2008  (the "Old Junior  Subordinated Debentures")  (excluding
    accrued  interest thereon, which  was cancelled), the  holder received 11.61
    shares of New Common Stock and 5.42  Warrants. As of May 6, 1993, the  total
    principal  amount of Old Junior Subordinated Debentures was $533 million, of
    which $480 million was subject to the distribution.

    Stockholders existing prior to the distribution of New Common Stock retained
their shares of common stock, subject  to the Reverse Stock Split. After  giving
effect  to the Reverse Stock  Split and distribution of  New Common Stock, there
were 37,157,458 shares of common stock outstanding on

                                      F-40
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
May 6, 1993, of  which the shares  held by stockholders  existing prior to  such
distribution  represented 3% of  the total number of  outstanding shares. If all
Warrants were  exercised,  the aggregate  holdings  of Old  Senior  Subordinated
Debenture  holders,  Old Junior  Subordinated  Debenture holders  and previously
existing stockholders would  represent 76.7%, 20.6%  and 2.7%, respectively,  of
the total number of outstanding shares.

    (b)  For each $1,000 principal  amount of 7 3/8%  senior notes due 1991 (the
"Old Senior 1991 Notes"), the holder received $750 principal amount of 8% senior
notes due 1995 (the "Senior 1995 Notes") and $250 principal amount of 9%  senior
notes due 1998 (the "Senior 1998 Notes"). As of May 6, 1993, the total principal
amount  of  the  Old  Senior  1991 Notes  was  $100  million.  In  addition, the
Corporation issued $10  million principal  amount of  Senior 1998  Notes to  two
institutional  holders of  existing 8% senior  notes due 1996  (the "Senior 1996
Notes") in exchange for an equal  principal amount thereof. The Senior 1995  and
1998  Notes are secured, with certain  other indebtedness of the Corporation and
subject to a collateral trust arrangement controlled primarily by holders of the
Banks' claims, by  first priority  security interests  in the  capital stock  of
certain subsidiaries of the Corporation.

    (c)  Pursuant to the  Prepackaged Plan, modifications were  made to a credit
agreement dated as of July  1, 1988 (the "Old  Credit Agreement") with the  Bank
Group.  The modifications, reflected in the  Credit Agreement, are summarized as
follows: (i) issuance of $340 million of Senior 2002 Notes in exchange for  $300
million  principal amount of Bank Term Loans,  $24 million of accrued but unpaid
interest on the Bank Term Loan and  $16 million owed in connection with  certain
interest  rate  swap contracts;  (ii)  extension of  the  final maturity  of the
remaining principal outstanding on the Bank  Term Loan ($540 million) from  1996
to  2000 and deferral  of any scheduled principal  payments until December 1994;
(iii) issuance  of $56  million  of Capitalized  Interest Notes  bearing  annual
interest  at LIBOR plus 2 1/4% (or Citibank's base rate plus 1 1/4%) in exchange
for $51 million of accrued but unpaid  interest on the Bank Debt and $5  million
in additional amounts owed in connection with interest rate swap contracts; (iv)
making available (at the Corporation's option but subject to certain limitations
on  the availability of  LIBOR) an annual  interest rate applicable  to the Bank
Term Loan and an  extended revolving credit  facility of LIBOR  plus 1 7/8%  (or
Citibank's base rate plus 7/8%), with the option to issue additional Capitalized
Interest  Notes for the amount  of such interest in excess  of LIBOR plus 1% per
annum; (v) provision for an excess cash  flow sweep that will take into  account
certain liquidity thresholds; (vi) suspension of all financial covenants through
January  1, 1995 and providing for new covenants thereafter; and (vii) extension
to 1998  of  the maturity  date  of and  establishment  of a  maximum  borrowing
capacity  of $175 million under the  Revolving Credit Facility, including a $110
million letter of credit subfacility. Capitalized Interest Notes of $47  million
were allocated as term capitalized interest notes maturing in 2000, being direct
obligations of the Corporation, and $9 million of the Capitalized Interest Notes
were  allocated as revolver  capitalized interest notes  maturing in 1998, being
direct obligations of USG Interiors.

    The Corporation deferred certain principal and interest payments in order to
maintain adequate  liquidity during  the  Restructuring process.  These  payment
deferrals   constituted  defaults  under  the  applicable  loan  agreements  and
indentures, which were waived or cured on May 6, 1993.

FRESH START ACCOUNTING

    The Corporation  accounted for  the Restructuring  using the  principles  of
fresh  start accounting as required by SOP 90-7. Pursuant to such principles, in
general, the Corporation's  assets and liabilities  were revalued. Total  assets
were  stated  at  the  reorganization value  of  the  Corporation  following the
Restructuring.  The  Corporation   primarily  used  "net   present  value"   and
"comparable   companies"  approaches  to  determine  reorganization  value  (the
"Reorganization  Value").  In  the   net  present  value  approach,   projected,
unleveraged  after-tax cash flows  of the Subsidiaries  and corporate operations

                                      F-41
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
through 1995 were discounted at  rates approximating the Corporation's  adjusted
weighted  average cost of capital. Terminal value was determined by capitalizing
the 1995 projected results.  Liabilities were stated at  fair market value.  The
difference  between the Reorganization  Value of the assets  and the fair market
value of  the liabilities  was recorded  as stockholders'  equity with  retained
earnings restated to zero.

    In accordance with SOP 90-7, individual assets and liabilities were adjusted
to  fair market value as of May 6, 1993. The portion of the Reorganization Value
not attributable  to specific  assets ("Excess  Reorganization Value")  will  be
amortized  over  a five  year period.  Adjustments were  made to  the historical
balances of  inventory,  property,  plant  and  equipment,  purchased  goodwill,
long-term debt, various accrued liabilities and other long-term liabilities.

                                      F-42
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    The following balance sheet details the adjustments that were made as of May
6, 1993 to record the Restructuring and implement fresh start accounting:

                           CONSOLIDATED BALANCE SHEET

                               AS OF MAY 6, 1993
                             (DOLLARS IN MILLIONS)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                PRE-                                        POST-
                                                            RESTRUCTURING       (A)           (B)       RESTRUCTURING
                                                              AND FRESH    RESTRUCTURING  FRESH START     AND FRESH
                                                                START       ADJUSTMENTS   ADJUSTMENTS       START
                                                            -------------  -------------  ------------  -------------
<S>                                                         <C>            <C>            <C>           <C>
Current Assets:
Cash and cash equivalents.................................    $     153      $    (104)    $       --     $      49
Receivables, net..........................................          281             35             (1)          315
Inventories...............................................          122             --             26           148
Restricted cash...........................................           99            (99)            --            --
                                                            -------------  -------------  ------------  -------------
  Total current assets....................................          655           (168)            25           512
Property, Plant and Equipment, Net........................          792             --            (25)          767
Purchased Goodwill, Net...................................           69             --            (69)           --
Excess Reorganization Value...............................           --             --            851           851
Other Assets..............................................           65             (1)            --            64
                                                            -------------  -------------  ------------  -------------
  Total assets............................................        1,581           (169)           782         2,194
                                                            -------------  -------------  ------------  -------------
                                                            -------------  -------------  ------------  -------------
                                        LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
Accounts payable..........................................    $      96      $      --     $       --     $      96
Accrued expenses..........................................          203            (28)            (4)          171
Notes payable.............................................            6             --             --             6
Revolving Credit Facility.................................          140           (140)            --            --
Long-term debt maturing within one year...................            9             --             --             9
Long-term debt classified as current......................          427           (427)            --            --
Taxes on income...........................................           17             --             (4)           13
                                                            -------------  -------------  ------------  -------------
  Total current liabilities...............................          898           (595)            (8)          295
                                                            -------------  -------------  ------------  -------------
Long-Term Debt............................................           67          1,473            (94)        1,446
Deferred Income Taxes.....................................          111             24             35           170
Other Liabilities.........................................          194             --             85           279
Liabilities Subject to Compromise.........................        2,458         (2,458)            --            --
Stockholders' Equity/(Deficit):
Preferred stock...........................................           --             --             --            --
Common stock..............................................            5             (1)            --             4
Capital received in excess of par value...................           23            444           (467)           --
Deferred currency translation.............................           (7)            --              7            --
Reinvested earnings/(deficit).............................       (2,168)           944          1,224            --
                                                            -------------  -------------  ------------  -------------
  Total stockholders' equity/(deficit)....................       (2,147)         1,387            764             4
                                                            -------------  -------------  ------------  -------------
  Total liabilities and stockholders' equity..............        1,581           (169)           782         2,194
                                                            -------------  -------------  ------------  -------------
                                                            -------------  -------------  ------------  -------------
</TABLE>

- ------------------------
(a)  To  record  the  consummation  of  the  Prepackaged  Plan.  See  "Financial
    Restructuring" note above  for a  summary of  the terms  of the  Prepackaged
    Plan.

(b) To record the adjustments to state assets and liabilities at their estimated
    fair market value, including establishment of Excess Reorganization Value.

                                      F-43
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

REORGANIZATION ITEMS

    In  connection with the  Restructuring, the Corporation  recorded a one-time
reorganization items gain of $709 million in the period of January 1 through May
6, 1993. The (income)/expense components of this gain are as follows (dollars in
millions):

<TABLE>
<CAPTION>
                                                                                     JANUARY 1
                                                                                      THROUGH
                                                                                      MAY 6,
                                                                                       1993
                                                                                    -----------
<S>                                                                                 <C>
Excess Reorganization Value.......................................................   $    (851)
Other fresh start adjustments.....................................................          63
Restructuring fees and expenses...................................................          57
Write-off of 1988 capitalized financing costs.....................................          22
                                                                                    -----------
Total reorganization items........................................................        (709)
                                                                                    -----------
                                                                                    -----------
</TABLE>

EXTRAORDINARY GAIN

    Also in  connection  with  the Restructuring,  the  Corporation  recorded  a
one-time after-tax extraordinary gain of $944 million in the period of January 1
through May 6, 1993. The income/(expense) components of this gain are as follows
(dollars in millions):

<TABLE>
<CAPTION>
                                                                                     JANUARY 1
                                                                                      THROUGH
                                                                                      MAY 6,
                                                                                       1993
                                                                                    -----------
<S>                                                                                 <C>
Gain on exchange of the Old Senior Subordinated Debentures for stock..............   $     477
Gain on exchange of the Old Junior Subordinated Debentures for stock and
 warrants.........................................................................         456
Write-off of bank debt default interest...........................................          49
Tax provision.....................................................................         (24)
Management incentive compensation.................................................         (13)
Other.............................................................................          (1)
                                                                                    -----------
Total extraordinary items.........................................................         944
                                                                                    -----------
                                                                                    -----------
</TABLE>

CUMULATIVE EFFECT OF CHANGES IN ACCOUNTING PRINCIPLES

    A  one-time  after-tax charge  of  $150 million  was  recorded in  the first
quarter of 1993 representing the  adoption of Statement of Financial  Accounting
Standard  ("SFAS") No.  106, "Employers' Accounting  for Postretirement Benefits
Other Than Pensions," -- $180 million, partially offset by the adoption of  SFAS
No.  109, "Accounting  for Income  Taxes," --  $30 million.  See "Postretirement
Benefits" and "Taxes on Income and Deferred Taxes" notes for information on  the
adoption of these standards. Neither of these standards impact cash flow.

DISCONTINUED OPERATIONS

    Results  for DAP are set forth  separately as discontinued operations in the
accompanying consolidated financial statements and supplementary data  schedules
up  to September 20, 1991,  the completion date of the  sale of the business and
substantially all of the assets. Operating results for DAP in 1991 included  net
sales of $128 million, taxes on income of $1 million and breakeven net earnings.

    In the second quarter of 1991, the Corporation absorbed an expense provision
of  $20 million  related to the  disposition of  DAP, net of  related income tax
expense of $8 million.  An expense provision  of $41 million,  net of a  related
income  tax benefit of $2 million, was previously recorded in the fourth quarter
of

                                      F-44
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
1990. Net proceeds from the  transaction amounted to approximately $84  million.
In  connection with the execution of the DAP sale agreement, the Banks consented
to the sale as required under the  Old Credit Agreement subject to an  agreement
by  the Corporation and DAP to deposit the proceeds in a bank account to be held
exclusively for use in the Restructuring. As a result, these funds, and interest
earned on these funds, were maintained on an interim basis in a restricted  bank
account and were classified as restricted cash in the Consolidated Balance Sheet
until their release in connection with the Restructuring.

RESEARCH AND DEVELOPMENT

    Research  and development expenditures  are charged to  earnings as incurred
and amounted to $4 million, $14 million and $12 million in the period of January
1 through  May 6,  1993 and  in  the years  ended December  31, 1992  and  1991,
respectively.

TAXES ON INCOME AND DEFERRED INCOME TAXES

    Effective January 1, 1993, the Corporation adopted SFAS No. 109, "Accounting
for  Income Taxes." The cumulative effect as of January 1, 1993 of adopting SFAS
No. 109  was a  one-time  benefit to  first quarter  1993  net earnings  of  $30
million,  primarily due to  adjusting deferred taxes  from historical to current
tax rates. Financial statements  for periods prior to  January 1, 1993 have  not
been restated to reflect the adoption of this standard.

    Earnings/(loss)   from  continuing   operations  before   taxes  on  income,
extraordinary gain  and  changes  in  accounting  principles  consisted  of  the
following (dollars in millions):

<TABLE>
<CAPTION>
                                                                  JANUARY 1   YEARS ENDED DECEMBER
                                                                   THROUGH            31,
                                                                   MAY 6,     --------------------
                                                                    1993        1992       1991
                                                                 -----------  ---------  ---------
<S>                                                              <C>          <C>        <C>
U.S............................................................   $     483   $    (246) $    (217)
Foreign........................................................         174          22         23
                                                                 -----------  ---------  ---------
Total..........................................................         657        (224)      (194)
                                                                 -----------  ---------  ---------
                                                                 -----------  ---------  ---------
</TABLE>

    Taxes  on income/(income tax benefit) consisted of the following (dollars in
millions):

<TABLE>
<CAPTION>
                                                                  JANUARY 1   YEARS ENDED DECEMBER
                                                                   THROUGH            31,
                                                                   MAY 6,     --------------------
                                                                    1993        1992       1991
                                                                 -----------  ---------  ---------
<S>                                                              <C>          <C>        <C>
Current:
  U.S. Federal.................................................   $      13   $     (12) $     (53)
  Foreign......................................................           2           6         12
                                                                 -----------  ---------  ---------
                                                                         15          (6)       (41)
                                                                 -----------  ---------  ---------
Deferred:
  U.S. Federal.................................................          --         (27)       (11)
  Foreign......................................................           2          --         (1)
                                                                 -----------  ---------  ---------
                                                                          2         (27)       (12)
                                                                 -----------  ---------  ---------
Total..........................................................          17         (33)       (53)
                                                                 -----------  ---------  ---------
                                                                 -----------  ---------  ---------
</TABLE>

                                      F-45
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    The difference between the statutory U.S. Federal income tax/(benefit)  rate
and  the  Corporation's effective  income  tax/(benefit) rate  is  summarized as
follows:

<TABLE>
<CAPTION>
                                                               JANUARY 1    YEARS ENDED DECEMBER 31,
                                                                THROUGH
                                                                MAY 6,      ------------------------
                                                                 1993          1992         1991
                                                             -------------  -----------  -----------
<S>                                                          <C>            <C>          <C>
Statutory U.S. Federal income tax/(benefit) rate...........        34.0%       (34.0 )%     (34.0 )%
Nontaxable effects of adopting fresh start accounting......       (41.4)           --        --
Capitalized restructuring fees.............................          2.0           --           --
Foreign tax rate differential..............................          1.3          7.7          8.3
Valuation allowance adjustment.............................          2.3           --           --
Unbenefited NOL Carryforward...............................          2.3         12.6           --
Other, net.................................................          2.1         (1.3  )      (1.8  )
                                                                   -----        -----        -----
Effective income tax/(benefit) rate........................          2.6        (15.0  )     (27.5  )
                                                                   -----        -----        -----
                                                                   -----        -----        -----
</TABLE>

    Temporary differences  and  carryforwards which  give  rise to  current  and
long-term  deferred tax (assets)/liabilities  as of May 6,  1993 were as follows
(dollars in millions):

<TABLE>
<CAPTION>
                                                                                          AS OF
                                                                                         MAY 6,
                                                                                          1993
                                                                                       -----------
<S>                                                                                    <C>
Property, plant and equipment........................................................   $     148
Debt discount........................................................................          32
                                                                                       -----------
Deferred tax liabilities.............................................................         180
                                                                                       -----------
Pension and retiree medical benefits.................................................         (85)
Reserves not deductible until paid...................................................         (47)
Other................................................................................          (2)
                                                                                       -----------
Deferred tax assets before valuation allowance.......................................        (134)
Valuation allowance..................................................................          85
                                                                                       -----------
Deferred tax assets..................................................................         (49)
                                                                                       -----------
Net deferred tax liabilities.........................................................         131
                                                                                       -----------
                                                                                       -----------
</TABLE>

    A valuation allowance has been provided for deferred tax assets relating  to
pension  and  retiree medical  benefits  due to  the  long-term nature  of their
realization. Because of the uncertainty regarding the application of the Code to
the Corporation's NOL  Carryforwards as  a result  of the  Prepackaged Plan,  no
deferred tax asset is recorded.

    The  Corporation has NOL  Carryforwards of $113  million remaining from 1992
after a reduction due to cancellation of indebtedness from the Prepackaged Plan.
These NOL Carryforwards may be used to offset U.S. taxable income through  2007.
The Code will limit the Corporation's annual use of its NOL Carryforwards to the
lesser  of its taxable income or approximately $30 million plus any unused limit
from prior years. Furthermore, due to the uncertainty regarding the  application
of  the  Code  to  the  exchange  of  stock  for  debt,  the  Corporation's  NOL
Carryforwards could be further reduced or  eliminated. The Corporation has a  $3
million  minimum  tax  credit which  may  be  used to  offset  U.S.  regular tax
liability in future years.

                                      F-46
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    During 1991  and 1992,  deferred income  taxes resulted  from certain  items
being  treated differently for financial reporting  purposes than for income tax
purposes. The tax effect of such  differences is summarized as follows  (dollars
in millions):

<TABLE>
<CAPTION>
                                                                                YEARS ENDED DECEMBER
                                                                                        31,
                                                                                --------------------
                                                                                  1992       1991
                                                                                ---------  ---------
<S>                                                                             <C>        <C>
Tax benefit carryforwards.....................................................  $     (19) $      (9)
Accelerated tax depreciation..................................................         (5)        --
Other, net....................................................................         (3)        (3)
                                                                                      ---        ---
Total deferred provision......................................................        (27)       (12)
Classification adjustment of prior years' deferrals...........................          2         (1)
                                                                                      ---        ---
Increase/(decrease) in deferred taxes.........................................        (25)       (13)
                                                                                      ---        ---
                                                                                      ---        ---
</TABLE>

    The  Corporation  does not  provide  for U.S.  Federal  income taxes  on the
portion of undistributed earnings of foreign subsidiaries which are intended  to
be  permanently reinvested. The cumulative amount of such undistributed earnings
totaled approximately $75 million as of May 6, 1993. Any future repatriation  of
undistributed  earnings  would  not, in  the  opinion of  management,  result in
significant additional taxes.

INVENTORIES

    In accordance with the implementation of fresh start accounting, inventories
were stated at fair market  value as of May 6,  1993. Most of the  Corporation's
domestic  and Mexican inventories are valued under  the LIFO method.As of May 6,
1993, the LIFO values of these inventories were $103 million and would have been
the same if they were valued under the FIFO and average production cost methods.
Inventories valued under the LIFO method totaled $72 million as of December  31,
1992  and would have been $25 million higher  if they were valued under the FIFO
and average production cost  methods. The remaining  inventories as of  December
31,  1992 were stated at the lower of  cost or market, under the FIFO or average
production cost  methods. Inventories  include  material, labor  and  applicable
factory  overhead costs. Inventory  classifications were as  follows (dollars in
millions):

<TABLE>
<CAPTION>
                                                                                         AS OF
                                                                          AS OF      DECEMBER 31,
                                                                       MAY 6, 1993       1992
                                                                       -----------  ---------------
<S>                                                                    <C>          <C>
Finished goods and work-in-process...................................   $      87      $      66
Raw materials........................................................          54             40
Supplies.............................................................           7              7
                                                                            -----          -----
Total................................................................         148            113
                                                                            -----          -----
                                                                            -----          -----
</TABLE>

    The LIFO value  of U.S.  domestic inventories under  fresh start  accounting
exceeded that computed for U.S. Federal income tax purposes by $26 million as of
May  6,  1993.  As  of December  31,  1992,  the LIFO  value  of  USG Interiors'
inventories acquired under the purchase  method exceeded that computed for  U.S.
Federal income tax purposes by $6 million.

PROPERTY, PLANT AND EQUIPMENT

    Property,  plant and equipment were stated at fair market value as of May 6,
1993 in accordance with fresh  start accounting and at  cost as of December  31,
1992.  Provisions for depreciation are determined principally on a straight-line
basis over  the  expected  average  useful  lives  of  composite  asset  groups.
Depletion  is computed on  a basis calculated  to spread the  cost of gypsum and
other applicable

                                      F-47
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
resources over the estimated quantities of material recoverable. Interest during
construction is capitalized  on major  property additions.  Property, plant  and
equipment classifications were as follows (dollars in millions):

<TABLE>
<CAPTION>
                                                                          AS OF         AS OF
                                                                         MAY 6,      DECEMBER 31,
                                                                          1993           1992
                                                                       -----------  --------------
<S>                                                                    <C>          <C>
Land and mineral deposits............................................   $      61     $       41
Buildings and realty improvements....................................         228            401
Machinery and equipment..............................................         478          1,012
                                                                            -----        -------
                                                                              767          1,454
Reserves for depreciation and depletion..............................          --           (654)
                                                                            -----        -------
Total................................................................         767            800
                                                                            -----        -------
                                                                            -----        -------
</TABLE>

LEASES

    The  Corporation  leases certain  of its  offices, buildings,  machinery and
equipment, and autos  under noncancellable operating  leases. These leases  have
various  terms and renewal  options. Lease expense amounted  to $11 million, $31
million and $26 million in  the period of January 1  through May 6, 1993 and  in
the years ended December 31, 1992 and 1991, respectively.

