USG CORP
10-K, 1998-02-20
CONCRETE, GYPSUM & PLASTER PRODUCTS
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- --------------------------------------------------------------------------------


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                -----------------
                                    FORM 10-K
                                -----------------

(Mark One)

    X   ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
        ACT OF 1934 (FEE REQUIRED)
                             For fiscal year ended  December 31, 1997

                                                        OR

        TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
        EXCHANGE ACT OF 1934 (NO FEE REQUIRED)
            For   the   transition   period   from _________   to ________.

                          Commission File Number 1-8864
                                 USG CORPORATION
             (Exact name of Registrant as Specified in its Charter)

             Delaware                                   36-3329400
             (State or Other Jurisdiction of       (I.R.S. Employer
             Incorporation or Organization)      Identification No.)

         125 S. Franklin Street, Chicago, Illinois      60606-4678
         (Address of Principal Executive Offices)       (Zip Code)

       Registrant's Telephone Number, Including Area Code: (312) 606-4000
                            -------------------------


       Securities