                                      F-48
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

INDEBTEDNESS

    Total  debt, including currently  maturing debt, consisted  of the following
(dollars in millions):

<TABLE>
<CAPTION>
                                                                        AS OF        AS OF
                                                                       MAY 6,     DECEMBER 31,
                                                                        1993          1992
                                                                      ---------  --------------
<S>                                                                   <C>        <C>
SECURED DEBT:
Bank Debt:
  Bank Term Loan, installments due through 2000.....................  $     540    $      840
  Revolving Credit Facility.........................................         --           140
  Capitalized Interest Notes, due through 2000......................         56            --
Senior notes and debentures:
  7 3/8% Senior Notes due 1991......................................         --           100
  8% Senior Notes due 1995..........................................         75            --
  8% Senior Notes due 1996..........................................         90           100
  8% Senior Notes due 1997..........................................        100           100
  9% Senior Notes due 1998..........................................         35            --
  10 1/4% Senior Notes due 2002.....................................        340            --
  7 7/8% Sinking Fund Debentures due 2004...........................         41            41
  8 3/4% Sinking Fund Debentures due 2017...........................        200           200
Other secured debt, average interest rates, 10.5% and 10.9%, varying
 payments through 1999..............................................         40            37
UNSECURED DEBT:
Industrial revenue bonds, 5.9% ranging to 10.25%, due through
 2014...............................................................         39            38
Old Subordinated Debentures:
  13 1/4% Senior Subordinated Debentures due 2000, sinking fund of
   $300 million due 1999............................................         --           600
  16% Junior Subordinated Debentures due 2008, sinking fund
   commencing 2004..................................................         --           515
                                                                      ---------       -------
Total principal amount of debt......................................      1,556         2,711
Less unamortized reorganization discount............................        (95)           --
                                                                      ---------       -------
Total carrying amount of debt.......................................      1,461         2,711
                                                                      ---------       -------
                                                                      ---------       -------
</TABLE>

    As of May 6, 1993, the  Corporation and its subsidiaries had $1,556  million
total principal amount of debt (before unamortized reorganization discount) on a
consolidated  basis.  Of  such  total  debt,  $118  million  represented  direct
borrowings by  the subsidiaries,  including $38  million of  industrial  revenue
bonds,  $41 million of 7  7/8% sinking fund debentures  issued by U.S. Gypsum in
1974 and subsequently assumed by the Corporation on a joint and several basis in
1985, $33  million  of  debt  (primarily  project  financing)  incurred  by  the
Corporation's foreign subsidiaries other than CGC, $4 million of working capital
borrowings by CGC, and $3 million of other long-term borrowings by CGC.

    Throughout  the Restructuring process (from December 31, 1990 through May 6,
1993), most long-term debt  issues were included in  current liabilities due  to
various  defaults upon certain of the debt issues which allowed for the possible
triggering of acceleration and cross-acceleration provisions. Upon  consummation
of  the Prepackaged Plan, all previously  existing defaults were waived or cured
and long-term debt  included in  current liabilities was  treated in  accordance
with the Prepackaged Plan as described in "Financial Restructuring" note above.

                                      F-49
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    The  Bank Debt and most other senior debt  are secured by a pledge of all of
the shares  of the  Corporation's major  domestic subsidiaries  and 65%  of  the
shares  of certain  of its  foreign subsidiaries,  including CGC,  pursuant to a
collateral trust arrangement controlled primarily  by holders of the Bank  Debt.
The  rights of the Corporation and its creditors to the assets of any subsidiary
upon the latter's  liquidation or reorganization  will be subject  to the  prior
claims of such subsidiary's creditors, except to the extent that the Corporation
may  itself be a  creditor with enforceable claims  against such subsidiary. The
average rate of interest on the Bank Term Loan, excluding default interest which
was cured or waived  in accordance with  the Prepackaged Plan,  was 6.5% in  the
period of January 1 through May 6, 1993. The rate of interest on the Capitalized
Interest  Notes issued on May  6, 1993 in connection  with the provisions of the
Prepackaged Plan was 5.4% based on LIBOR plus 2 1/4%.

    The "Other  Secured  Debt"  category  shown in  the  table  above  primarily
includes  short-term and long-term borrowings from  several foreign banks by USG
International used principally to finance  construction of the Aubange,  Belgium
ceiling  tile plant. This debt is secured by a lien on the assets of the Aubange
plant and  has restrictive  covenants  that restrict,  among other  things,  the
payment of dividends. Foreign borrowings made by the Corporation's international
operations are generally allowed, within certain limits, under provisions of the
Credit Agreement.

    In  general,  the  Credit  Agreement  restricts,  among  other  things,  the
incurrence of additional indebtedness, mergers, asset dispositions, investments,
prepayment of  other  debt,  dealings  with  affiliates,  capital  expenditures,
payment of dividends and lease commitments.

    The fair market value of debt as of May 6, 1993 was $1,421 million, based on
estimates  of fair market value calculated  in connection with implementation of
fresh start  accounting, excluding  other secured  debt, primarily  representing
financing for construction of the Aubange plant that is secured by a direct lien
on  its assets, which was not practicable  to estimate. As of December 31, 1992,
the fair market value of debt amounted to $679 million, based on indicative bond
prices as of that date excluding the following items which were not  practicable
to  estimate: (i) the bank  debt for which there was  no active market; (ii) the
7 7/8% senior debentures due 2004 virtually all of which were owned by a  single
investment  group; and (iii) the other  secured debt which primarily represented
financing for construction of the Aubange plant as described above.

PENSION PLANS

    The Corporation and most of its subsidiaries have defined benefit retirement
plans for all eligible employees. Benefits  of the plans are generally based  on
years   of  service  and  employees'  compensation  during  the  last  years  of
employment.  The  Corporation's  contributions  are  made  in  accordance   with
independent actuarial reports which, for most plans, required minimal funding in
the  period of January  1 through May 6,  1993 and the  years ended December 31,
1992 and 1991. Net pension  expense/(benefit) included the following  components
(dollars in millions):

<TABLE>
<CAPTION>
                                                      JANUARY 1
                                                       THROUGH        YEARS ENDED DECEMBER 31,
                                                       MAY 6,     --------------------------------
                                                        1993           1992             1991
                                                     -----------  ---------------  ---------------
<S>                                                  <C>          <C>              <C>
Service cost-benefits earned during the period.....   $       3      $       9        $       5
Interest cost on projected benefit obligation......          11             29               29
Actual return on plan assets.......................         (15)           (14)             (79)
Unrecognized prior service cost....................           1              2                2
Net amortization/(deferral)........................           2            (25)              41
                                                          -----          -----            -----
Net pension expense/(benefit)......................           2              1               (2)
                                                          -----          -----            -----
                                                          -----          -----            -----
</TABLE>

                                      F-50
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    The  pension plan assets, which consist  primarily of publicly traded common
stocks and debt securities, had an estimated fair market value that equaled  the
projected  benefit  obligation as  of  May 6,  1993  and exceeded  the projected
benefit obligation  as of  December 31,  1992. The  following table  presents  a
reconciliation of the total assets of the pension plans to the projected benefit
obligation (dollars in millions):

<TABLE>
<CAPTION>
                                                                       As of           As of
                                                                      May 6,       December 31,
                                                                       1993            1992
                                                                   -------------  ---------------
<S>                                                                <C>            <C>
Amount of assets available for benefits:
  Funded assets of the plans at fair market value................    $     379       $     383
  Accrued pension expense........................................           25              15
                                                                         -----           -----
Total assets of the plans........................................          404             398
                                                                         -----           -----
Present value of estimated pension obligation:
  Vested benefits................................................          298             252
  Nonvested benefits.............................................           24              18
                                                                         -----           -----
Accumulated benefit obligation...................................          322             270
Additional benefits based on projected future salary increases...           82              66
                                                                         -----           -----
Projected benefit obligation.....................................          404             336
                                                                         -----           -----
Assets in excess of projected benefit obligation.................           --              62
                                                                         -----           -----
                                                                         -----           -----
</TABLE>

    Assets  in excess of projected benefit obligation consisted of the following
(dollars in millions):

<TABLE>
<CAPTION>
                                                                       As of           As of
                                                                      May 6,       December 31,
                                                                       1993            1992
                                                                   -------------  ---------------
<S>                                                                <C>            <C>
Net assets existing at the date of adoption of SFAS No. 87 not
 yet recognized..................................................    $      --       $      32
Unrecognized net gain due to changes in assumptions and
 differences between actual and estimated experience.............           --              43
Unrecognized cost of retroactive benefits granted by plan
 amendments......................................................           --             (13)
                                                                         -----           -----
Assets in excess of projected benefit obligation.................           --              62
                                                                         -----           -----
                                                                         -----           -----
</TABLE>

    The expected long-term rate  of return on  plan assets was  9% for both  the
period  of January 1 through  May 6, 1993 and the  year ended December 31, 1992.
The assumed weighted average discount  rate used in determining the  accumulated
benefit  obligation was  8% and  9% as  of May  6, 1993  and December  31, 1992,
respectively. The rate of increases in projected future compensation levels  was
5.5% for the period of January 1 through May 6, 1993 and the year ended December
31,  1992.  The  unrecognized  cost  of  retroactive  benefits  granted  by plan
amendments was being amortized over 13 years as of December 31, 1992.

POSTRETIREMENT BENEFITS

    The Corporation maintains plans  that provide retiree  health care and  life
insurance  benefits  for  all  eligible  employees.  Employees  generally become
eligible for the retiree benefit plans when they meet minimum retirement age and
service requirements. The  cost of providing  most of these  benefits is  shared
with retirees.

                                      F-51
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    Effective January 1, 1993, the Corporation adopted SFAS No. 106, "Employers'
Accounting  for Postretirement  Benefits Other  Than Pensions,"  for its retiree
benefit plans. Under this  accounting standard, the  Corporation is required  to
accrue  the estimated cost of retiree  benefit payments during employees' active
service period. The Corporation elected  to recognize this change in  accounting
principles  on  the immediate  recognition basis.  The  cumulative effect  as of
January 1, 1993  of adopting SFAS  No. 106  was a one-time  after-tax charge  to
first  quarter 1993  net earnings  of $180  million. The  Corporation previously
expensed the cost of these benefits, which principally relate to health care, as
claims were incurred. These costs  were $8 million and  $7 million in the  years
ended December 31, 1992 and 1991, respectively.

    The following table summarizes the components of net periodic postretirement
benefit  cost  for the  period  of January  1 through  May  6, 1993  (dollars in
millions):

<TABLE>
<CAPTION>
                                                                                     JANUARY 1
                                                                                      THROUGH
                                                                                      MAY 6,
                                                                                       1993
                                                                                  ---------------
<S>                                                                               <C>
Service cost of benefits earned.................................................     $       1
Interest on accumulated postretirement benefit obligation.......................             5
                                                                                           ---
Net periodic postretirement benefit cost........................................             6
                                                                                           ---
                                                                                           ---
</TABLE>

    The status of the  Corporation's accrued postretirement  benefit cost as  of
May 6, 1993 was as follows (dollars in millions):

<TABLE>
<CAPTION>
                                                                                          As of
                                                                                         May 6,
                                                                                          1993
                                                                                       -----------
<S>                                                                                    <C>
Accumulated postretirement benefit obligation:
  Retirees...........................................................................   $     118
  Fully eligible active participants.................................................          13
  Other active participants..........................................................          62
                                                                                       -----------
Accrued postretirement benefit cost liability recognized on the Consolidated Balance
 Sheet...............................................................................   $     193
                                                                                       -----------
                                                                                       -----------
</TABLE>

    The  assumed health care  cost trend rate used  in measuring the accumulated
postretirement benefit obligation  was 13% as  of May 6,  1993 with a  gradually
declining  rate to 6% by the year 2000 and remaining at that level thereafter. A
one-percentage-point increase in  the assumed  health care cost  trend rate  for
each year would increase the accumulated postretirement benefit obligation as of
May  6, 1993 by $18 million and increase the net periodic postretirement benefit
cost for the period of January 1 through May 6, 1993 by $1 million. The  assumed
discount  rate  used  in  determining  the  accumulated  postretirement  benefit
obligation was 8%.

MANAGEMENT PERFORMANCE PLAN

    The Performance Plan reserved 8,600,000 shares of common stock for  issuance
in  connection  with  grants  of  incentive  stock  options,  nonqualified stock
options,  stock   appreciation  rights,   restricted  stock,   deferred   stock,
performance shares and performance units.

    In  accordance with the Prepackaged Plan, all outstanding stock options (for
3,786,575 shares)  were cancelled  without  consideration, 1,016,090  shares  of
restricted  and deferred stock  were cashed-out pursuant  to "change in control"
provisions  contained  in  the  Performance  Plan,  and  25,580  shares   (after

                                      F-52
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
giving  effect to the  Reverse Stock Split)  of restricted stock  and awards for
deferred stock yet to be issued remained outstanding as a consequence of certain
waivers of the change in control event by senior members of management.

    Limitations on the Performance Plan in accordance with the Prepackaged  Plan
provide  that: (i) options to purchase a number  of shares not to exceed 7.5% of
the number of shares  of New Common Stock  outstanding immediately after  giving
effect  to the  Reverse Stock  Split and all  distributions of  New Common Stock
under the Prepackaged Plan will be reserved for management incentives (2,788,350
shares); (ii) a portion of  such options (not to exceed  4.5% of such number  of
outstanding  shares)  may  be  granted  immediately  upon  consummation  of  the
Prepackaged Plan; (iii) prior to June 22, 1997, the Corporation will not  issue,
award  or grant, for compensatory purposes,  any stock (including restricted and
deferred stock grants and awards),  stock options, stock appreciation rights  or
other  stock-based  awards, except  for the  options described  above or  as may
otherwise be approved by the  Corporation's stockholders; and (iv) reference  to
the year "1988" is deleted from the name of the Performance Plan.

PREFERRED SHARE PURCHASE RIGHTS

    On  June 6, 1988, the Corporation  adopted a Preferred Share Purchase Rights
Plan and pursuant to its provisions declared, subject to the consummation of the
1988 Recapitalization, the  distribution of  one Right  upon each  new share  of
common  stock  issued in  the 1988  Recapitalization. The  1988 Recapitalization
became  effective  July  13,1988  and  the  distribution  occurred   immediately
thereafter.  The  Rights  contain  provisions  which  are  intended  to  protect
stockholders in the event of an unsolicited attempt to acquire the Corporation.

    The Preferred Share Purchase Rights  Plan was terminated in connection  with
implementation of the Prepackaged Plan. On May 6, 1993, the Rights Agreement was
adopted with provisions substantially similar to the old rights except that: (i)
the  purchase price of the  Rights was reset; (ii)  the expiration of the Rights
was extended;  (iii) a  so-called  "flip-in" feature  and exchange  feature  was
added;  (iv) certain exemptions  were added permitting  certain acquisitions and
the continued holding  of common shares  by Water Street  and its affiliates  in
excess  of  the otherwise  specified thresholds;  (v)  the redemption  price was
reduced; and (vi) the amendment provision was liberalized.

    Under the terms of  the Rights Agreement and  subject to certain  exceptions
for Water Street and its affiliates, generally the Rights become exercisable (i)
10  days following the date  of a public announcement that  a person or group of
affiliated or  associated  persons  (an  "Acquiring  Person"),  other  than  the
Corporation,  any employee benefit  plan of the  Corporation, any entity holding
Common Stock  for or  pursuant to  the terms  of any  such plan  has  beneficial
ownership  (as  defined in  the Rights  Agreement) of  20% or  more of  the then
outstanding  Common  Stock,  (ii)  10  days  following  the  date  of  a  public
announcement  that a  person or  group of  affiliated or  associated persons (an
"Adverse  Person")  has  beneficial  ownership  of  10%  or  more  of  the  then
outstanding  Common Stock, the  acquisition of which has  been determined by the
Board to present  an actual  threat of an  acquisition of  the Corporation  that
would  not be in the best interest of the Corporation's stockholders or (iii) 10
days following the date of commencement of, or public announcement of, a  tender
offer  or exchange offer for 30% or  more of the Common Stock. When exercisable,
each of the Rights entitles the registered holder to purchase one-hundredth of a
share of a junior participating preferred  stock, series C, $1.00 par value  per
share,  at a price of $35.00 per  one-hundredth of a preferred share, subject to
adjustment.

    In the event that the Corporation  is the surviving corporation in a  merger
or other business combination involving an Acquiring Person or an Adverse Person
and  the Common Stock remains outstanding and  unchanged or in the event that an
Acquiring Person or an Adverse Person engages in one of a number of self-dealing
transactions specified in the Rights Agreement, proper provision will be made so
that each holder of  a Right, other  than Rights that  are or were  beneficially
owned (as defined in the Rights

                                      F-53
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
Agreement) by the Acquiring Person or the Adverse Person, as the case may be, on
the  earliest of the  Distribution Date, the date  the Acquiring Person acquires
20% or more  of the  outstanding Common  Stock or  the date  the Adverse  Person
becomes  such (which will thereafter be void), will thereafter have the right to
receive upon exercise  thereof that number  of shares of  Common Stock having  a
market  value at the time of such transaction of two times the exercise price of
the Right. In addition, under certain circumstances the Board has the option  of
exchanging all or part of the Rights (excluding void Rights) for Common Stock in
the manner described in the Rights Agreement. The Rights Agreement also contains
a  so-called "flip-in"  feature which  provides that if  any person  or group of
affiliated or associated persons becomes an Adverse Person, then the  provisions
of the preceding two sentences shall apply.

WARRANTS

    On  May 6, 1993, a total of 2,602,566 Warrants were issued to holders of the
Old Junior Subordinated  Debentures in addition  to the shares  of common  stock
issued  to such holders, all as provided by the Prepackaged Plan. Upon issuance,
each of the Warrants entitled the holder  to purchase one share of common  stock
at  a purchase price  of $16.14 per  share, subject to  adjustment under certain
events.

    The Warrants are exercisable, subject to applicable securities laws, at  any
time  prior to May 6, 1998. Each share of common stock issued upon exercise of a
Warrant prior to the Distribution Date (as defined in the Rights Agreement)  and
prior  to the redemption or  expiration of the Rights  will be accompanied by an
attached Right  issued under  the terms  and subject  to the  conditions of  the
Rights Agreement as it may then be in effect.

                                      F-54
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

STOCKHOLDERS' EQUITY

    Changes  in  stockholders'  equity  are summarized  as  follows  (dollars in
millions):

<TABLE>
<CAPTION>
                                                                        January 1   Years ended December 31,
                                                                         through
                                                                         May 6,     ------------------------
                                                                          1993         1992         1991
                                                                       -----------  -----------  -----------
<S>                                                                    <C>          <C>          <C>
COMMON STOCK:
Beginning Balance....................................................   $       5    $       5    $       5
Reverse Stock Split..................................................          (4)          --           --
Issuance of New Common Stock.........................................           3           --           --
                                                                       -----------  -----------  -----------
Ending Balance.......................................................           4            5            5
                                                                       -----------  -----------  -----------
CAPITAL RECEIVED IN EXCESS OF PAR VALUE:
Beginning Balance....................................................          23           24           23
Restructuring adjustments............................................         444           --           --
Fresh start accounting adjustment....................................        (467)          --           --
Other, net...........................................................          --           (1)           1
                                                                       -----------  -----------  -----------
Ending Balance.......................................................          --           23           24
                                                                       -----------  -----------  -----------
DEFERRED CURRENCY TRANSLATION:
Beginning Balance....................................................          (8)          --           --
Change during the period.............................................           1           (8)          --
Fresh start accounting adjustment....................................           7           --           --
                                                                       -----------  -----------  -----------
Ending Balance.......................................................          --           (8)          --
                                                                       -----------  -----------  -----------
REINVESTED EARNINGS/(DEFICIT):
Beginning Balance....................................................      (1,900)      (1,709)      (1,546)
Net earnings/(loss)..................................................       1,434         (191)        (161)
Fresh start accounting adjustment....................................         467           --           --
Other, net...........................................................          (1)          --           (2)
                                                                       -----------  -----------  -----------
Ending Balance.......................................................          --       (1,900)      (1,709)
                                                                       -----------  -----------  -----------
Total stockholders' equity/(deficit).................................           4       (1,880)      (1,680)
                                                                       -----------  -----------  -----------
                                                                       -----------  -----------  -----------
</TABLE>

    The Corporation is  authorized to issue  36,000,000 shares of  $1 par  value
preferred  stock, however, none were  outstanding as of May  6, 1993 or December
31, 1992.

    As of May 6, 1993,  the number of authorized  shares of common stock,  $0.10
par value, was 200,000,000 shares, reduced from 300,000,000 shares in accordance
with  the Prepackaged Plan. After  giving effect to the  Reverse Stock Split and
distribution of New Common  Stock pursuant to the  Prepackaged Plan, there  were
37,157,458  shares of common stock outstanding,  excluding 27,556 shares held in
treasury, as of  May 6, 1993.  As of  December 31, 1992,  there were  55,757,394
shares  of  common stock  outstanding, after  deducting  368,409 shares  held in
treasury. The treasury shares were acquired through the forfeiture of restricted
stock.

LITIGATION

    One of  the  Corporation's  subsidiaries, U.S.  Gypsum,  is  among  numerous
defendants   in  lawsuits   arising  out   of  the   manufacture  and   sale  of
asbestos-containing   building    materials.    U.S.   Gypsum    sold    certain
asbestos-containing products beginning in the 1930's; in most cases the products
were  discontinued or asbestos was removed from the product formula by 1972, and
no asbestos-containing

                                      F-55
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
products  were  sold  after  1977.  Some  of  these  lawsuits  seek  to  recover
compensatory  and  in  many cases  punitive  damages for  costs  associated with
maintenance or  removal and  replacement of  products containing  asbestos  (the
"Property  Damage Cases"). Others  of these suits  (the "Personal Injury Cases")
seek to recover  compensatory and in  many cases punitive  damages for  personal
injury  allegedly resulting  from exposure  to asbestos  and asbestos-containing
products. It is anticipated that additional personal injury and property  damage
cases containing similar allegations will be filed.

    As discussed below, U.S. Gypsum has substantial personal injury and property
damage  insurance for  the years involved  in the asbestos  litigation. Prior to
1985, when  an asbestos  exclusion was  added to  U.S. Gypsum's  policies,  U.S.
Gypsum  purchased  comprehensive general  liability insurance  policies covering
personal injury and property damage in an aggregate face amount of approximately
$850 million. Insurers that issued approximately $100 million of these  policies
are  presently  insolvent. Because  U.S.  Gypsum's insurance  carriers initially
responded to its claims  for defense and  indemnification with various  theories
denying  or  limiting coverage  and the  applicability  of their  policies, U.S.
Gypsum filed a declaratory judgment action against them in the Circuit Court  of
Cook  County,  Illinois  on  December  29, 1983.  (U.S.  GYPSUM  CO.  V. ADMIRAL
INSURANCE CO.,  ET AL.)  (the "Coverage  Action"). U.S.  Gypsum alleges  in  the
Coverage  Action that the carriers are  obligated to provide indemnification for
settlements and judgments  and, in some  cases, defense costs  incurred by  U.S.
Gypsum  in personal injury and property damage cases in which it is a defendant.
The current defendants  are ten insurance  carriers that provided  comprehensive
general liability insurance coverage to U.S. Gypsum between the 1940's and 1984.
As discussed below, several carriers have settled all or a portion of the claims
in the Coverage Action.

    U.S.  Gypsum's  aggregate  expenditures  for  all  asbestos-related matters,
including property damage,  personal injury, insurance  coverage litigation  and
related  expenses, exceeded  aggregate insurance  payments by  $10.9 million and
$25.8 million in the years ended  December 31, 1991 and 1992, respectively,  and
by $3.8 million in the period of January 1 through May 6, 1993.

PROPERTY DAMAGE CASES

    The Property Damage Cases have been brought against U.S. Gypsum by a variety
of plaintiffs, including school districts, state and local governments, colleges
and  universities, hospitals, and private property owners. U.S. Gypsum is one of
many defendants in  four cases  that have been  certified as  class actions  and
others  that request  such certification.  One class  action suit  is brought on
behalf of owners and  operators of all elementary  and secondary schools in  the
United  States that  contain or contained  friable asbestos-containing material.
(IN RE  ASBESTOS  SCHOOL LITIGATION,  U.S.D.C.,  E.D. Pa.)  Approximately  1,350
school  districts opted out of  the class, some of which  have filed or may file
separate lawsuits or are  participants in a state  court class action  involving
approximately  333 school districts in Michigan. (BOARD OF EDUCATION OF THE CITY
OF DETROIT, ET  AL. V. THE  CELOTEX CORP., ET  AL., Cir. Ct.  for Wayne  County,
Mich.)  On  April 10,  1992, a  state  court in  Philadelphia certified  a class
consisting of all owners of buildings leased to the federal government.  (PRINCE
GEORGE  CENTER,  INC.  V.  U.S.  GYPSUM  CO.,  ET  AL.,  Ct.  of  Common  Pleas,
Philadelphia, Pa.)  On September  4, 1992,  a Federal  district court  in  South
Carolina   conditionally  certified  a  class  comprised  of  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 December 23, 1992, a
case was filed in state court in  South Carolina purporting to be a  "voluntary"
class  action on behalf of  owners of all buildings  containing certain types of
asbestos-containing  products  manufactured  by   the  nine  named   defendants,
including  U.S.  Gypsum, other  than  buildings owned  by  the federal  or state
governments, single family residences, or buildings  at issue in the four  above
described  class actions (ANDERSON COUNTY HOSPITAL V.  W.R. GRACE & CO., ET AL.,
Court of Common Pleas, Hampton Co.,  S.C. (the "Anderson Case"). On January  14,
1993,  the  plaintiff  filed  an  amended  complaint  that  added  a  number  of
defendants, including the Corporation. The

                                      F-56
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
amended complaint alleges, among other  things, that the guarantees executed  by
U.S.  Gypsum in connection with the 1988 Recapitalization, as well as subsequent
distributions of cash from U.S. Gypsum to the Corporation, rendered U.S.  Gypsum
insolvent  and constitute a  fraudulent conveyance. The suit  seeks to set aside
the guarantees  and recover  the value  of the  cash flow  "diverted" from  U.S.
Gypsum  to the Corporation in an amount to be determined. This case has not been
certified as a class action and no other threshold issues, including whether the
South Carolina Courts have personal jurisdiction over the Corporation, have been
decided. The damages claimed against U.S.  Gypsum in the class action cases  are
unspecified.  U.S. Gypsum has denied the  substantive allegations of each of the
Property Damage  Cases  and  intends  to  defend  them  vigorously  except  when
advantageous settlements are possible.

    As  of  May 6,  1993, 67  Property  Damage Cases  were pending  against U.S.
Gypsum; however, the number of buildings involved is greater than the number  of
cases  because  many of  these cases,  including the  class actions  referred to
above, involve multiple buildings. Approximately 40 property damage claims  have
been threatened against U.S. Gypsum.

    In  total, U.S. Gypsum  has settled property  damage claims of approximately
187 plaintiffs involved in  approximately 71 cases.  Twenty-two cases have  been
tried  to verdict, 13  of which were  won by U.S.  Gypsum and 7  lost; two other
cases, one won  at the trial  level and  one lost, were  settled after  appeals.
Appeals  are pending in  4 of the  tried cases. In  the cases lost, compensatory
damage awards against U.S. Gypsum  have totaled $12.5 million. Punitive  damages
totaling  $5.5 million were entered  against U.S. Gypsum in  four trials. Two of
the punitive damage awards, totaling $1.45 million, were paid after appeals were
exhausted; a third  was settled after  the verdict was  reversed on appeal.  The
remaining punitive award is on appeal.

    In  1991, 13 new  Property Damage Cases  were filed against  U.S. Gypsum, 11
were dismissed before trial,  8 were settled, 2  were closed following trial  or
appeal, and 100 were pending at year end; U.S. Gypsum expended $22.2 million for
the  defense  and resolution  of Property  Damage  Cases and  received insurance
payments of $13.8 million  in 1991. In  1992, 7 new  Property Damage Cases  were
filed  against U.S. Gypsum, 10  were dismissed before trial,  18 were settled, 3
were closed following trial  or appeal, and  76 were pending  at year end.  U.S.
Gypsum  expended $34.9 million for the defense and resolution of Property Damage
Cases and received insurance payments of $10.2 million in 1992. In the period of
January 1 through May 6, 1993, no  new Property Damage Cases were filed  against
U.S.  Gypsum, 2 were dismissed before trial, 7 were settled, and 67 were pending
at the end of the period. U.S. Gypsum expended $7.0 million for the defense  and
resolution  of Property  Damage Cases  and received  insurance payments  of $3.7
million in the period.

    In the Property Damage Cases litigated to date, a defendant's liability  for
compensatory  damages, if any,  has been limited to  damages associated with the
presence and  quantity  of  asbestos-containing products  manufactured  by  that
defendant which are identified in the buildings at issue, although plaintiffs in
some  cases have  argued that principles  of joint and  several liability should
apply. Because of  the unique factors  inherent in each  of the Property  Damage
Cases,  including the lack of reliable  information as to product identification
and the amount of damages claimed  against U.S. Gypsum in many cases,  including
the  class actions  described above, management  is unable to  make a reasonable
estimate of the cost of disposing of pending Property Damage Cases.

                                      F-57
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

PERSONAL INJURY CASES

    U.S.  Gypsum was among numerous defendants in asbestos personal injury suits
and administrative claims involving 57,645 claimants pending as of May 6,  1993.
All  asbestos  bodily injury  claims pending  in  the federal  courts, including
approximately one-third  of  the  Personal Injury  Cases  pending  against  U.S.
Gypsum,  have  been consolidated  in the  United States  District Court  for the
Eastern District of Pennsylvania.

    U.S. Gypsum  is  a  member,  together with  19  other  former  producers  of
asbestos-containing   products,  of  the  Center   for  Claims  Resolution  (the
"Center"). The  Center  has assumed  the  handling, including  the  defense  and
settlement,  of all  Personal Injury Cases  pending against U.S.  Gypsum and the
other members of the Center. Each member of the Center is assessed a portion  of
the  liability and  defense costs  of the Center  for the  Personal Injury Cases
handled by the Center, according  to predetermined allocation formulas. Five  of
U.S.  Gypsum's insurance  carriers that in  1985 signed  an Agreement Concerning
Asbestos-Related Claims  (the "Wellington  Agreement") are  supporting  insurers
(the "Supporting Insurers") of the Center. The Supporting Insurers are obligated
to  provide coverage for the defense and indemnity costs of the Center's members
pursuant to  the coverage  provisions in  the Wellington  Agreement. Claims  for
punitive  damages are defended but  not paid by the  Center; if punitive damages
are  recovered,  insurance  coverage  may  be  available  under  the  Wellington
Agreement  depending on  the terms of  particular policies  and applicable state
law. Punitive damages have not  been awarded against U.S.  Gypsum in any of  the
Personal  Injury Cases. Virtually all of U.S. Gypsum's personal injury liability
and defense  costs  are  paid  by  those of  its  insurance  carriers  that  are
Supporting Insurers. The Supporting Insurers provided approximately $350 million
of the total coverage referred to above.

    On  January 15, 1993, U.S.  Gypsum and the other  members of the Center were
named as defendants in a class action  filed in the U.S. District Court for  the
Eastern  District Pennsylvania (GEORGINE ET AL. v. AMCHEM PRODUCTS INC., ET AL.,
Case No. 93-CV-0215) (hereinafter "Georgine," formerly known as "Carlough"). The
complaint generally defines the class of plaintiffs as all persons who have been
occupationally exposed  to  asbestos-containing  products  manufactured  by  the
defendants and who had not filed an asbestos personal injury suit as of the date
of  the filing of the class action.  Simultaneously with the filing of the class
action, the parties filed a settlement agreement in which the named  plaintiffs,
proposed  class counsel, and the defendants  agreed to settle and compromise the
claims of the  proposed class. The  settlement, if approved  by the court,  will
implement  for  all future  Personal  Injury Cases,  except  as noted  below, an
administrative compensation  system  to  replace  judicial  claims  against  the
defendants,  and will provide fair and adequate compensation to future claimants
who can demonstrate exposure to asbestos-containing products manufactured by the
defendants and the presence of  an asbestos-related disease. Class members  will
be  given  the  opportunity to  "opt  out," or  elect  to be  excluded  from the
settlement, although  the defendants  reserve  the right  to withdraw  from  the
settlement  if the number of opt outs  is, in their sole judgment, excessive. In
addition, in each year a limited number of claimants will have certain rights to
prosecute their claims for compensatory (but  not punitive) damages in court  in
the  event they reject compensation offered  by the administrative processing of
their claim.

    The Center  members,  including  U.S. Gypsum,  have  instituted  proceedings
against  those of their insurance carriers that had not consented to support the
settlement, seeking a  declaratory judgment  that the  settlement is  reasonable
and,  therefore, that the  carriers are obligated  to fund their  portion of it.
Consummation of the  settlement is  contingent upon, among  other things,  court
approval  of the settlement  and a favorable ruling  in the declaratory judgment
proceedings against the non-consenting insurers. It is anticipated that  appeals
will  follow the district  court's ruling on the  fairness and reasonableness of
the settlement.

                                      F-58
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    Each of  the defendants  has committed  to  fund a  defined portion  of  the
settlement,  up to a stated maximum amount,  over the initial ten-year period of
the  agreement  (which  is  automatically  extended  unless  terminated  by  the
defendants).  Taking  into account  the provisions  of the  settlement agreement
concerning the maximum number of claims that must be processed in each year  and
the  total amount to  be made available  to the claimants,  the Center estimates
that U.S.  Gypsum will  be obligated  to fund  a maximum  of approximately  $125
million  of the class  action settlement, exclusive of  expenses, with a maximum
payment of less than $18 million in any single year; of the total amount of U.S.
Gypsum's obligation, all but approximately $13 million or less is expected to be
paid by U.S. Gypsum's insurance carriers.

    During 1991, approximately 13,100 Personal  Injury Cases were filed  against
U.S.  Gypsum  and approximately  6,300 were  settled  or dismissed.  U.S. Gypsum
incurred expenses  of $15.1  million in  1991 with  respect to  Personal  Injury
Cases,  of which $15.0 million was paid by insurance. During 1992, approximately
20,100 Personal Injury Cases  were filed against  U.S. Gypsum and  approximately
10,600 were settled or dismissed. U.S. Gypsum incurred expenses of $21.6 million
in 1992 with respect to Personal Injury Cases of which $21.5 million was paid by
insurance.  In the period of January 1  through May 6, 1993, approximately 8,700
Personal Injury Cases  were filed  against U.S. Gypsum  and approximately  5,300
were settled or dismissed. U.S. Gypsum incurred expenses of $10.9 million in the
period  with respect to Personal Injury Cases of which $10.8 million was paid by
insurance. As  of  May  6,  1993,  December 31,  1992  and  December  31,  1991,
approximately  58,000, 54,000 and 43,000  Personal Injury Cases were outstanding
against U.S. Gypsum, respectively.

    U.S. Gypsum's average  settlement cost  for Personal Injury  Cases over  the
past  three years has been approximately  $1,350 per claim, exclusive of defense
costs. Management  anticipates that  its average  settlement cost  is likely  to
increase  due  to  such factors  as  the possible  insolvency  of co-defendants,
although this increase may be offset to some extent by other factors,  including
the possibility for block settlements of large numbers of cases and the apparent
increase in the percentage of asbestos personal injury cases that appear to have
been   brought  by  individuals  with  little  or  no  physical  impairment.  In
management's opinion,  based  primarily upon  U.S.  Gypsum's experience  in  the
Personal Injury Cases disposed of to date and taking into consideration a number
of  uncertainties, it  is probable  that asbestos-related  Personal Injury Cases
pending against U.S. Gypsum as of December  31, 1992, can be disposed of for  an
amount  estimated to  be between  $80 million  and $100  million, including both
indemnity costs and  legal fees and  expenses. The estimated  cost of  resolving
pending  claims takes into account, among other  factors, (i) an increase in the
number of pending claims; (ii) the settlements of certain large blocks of claims
for higher  per-case averages  than have  historically been  paid; and  (iii)  a
slight  increase in U.S. Gypsum's historical  settlement average. No accrual has
been recorded for  this amount  because, pursuant to  the Wellington  Agreement,
U.S. Gypsum's Supporting Insurers are obligated to pay these costs.

    Assuming  that the  Georgine class  action settlement  referred to  above is
approved substantially  in  its current  form,  management estimates,  based  on
assumptions  supplied by  the Center,  U.S. Gypsum's  maximum total  exposure in
Personal Injury  Cases  during the  next  ten years  (the  initial term  of  the
agreement),  including liability for pending claims,  claims resolved as part of
the class action settlement, and  opt out claims, as  well as defense costs  and
other expenses, at approximately $271 million, of which at least $254 million is
expected  to be paid by insurance.  U.S. Gypsum's additional exposure for claims
filed by persons who have  opted out of Georgine would  depend on the number  of
such claims that are filed, which cannot presently be determined.

                                      F-59
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

COVERAGE ACTION

    As  indicated above, all of U.S. Gypsum's carriers initially denied coverage
for the Property  Damage Cases and  the Personal Injury  Cases, and U.S.  Gypsum
initiated  the Coverage  Action to  establish its  right to  such coverage. U.S.
Gypsum has voluntarily dismissed the Supporting Insurers referred to above  from
the personal injury portion of the Coverage Action because they are committed to
providing  personal injury coverage in accordance with the Wellington Agreement.
U.S. Gypsum's  claims  against  the  remaining carriers  for  coverage  for  the
Personal Injury Cases have been stayed since 1984.

    On  January 7,  1991, the trial  court in  the Coverage Action  ruled on the
applicability of U.S. Gypsum's insurance policies to settlements and one adverse
judgment in eight Property  Damage Cases. The court  ruled that the eight  cases
were  generally covered, and  imposed coverage obligations  on particular policy
years based upon the dates when the presence of asbestos-containing material was
"first  discovered"  by  the   plaintiff  in  each   case.  The  court   awarded
reimbursement  of approximately $6.2 million spent by U.S. Gypsum to resolve the
eight cases. U.S.  Gypsum has appealed  the court's ruling  with respect to  the
policy  years  available  to  cover particular  claims,  and  the  carriers have
appealed most other aspects of the  court's ruling. These appeals are likely  to
take a year or more.

    U.S.  Gypsum's experience in the Property  Damage Cases suggests that "first
discovery" dates in the  eight cases referred to  above (1978 through 1985)  are
likely  to  be typical  of  most pending  cases.  U.S. Gypsum's  total insurance
coverage for  the years  1978  through 1984  totals approximately  $350  million
(after  subtracting  insolvencies  and discounts  given  to  settling carriers).
However, some pending cases, as well as  some cases filed in the future, may  be
found  to have first discovery dates later than August 1, 1984, after which U.S.
Gypsum's insurance  policies  did  not  provide  coverage  for  asbestos-related
claims.  In addition, as described below, the first layer excess carrier for the
years 1980 through  1984 is insolvent  and U.S.  Gypsum may be  required to  pay
amounts otherwise covered by those and other insolvent policies. Accordingly, if
the  court's ruling is affirmed,  U.S. Gypsum will likely  be required to bear a
portion of the cost of the property damage litigation.

    Eight carriers, including two of the Supporting Insurers, have settled  U.S.
Gypsum's  claims for both property damage  and personal injury coverage and have
been dismissed from the  Coverage Action entirely. Four  of these carriers  have
agreed to pay all or a substantial portion of their policy limits to U.S. Gypsum
beginning  in 1991 and continuing  over the next four  years. Three other excess
carriers, including the two settling Supporting Insurers, have agreed to provide
coverage for the Property Damage Cases and the Personal Injury Cases subject  to
certain  limitations and conditions,  when and if  underlying primary and excess
coverage is  exhausted. It  cannot presently  be determined  when such  coverage
might   be  reached.  Taking  into  account  the  above  settlements,  including
participation of certain of the  settling carriers in the Wellington  Agreement,
and  consumption  through  December  31, 1992,  carriers  providing  a  total of
approximately $97 million of unexhausted  insurance have agreed, subject to  the
terms  of the various settlement agreements, to cover both Personal Injury Cases
and Property  Damage Cases.  Carriers providing  an additional  $276 million  of
coverage  that was  unexhausted as  of December  31, 1992  have agreed  to cover
Personal Injury Cases under  the Wellington Agreement,  but continue to  contest
coverage for Property Damage Cases and remain defendants in the Coverage Action.
U.S.  Gypsum will continue  to seek negotiated resolutions  with its carriers in
order to minimize the expense and delays of litigation.

    Insolvency proceedings have  been instituted against  four of U.S.  Gypsum's
insurance  carriers.  Midland  Insurance Company,  declared  insolvent  in 1986,
provided excess insurance ($4  million excess of $1  million excess of  $500,000
primary  in  each policy  year) from  February  15, 1975  to February  15, 1978;
Transit Casualty Company, declared insolvent in 1985, provided excess  insurance
($15  million excess of $1  million primary in each  policy year) from August 1,
1980 to December 31, 1985; Integrity

                                      F-60
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
Insurance Company, declared  insolvent in 1986,  provided excess insurance  ($10
million quota share of $25 million excess of $90 million) from August 1, 1983 to
July  31, 1984;  and American  Mutual Insurance  Company, declared  insolvent in
1989, provided the primary layer of insurance ($500,000 per year) from  February
1,  1963 to April 15, 1971. It is  possible that U.S. Gypsum will be required to
pay a presently indeterminable  portion of the costs  that would otherwise  have
been covered by these policies.

    It  is not  possible to predict  the number of  additional lawsuits alleging
asbestos-related claims that  may be filed  against U.S. Gypsum.  The number  of
Personal  Injury Claims pending against U.S. Gypsum has increased in each of the
last several years.  In addition,  many Property Damage  Cases are  still at  an
early  stage and the potential liability therefrom is consequently uncertain. In
view of  the limited  insurance  funding currently  available for  the  Property
Damage  Cases  resulting  from the  continued  resistance  by a  number  of U.S.
Gypsum's insurers to providing coverage,  the effect of the asbestos  litigation
on  the Corporation will depend upon a variety of factors, including the damages
sought in the Property Damage Cases that reach trial prior to the completion  of
the Coverage Action, U.S. Gypsum's ability to successfully defend or settle such
cases,  and the resolution  of the Coverage  Action. As a  result, management is
unable to determine whether an adverse  outcome in the asbestos litigation  will
have  a material adverse effect on the results of operations or the consolidated
financial position of the Corporation.

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 substantially all 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  estimable 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 USG-owned property are  also
covered   by  reserves  established  in   accordance  with  the  foregoing.  The
Corporation believes that neither these matters nor any other known governmental
proceeding regarding environmental matters will  have a material adverse  effect
upon its earnings or consolidated financial position.

GEOGRAPHIC AND INDUSTRY SEGMENTS

    Transactions between geographic areas are accounted for on an "arm's-length"
basis.  No single customer accounted  for 4% or more  of consolidated net sales.
Export sales  to  foreign unaffiliated  customers  represent less  than  10%  of
consolidated net sales.

    Intrasegment  and  intersegment  eliminations  largely  reflect intercompany
sales from U.S. Gypsum to  L&W Supply. Segment operating profit/(loss)  includes
all  costs  and  expenses  directly  related  to  the  segment  involved  and an
allocation of  expenses which  benefit  more than  one segment.  Geographic  and
industry segment data for 1991 exclude discontinued operations.

                                      F-61
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

    Variations  in the levels of corporate identifiable assets primarily reflect
fluctuations in the levels of cash and cash equivalents. Restricted cash of  $88
million and $84 million, which represents the proceeds from the sale of DAP, are
included in corporate identifiable assets for 1992 and 1991, respectively.
<TABLE>
<CAPTION>
                                                              OPERATING         DEPLETION
JANUARY 1 THROUGH MAY 6, 1993                                  PROFIT/      DEPRECIATION AND         CAPITAL       IDENTIFIABLE
GEOGRAPHIC SEGMENTS                             NET SALES      (LOSS)         AMORTIZATION        EXPENDITURES       ASSETS
- ---------------------------------------------  -----------  -------------  -------------------  -----------------  -----------
<S>                                            <C>          <C>            <C>                  <C>                <C>
                                                                            (DOLLARS IN MILLIONS)
United States:
  Gypsum Products............................   $     303     $      30         $      10           $       6       $     956
  Interior Systems...........................         121            10                 5                   2             562
  Building Products Distribution.............         156            (1)                1                   1             116
  Intrasegment eliminations..................         (73)           --                --                  --              --
  Corporate..................................          --           (11)                2                  --             142
                                               -----------       ------            ------                 ---      -----------
  Total......................................         507            28                18                   9           1,776
Canada.......................................          48             4                 2                   1             198
Other Foreign................................          65             6                 2                   2             221
Transfers between geographic areas...........         (29)           --                --                  --              (1)
                                               -----------       ------            ------                 ---      -----------
Total........................................         591            38                22                  12           2,194
                                               -----------       ------            ------                 ---      -----------
                                               -----------       ------            ------                 ---      -----------

<CAPTION>
INDUSTRY SEGMENTS
- ---------------------------------------------
<S>                                            <C>          <C>            <C>                  <C>                <C>
Gypsum Products..............................   $     359     $      37         $      13           $       7       $   1,175
Interior Systems.............................         177            13                 6                   4             761
Building Products Distribution...............         156            (1)                1                   1             116
Intersegment eliminations....................        (101)           --                --                  --              --
Corporate....................................          --           (11)                2                  --             142
                                               -----------       ------            ------                 ---      -----------
Total........................................         591            38                22                  12           2,194
                                               -----------       ------            ------                 ---      -----------
                                               -----------       ------            ------                 ---      -----------
</TABLE>

                                      F-62
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
<TABLE>
<CAPTION>
                                                                               DEPLETION
YEAR ENDED DECEMBER 31, 1992                                OPERATING      DEPRECIATION AND          CAPITAL       IDENTIFIABLE
GEOGRAPHIC SEGMENTS                            NET SALES     PROFIT          AMORTIZATION         EXPENDITURES        ASSETS
- ---------------------------------------------  ---------  -------------  ---------------------  -----------------  -------------
                                                                             (DOLLARS IN MILLIONS)
<S>                                            <C>        <C>            <C>                    <C>                <C>
United States:
  Gypsum Products............................  $     889    $      69          $      30            $      25        $     645
  Interior Systems...........................        368           34                 13                   11              260
  Building Products Distribution.............        464            3                  2                    3               95
  Intrasegment eliminations..................       (216)          --                 --                   --               --
  Corporate..................................         --          (30)                 8                    1              423
                                               ---------        -----                ---                  ---      -------------
  Total......................................      1,505           76                 53                   40            1,423
Canada.......................................        149            7                  7                    6               96
Other Foreign................................        208           16                  6                    3              140
Transfers between geographic areas...........        (85)          --                 --                   --               --
                                               ---------        -----                ---                  ---      -------------
Total........................................      1,777           99                 66                   49            1,659
                                               ---------        -----                ---                  ---      -------------
                                               ---------        -----                ---                  ---      -------------

<CAPTION>
INDUSTRY SEGMENTS
- ---------------------------------------------
<S>                                            <C>        <C>            <C>                    <C>                <C>
Gypsum Products..............................  $   1,068    $      85          $      38            $      31        $     764
Interior Systems.............................        548           41                 18                   14              377
Building Products Distribution...............        464            3                  2                    3               95
Intersegment eliminations....................       (303)          --                 --                   --               --
Corporate....................................         --          (30)                 8                    1              423
                                               ---------        -----                ---                  ---      -------------
Total........................................      1,777           99                 66                   49            1,659
                                               ---------        -----                ---                  ---      -------------
                                               ---------        -----                ---                  ---      -------------
<CAPTION>
                                                                               DEPLETION
YEAR ENDED DECEMBER 31, 1991                                OPERATING      DEPRECIATION AND          CAPITAL       IDENTIFIABLE
GEOGRAPHIC SEGMENTS                            NET SALES     PROFIT          AMORTIZATION         EXPENDITURES        ASSETS
- ---------------------------------------------  ---------  -------------  ---------------------  -----------------  -------------
                                                                             (DOLLARS IN MILLIONS)
<S>                                            <C>        <C>            <C>                    <C>                <C>
United States:
  Gypsum Products............................  $     835    $      64          $      29            $      23        $     627
  Interior Systems...........................        386           47                 12                    9              263
  Building Products Distribution.............        424           --                  4                    1               85
  Intrasegment eliminations..................       (212)          --                 --                   --               --
  Corporate..................................         --          (22)                10                    1              383
                                               ---------        -----                ---                  ---      -------------
  Total......................................      1,433           89                 55                   34            1,358
Canada.......................................        169           22                  7                    3              111
Other Foreign................................        193           22                  6                   12              157
Transfers between geographic areas...........        (83)          --                 --                   --               --
                                               ---------        -----                ---                  ---      -------------
Total........................................      1,712          133                 68                   49            1,626
                                               ---------        -----                ---                  ---      -------------
                                               ---------        -----                ---                  ---      -------------

<CAPTION>
INDUSTRY SEGMENTS
- ---------------------------------------------
<S>                                            <C>        <C>            <C>                    <C>                <C>
Gypsum Products..............................  $   1,011    $      93          $      37            $      25        $     754
Interior Systems.............................        576           62                 17                   22              404
Building Products Distribution...............        424           --                  4                    1               85
Intersegment eliminations....................       (299)          --                 --                   --               --
Corporate....................................         --          (22)                10                    1              383
                                               ---------        -----                ---                  ---      -------------
Total........................................      1,712          133                 68                   49            1,626
                                               ---------        -----                ---                  ---      -------------
                                               ---------        -----                ---                  ---      -------------
</TABLE>

                                      F-63
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

<TABLE>
<CAPTION>
                                                                                         JANUARY 1     YEARS ENDED DECEMBER 31,
                                                                                          THROUGH
                                                                                          MAY 6,       ------------------------
TRANSFERS BETWEEN GEOGRAPHIC AREAS                                                         1993           1992         1991
- ------------------------------------------------------------------------------------  ---------------  -----------  -----------
<S>                                                                                   <C>              <C>          <C>
                                                                                                (DOLLARS IN MILLIONS)
United States.......................................................................     $      13      $      35    $      34
Canada..............................................................................             8             23           22
Other Foreign.......................................................................             8             27           27
                                                                                               ---            ---          ---
Total...............................................................................            29             85           83
                                                                                               ---            ---          ---
                                                                                               ---            ---          ---
</TABLE>

SUBSIDIARY DEBT GUARANTEES

    In  May 1993, the Corporation issued $340 million aggregate principal amount
of Senior 2002 Notes. Each of U.S. Gypsum, USG Industries, Inc., USG  Interiors,
USG  Foreign  Investments,  Ltd.,  L&W Supply,  Westbank  Planting  Company, USG
Interiors  International,  Inc.,  American  Metals  Corporation  and  La  Mirada
Products  Co.,  Inc. (together,  the "Combined  Guarantors") guaranteed,  in the
manner described below, both the obligations of the Corporation under the Credit
Agreement and the  Senior 2002 Notes.  The Combined Guarantors  are jointly  and
severally  liable under the Subsidiary Guarantees. Holders of the Bank Debt have
the right to (i) determine whether, when and to what extent the guarantees  will
be  enforced (provided that each  guarantee payment will be  applied to the Bank
Term Loan, Revolving Credit Facility, Capitalized Interest Notes and Senior 2002
Notes pro rata based on the respective  amounts owed thereon) and (ii) amend  or
eliminate the guarantees. The guarantees will terminate when the Bank Term Loan,
the  Revolving Credit  Facility and the  Capitalized Interest  Notes are retired
regardless of whether any Senior 2002 Notes remain unpaid. The liability of each
of the Combined Guarantors on its guarantee is limited to the greater of (i) 95%
of the lowest amount, calculated as of  July 13, 1988, sufficient to render  the
guarantor  insolvent,  leave the  guarantor with  unreasonably small  capital or
leave the guarantor unable to pay its debts as they become due (each as  defined
under  applicable law) and (ii)  the same amount, calculated  as of the date any
demand for payment under  such guarantee is made,  in each case plus  collection
costs.  The guarantees  are senior obligations  of the  applicable guarantor and
rank PARI PASSU with all unsubordinated obligations of the guarantor.

    There are 43 Non-Guarantors  (the "Combined Non-Guarantors"),  substantially
all  of  which  are  subsidiaries  of  Guarantors.  The  Combined Non-Guarantors
primarily include CGC, Gypsum Transportation  Limited, USG Canadian Mining  Ltd.
and  the Corporation's Mexican, European and Pacific subsidiaries. The long-term
debt of  the Combined  Non-Guarantors  of $28  million as  of  May 6,  1993  has
restrictive  covenants  that  restrict,  among  other  things,  the  payment  of
dividends.

    The following condensed consolidating information presents:

(i)  Condensed financial statements as of May 6, 1993 and December 31, 1992  and
    for  the  period of  January  1 through  May 6,  1993,  and the  years ended
    December 31, 1992 and 1991 of: (a) the Corporation on a parent company  only
    basis  (the "Parent Company,"  which was the only  entity of the Corporation
    included in the bankruptcy proceeding); (b) the Combined Guarantors; (c) the
    Combined Non-Guarantors; and  (d) the Corporation  on a consolidated  basis.
    Due  to the Restructuring and implementation  of fresh start accounting, the
    financial statements  for the  restructured company  (periods after  May  6,
    1993) are not comparable to those of the predecessor company. Except for the
    following  condensed  financial statements,  separate  financial information
    with respect  to  the  Combined  Guarantors  is  omitted  as  such  separate
    financial information is not deemed material to investors.

(ii)  The Parent Company and Combined Guarantors shown with their investments in
    their subsidiaries accounted for on the equity method.

(iii) Elimination entries necessary  to consolidate the  Parent Company and  its
    subsidiaries.

                                      F-64
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                 CONDENSED CONSOLIDATING STATEMENT OF EARNINGS
                         JANUARY 1 THROUGH MAY 6, 1993
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                           COMBINED
                                                 PARENT      COMBINED        NON-
                                                 COMPANY    GUARANTORS    GUARANTORS    ELIMINATIONS   CONSOLIDATED
                                               -----------  -----------  -------------  -------------  -------------
<S>                                            <C>          <C>          <C>            <C>            <C>
Net sales....................................   $      --    $     501     $     113      $     (23)     $     591
                                               -----------  -----------       ------         ------    -------------
Gross profit.................................           1           84            24             --            109
                                               -----------  -----------       ------         ------    -------------
Operating profit/(loss)......................         (11)          39            10             --             38
Equity in net earnings of the Subsidiaries...        (751)        (169)           --            920             --
Interest expense, net........................          80            3             1             --             84
Corporate service charge.....................         (92)          92            --             --             --
Other expense................................           1            5            --             --              6
Reorganization items.........................          53         (597)         (165)            --           (709)
                                               -----------  -----------       ------         ------    -------------
Earnings before taxes on income,
 extraordinary gain and changes in accounting
 principles..................................         698          705           174           (920)           657
Taxes on income/(income tax benefit).........          37          (24)            4             --             17
                                               -----------  -----------       ------         ------    -------------
Earnings before extraordinary gain and
 changes in accounting principles............         661          729           170           (920)           640
Extraordinary gain, net of taxes.............         944           --            --             --            944
Cumulative effect of changes in accounting
 principles..................................        (171)          22            (1)            --           (150)
                                               -----------  -----------       ------         ------    -------------
Net earnings.................................       1,434          751           169           (920)         1,434
                                               -----------  -----------       ------         ------    -------------
                                               -----------  -----------       ------         ------    -------------
</TABLE>

                                      F-65
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                 CONDENSED CONSOLIDATING STATEMENT OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1992
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                           COMBINED
                                                 PARENT      COMBINED        NON-
                                                 COMPANY    GUARANTORS    GUARANTORS    ELIMINATIONS   CONSOLIDATED
                                               -----------  -----------  -------------  -------------  -------------
<S>                                            <C>          <C>          <C>            <C>            <C>
Net sales....................................   $      --    $   1,503     $     359      $     (85)     $   1,777
                                               -----------  -----------        -----         ------    -------------
Gross profit/(loss)..........................          (2)         251            68             --            317
                                               -----------  -----------        -----         ------    -------------
Operating profit/(loss)......................         (30)         105            24             --             99
Equity in net (earnings)/loss of the
 Subsidiaries................................         230          (17)           --           (213)            --
Interest expense, net........................         310           10             2             --            322
Corporate service charge                             (340)         340            --             --             --
Other expense/(income).......................         (73)          75            (1)            --              1
                                               -----------  -----------        -----         ------    -------------
Earnings/(loss) before taxes on income.......        (157)        (303)           23            213           (224)
Taxes on income/(income tax benefit).........          34          (73)            6             --            (33)
                                               -----------  -----------        -----         ------    -------------
Net earnings/(loss)..........................        (191)        (230)           17            213           (191)
                                               -----------  -----------        -----         ------    -------------
                                               -----------  -----------        -----         ------    -------------
</TABLE>

                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                 CONDENSED CONSOLIDATING STATEMENT OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1991
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                           COMBINED
                                                 PARENT      COMBINED        NON-
                                                 COMPANY    GUARANTORS    GUARANTORS    ELIMINATIONS   CONSOLIDATED
                                               -----------  -----------  -------------  -------------  -------------
<S>                                            <C>          <C>          <C>            <C>            <C>
Net sales....................................   $      --    $   1,452     $     366      $    (106)     $   1,712
                                               -----------  -----------        -----         ------    -------------
Gross profit.................................           1          241            85             --            327
                                               -----------  -----------        -----         ------    -------------
Operating profit/(loss)......................         (22)         110            45             --            133
Equity in net (earnings)/loss of the
 Subsidiaries................................         185          (30)           --           (155)            --
Interest expense, net........................         305           15             2             --            322
Corporate service charge                             (331)         331            --             --             --
Other expense/(income).......................           6           (2)            1             --              5
                                               -----------  -----------        -----         ------    -------------
Earnings/(loss) from continuing operations
 before taxes on income......................        (187)        (204)           42            155           (194)
Taxes on income/(income tax benefit).........          15          (80)           12             --            (53)
                                               -----------  -----------        -----         ------    -------------
Earnings/(loss) from continuing operations...        (202)        (124)           30            155           (141)
Discontinued operations......................          41          (61)           --             --            (20)
                                               -----------  -----------        -----         ------    -------------
Net earnings/(loss)..........................        (161)        (185)           30            155           (161)
                                               -----------  -----------        -----         ------    -------------
                                               -----------  -----------        -----         ------    -------------
</TABLE>

                                      F-66
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                     CONDENSED CONSOLIDATING BALANCE SHEET
                               AS OF MAY 6, 1993
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                           COMBINED
                                                 PARENT      COMBINED        NON-
                                                 COMPANY    GUARANTORS    GUARANTORS    ELIMINATIONS  CONSOLIDATED
                                               -----------  -----------  -------------  ------------  -------------
<S>                                            <C>          <C>          <C>            <C>           <C>
ASSETS
Current Assets:
  Cash and cash equivalents..................   $      24    $      (7)    $      32     $       --     $      49
  Receivables, net...........................          55          236            49            (25)          315
  Inventories................................          --          111            39             (2)          148
                                               -----------  -----------        -----    ------------  -------------
    Total current assets.....................          79          340           120            (27)          512
Property, plant and equipment, net...........          22          628           117             --           767
Investment in Subsidiaries...................       1,823          312            --         (2,135)           --
Excess Reorganization Value..................          --          671           180             --           851
Other assets.................................        (103)         159             5              3            64
                                               -----------  -----------        -----    ------------  -------------
    Total assets.............................       1,821        2,110           422         (2,159)        2,194
                                               -----------  -----------        -----    ------------  -------------
                                               -----------  -----------        -----    ------------  -------------
LIABILITIES AND STOCKHOLDERS'
 EQUITY
Current Liabilities:
  Accounts payable and accrued expenses......   $     176    $      76     $      52     $      (24)    $     280
  Notes payable and long-term debt maturing
   within one year...........................           3            1            11             --            15
                                               -----------  -----------        -----    ------------  -------------
    Total current liabilities................         179           77            63            (24)          295
Long-term debt...............................       1,371           47            28             --         1,446
Deferred income taxes........................          --          155            15             --           170
Other liabilities............................         267            8             4             --           279
Stockholders' Equity:
  Common stock...............................           4            1             6             (7)            4
  Capital received in excess of par value....          --        1,678           306         (1,984)           --
  Deferred currency translation..............          --           --            --             --            --
  Reinvested earnings........................          --          144            --           (144)           --
                                               -----------  -----------        -----    ------------  -------------
    Total stockholders' equity...............           4        1,823           312         (2,135)            4
                                               -----------  -----------        -----    ------------  -------------
    Total liabilities and stockholders'
     equity..................................       1,821        2,110           422         (2,159)        2,194
                                               -----------  -----------        -----    ------------  -------------
                                               -----------  -----------        -----    ------------  -------------
</TABLE>

                                      F-67
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                     CONDENSED CONSOLIDATING BALANCE SHEET
                            AS OF DECEMBER 31, 1992
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                           COMBINED
                                                 PARENT      COMBINED        NON-
                                                 COMPANY    GUARANTORS    GUARANTORS    ELIMINATIONS  CONSOLIDATED
                                               -----------  -----------  -------------  ------------  -------------
<S>                                            <C>          <C>          <C>            <C>           <C>
ASSETS
Current Assets:
  Cash and cash equivalents..................   $      59    $      87     $      34     $       --     $     180
  Receivables (net of reserves)..............          65          219            40            (25)          299
  Inventories................................          --           82            34             (3)          113
  Restricted cash............................          --           88            --             --            88
                                               -----------  -----------        -----    ------------  -------------
    Total current assets.....................         124          476           108            (28)          680
Property, plant and equipment, net...........          19          664           117             --           800
Investment in Subsidiaries...................       1,073          133            --         (1,206)           --
Purchased goodwill, net......................          --           61             8             --            69
Other assets.................................         (89)         214           (11)            (4)          110
                                               -----------  -----------        -----    ------------  -------------
    Total assets.............................       1,127        1,548           222         (1,238)        1,659
                                               -----------  -----------        -----    ------------  -------------
                                               -----------  -----------        -----    ------------  -------------
LIABILITIES AND STOCKHOLDERS'
 EQUITY
Current Liabilities:
  Accounts payable and accrued expenses......   $     538    $      91     $      39     $      (24)    $     644
  Notes payable and long-term debt maturing
   within one year...........................         570          141             7             --           718
  Long-term debt classified as current.......       1,926           --            --             --         1,926
                                               -----------  -----------        -----    ------------  -------------
    Total current liabilities................       3,034          232            46            (24)        3,288
Long-term debt...............................           1           38            28             --            67
Deferred income taxes........................         (36)         196            15             --           175
Other liabilities............................          --            9            --             --             9
Stockholders' Equity/(Deficit):
  Common stock...............................           5            2             5             (7)            5
  Capital received in excess of par value....          23        1,002            34         (1,036)           23
  Deferred currency translation..............          --           (2)           (6)            --            (8)
  Reinvested earnings/(deficit)..............      (1,900)          71           100           (171)       (1,900)
                                               -----------  -----------        -----    ------------  -------------
    Total stockholders' equity/(deficit).....      (1,872)       1,073           133         (1,214)       (1,880)
                                               -----------  -----------        -----    ------------  -------------
    Total liabilities and stockholders'
     equity..................................       1,127        1,548           222         (1,238)        1,659
                                               -----------  -----------        -----    ------------  -------------
                                               -----------  -----------        -----    ------------  -------------
</TABLE>

                                      F-68
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
                         JANUARY 1 THROUGH MAY 6, 1993
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                             COMBINED
                                                 PARENT       COMBINED         NON-
                                                 COMPANY     GUARANTORS     GUARANTORS     ELIMINATIONS     CONSOLIDATED
                                               -----------  -------------  -------------  ---------------  ---------------
<S>                                            <C>          <C>            <C>            <C>              <C>
NET CASH FLOWS (TO)/FROM OPERATING
 ACTIVITIES..................................   $     (90)    $      76      $      --       $      --        $     (14)
                                                    -----        ------            ---           -----           ------
  Capital expenditures.......................          --            (9)            (3)             --              (12)
  Net proceeds from asset dispositions.......          --            --             --              --               --
                                                    -----        ------            ---           -----           ------
NET CASH FLOWS TO INVESTING ACTIVITIES.......          --            (9)            (3)             --              (12)
                                                    -----        ------            ---           -----           ------
  Issuance of debt...........................          --            --              5              --                5
  Repayment of debt..........................          --          (140)            (2)             --             (142)
  Cash dividends (paid)/received.............           2            --             (2)             --               --
  (Increase)/decrease in restricted assets...          44           (12)            --              --               32
  Net cash transfers (to)/from Corporate.....           9            (9)            --              --               --
                                                    -----        ------            ---           -----           ------
NET CASH FLOWS (TO)/FROM FINANCING
 ACTIVITIES..................................          55          (161)             1              --             (105)
                                                    -----        ------            ---           -----           ------
NET DECREASE IN CASH AND CASH EQUIVALENTS....         (35)          (94)            (2)             --             (131)
                                                    -----        ------            ---           -----           ------
Cash and cash equivalents at beginning of
 period......................................          59            87             34              --              180
                                                    -----        ------            ---           -----           ------
Cash and cash equivalents at end of period...          24            (7)            32              --               49
                                                    -----        ------            ---           -----           ------
                                                    -----        ------            ---           -----           ------
</TABLE>

                                      F-69
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
                          YEAR ENDED DECEMBER 31, 1992
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                             COMBINED
                                                 PARENT       COMBINED         NON-
                                                 COMPANY     GUARANTORS     GUARANTORS     ELIMINATIONS     CONSOLIDATED
                                               -----------  -------------  -------------  ---------------  ---------------
<S>                                            <C>          <C>            <C>            <C>              <C>
NET CASH FLOWS (TO)/FROM OPERATING
 ACTIVITIES..................................   $     (93)    $     117      $      66       $      --        $      90
                                                    -----        ------            ---           -----           ------
  Capital expenditures.......................          (1)          (39)            (9)             --              (49)
  Net proceeds from asset dispositions.......          --             2              4              --                6
                                                    -----        ------            ---           -----           ------
NET CASH FLOWS TO INVESTING ACTIVITIES.......          (1)          (37)            (5)             --              (43)
                                                    -----        ------            ---           -----           ------
  Issuance of debt...........................          --            --             57              --               57
  Repayment of debt..........................          (4)           (2)           (69)             --              (75)
  Cash dividends (paid)/received.............          --            56            (56)             --               --
  Increase in restricted assets..............          --            (4)            --              --               (4)
  Net cash transfers (to)/from Corporate.....         121          (121)            --              --               --
                                                    -----        ------            ---           -----           ------
NET CASH FLOWS (TO)/FROM FINANCING
 ACTIVITIES..................................         117           (71)           (68)             --              (22)
                                                    -----        ------            ---           -----           ------
NET INCREASE/(DECREASE) IN CASH AND CASH
 EQUIVALENTS.................................          23             9             (7)             --               25
                                                    -----        ------            ---           -----           ------
Cash and cash equivalents at beginning of
 period......................................          36            78             41              --              155
                                                    -----        ------            ---           -----           ------
Cash and cash equivalents at end of period...          59            87             34              --              180
                                                    -----        ------            ---           -----           ------
                                                    -----        ------            ---           -----           ------
</TABLE>

                                      F-70
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                   NOTES TO FINANCIAL STATEMENTS (CONCLUDED)
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
                          YEAR ENDED DECEMBER 31, 1991
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                             COMBINED
                                                 PARENT       COMBINED         NON-
                                                 COMPANY     GUARANTORS     GUARANTORS     ELIMINATIONS     CONSOLIDATED
                                               -----------  -------------  -------------  ---------------  ---------------
<S>                                            <C>          <C>            <C>            <C>              <C>
NET CASH FLOWS (TO)/FROM OPERATING
 ACTIVITIES..................................   $    (216)    $     211      $      34       $      --        $      29
                                               -----------       ------            ---           -----            -----
  Capital expenditures.......................          (1)          (33)           (15)             --              (49)
  Net proceeds from asset dispositions.......          --             4              1              --                5
  Net proceeds from divestiture of
   Discontinued Operations...................          80            --             --              --               80
                                               -----------       ------            ---           -----            -----
NET CASH FLOWS (TO)/FROM INVESTING
 ACTIVITIES..................................          79           (29)           (14)             --               36
                                               -----------       ------            ---           -----            -----
  Issuance of debt...........................          --            --             65              --               65
  Repayment of debt..........................          (4)           (1)           (63)             --              (68)
  Cash dividends (paid)/received.............          10             9            (19)             --               --
  Increase in restricted assets..............          --           (84)            --              --              (84)
  Net cash transfers (to)/from Corporate.....          34           (34)            --              --               --
                                               -----------       ------            ---           -----            -----
NET CASH FLOWS (TO)/FROM FINANCING
 ACTIVITIES..................................          40          (110)           (17)             --              (87)
                                               -----------       ------            ---           -----            -----
Net cash flows from discontinued
 operations..................................          --             2             --              --                2
                                               -----------       ------            ---           -----            -----
NET INCREASE/(DECREASE) IN CASH AND CASH
 EQUIVALENTS.................................         (97)           74              3              --              (20)
                                               -----------       ------            ---           -----            -----
Cash and cash equivalents at beginning of
 period......................................         133             4             38              --              175
                                               -----------       ------            ---           -----            -----
Cash and cash equivalents at end of period...          36            78             41              --              155
                                               -----------       ------            ---           -----            -----
                                               -----------       ------            ---           -----            -----
</TABLE>

                                      F-71
<PAGE>
                                USG CORPORATION
                               MANAGEMENT REPORT

    Management is responsible for the preparation and integrity of the financial
statements  and  related  notes  included  herein.  These  statements  have been
prepared in accordance  with generally  accepted accounting  principles and,  of
necessity,  include some amounts  that are based  on management's best estimates
and judgments.

    The Corporation's accounting systems  include internal controls designed  to
provide reasonable assurance of the reliability of its financial records and the
proper  safeguarding  and  use  of  its  assets.  Such  controls  are  based  on
established policies and procedures, are  implemented by trained personnel,  and
are  monitored through an internal audit program. The Corporation's policies and
procedures prescribe that the Corporation  and its subsidiaries are to  maintain
ethical  standards and  that its  business practices  are to  be consistent with
those standards.

    The Audit Committee of the Board, consisting solely of outside Directors  of
the  Corporation, maintains an ongoing appraisal, on behalf of the stockholders,
of the effectiveness of the independent auditors and management with respect  to
the  preparation of financial statements, the  adequacy of internal controls and
the Corporation's accounting policies.

                                      F-72
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Stockholders and Board
  of Directors of USG Corporation:

We  have audited the accompanying consolidated  balance sheet of USG Corporation
Predecessor Company, a Delaware corporation, and subsidiaries as of May 6,  1993
and  December 31, 1992  and the related consolidated  statements of earnings and
cash flows for the  period of January 1  through May 6, 1993  and for the  years
ended   December  31,  1992  and  1991.   These  financial  statements  are  the
responsibility of the Corporation's management. Our responsibility is to express
an opinion on these financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally  accepted   auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence  supporting
the  amounts and disclosures in the financial statements. An audit also includes
assessing the  accounting  principles used  and  significant estimates  made  by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

As discussed in Notes to  Financial Statements -- "Financial Restructuring"  and
"Fresh  Start Accounting"  notes, on  May 6,  1993, the  Corporation completed a
comprehensive  financial   restructuring  through   the  implementation   of   a
prepackaged  plan  of  reorganization  under Chapter  11  of  the  United States
Bankruptcy Code and applied fresh  start accounting. The restructuring  resulted
in  an extraordinary gain of  $944 million, primarily for  the exchange of debt,
and fresh  start accounting  resulted in  a $709  million gain,  primarily  from
revaluing assets and liabilities to reflect reorganization value. These one time
credits to income were recorded as of May 6, 1993 by the Predecessor Company. As
such,  results of operations  through May 6, 1993  (Predecessor Company) are not
comparable with results of operations subsequent to that date.

In our opinion, the  financial statements referred to  above present fairly,  in
all   material  respects,  the   financial  position  of   USG  Corporation  and
subsidiaries as of May 6, 1993 and  December 31, 1992, and the results of  their
operations  and their cash flows for the period of January 1 through May 6, 1993
and for the years ended December 31, 1992 and 1991, in conformity with generally
accepted accounting principles.

As discussed in Notes to Financial  Statements -- "Litigation" note, in view  of
the  limited  insurance funding  currently available  for property  damage cases
resulting from the continued resistance by a number of U.S. Gypsum's insurers to
providing coverage, the  effect of  the asbestos litigation  on the  Corporation
will  depend upon a variety of factors, including the damages sought in property
damage cases that reach  trial prior to the  completion of the coverage  action,
U.S.  Gypsum's  ability to  successfully defend  or settle  such cases,  and the
resolution of  the  coverage  action.  As a  result,  management  is  unable  to
determine  whether an  adverse outcome  in the  asbestos litigation  will have a
material adverse  effect  on  the  consolidated results  of  operations  or  the
consolidated financial position of the Corporation.

As  discussed in Notes to Financial  Statements -- "Cumulative Effect of Changes
in Accounting Principles" note, on January  1, 1993 the Corporation changed  its
methods  of  accounting  for  postretirement benefits  other  than  pensions and
accounting for income taxes.

                                          ARTHUR ANDERSEN & CO.
Chicago, Illinois
January 31, 1994

                                      F-73
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                                   SCHEDULE V
                         PROPERTY, PLANT AND EQUIPMENT
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                                              BEGINNING     ENDING
CLASSIFICATION                                                                                 BALANCE      BALANCE
- -------------------------------------------------------------------------------------------  -----------  -----------
<S>                                                                                          <C>          <C>
YEAR ENDED DECEMBER 31, 1991
- -------------------------------------------------------------------------------------------
Land and mineral deposits..................................................................   $      43    $      41
Buildings and realty improvements..........................................................         385          402
Machinery and equipment....................................................................         972        1,000
                                                                                             -----------  -----------
  Total....................................................................................       1,400        1,443
                                                                                             -----------  -----------
                                                                                             -----------  -----------
YEAR ENDED DECEMBER 31, 1992
- -------------------------------------------------------------------------------------------
Land and mineral deposits..................................................................          41           41
Buildings and realty improvements..........................................................         402          401
Machinery and equipment....................................................................       1,000        1,012
                                                                                             -----------  -----------
  Total....................................................................................       1,443        1,454
                                                                                             -----------  -----------
                                                                                             -----------  -----------
JANUARY 1 THROUGH MAY 6, 1993
- -------------------------------------------------------------------------------------------
Land and mineral deposits..................................................................          41           61
Buildings and realty improvements..........................................................         401          228
Machinery and equipment....................................................................       1,012          478
                                                                                             -----------  -----------
  Total....................................................................................       1,454          767
                                                                                             -----------  -----------
                                                                                             -----------  -----------
</TABLE>

    In accordance  with fresh  start accounting,  the Corporation  adjusted  its
property, plant and equipment accounts as of May 6, 1993 to fair market value.

    Detailed  information regarding  additions and  deductions other  than those
associated with fresh start accounting is omitted as neither total additions nor
total deductions during  each of  the periods shown  above exceeded  10% of  the
balance  at  the end  of the  period. Excluding  fresh start  adjustments, total
additions were $12 million in  the period of January 1  through May 6, 1993  and
$49  million  in each  of  the years  ended December  31,  1992 and  1991. Total
deductions excluding fresh start adjustments were  $12 million in the period  of
January  1 through May 6, 1993 and $38 million and $6 million in the years ended
December 31, 1992 and 1991, respectively.

    Total deductions include  the effect of  foreign currency translation  which
increased  total deductions by $1 million in the period of January 1 through May
6, 1993 and by $18 million in the year ended December 31, 1992. In 1991, foreign
currency translation adjustments decreased total deductions by $1 million.

    Upon retirement of other  disposition of property,  the applicable cost  and
accumulated  depreciation and depletion are removed from the accounts. Any gains
and losses are included in earnings.

                                      F-74
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                                  SCHEDULE VI
                   ACCUMULATED DEPRECIATION AND DEPLETION OF
                         PROPERTY, PLANT AND EQUIPMENT
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                                               BEGINNING      ENDING
CLASSIFICATION                                                                                  BALANCE       BALANCE
- -------------------------------------------------------------------------------------------  -------------  -----------
<S>                                                                                          <C>            <C>
YEAR ENDED DECEMBER 31, 1991
- -------------------------------------------------------------------------------------------
Land and mineral deposits..................................................................    $       7     $       7
Buildings and realty improvements..........................................................          141           147
Machinery and equipment....................................................................          427           470
                                                                                                   -----         -----
  Total....................................................................................          575           624
                                                                                                   -----         -----
                                                                                                   -----         -----
YEAR ENDED DECEMBER 31, 1992
- -------------------------------------------------------------------------------------------
Land and mineral deposits..................................................................            7             7
Buildings and realty improvements..........................................................          147           155
Machinery and equipment....................................................................          470           492
                                                                                                   -----         -----
  Total....................................................................................          624           654
                                                                                                   -----         -----
                                                                                                   -----         -----
JANUARY 1 THROUGH MAY 6, 1993
- -------------------------------------------------------------------------------------------
Land and mineral deposits..................................................................            7            --
Buildings and realty improvements..........................................................          155            --
Machinery and equipment....................................................................          492            --
                                                                                                   -----         -----
  Total....................................................................................          654            --
                                                                                                   -----         -----
                                                                                                   -----         -----
</TABLE>

    In accordance  with fresh  start accounting,  the Corporation  adjusted  its
property,  plant and equipment accounts as of  May 6, 1993 to fair market value.
Consequently, there were no reserves for  depreciation and depletion as of  that
date.

    Detailed  information regarding  additions and  deductions other  than those
associated with fresh start accounting is omitted as neither total additions nor
total deductions of property, plant and  equipment (see Schedule V) during  each
of  the periods shown above  exceeded 10% of the  balance of property, plant and
equipment at the end  of the related period.  Total provisions for  depreciation
and  depletion were $20 million  in the period of January  1 through May 6, 1993
and $58 million and $57 million in  the years ended December 31, 1992 and  1991,
respectively.  Total  deductions, excluding  fresh  start adjustments,  were $12
million in the period of  January 1 through May 6,  1993 and $28 million and  $8
million in the years ended December 31, 1992 and 1991, respectively.

    Total  deductions include the  effect of foreign  currency translation which
increased total deductions by $2 million in the period of January 1 through  May
6,  1993 and by  $10 million in the  year ended December  31, 1992 and decreased
total deductions by $1 million in the year ended December 31, 1991.

    Upon retirement or other  disposition of property,  the applicable cost  and
accumulated  depreciation and depletion are removed from the accounts. Any gains
and losses are included in earnings.

                                      F-75
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                                 SCHEDULE VIII
                       VALUATION AND QUALIFYING ACCOUNTS
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                                   PROVISION       RECEIVABLES
                                                                                  CHARGED TO       WRITTEN OFF
                                                                  BEGINNING        COSTS AND      AND DISCOUNTS     ENDING
ACCOUNT                                                            BALANCE         EXPENSES          ALLOWED        BALANCE
- -------------------------------------------------------------  ---------------  ---------------  ---------------  -----------
<S>                                                            <C>              <C>              <C>              <C>
YEAR ENDED DECEMBER 31, 1991
- -------------------------------------------------------------
Doubtful accounts............................................     $       6        $       7        $      (6)     $       7
Cash discounts...............................................             2               23              (23)             2
YEAR ENDED DECEMBER 31, 1992
- -------------------------------------------------------------
Doubtful accounts............................................             7                7               (5)             9
Cash discounts...............................................             2               24              (24)             2
JANUARY 1 THROUGH MAY 6, 1993
- -------------------------------------------------------------
Doubtful accounts............................................             9                3               (1)            11
Cash discounts...............................................             2                8               (8)             2
</TABLE>

                                      F-76
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                                  SCHEDULE IX
                             SHORT-TERM BORROWINGS
                             (DOLLARS IN MILLIONS)

<TABLE>
<CAPTION>
                                                                          MAXIMUM AMOUNT   AVERAGE AMOUNT   WEIGHTED AVERAGE
                                                            WEIGHTED        OUTSTANDING      OUTSTANDING      INTEREST RATE
CATEGORY OF AGGREGATE                                        AVERAGE        DURING THE       DURING THE     DURING THE PERIOD
SHORT-TERM BORROWINGS                  ENDING BALANCE     INTEREST RATE       PERIOD         PERIOD (A)            (B)
- ------------------------------------  -----------------  ---------------  ---------------  ---------------  -----------------
<S>                                   <C>                <C>              <C>              <C>              <C>
YEAR ENDED DECEMBER 31, 1991
- -------------------------------------------------------
  Notes payable (c).................      $       8              8.5%        $      19        $      15             10.5%
  Revolving Credit Facility (d).....            140             12.8               140              140             13.3
YEAR ENDED DECEMBER 31, 1992
- -------------------------------------------------------
  Notes payable (c).................              2             10.6                12                7              8.0
  Revolving Credit Facility (d).....            140             10.0               140              140             11.2
JANUARY 1 THROUGH MAY 6, 1993
- -------------------------------------------------------
  Notes payable (c).................              6              7.3                 6                3              8.8
  Revolving Credit Facility (d).....             --              7.3               140              140              8.7
<FN>
- ------------------------
(a) The average of month-end principal balances.
(b) Computed  by dividing average monthly interest expense for the period by the
    average amount of short-term borrowings outstanding.
(c) Represents borrowings from  several foreign banks  by USG International  and
    CGC  which  are  generally  not  subject to  the  provisions  of  the Credit
    Agreement.
(d) The Old  Credit Agreement,  effective up  to May  6, 1993,  included a  $200
    million Revolving Credit Facility, of which $70 million was established as a
    letter of credit subfacility. Effective May 6, 1993, these amounts were $175
    million and $110 million, respectively.
</TABLE>

                                      F-77
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                                   SCHEDULE X
                 SUPPLEMENTAL STATEMENT OF EARNINGS INFORMATION
                             (DOLLARS IN MILLIONS)

    The following amounts were charged to costs and expenses:

<TABLE>
<CAPTION>
                                                                     JANUARY 1     YEARS ENDED DECEMBER
                                                                      THROUGH              31,
                                                                      MAY 6,      ----------------------
                                                                       1993         1992        1991
                                                                   -------------  ---------     -----
<S>                                                                <C>            <C>        <C>
Maintenance and repairs..........................................    $      34    $     105   $      99
Depreciation, depletion and amortization.........................           22           66          68
</TABLE>

    Maintenance and repairs are recorded as costs or expenses when incurred.

    Taxes (excluding payroll and income taxes), rents, royalties and advertising
costs are not shown above, as individually they do not exceed one percent of net
sales in any of the periods shown.

                                      F-78
<PAGE>
                                USG CORPORATION
                             (PREDECESSOR COMPANY)
                 SUPPLEMENTAL NOTE ON FINANCIAL INFORMATION FOR
                          UNITED STATES GYPSUM COMPANY
                       (A SUBSIDIARY OF USG CORPORATION)

    USG  Corporation, a  holding company,  owns several  operating subsidiaries,
including U.S. Gypsum.  On January 1,  1985, all of  the issued and  outstanding
shares of stock of U.S. Gypsum were converted into shares of USG Corporation and
the  holding company became  a joint and several  obligor for certain debentures
originally issued by  U.S. Gypsum. As  of May 6,  1993, debentures totaling  $41
million  were recorded on  the holding company's  books of account  equal to the
amount recorded as of December 31,  1992. Financial results for U.S. Gypsum  are
presented  below in accordance with disclosure  requirements of the SEC (dollars
in millions):

                         SUMMARY STATEMENT OF EARNINGS

<TABLE>
<CAPTION>
                                                                    JANUARY 1          YEARS ENDED DECEMBER 31,
                                                                   THROUGH MAY   ------------------------------------
                                                                     6, 1993         1992               1991
                                                                  -------------  -------------  ---------------------
<S>                                                               <C>            <C>            <C>
Net sales.......................................................    $     297      $     871          $     822
Cost and expenses...............................................          268            801                759
                                                                       ------         ------             ------
Operating profit................................................           29             70                 63
Interest expense, net...........................................           --              2                  4
Other income, net...............................................           --             (2)                (1)
Corporate charges...............................................           52            188                173
Reorganization items............................................         (295)            --                 --
                                                                       ------         ------             ------
Earnings/(loss) before taxes on income and change in accounting
 principle......................................................          272           (118)              (113)
Income tax benefit..............................................          (11)           (44)               (43)
                                                                       ------         ------             ------
Earnings/(loss) before change in accounting principle...........          283            (74)               (70)
Cumulative effect of change in accounting principle.............           28             --                 --
                                                                       ------         ------             ------
Net earnings/(loss).............................................          311            (74)               (70)
                                                                       ------         ------             ------
                                                                       ------         ------             ------
</TABLE>

                             SUMMARY BALANCE SHEET

<TABLE>
<CAPTION>
                                                                                    AS OF              AS OF
                                                                                 MAY 6, 1993     DECEMBER 31, 1992
                                                                                -------------  ---------------------
<S>                                                                             <C>            <C>
Current assets................................................................    $     183          $     192
Property, plant and equipment, net............................................          486                511
Excess Reorganization Value...................................................          306                 --
Other assets..................................................................            9                  7
                                                                                     ------             ------
  Total assets................................................................          984                710
                                                                                     ------             ------
                                                                                     ------             ------
Current liabilities...........................................................    $      33          $      32
Other liabilities and obligations.............................................          154                193
Stockholder's equity..........................................................          797                485
                                                                                     ------             ------
  Total liabilities and stockholder's equity..................................          984                710
                                                                                     ------             ------
                                                                                     ------             ------
</TABLE>

                                      F-79
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
      WITH RESPECT TO SUPPLEMENTAL NOTE AND FINANCIAL STATEMENT SCHEDULES

    We  have audited in  accordance with generally  accepted auditing standards,
the consolidated financial statements  of USG Corporation (Predecessor  Company)
included  in this Form S-1, and have issued our report thereon dated January 31,
1994.  Our  report  on  the   consolidated  financial  statements  includes   an
explanatory  paragraph with respect  to the asbestos  litigation as discussed in
Notes  to  Financial  Statements  --  "Litigation"  note.  Our  report  on   the
consolidated  financial statements  also includes an  explanatory paragraph with
respect to the changes in the methods of accounting for postretirement  benefits
other  than pensions and  accounting for income  taxes as discussed  in Notes to
Financial Statements -- "Cumulative Effect on Changes on Accounting  Principles"
note.  Our audits were made  for the purpose of forming  an opinion on the basic
financial statements  taken as  a  whole. The  supplemental note  and  financial
statement  schedules on  pages F-74 through  F-79 are the  responsibility of the
Corporation's management and are  presented for purposes  of complying with  the
Securities  and  Exchange  Commission's rules  and  are  not part  of  the basic
financial statements. The  supplemental note and  financial statement  schedules
have  been subjected  to the  auditing procedures applied  in the  audits of the
basic financial statements  and, in our  opinion, fairly state  in all  material
respects  the financial data required to be set forth therein in relation to the
basic financial statements taken as a whole.

                                          ARTHUR ANDERSEN & CO.

Chicago, Illinois
January 31, 1994

                                      F-80
<PAGE>
                                USG CORPORATION

               SELECTED QUARTERLY FINANCIAL DATA (A) (UNAUDITED)
                  (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                      APRIL 1     MAY 7
                                           FIRST      THROUGH    THROUGH     THIRD      FOURTH
                                          QUARTER      MAY 6     JUNE 30    QUARTER     QUARTER
                                          --------   ---------   --------   --------   ---------
1993
<S>                                       <C>        <C>         <C>        <C>        <C>
Net sales...............................  $    436   $     155   $   315    $    514   $     496
Gross profit............................        79          30        63         105          95
Operating profit/(loss) (b).............        27          11        (1)          6          (4)
Net earnings/(loss)(b) (c)..............      (279)      1,713       (21)        (25)        (83)
Per common share (d):
  Net loss..............................        --          --     (0.57)      (0.66)      (2.23)
  Price range (e) -- high...............        --          --        14      22 5/8      30 1/2
                  low...................        --          --     9 5/8          13      20 1/4
EBITDA..................................        46          17        37          65          53

<CAPTION>
- ------------------------------------------------------------------------------------------------
<S>                                       <C>        <C>         <C>        <C>        <C>
<CAPTION>
                                           FIRST      SECOND      THIRD      FOURTH      TOTAL
                                          QUARTER     QUARTER    QUARTER    QUARTER      YEAR
                                          --------   ---------   --------   --------   ---------
<S>                                       <C>        <C>         <C>        <C>        <C>
1992 (D)
Net sales...............................  $   426    $   441     $   474    $   436    $   1,777
Gross profit............................       71         81          94         71          317
Operating profit........................       20         28          39         12           99
Net loss................................      (50)       (48)        (33)       (60)        (191)
EBITDA..................................       35         43          54         27          159
</TABLE>

- ------------------------
(a) Due to the Restructuring and  implementation of fresh start accounting,  the
    financial  statements effective May 7, 1993 for the restructured company are
    not  comparable  to  financial  statements  prior  to  that  date  for   the
    predecessor company.

(b)  Effective  May  7,  1993,  the  Corporation  began  amortizing  its  Excess
    Reorganization Value. This  non-cash amortization  reduced operating  profit
    and  net earnings by $28 million, $43  million and $42 million in the period
    of May 7 through June 30, the third quarter and the fourth quarter of  1993,
    respectively.

(c)  Net loss  in the first  quarter of  1993 reflects a  one-time after-tax net
    charge of $150 million  for the cumulative effect  of changes in  accounting
    principles  and a pre-tax  reorganization items expense  of $69 million. Net
    earnings in the period  of April 1  through May 6,  1993 include a  one-time
    pre-tax  reorganization items gain of $778  million and a one-time after-tax
    extraordinary gain of $944 million, both  of which were associated with  the
    Restructuring.  Net  earnings  in  the fourth  quarter  of  1993  include an
    after-tax extraordinary loss  of $21  million related  to the  Corporation's
    proposed 1994 financing plan.

(d)  Per-share information for periods prior to  May 7, 1993 is omitted because,
    due to the Restructuring and implementation of fresh start accounting, it is
    not meaningful.

(e) Stock  price ranges  are for  transactions on  the New  York Stock  Exchange
    (trading  symbol USG), which  is the principal  market for these securities.
    Stockholders of record as of December 31, 1993: Common -- 13,898;  Preferred
    -- none.

                                      F-81
<PAGE>
                                USG CORPORATION

                 COMPARATIVE FIVE-YEAR SUMMARY (A) (UNAUDITED)
                  (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                  MAY 7      JANUARY 1
                                                                 THROUGH      THROUGH             YEARS ENDED DECEMBER 31,
                                                                DEC. 31,      MAY 6,     ------------------------------------------
                                                                 1993(B)       1993        1992       1991       1990       1989
                                                               -----------  -----------  ---------  ---------  ---------  ---------
EARNINGS STATEMENT DATA:
<S>                                                            <C>          <C>          <C>        <C>        <C>        <C>
  Net sales..................................................   $   1,325    $     591   $   1,777  $   1,712  $   1,915  $   2,007
  Gross profit...............................................         263          109         317        327        416        501
  Selling and administrative expenses........................         149           71         218        194        203        209
  Amortization of Excess Reorganization Value................         113           --          --         --         --         --
  Operating profit...........................................           1           38          99        133        195        292
  Interest expense...........................................          92           86         334        333        292        297
  Interest income............................................         (4)           (2)        (12)       (11)        (8)       (10)
  Other (income)/expense, net................................         (8)            6           1          5          5         15
  Reorganization items.......................................          --         (709)         --         --         --         --
  Earnings/(loss) from continuing operations before
   extraordinary gain/(loss) and changes in accounting
   principles................................................       (108)          640        (191)      (141)       (54)        20
  Extraordinary gain/(loss), net of taxes....................        (21)          944          --         --         --         --
  Cumulative effect of accounting changes....................          --         (150)         --         --         --         --
  Net earnings/(loss)........................................       (129)        1,434        (191)      (161)       (90)        28
  Net earnings/(loss) per common share (c)...................      (3.46)
BALANCE SHEET DATA (AS OF THE END OF THE PERIOD):
  Working capital/(deficit)..................................         121          217      (2,608)    (2,372)    (2,198)        51
  Current ratio..............................................        1.24         1.74         .21        .21        .24       1.09
  Property, plant and equipment, net.........................         754          767         800        819        825        837
    Total assets.............................................       2,163        2,194       1,659      1,626      1,675      1,585
    Total debt (d)...........................................       1,531        1,556       2,711      2,660      2,600      2,428
  Total stockholders' equity/(deficit).......................       (134)            4      (1,880)    (1,680)    (1,518)    (1,438)
OTHER INFORMATION:
  EBITDA.....................................................         155           63         159        194        280        361
  Capital expenditures.......................................          29           12          49         49         64         76
  Gross margin %.............................................        19.8 %       18.4 %      17.8%      19.1%      21.7%      25.0%
  EBITDA margin %............................................        11.7 %       10.7 %       8.9%      11.3%      14.6%      18.0%
  Market value per common share (c)..........................      29 1/4
  Average number of employees................................      11,900       11,750      11,850     11,800     12,700     13,400
</TABLE>

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

(a)  Results reflect DAP (sold  in 1991), the Marlite  Division of USG Interiors
    (sold in 1989) and Wiss, Janney, Elstner Associates, Inc. (sold in 1989)  as
    discontinued operations.

(b)  Due to the Restructuring and  implementation of fresh start accounting, the
    financial statements effective May 7, 1993 for the restructured company  are
    not  comparable to financial statements prior  to that date. See Predecessor
    Company -- Notes  to Financial Statements  -- "Financial Restructuring"  and
    "Fresh Start Accounting" notes for more information on the Restructuring and
    implementation of fresh start accounting.

(c)  Per-share information for periods prior to  May 7, 1993 is omitted because,
    due to the Restructuring and implementation of fresh start accounting, it is
    not meaningful. Market  value per common  share of $29  1/4 was the  closing
    stock price on December 31, 1993.

(d)  Total debt  is shown  at principal amounts  for all  periods presented. The
    carrying amounts of total debt (net of unamortized reorganization  discount)
    as reflected on the Corporation's balance sheets as of December 31, 1993 and
    May 6, 1993 are $1,476 million and $1,461 million, respectively.

                                      F-82
<PAGE>
NO  DEALER, SALESPERSON  OR ANY  OTHER PERSON  HAS BEEN  AUTHORIZED TO  GIVE ANY
INFORMATION OR TO  MAKE ANY  REPRESENTATIONS OTHER  THAN THOSE  CONTAINED IN  OR
INCORPORATED  BY REFERENCE IN THIS PROSPECTUS  IN CONNECTION WITH THE OFFER MADE
BY THIS PROSPECTUS AND,  IF GIVEN OR MADE,  SUCH INFORMATION OR  REPRESENTATIONS
MUST  NOT  BE RELIED  UPON AS  HAVING  BEEN AUTHORIZED  BY THE  CORPORATION, THE
SELLING STOCKHOLDER OR  BY ANY  OF THE  UNDERWRITERS. THIS  PROSPECTUS DOES  NOT
CONSTITUTE  AN OFFER OR SOLICITATION BY ANYONE IN ANY JURISDICTION IN WHICH SUCH
OFFER OR SOLICITATION IS NOT AUTHORIZED OR IN WHICH THE PERSON MAKING SUCH OFFER
OR SOLICITATION  IS NOT  QUALIFIED TO  DO SO  OR TO  ANY PERSON  TO WHOM  IT  IS
UNLAWFUL TO MAKE SUCH SOLICITATION.
                            ------------------------

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                    PAGE
                                                    -----
<S>                                              <C>
Prospectus Summary.............................           3
Summary Financial Information..................           7
Risk Factors...................................           9
The Restructuring..............................          12
Purpose of the Offering and Use of Proceeds....          13
Capitalization.................................          15
Price Range of Common Stock....................          16
Dividend Policy................................          16
Dilution.......................................          17
Pro Forma Condensed Consolidated Financial
 Statements....................................          17
Selected Consolidated Financial Data...........          23
Management's Discussion and Analysis of
 Financial Condition and Results of
 Operations....................................          25
Business.......................................          31
Management.....................................          46
Ownership of Common Stock......................          59
Certain Relationships and Related
 Transactions..................................          61
Description of Credit Agreement................          63
Description of Other Debt Obligations..........          73
Description of Collateral Trust................          86
Description of Capital Stock...................          87
Certain United States Federal Tax Consequences
 for Non-U.S. Stockholders.....................          92
Underwriting...................................          94
Legal Matters..................................          97
Experts........................................          98
Additional Information.........................          98
Index to Financial Statements..................          99
</TABLE>

   
12,500,000 SHARES
USG CORPORATION
    

COMMON STOCK
($.10 PAR VALUE)

[LOGO]

SALOMON BROTHERS INC
LAZARD FRERES & CO.
SMITH BARNEY SHEARSON INC.

   
PROSPECTUS
DATED MARCH 9, 1994
    
<PAGE>
     Certain photographs used with permission of Herr, -C- Hedrich-Blessing
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS BE  ACCEPTED  PRIOR  TO  THE  TIME  THE  REGISTRATION  STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL  OR  A
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THE SECURITIES IN
ANY STATE IN WHICH SUCH OFFER, SOLICITATION  OR SALE WOULD BE UNLAWFUL PRIOR  TO
REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
                [ALTERNATIVE PAGE FOR INTERNATIONAL PROSPECTUS]

   
<TABLE>
<S>                 <C>                     <C>
PROSPECTUS          SUBJECT TO COMPLETION               [LOGO]
12,500,000 SHARES       MARCH 9, 1994
USG CORPORATION
COMMON STOCK
($.10 PAR VALUE)
</TABLE>
    

   
Of  the 12,500,000  shares of common  stock ("Common Stock")  of USG Corporation
("USG" or the "Corporation") being offered,  7,000,000 shares are being sold  by
the  Corporation and 5,500,000  shares are being sold  by Water Street Corporate
Recovery Fund  I,  L.P.  (the  "Selling Stockholder"  or  "Water  Street").  See
"Ownership  of  Common Stock  -- Selling  Stockholder  and its  Affiliates." The
Corporation will not receive any of the  proceeds from the sale of Common  Stock
by the Selling Stockholder.
    

   
Of  the 12,500,000  shares of Common  Stock being offered,  1,875,000 shares are
being offered hereby outside  the United States  and Canada (the  "International
Offering")  and 10,625,000 shares are being  offered in a concurrent offering in
the United States  and Canada (the  "U.S. Offering" and,  collectively with  the
International  Offering, the "Offering"), subject  to transfers between the U.S.
Underwriters (as defined herein) and the International Underwriters (as  defined
herein). The offering price and underwriting discounts for the U.S. Offering and
the  International Offering will be identical.  The closing of the U.S. Offering
is conditioned upon the closing of  the International Offering, and the  closing
of  the  International Offering  is  conditioned upon  the  closing of  the U.S.
Offering. See "Underwriting."
    

   
The Common Stock is traded on the New York Stock Exchange (the "NYSE") under the
symbol "USG." On March 8, 1994, the last reported sale price of the Common Stock
as reported on the NYSE Composite Tape  was $29.875 per share. See "Price  Range
of  Common Stock." Potential investors are  encouraged to obtain current trading
price information.
    

PROSPECTIVE INVESTORS SHOULD CONSIDER CAREFULLY THE MATTERS DISCUSSED UNDER  THE
CAPTION "RISK FACTORS."

THESE  SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES AND
EXCHANGE COMMISSION OR ANY  STATE SECURITIES COMMISSION  NOR HAS THE  SECURITIES
AND  EXCHANGE  COMMISSION OR  ANY STATE  SECURITIES  COMMISSION PASSED  UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

   
<TABLE>
<S>                          <C>             <C>             <C>             <C>
                                                             PROCEEDS TO     PROCEEDS TO
                             PRICE TO        UNDERWRITING    CORPORATION     SELLING
                             PUBLIC          DISCOUNT        (1)             STOCKHOLDER
Per Share..................  $29.875         $1.344          $28.531         $28.531
Total (2)..................  $373,437,500    $16,800,000     $199,717,000    $156,920,500
<FN>
(1) Before deduction of  expenses payable  by the Corporation,  estimated to  be
    $1,350,000.
(2) The  Corporation  and  the  Selling Stockholder  have  each  granted  to the
    International Underwriters a  30-day option  to purchase up  to 135,000  and
    146,250  additional shares  of Common Stock,  respectively, at  the Price to
    Public, less the Underwriting Discount, solely to cover over-allotments,  if
    any.  Additionally, the  Corporation and  the Selling  Stockholder have each
    granted to the U.S. Underwriters a  30-day option to purchase up to  765,000
    and 828,750 additional shares of Common Stock, respectively, at the Price to
    Public,  less the Underwriting Discount, solely to cover over-allotments, if
    any. If the Underwriters exercise such  options in full, the total Price  to
    Public,  Underwriting  Discount,  Proceeds to  Corporation  and  Proceeds to
    Selling  Stockholder  will  be  429,453,125,  19,320,000,  225,394,900,  and
    184,738,225, respectively. See "Underwriting."
</TABLE>
    

   
The  shares of Common Stock are offered subject to receipt and acceptance by the
International Underwriters, to prior sale and to the International Underwriters'
right to reject any order in whole or in part and to withdraw, cancel or  modify
the  offer without notice.  It is expected  that delivery of  the shares will be
made at the office of Salomon Brothers Inc, Seven World Trade Center, New  York,
New York, or through the facilities of The Depository Trust Company, on or about
March 16, 1994.
    

SALOMON BROTHERS INTERNATIONAL LIMITED            LAZARD BROTHERS & CO., LIMITED
                           SMITH BARNEY SHEARSON INC.

   
The date of this Prospectus is March 9, 1994.
    
<PAGE>
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]

                                  UNDERWRITING

    Subject  to the terms and the conditions set forth in an agreement among the
Corporation, the Selling  Stockholder and the  International Underwriters  ("the
International   Underwriting  Agreement"),  the   Corporation  and  the  Selling
Stockholder have agreed to sell to each of the International Underwriters  named
below   (the  "International  Underwriters"),  and  each  of  the  International
Underwriters, for whom Salomon Brothers International Limited, Lazard Brothers &
Co., Limited and Smith Barney Shearson  Inc. are acting as representatives  (the
"International  Representatives"),  has severally  agreed  to purchase  from the
Corporation and  the Selling  Stockholder  the respective  number of  shares  of
Common Stock set forth opposite its name below:

<TABLE>
<CAPTION>
                                                                                 NUMBER OF
                                                                                   SHARES
                         INTERNATIONAL UNDERWRITER                            TO BE PURCHASED
- ----------------------------------------------------------------------------  ----------------
<S>                                                                           <C>
Salomon Brothers International Limited......................................         537,500
Lazard Brothers & Co., Limited..............................................         537,500
Smith Barney Shearson Inc...................................................         537,500
ABN AMRO Bank N.V...........................................................          43,750
Banque Paribas..............................................................          43,750
Barclays de Zoete Wedd Limited..............................................          43,750
Deutsche Bank Aktiengesellschaft............................................          43,750
NatWest Securities Limited..................................................          43,750
Yamaichi International (Europe) Limited.....................................          43,750
                                                                              ----------------
  Total.....................................................................       1,875,000
                                                                              ----------------
                                                                              ----------------
</TABLE>

   
    In  the  International  Underwriting  Agreement,  the  several International
Underwriters have agreed, subject to the terms and conditions set forth therein,
to purchase all 1,875,000 shares of Common Stock offered hereby (other than  the
shares of Common Stock covered by the over-allotment options described below) if
any  such shares are purchased.  In the event of  a default by any International
Underwriter, the International Underwriting Agreement provides that, in  certain
circumstances,   purchase  commitments   of  the   non-defaulting  International
Underwriters may be increased or the International Underwriting Agreement may be
terminated. The Corporation and the Selling Stockholder have been advised by the
International  Representatives  that  the  several  International   Underwriters
propose  initially to  offer such shares  of Common  Stock to the  public at the
price to public set forth on the  cover page of this Prospectus, and to  certain
dealers  at such price less  a concession not in excess  of $0.80 per share. The
International Underwriters may allow and  such dealers may reallow a  concession
not  in excess  of $0.10 per  share to  other dealers. After  the initial public
offering, the public offering price and such concessions may be changed.
    

   
    The Corporation  and  the  Selling  Stockholder have  entered  into  a  U.S.
Underwriting  Agreement  with the  U.S.  Underwriters named  therein  (the "U.S.
Underwriters,"  and   together   with  the   International   Underwriters,   the
"Underwriters"),  for whom Salomon Brothers Inc,  Lazard Freres & Co., and Smith
Barney  Shearson   Inc.,  are   acting  as   the  representatives   (the   "U.S.
Representatives"),  providing for  the concurrent  offer and  sale of 10,625,000
shares of Common Stock in the  United States and Canada. Both the  International
Underwriting  Agreement  and the  U.S. Underwriting  Agreement provide  that the
obligations of the International Underwriters and the U.S. Underwriters are such
that if any of  the shares of  Common Stock are  purchased by the  International
Underwriters pursuant to the International Underwriting Agreement or by the U.S.
Underwriters  pursuant to  the U.S.  Underwriting Agreement,  all the  shares of
Common Stock agreed to be purchased by either the International Underwriters  or
the  U.S.  Underwriters,  as  the  case may  be,  pursuant  to  their respective
agreements must be so purchased. The initial
    

                                       94
<PAGE>
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]
public offering price and underwriting discount per share for the  International
Offering  and  the U.S.  Offering will  be  identical. The  closing of  the U.S.
Offering is a condition  to the closing of  the International Offering, and  the
closing  of the  International Offering is  conditioned upon the  closing of the
U.S. Offering.

   
    Each International Underwriter  has severally  agreed that, as  part of  the
distribution   of  the  1,875,000   shares  of  Common   Stock  offered  by  the
International Underwriters, (i) it is not purchasing any shares of Common  Stock
for  the account  of any United  States or Canadian  Person and (ii)  it has not
offered or sold, and will not offer or sell, directly or indirectly, any  shares
of  Common Stock or distribute  this Prospectus to any  person within the United
States or  Canada  or  to  any  United States  or  Canadian  Person.  Each  U.S.
Underwriter  has  severally agreed  that,  as part  of  the distribution  of the
10,625,000 shares  of Common  Stock by  the  U.S. Underwriters,  (i) it  is  not
purchasing  any shares of  Common Stock for  the account of  anyone other than a
United States or Canadian Person, and (ii) it has not offered or sold, and  will
not  offer  or sell,  directly  or indirectly,  any  shares of  Common  Stock or
distribute any Prospectus relating  to the U.S. Offering  to any person  outside
the  United States or Canada or to anyone other than a United States or Canadian
Person. The foregoing limitations do not apply to stabilization transactions  or
to   certain  other  transactions  specified   in  the  Agreement  Between  U.S.
Underwriters and International Underwriters. "United States or Canadian  Person"
means  any person who is a national or  resident of the United States or Canada,
any corporation, partnership or  other entity created or  organized in or  under
the laws of the United States or Canada or any political subdivision thereof and
any estate or trust which is subject to United States or Canadian federal income
taxation, regardless of the source of its income (other than a foreign branch of
any  United  States  or Canadian  Person),  and  includes any  United  States or
Canadian branch of a person other than a United States or Canadian Person.
    

   
    The Corporation  and  the  Selling  Stockholder have  each  granted  to  the
International  Underwriters options, exercisable during  the 30-day period after
the date of this  Prospectus, to purchase up  to 135,000 and 146,250  additional
shares  of  Common Stock,  respectively. Additionally,  the Corporation  and the
Selling  Stockholder  have  each  granted  to  the  U.S.  Underwriters  options,
exercisable  during  the 30-day  period after  the date  of this  Prospectus, to
purchase  up  to  765,000  and  828,750  additional  shares  of  Common   Stock,
respectively. Both such options are exercisable at the price to public set forth
on   the  cover  page  of  this  Prospectus,  less  underwriting  discount.  The
Underwriters may exercise such options solely to cover over-allotments, if  any,
made in connection with the Offering. Either or both options may be exercised at
any time up to 30 days after the date of this Prospectus. To the extent that the
Underwriters  exercise such options,  each of the Underwriters  will have a firm
commitment, subject to certain conditions, to purchase a number of option shares
proportionate to such Underwriter's initial commitment.
    

    Pursuant to  the  Agreement  Between  U.S.  Underwriters  and  International
Underwriters,  sales may be made between  the International Underwriters and the
U.S. Underwriters of such number  of shares of Common  Stock as may be  mutually
agreed.  The price of  any shares of Common  Stock so sold  shall be the initial
public offering  price,  less an  amount  not  greater than  the  concession  to
securities dealers. To the extent that there are sales between the International
Underwriters  and the U.S.  Underwriters pursuant to  the Agreement Between U.S.
Underwriters and  International Underwriters,  the number  of shares  of  Common
Stock  initially available for sale by  the International Underwriters or by the
U.S. Underwriters may be  more or less  than the amount  specified on the  cover
page of this Prospectus.

    Each  International Underwriter  has severally represented  and agreed that:
(i) it has not offered or sold and  will not offer or sell any shares of  Common
Stock in the United Kingdom by means of any document other than to persons whose
ordinary  business  it is  to  buy and  sell  shares or  debentures  (whether as
principal or agent)  in circumstances which  do not constitute  an offer to  the
public  within the meaning of  the Companies Act 1985;  (ii) it has complied and
will comply with all  applicable provisions of the  Financial Services Act  1986
with  respect to anything done  by it in relation to  the shares of Common Stock
in, from or otherwise involving the United Kingdom; and (iii) it has only issued
or passed on and

                                       95
<PAGE>
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]
will only issue or pass on in the United Kingdom any document received by it  in
connection  with the issue of the shares of Common Stock to any person who is of
a kind described in Article 9(3) of the Financial Services Act 1986  (Investment
Advertisements)  (Exemptions) Order 1988 or is a person to whom the document may
otherwise lawfully be issued or passed on.

    Purchasers of the shares of Common  Stock offered hereby may be required  to
pay  stamp taxes and other charges in  accordance with the laws and practices of
the country of purchase in addition to the offering price set forth on the cover
page hereof.

    The  U.S.  and  International  Underwriting  Agreements  provide  that   the
Corporation  and  the  Selling  Stockholder  will  indemnify  the  several  U.S.
Underwriters  and  International   Underwriters  against  certain   liabilities,
including  liabilities under the  Securities Act, or  contribute to payments the
U.S. Underwriters and the International Underwriters may be required to make  in
respect thereof.

    The Corporation has agreed not to sell, or otherwise dispose of, or announce
the offering of, any shares of Common Stock, or any securities convertible into,
or  exchangeable for,  or exercisable into,  shares of Common  Stock, except the
shares of Common Stock offered  in the Offering, for a  period of 120 days  from
the  date hereof without  the prior written consent  of the U.S. Representatives
and the International  Representatives; provided, however,  the Corporation  may
issue  and sell Common Stock (or  options exercisable for Common Stock) pursuant
to any employee or  non-employee director stock option  plan or stock  ownership
plan  of the Corporation  in effect on  the date hereof  and the Corporation may
issue Common Stock or any securities  convertible into, or exchangeable for,  or
exercisable  into shares of Common Stock pursuant to the terms of any securities
outstanding on the date hereof or other obligations binding upon the Corporation
and in effect on the date hereof.

    The Selling Stockholder has agreed not to sell, or otherwise dispose of,  or
announce  the  offering  of,  any  shares of  Common  Stock,  or  any securities
convertible into, or  exchangeable for,  or exercisable into,  shares of  Common
Stock,  for a period of 120 days from the date hereof, without the prior written
consent of  the  U.S.  Representatives and  the  International  Representatives,
except for the shares of Common Stock offered in the Offering and except that at
any  time after 90 days  after the date hereof,  Water Street may distribute any
such shares and securities to the partners in Water Street. In the event of  any
such  distribution by  Water Street, the  partners (other than  Goldman, Sachs &
Co.) would not be subject to the  restriction on selling shares of Common  Stock
during  the remainder of the 120-day period.  The partners in Water Street shall
not request a demand registration of such  shares or securities for a period  of
120  days from  the date hereof  without the  prior written consent  of the U.S.
Representatives   and   the   International   Representatives.   See    "Certain
Relationships and Related Transactions -- Agreement with Water Street Entities."

    From  April 1991  to May 1993,  Salomon Brothers Inc  ("Salomon") and Lazard
Freres  &  Co.  ("Lazard")  advised  the  Corporation  in  connection  with  the
development  and  implementation of  the Restructuring  for which  they received
customary fees and reimbursement  of expenses. Salomon  has also provided  other
financial  advisory and investment banking services to the Corporation from time
to time including, during the past two years, with respect to the divestiture of
DAP and certain business  strategy issues for which  it received customary  fees
and  reimbursement of expenses. In addition, Smith Barney Shearson Inc. acted as
financial advisor  to certain  holders  of the  Company's subordinated  debt  in
connection  with the Restructuring and received customary fees and reimbursement
of expenses.

                                 LEGAL MATTERS

    The validity of  the shares of  Common Stock offered  hereby will be  passed
upon  for the Corporation by Kirkland  & Ellis, Chicago, Illinois. Certain legal
matters will be passed  upon for the Underwriters  by Wachtell, Lipton, Rosen  &
Katz, New York, New York.

                                       96
<PAGE>
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]

                                    EXPERTS

    The  financial  statements and  schedules  included in  this  Prospectus and
elsewhere in the registration statement have  been audited by Arthur Andersen  &
Co.,  independent public accountants, as indicated in their reports with respect
thereto, and are included herein in reliance upon the authority of said firm  as
experts in giving said reports. Reference is made to said reports, which (1) for
the  Restructured Company, includes an explanatory paragraph with respect to the
asbestos  litigation  as  discussed  in   Notes  to  the  Financial   Statements
- --"Litigation"   note;  and  (2)  for   the  Predecessor  Company,  includes  an
explanatory paragraph with respect  to the asbestos  litigation as discussed  in
Notes  to  the  Financial Statements  --  "Litigation" note  and  an explanatory
paragraph with respect  to the  changes in the  methods of  accounting for  post
retirement  benefits  other than  pensions and  accounting  for income  taxes as
discussed in Notes to Financial Statements  -- "Cumulative Effect of Changes  in
Accounting Principles" note.

                             ADDITIONAL INFORMATION

    The  Corporation has filed with the  Securities and Exchange Commission (the
"Commission"  or  the  "SEC")  a   Registration  Statement  on  Form  S-1   (the
"Registration  Statement") (which term shall  encompass all amendments, exhibits
and schedules  thereto)  under the  Securities  Act  of 1933,  as  amended  (the
"Securities  Act"), with respect to the  Common Stock being offered hereby. This
Prospectus does not contain  all the information set  forth in the  Registration
Statement,  certain parts of which are omitted  in accordance with the rules and
regulations of  the Commission,  and to  which reference  is hereby  made.  Such
additional  information  can be  inspected and  copied  at the  public reference
facilities maintained by the Commission at Room 1024, Judiciary Plaza, 450 Fifth
Street, N.W., Washington, D.C.  20549 and at the  following regional offices  of
the  Commission: 500 W. Madison Street, Suite 1400, Chicago, Illinois 60661; and
Seven World Trade Center, New York, New York 10048. Copies of such material  can
be  obtained by  mail from  the public  reference section  of the  Commission at
Judiciary Plaza, 450 Fifth  Street, N.W., Washington,  D.C. 20549 at  prescribed
rates.  Statements made in this  Prospectus as to the  contents of any contract,
agreement or  other document  referred  to are  not necessarily  complete.  With
respect  to each such contract, agreement or  other document filed as an exhibit
to the  Registration Statement,  reference is  made to  the exhibit  for a  more
complete  description of the  matter involved, and each  such statement shall be
deemed qualified in its entirety by such reference.

    The  Corporation  is  subject  to  the  informational  requirements  of  the
Securities  Exchange  Act  of 1934,  as  amended  (the "Exchange  Act"),  and in
accordance therewith,  files periodic  reports and  other information  with  the
Commission.  Such reports  and other information  filed with  the Commission, as
well as the Registration  Statement, can be inspected  and copied at the  public
reference  facilities of the  Commission at 450  Fifth Street, N.W., Washington,
D.C. 20549, and  at the  Commission's regional offices  located at  Northwestern
Atrium   Center,  500  West  Madison   Street,  Suite  1400,  Chicago,  Illinois
60661-2511, and Seven World  Trade Center, New York,  New York 10048. Copies  of
such  material can also be obtained by mail from the Public Reference Section of
the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549, at  prescribed
rates.  Such reports and  other information with respect  to the Corporation are
available for inspection at the offices of the New York Stock Exchange, Inc., 20
Broad Street, New York, New York 10005 and the Chicago Stock Exchange, Inc., One
Financial Place, 440 South LaSalle Street, Chicago, Illinois 60605.

                                       97
<PAGE>
                 [ALTERNATE PAGE FOR INTERNATIONAL PROSPECTUS]

                                USG CORPORATION
                            ------------------------

                         INDEX TO FINANCIAL STATEMENTS

    On  May  6,  1993,  the  Corporation  completed  the  Restructuring  through
implementation   of  the  Prepackaged  Plan   as  described  elsewhere  in  this
Prospectus. See "Prospectus Summary"  and "The Restructuring." The  consolidated
financial  statements, notes to financial statements and supplementary financial
data for the period of May 7  through December 31, 1993, presented on pages  F-1
through F-36, report the financial results for the restructured USG Corporation.
As  a result of the Restructuring  and implementation of fresh start accounting,
these restructured  company  financial results  are  not comparable  to  results
reported in the periods prior to May 7, 1993 for the predecessor USG Corporation
which  are  presented  separately  on  pages  F-37  through  F-80.  Because  the
Restructuring was implemented on May 6, 1993, the Restructuring transaction  and
accounting  adjustments  associated  with  the  implementation  of  fresh  start
accounting are  reflected  in  the  results  of  the  predecessor  company.  All
historical  financial information presented on pages  F-1 through F-82 should be
read in  conjunction with  the  information included  in this  Prospectus  under
"Capitalization,"  "Pro Forma Condensed  Consolidated Financial Statements," and
"Management's Discussion  and Analysis  of Financial  Condition and  Results  of
Operations."

<TABLE>
<CAPTION>
                                                                                                     PAGE
                                                                                                   ---------
<S>                                                                                                <C>
RESTRUCTURED COMPANY:
  Consolidated Statement of Earnings -- May 7 through December 31, 1993..........................        F-1
  Consolidated Balance Sheet -- as of December 31, 1993..........................................        F-2
  Consolidated Statement of Cash Flows -- May 7 through December 31, 1993........................        F-3
  Notes to Financial Statements..................................................................        F-4
  Report of Independent Public Accountants.......................................................       F-29
  Schedule  V -- Property, Plant and Equipment...................................................       F-30
  Schedule  VI -- Accumulated Depreciation and Depletion of Property, Plant and Equipment........       F-31
  Schedule VIII -- Valuation and Qualifying Accounts.............................................       F-32
  Schedule  IX -- Short-Term Borrowings..........................................................       F-33
  Schedule  X -- Supplemental Statement of Earnings Information..................................       F-34
  Supplemental Note on Financial Information for United States Gypsum Company....................       F-35
  Report of Independent Public Accountants with Respect to Supplemental Note and Financial
   Statement Schedules...........................................................................       F-36
PREDECESSOR COMPANY:
  Consolidated Statement of Earnings -- January 1 through May 6, 1993 and the years ended
   December 31, 1992 and 1991....................................................................       F-37
  Consolidated Balance Sheet -- as of May 6, 1993 and December 31, 1992..........................       F-38
  Consolidated Statement of Cash Flows -- January 1 through May 6, 1993 and the years ended
   December 31, 1992 and 1991....................................................................       F-39
  Notes to Financial Statements..................................................................       F-40
  Report of Independent Public Accountants.......................................................       F-73
  Schedule  V -- Property, Plant and Equipment...................................................       F-74
  Schedule  VI -- Accumulated Depreciation and Depletion of Property, Plant and Equipment........       F-75
  Schedule VIII -- Valuation and Qualifying Accounts.............................................       F-76
  Schedule  IX -- Short-Term Borrowings..........................................................       F-77
  Schedule  X -- Supplemental Statement of Earnings Information..................................       F-78
  Supplemental Note on Financial Information for United States Gypsum Company                           F-79
  Report of Independent Public Accountants with Respect to Supplemental Note and Financial
   Statement Schedules...........................................................................       F-80
SELECTED QUARTERLY FINANCIAL DATA................................................................       F-81
COMPARATIVE FIVE-YEAR SUMMARY....................................................................       F-82
</TABLE>

    All  other schedules have been omitted  because they are not applicable, are
not required, or  the information  is included  in the  financial statements  or
notes thereto.

                                       98
<PAGE>
   
NO  DEALER, SALESPERSON  OR ANY  OTHER PERSON  HAS BEEN  AUTHORIZED TO  GIVE ANY
INFORMATION OR TO  MAKE ANY  REPRESENTATIONS OTHER  THAN THOSE  CONTAINED IN  OR
INCORPORATED  BY REFERENCE IN THIS PROSPECTUS  IN CONNECTION WITH THE OFFER MADE
BY THIS PROSPECTUS AND,  IF GIVEN OR MADE,  SUCH INFORMATION OR  REPRESENTATIONS
MUST  NOT  BE RELIED  UPON AS  HAVING  BEEN AUTHORIZED  BY THE  CORPORATION, THE
SELLING STOCKHOLDER OR  BY ANY  OF THE  UNDERWRITERS. THIS  PROSPECTUS DOES  NOT
CONSTITUTE  AN OFFER OR SOLICITATION BY ANYONE IN ANY JURISDICTION IN WHICH SUCH
OFFER OR SOLICITATION IS NOT AUTHORIZED OR IN WHICH THE PERSON MAKING SUCH OFFER
OR SOLICITATION  IS NOT  QUALIFIED TO  DO SO  OR TO  ANY PERSON  TO WHOM  IT  IS
UNLAWFUL TO MAKE SUCH SOLICITATION.
    

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

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                    PAGE
                                                    -----
<S>                                              <C>
Prospectus Summary.............................           3
Summary Financial Information..................           7
Risk Factors...................................           9
The Restructuring..............................          12
Purpose of the Offering and Use of Proceeds....          13
Capitalization.................................          15
Price Range of Common Stock....................          16
Dividend Policy................................          16
Dilution.......................................          17
Pro Forma Condensed Consolidated Financial
 Statements....................................          17
Selected Consolidated Financial Data...........          23
Management's Discussion and Analysis of
 Financial Condition and Results of
 Operations....................................          25
Business.......................................          31
Management.....................................          46
Ownership of Common Stock......................          59
Certain Relationships and Related
 Transactions..................................          61
Description of Credit Agreement................          63
Description of Other Debt Obligations..........          73
Description of Collateral Trust................          86
Description of Capital Stock...................          87
Certain United States Federal Tax Consequences
 for Non-U.S. Stockholders.....................          92
Underwriting...................................          94
Legal Matters..................................          96
Experts........................................          97
Additional Information.........................          97
Index to Financial Statements..................          98
</TABLE>

   
12,500,000 SHARES
USG CORPORATION
    

COMMON STOCK
($.10 PAR VALUE)

[LOGO]

SALOMON BROTHERS
INTERNATIONAL LIMITED
LAZARD BROTHERS & CO., LIMITED
SMITH BARNEY SHEARSON INC.

   
PROSPECTUS
DATED MARCH 9, 1994
    
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 13.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

    The following are the estimated expenses of the issuance and distribution of
the  Common  Stock  being  registered, including  fees  and  expenses previously
incurred by the Corporation, other than any underwriting compensation.

<TABLE>
<CAPTION>
                                                                                AMOUNT
                                 ITEM                                   (DOLLARS IN THOUSANDS)
- ----------------------------------------------------------------------  ----------------------
<S>                                                                     <C>
Securities and Exchange Commission Registration Fees..................        $      150
Stock Exchange Filing Fees............................................                30
NASD Filing Fee.......................................................                30
Blue Sky Fees and Expenses (including attorneys' fees and expenses)...                30
Printing and Engraving Expenses.......................................               420
Transfer Agent's Fees and Expenses....................................                30
Accounting Fees and Expenses..........................................               100
Legal Fees and Expenses...............................................               400
Miscellaneous Expenses................................................               160
                                                                                 -------
    Total.............................................................        $    1,350
                                                                                 -------
                                                                                 -------
</TABLE>

ITEM 14.  INDEMNIFICATION OF DIRECTORS AND OFFICERS
    Section 145  of the  Delaware General  Corporation Law  ("SECTION 145")  (a)
gives  Delaware corporations broad powers to  indemnify their present and former
directors and officers  and those  of affiliated  corporations against  expenses
incurred  in the defense of any lawsuit to which they are made parties by reason
of being  or  having been  such  directors  or officers,  subject  to  specified
conditions  and exclusions,  (b) gives  a director  or officer  who successfully
defends an  action  the  right to  be  so  indemnified and  (c)  authorizes  the
corporation   to  buy   directors'  and  officers'   liability  insurance.  Such
indemnification is not exclusive of any  other right to which those  indemnified
may be entitled under any bylaw, agreement, vote of stockholders or otherwise.

    A  bylaw provides that the Corporation  (a) shall indemnify every person who
is or was a director or officer of  the Corporation or is or was serving at  the
Corporation's   request  as  a  director  or  officer  of  another  corporation,
partnership, joint venture,  trust or  other enterprise  and (b)  shall, if  the
board of directors so directs, indemnify any person who is or was an employee or
agent of the Corporation or is or was serving at the Corporation's request as an
employee  or agent of another corporation,  partnership, joint venture, trust or
other enterprise, to the extent, in  the manner, and subject to compliance  with
the applicable standards of conduct, provided by Section 145 as the same (or any
substitute provision therefor) may be in effect from time to time.

    Any  such indemnification shall continue as to a person who has ceased to be
a director, officer, employee  or agent and  shall inure to  the benefit of  the
heirs, executors and administrators of such a person.

    The  Corporation  has procured  insurance for  the purpose  of substantially
covering its future potential liability for indemnification under Section 145 as
discussed above and certain future potential liability of individual officers or
directors  incurred  in  their  capacity  as  such  which  is  not  subject   to
indemnification.

    The Corporation has entered into Indemnification Agreements with each of its
officers   and  directors.  The  Indemnification  Agreements  provide  that  the
Corporation shall indemnify and keep  indemnified the indemnitee to the  fullest
extent  authorized by Section 145 as it may  be in effect from time to time from
and against any  expenses (including expenses  of investigation and  preparation
and  reasonable fees and  disbursements of legal  counsel, accountants and other
experts), judgments, fines and amounts paid  in settlement by the indemnitee  in
connection    with    any    threatened,    pending    or    completed   action,

                                      II-1
<PAGE>
suit or proceeding,  whether civil, criminal,  administrative or  investigative,
and  whether or not the  cause of action, suit  or proceeding incurred before or
after the date of the Indemnification Agreement. The Indemnification  Agreements
further  provide for  advancement of amounts  to cover expenses  incurred by the
indemnitee in  defending any  such  action, suit  or  proceeding subject  to  an
undertaking  by the indemnitee to repay any  expenses advanced which it is later
determined he or she was not entitled to receive.

ITEM 15.  RECENT SALES OF UNREGISTERED SECURITIES

    During the past three years, the  Corporation has not sold any  unregistered
securities,  except in the Note Placement (as defined in the Prospectus included
in this Registration Statement).

ITEM 16.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

    (a) The following is  a complete list  of Exhibits filed as  a part of  this
Registration Statement:

        See Exhibit Index

    (b)  The following is a complete list of financial statement Schedules filed
as a  part  of this  Registration  Statement  and included  with  the  financial
statements filed as a part of this Registration Statement:

<TABLE>
<S>        <C>           <C>        <C>
1.         Schedule V    --         Property, Plant and Equipment
2.         Schedule VI   --         Accumulation Depreciation and Depletion of Property, Plant and
                                    Equipment
3.         Schedule      --         Valuation and Qualifying Accounts
           VIII
4.         Schedule IX   --         Short-Term Borrowings
5.         Schedule X    --         Supplemental Statement of Earnings Information
</TABLE>

    All  other  schedules are  omitted because  they are  not applicable  or the
required information is shown in the financial statements or notes thereto.

ITEM 17.  UNDERTAKINGS

    The Registrant hereby undertakes:

    (1) To  provide  to  the  Underwriters  at  the  closing  specified  in  the
underwriting agreement certificates in such denominations and registered in such
names  as  required  by  the  Underwriters to  permit  prompt  delivery  to each
purchaser.

    (2) For purposes of determining any liability under the Act, the information
omitted from the form of prospectus filed as part of this registration statement
in reliance upon Rule 430A  and contained in a form  of prospectus filed by  the
registrant  pursuant to Rule 424(b)(1)  or (4) or 497(h)  under the Act shall be
deemed to be part of this registration statement as of the time it was  declared
effective.

    (3)  That, for the purpose of determining any liability under the Securities
Act of 1933,  each such post-effective  amendment shall  be deemed to  be a  new
registration  statement,  relating to  the securities  offered therein,  and the
offering of such securities at that time shall be deemed to be the initial  bona
fide offering thereof; and

    (4)  To remove from registration by  means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of the
offering.

    Insofar as indemnification for liabilities arising under the Securities  Act
of  1933 may be permitted to directors,  officers and controlling persons of the
Registrants pursuant to provisions described  in this Registration Statement  or
otherwise,  the  Registrants  have  been  advised that  in  the  opinion  of the
Securities and Exchange Commission such indemnification is against public policy
as expressed in the Act  and is, therefore, unenforceable.  In the event that  a
claim  for indemnification against  such liabilities (other  than the payment by
the Registrants  of  expenses  incurred  or  paid  by  a  director,  officer  or
controlling  person of the Registrants in  the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling  person
in connection with the securities being registered, the Registrants will, unless
in  the  opinion of  their respective  counsel  the matter  has been  settled by
controlling precedent,  submit  to  a  court  of  appropriate  jurisdiction  the
question  of  whether such  indemnification by  it is  against public  policy as
expressed in the  Act and will  be governed  by the final  adjudication of  such
issue.

                                      II-2
<PAGE>
                                   SIGNATURES

   
    Pursuant  to the requirements of the  Securities Act of 1933, the Registrant
has duly caused this Registration  Statement to be signed  on its behalf by  the
undersigned,  thereunto  duly  authorized,  in the  City  of  Chicago,  State of
Illinois on March 9, 1994.
    

                                          USG CORPORATION

                                          By:       /s/ Richard H. Fleming
                                          --------------------------------------
                                                     Richard H. Fleming
                                             VICE PRESIDENT AND CHIEF FINANCIAL
                                                         OFFICER

   
    Pursuant  to  the  requirements  of   the  Securities  Act  of  1933,   this
Registration  Statement  has been  signed  on March  9,  1994, by  the following
persons in the capacities indicated:
    

<TABLE>
<CAPTION>
                   SIGNATURE                                                TITLE
- ------------------------------------------------  ---------------------------------------------------------
<C>                                               <S>
                                *
     --------------------------------------       Chairman of the Board, Chief Executive Officer, and
               Eugene B. Connolly                  Director (Principal Executive Officer)
     --------------------------------------       President, Chief Operating Officer, and Director
                William C. Foote
                 /s/ Richard H. Fleming
     --------------------------------------       Vice President and Chief Financial Officer (Principal
               Richard H. Fleming                  Financial Officer)
                   /s/ Raymond T. Belz
     --------------------------------------       Vice President and Controller
                Raymond T. Belz                    (Principal Accounting Officer)
                                *
     --------------------------------------       Director
               Robert L. Barnett
                                *
     --------------------------------------       Director
                 Keith A. Brown
                                *
     --------------------------------------       Director
                   W.H. Clark
                                *
     --------------------------------------       Director
                James C. Cotting
                                *
     --------------------------------------       Director
              Lawrence M. Crutcher
</TABLE>

                                      II-3
<PAGE>

<TABLE>
<CAPTION>
                   SIGNATURE                                                TITLE
- ------------------------------------------------  ---------------------------------------------------------
<C>                                               <S>
                                *
     --------------------------------------       Director
                Wade Fetzer III
                                *
     --------------------------------------       Director
                  David W. Fox
                                *
     --------------------------------------       Director
             Philip C. Jackson, Jr.
                                *
     --------------------------------------       Director
                Marvin E. Lesser
                                *
     --------------------------------------       Director
                John B. Schwemm
     --------------------------------------       Director
               Judith A. Sprieser
                                *
     --------------------------------------       Director
                 Alan G. Turner
                                *
     --------------------------------------       Director
                Barry L. Zubrow
</TABLE>

*By:                            /s/ Richard H. Fleming

                          ----------------------------
                                 Richard H. Fleming
                                  Attorney-in-fact

                                      II-4
<PAGE>
                                 EXHIBIT INDEX

    The  following documents are the exhibits  to this Registration Statement on
Form S-1. For  convenient reference,  each exhibit  is listed  according to  the
Exhibit  Table of Regulation  S-K. The page  number, if any,  listed opposite an
exhibit indicates the  page number  in the  sequential numbering  system in  the
manually  signed original of this Registration  Statement on Form S-1 where such
exhibit can  be  found.  Exhibits  followed  by  an  (*)  constitute  management
contracts  or compensatory plans  or arrangements. Exhibits  followed by an (**)
have been filed previously.

<TABLE>
<CAPTION>
 EXHIBIT
   NO.                                                                                                            PAGE
- ---------                                                                                                       ---------
<C>        <S>        <C>                                                                                       <C>
       1.  Underwriting Agreements
           (a)        U.S. Underwriting Agreement.                                                              **
           (b)        International Underwriting Agreement.                                                     **
       3.  Articles of incorporation and by-laws:
           (a)        Restated Certificate of Incorporation of  USG Corporation (incorporated by reference  to
                      Exhibit 3.1 of USG Corporation's Form 8-K, dated May 7, 1993.)
           (b)        Amended  and Restated By-Laws of USG Corporation, dated as of May 12, 1993 (incorporated
                      by reference  to Exhibit  3(b) of  Amendment  No. 1  to USG  Corporation's  Registration
                      Statement No. 33-61162 on Form S-1, dated June 16, 1993).
       4.  Instruments defining the rights of security holders, including indentures:
           (a)        Indenture  dated as  of October  1, 1986  between USG  Corporation and  Harris Trust and
                      Savings Bank, Trustee (incorporated  by reference to Exhibit  4(a) of USG  Corporation's
                      Registration Statement No. 33-9294 on Form S-3, dated October 7, 1986).
           (b)        Resolutions  dated December  16, 1986  of a  Special Committee  created by  the Board of
                      Directors of  USG  Corporation  (incorporated  by  reference  to  Exhibit  4(b)  of  USG
                      Corporation's 1993 Annual Report on Form 10-K, filed on February 24, 1994).
           (c)        Resolutions dated March 5, 1987 of a Special Committee created by the Board of Directors
                      of  USG Corporation (incorporated by reference to Exhibit 4(c) of USG Corporation's 1993
                      Annual Report on Form 10-K, filed on February 24, 1994).
           (d)        Resolutions dated March 6, 1987 of a Special Committee created by the Board of Directors
                      of USG Corporation (incorporated by reference to Exhibit 4(d) of USG Corporation's  1993
                      Annual Report on Form 10-K, filed on February 24, 1994).
           (e)        Resolutions  dated  April  26, 1993  of  a Special  Committee  created by  the  Board of
                      Directors of USG Corporation relating to USG Corporation's 8% Senior Notes due 1995  and
                      9%  Senior Notes due 1998 (incorporated by reference to Exhibit 4.1 of USG Corporation's
                      Form 8-K, dated May 7, 1993).
           (f)        Consent Resolutions adopted by a Special Committee created by the Board of Directors  of
                      USG Corporation relating to USG Corporation's 9 1/4% Senior Notes due 2001.               **
           (g)        Indenture dated as of April 26, 1993 among USG Corporation, certain guarantors and State
                      Street Bank and Trust Company, as Trustees, relating to USG Corporation's 10 1/4% Senior
                      Notes  due 2002 (incorporated by reference to Exhibit 4.2 of USG Corporation's Form 8-K,
                      dated May 7, 1993).
           (h)        Indenture dated as  of August  10, 1993 among  USG Corporation,  certain guarantors  and
                      State  Street Bank and Trust Company, as  Trustee, relating to USG Corporation's 10 1/4%
                      Senior Notes  due 2002,  Series B  (incorporated by  reference to  Exhibit 4(f)  of  USG
                      Corporation's  Quarterly Report on Form  10-Q for the quarter  ended June 30, 1993 dated
                      August 12, 1993.
           (i)        Warrant Agreement dated May 6, 1993 between USG Corporation and Harris Trust and Savings
                      Bank, as  Warrant  Agent,  relating  to  USG  Corporation's  Warrants  (incorporated  by
                      reference to Exhibit 4.3 of USG Corporation's Form 8-K, dated May 7, 1993).
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
 EXHIBIT
   NO.                                                                                                            PAGE
- ---------                                                                                                       ---------
<C>        <S>        <C>                                                                                       <C>
           (j)        Form  of Warrant Certificate (incorporated by reference to Exhibit 4(g) of Amendment No.
                      4 to USG Corporation's Registration Statement  No. 33-40136 on Form S-4, dated  November
                      12, 1992).
           (k)        Rights  Agreement dated May 6, 1993 between USG Corporation and Harris Trust and Savings
                      Bank, as Rights Agent  (incorporated by reference to  Exhibit 10.1 of USG  Corporation's
                      Form 8-K, dated May 7, 1993).
           (l)        Form  of  Common Stock  certificate (incorporated  by  reference to  Exhibit 4.4  to USG
                      Corporation's Form 8-K, dated May 7, 1993).
                      The Corporation and certain  of its consolidated subsidiaries  are parties to  long-term
                      debt  instruments under which the total amount  of securities authorized does not exceed
                      10% of the total assets of the Corporation and its subsidiaries on a consolidated basis.
                      Pursuant to paragraph  (b)(4)(iii)(A) of  Item 601  of Regulation  S-K, the  Corporation
                      agrees  to furnish a copy of such  instruments to the Securities and Exchange Commission
                      upon request.
       5.  Opinions of counsel as to the legality of the securities being registered.
      10.  Material contracts:
           (a)        Management Performance Plan of USG Corporation (incorporated by reference to Annex C  of
                      Amendment  No. 8 to USG  Corporation's Registration Statement No.  33-40136 on Form S-4,
                      dated February 3, 1993).*
           (b)        1991-1993 Management  Incentive  Compensation Program  --  USG Corporation,  as  amended
                      (incorporated  by reference to Exhibit 10(b) of  USG Corporation's 1991 Annual Report on
                      Form 10-K, dated March 5, 1992).*
           (c)        Amendment and Restatement of USG Corporation Supplemental Retirement Plan, effective  as
                      of July 1, 1993 and dated November 30, 1993.*                                             **
           (d)        First  Amendment  of  USG  Corporation Supplemental  Retirement  Plan,  effective  as of
                      November 15, 1993 and dated December 2, 1993.*                                            **
           (e)        Termination Compensation Agreements (incorporated by  reference to Exhibit 10(h) of  USG
                      Corporation's 1991 Annual Report on Form 10-K, dated March 5, 1992).*
           (f)        USG  Corporation Severance Plan  for Key Managers,  dated May 15,  1991 (incorporated by
                      reference to Exhibit 10(i) of USG Corporation's  1991 Annual Report on Form 10-K,  dated
                      March 5, 1992).*
           (g)        Indemnification Agreements *.                                                             **
           (h)        Form  of Change  of Control Waiver  (incorporated by  reference to Exhibit  10(t) of USG
                      Corporation's 1992 Annual Report on Form 10-K dated March 26, 1993).*
           (i)        Incentive Recovery  Program --  Waiver of  Full Payment  (incorporated by  reference  to
                      Exhibit  10(u) of  USG Corporation's 1992  Annual Report  on Form 10-K,  dated March 26,
                      1993).*
           (j)        Rights Agreement dated May 6, 1993 between USG Corporation and Harris Trust and  Savings
                      Bank,  as Rights Agent (incorporated  by reference to Exhibit 10.1  of Form 8-K filed by
                      USG Corporation on May 7, 1993).
           (k)        Warrant Agreement dated May 6, 1993 between USG Corporation and Harris Trust and Savings
                      Bank, as  Warrant  Agent,  relating  to  USG  Corporation's  Warrants  (incorporated  by
                      reference to Exhibit 4.3 of Form 8-K filed by USG Corporation on May 7, 1993).
           (l)        Amended  and Restated Credit Agreement dated as of May 6, 1993 among USG Corporation and
                      USG Interiors, Inc., as  borrowers; the Financial Institutions  listed on the  signature
                      pages  thereof, as  Senior Lenders; Bankers  Trust Company, Chemical  Bank and Citibank,
                      N.A., as Agents; and Citibank, N.A., as Administrative Agent (incorporated by  reference
                      to Exhibit 10.2 of Form 8-K filed by USG Corporation on May 7, 1993).
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
 EXHIBIT
   NO.                                                                                                            PAGE
- ---------                                                                                                       ---------
<C>        <S>        <C>                                                                                       <C>
           (m)        First Amendment to Amended and Restated Credit Agreement between USG Corporation and USG
                      Interiors,  Inc. as borrowers; the Financial  Institutions listed on the signature pages
                      thereof, as Senior Lenders; Bankers Trust Company, Chemical Bank and Citibank, N.A.,  as
                      Agents;  and  Citibank,  N.A., as  Administrative  Agent (incorporated  by  reference to
                      Exhibit 4M of USG Corporation's Registration  Statement No. 35-65804 on Form S-1,  dated
                      July 9, 1993).
           (n)        Second  Amendment to Amended  and Restated Credit Agreement  between USG Corporation and
                      USG Interiors, Inc.  as borrowers; the  Financial Institutions listed  on the  signature
                      pages  thereof, as  Senior Lenders; Bankers  Trust Company, Chemical  Bank and Citibank,
                      N.A., as Agents; and Citibank, N.A., as Administrative Agent.                             **
           (o)        Letter of Credit Issuance and  Reimbursement Agreement dated as  of May 6, 1993  between
                      USG  Interiors, Inc. and  Chemical Bank (incorporated  by reference to  Exhibit 10.12 of
                      Form 8-K filed by USG Corporation on May 7, 1993).
           (p)        Amended and  Restated Collateral  Trust Agreement  dated as  of May  6, 1993  among  USG
                      Corporation,  USG Interiors,  Inc. and USG  Foreign Investments, Ltd.,  as grantors, and
                      Wilmington Trust Company and William J. Wade, as Trustees (incorporated by reference  to
                      Exhibit 10.6 of Form 8-K filed by USG Corporation on May 7, 1993).
           (q)        Amended  and  Restated  Company Pledge  Agreement  dated as  of  May 6,  1993  among USG
                      Corporation, Wilmington Trust Company and William J. Wade (incorporated by reference  to
                      Exhibit 10.7 of Form 8-K filed by USG Corporation on May 7, 1993).
           (r)        Amended  and Restated  Subsidiary Pledge  Agreement dated  as of  May 6,  1993 among USG
                      Interiors, Inc., Wilmington Trust Company and William J. Wade (incorporated by reference
                      to Exhibit 10.8 of Form 8-K filed by USG Corporation on May 7, 1993).
           (s)        Amended and Restated  Subsidiary Pledge  Agreement dated  as of  May 6,  1993 among  USG
                      Foreign Investments, Ltd., Wilmington Trust Company and William J. Wade (incorporated by
                      reference to Exhibit 10.9 of Form 8-K filed by USG Corporation on May 7, 1993).
           (t)        Amended  and Restated Share Pledge  Agreement dated as of May  6, 1993 among USG Foreign
                      Investments, Ltd.,  Wilmington  Trust  Company  and William  J.  Wade  (incorporated  by
                      reference to Exhibit 10.10 of Form 8-K filed by USG Corporation on May 7, 1993).
           (u)        Amended  and  Restated  Deed  of Charge  dated  as  of  May 6,  1993  among  USG Foreign
                      Investments, Ltd.,  Wilmington  Trust  Company  and William  J.  Wade  (incorporated  by
                      reference to Exhibit 10.11 of Form 8-K filed by USG Corporation on May 7, 1993).
           (v)        Amended  and Restated Company Guaranty  dated as of May 6,  1993 made by USG Corporation
                      (incorporated by reference to Exhibit 10.3 of  Form 8-K filed by USG Corporation on  May
                      7, 1993).
           (w)        Amended  and Restated Subsidiary Guaranty dated as of May 6, 1993 made by USG Interiors,
                      Inc. (incorporated by reference to Exhibit 10.1 of Form 8-K filed by USG Corporation  on
                      May 7, 1993).
           (x)        Form of Amended and Restated Subsidiary Guaranty dated as of May 6, 1993 made by each of
                      United States Gypsum Company, USG Foreign Investments, Ltd., L&W Supply Corporation, USG
                      Interiors  International, Inc., La Mirada Products Co., Inc., Westbank Planting Company,
                      American Metals  Corporation and  USG  Industries, Inc.  (incorporated by  reference  to
                      Exhibit 10.5 of Form 8-K filed by USG Corporation on May 7, 1993).
           (y)        Consent  and  Agreement dated  as of  August 22,  1991  with respect  to the  Old Credit
                      Agreement dated as of July 1, 1988  (incorporated by reference to Exhibit 10(ai) of  USG
                      Corporation's Form 8-K, dated August 23, 1991).
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
 EXHIBIT
   NO.                                                                                                            PAGE
- ---------                                                                                                       ---------
<C>        <S>        <C>                                                                                       <C>
           (z)        First  Amendment dated as  of March 12, 1993  with respect to  the Consent and Agreement
                      dated as  of  August 22,  1991  (incorporated by  reference  to Exhibit  10(ap)  of  USG
                      Corporation's 1992 Annual Report on Form 10-K, dated March 26, 1993).
           (aa)       Deposit  Agreement dated as of September 19,  1991 (incorporated by reference to Exhibit
                      10(aq) of USG Corporation's 1992 Annual Report on Form 10-K, dated March 26, 1993).
           (ab)       First Amendment dated as  of March 12,  1993 to the  Deposit Agreement (incorporated  by
                      reference  to Exhibit 10(ar) of USG Corporation's 1992 Annual Report on Form 10-K, dated
                      March 26, 1993).
           (ac)       Agreement among USG Corporation and  the Ad Hoc Committee of  Holders of 13 1/4%  Senior
                      Subordinated  Debentures  of  USG Corporation  due  2000 (incorporated  by  reference to
                      Exhibit 10(aq)  of Amendment  No.  4 to  USG  Corporation's Registration  Statement  No.
                      33-40136 on Form S-4).
           (ad)       Letter  Agreement dated February 25, 1993  among USG Corporation, Water Street Corporate
                      Recovery Fund  I  L.P.,  The  Goldman  Sachs  Group,  L.P.  and  Goldman,  Sachs  &  Co.
                      (incorporated  by reference to Exhibit 10(au) of USG Corporation's 1992 Annual Report on
                      Form 10-K, dated March 26, 1993).
           (ae)       First Amendment to Letter Agreement dated February 22, 1994 among USG Corporation, Water
                      Street Corporate Recovery  Fund I,  L.P., The Goldman  Sachs Group,  L.P., and  Goldman,
                      Sachs & Co.                                                                               **
           (af)       Bankruptcy  Court Order issued  April 23, 1993  confirming USG Corporation's Prepackaged
                      Plan of Reorganization (incorporated by reference to  Exhibit 28.1 of Form 8-K filed  by
                      USG Corporation on May 7, 1993).
           (ag)       Consulting  Agreement  dated  July 1,  1990,  as  amended March  23,  1992,  between USG
                      Corporation and  William  L. Weiss  (incorporated  by  reference to  Exhibit  10(au)  of
                      Amendment No. 4 to USG Corporation's Registration Statement No. 33-40136 on Form S-4).
           (ah)       Consulting Agreement dated May 6, 1993 between USG Corporation and Jack D. Sparks.        **
           (ai)       Consulting Agreement dated August 11, 1993 between USG Corporation and James W. Cozad.    **
           (aj)       1993  Annual Management Incentive Program --  USG Corporation (incorporated by reference
                      to Exhibit 10(b)  of Amendment  No. 1 to  USG Corporation's  Registration Statement  No.
                      33-61152 on Form S-1).
           (ak)       Form  of Employment Agreement dated  May 12, 1993 (incorporated  by reference to Exhibit
                      10(h) of Amendment  No. 1 to  USG Corporation's Registration  Statement No. 33-61152  on
                      Form S-1).
           (al)       Amendment  of Termination Compensation Agreements  (incorporated by reference to Exhibit
                      10(j) of Amendment  No. 1 to  USG Corporation's Registration  Statement No. 33-61152  on
                      Form S-1).
           (am)       Form  of Nonqualified  Stock Option  Agreement effective  June 1,  1993 (incorporated by
                      reference to  Exhibit  10(l)  of  Amendment No.  1  on  USG  Corporation's  Registration
                      Statement No. 33-61152 on Form S-1).
           (an)       Form of Nonqualified Stock Option Agreement with Anthony J. Falvo, Jr. effective June 1,
                      1993 (incorporated by reference to Exhibit 10(m) of Amendment No. 1 to USG Corporation's
                      Registration Statement No. 33-61152 on Form S-1).
           (ao)       Form of First Amendment to Amended and Restated Collateral Trust Agreement (incorporated
                      by  reference to  Exhibit 10(w)  of Amendment  No. 1  to USG  Corporation's Registration
                      Statement No. 33-61152 on Form S-1).
           (ap)       Form of First  Amendment to Amended  and Restated Subsidiary  Guaranty (incorporated  by
                      reference  to  Exhibit  10(ae) of  Amendment  No.  2 to  USG  Corporation's Registration
                      Statement No. 33-61152 on Form S-1).
           (aq)       First Amendment to Management Performance Plan,  effective November 15, 1993, and  dated
                      February 1, 1994.                                                                         **
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
 EXHIBIT
   NO.                                                                                                            PAGE
- ---------                                                                                                       ---------
<C>        <S>        <C>                                                                                       <C>
           (ar)       Modification  letter dated February 1, 1994 to Nonqualified Stock Option Agreement dated
                      June 1, 1993 between USG Corporation and Eugene B. Connolly.                              **
           (as)       Form of Nonqualified Stock Option Agreement effective February 9, 1994.                   **
           (at)       Executive Consulting  Agreement effective  March  1, 1994  between USG  Corporation  and
                      Anthony J. Falvo, Jr.                                                                     **
      24.  Consents of Experts and Counsel
           (a)        Consent of Arthur Andersen & Co.
           (b)        Consents of counsel (included in Exhibit 5).
      25.  Power of Attorney                                                                                    **
</TABLE>
<PAGE>

                         APPENDIX TO FORM S-1

The following graphics have been omitted from the EDGAR submission
to Form S-1:


Inside front cover page of Prospectus:

     An assortment of four photographs of the Corporation's
     products and applications of those products.


Page 33:

     A line graph depicting United States gypsum wallboard
     industry shipments and United States total housing starts
     for the years 1982 through 1993 was replaced with a table
     providing such data.


Inside back cover page of Prospectus:

     An assortment of four photographs of the Corporation's
     products and applications of those products.



<PAGE>

                                                                     Exhibit 5



                                        March 9, 1994




Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549

Ladies and Gentlemen:

          We have acted as special counsel to USG Corporation, a Delaware
corporation (the "Corporation"), in connection with the registration of up to
14,375,000 shares of common stock, par value $.10 per share, of the Corporation
pursuant to a Registration Statement on Form S-1 filed with the Securities and
Exchange Commission (the "Commission") on March 9, 1994, which Registration
Statement constitutes Post-Effective Amendment No. 1 to the Registration
Statement (File No. 33-51845) filed with the Commission on January 7, 1994 and
amended on February 16, 1994 and March 3, 1994 (together with exhibits and any
additional amendments thereto, the "Original Registration Statement").  The
Original Registration Statement was declared effective by the Commission on
March 7, 1994. Of the 14,375,000 shares being registered, up to 7,900,000
shares are being sold by the Corporation (the "Primary Shares") and up to
6,495,000 shares are being sold by a selling stockholder (the "Secondary
Shares").  The Secondary Shares were originally issued to the selling
stockholder pursuant to a plan of reorganization under Title 11 of the United
States Code confirmed by a federal bankruptcy court.

          We have examined the Corporation's certificate of incorporation,
bylaws, resolutions of its board of directors and originals, or copies certified
or otherwise identified to our satisfaction, of such other documents, corporate
records and other instruments as we have deemed necessary for the purpose of
this opinion and such other matters of fact and law which we have deemed
necessary in order to render this opinion.

          For the purposes of this opinion, we have assumed the authenticity of
all documents submitted to us as originals, the conformity to the originals of
all documents submitted to us as copies, and the authenticity of the originals
of all documents submitted to us as copies.  We have also assumed the
genuineness of the signatures of persons signing all documents in connection
with which this opinion is rendered, the authority of such persons signing on
behalf of the parties thereto other than the Corporation, and the due
authorization, execution and delivery of all documents by parties thereto other
than the Corporation.

<PAGE>

Securities and Exchange Commission
March 3, 1994
Page 2


          Based upon the foregoing, we are of the opinion that:

          (a)  when, as and if (i) the Registration Statement constituting
Post-Effective Amendment No. 1 shall have become effective pursuant to the
provisions of the Securities Act of 1933, as amended, (ii) the Corporation shall
have received payment in full for the Primary Shares, and (iii) the Primary
Shares shall have been issued in the form and containing the terms described in
the Registration Statement constituting Post-Effective Amendment No. 1, the
resolutions of the Corporation's Board of Directors (and any authorized
committee thereof) authorizing the foregoing and any legally required consents,
approvals, authorizations and other orders of the Commission and any other
regulatory authorities have been obtained, the Primary Shares will be validly
issued, fully paid and nonassessable; and

          (b)  the Secondary Shares were validly issued and are fully paid and
non-assessable.

          We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to us under the heading entitled
"Legal Matters" in the Prospectus which is part of this Registration Statement.

          We do not find it necessary for purposes of this opinion, and
accordingly do not purport to cover herein, the application of the securities or
"Blue Sky" laws of the various states to the sale of the shares.  We render no
opinion as to the laws of any jurisdiction other than the internal law of the
State of Illinois and the United States of America and the internal corporate
law of the State of Delaware.

          This opinion is being furnished to the addressee in connection with
the filing of the Registration Statement, and is not to be used, circulated,
quoted or otherwise relied upon for any other purpose.

                                        Very truly yours,


                                        /s/ KIRKLAND & ELLIS
                                        KIRKLAND & ELLIS


<PAGE>
                                                                   Exhibit 24(a)





                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



     As independent public accountants, we hereby consent to the use in this
registration statement of our reports dated January 31, 1994 included herein
and to all references to our Firm included in this registration statement.





                                             /s/ Arthur Andersen & Co.
                                             ARTHUR ANDERSEN & CO.


Chicago, Illinois,
March 9, 1994


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission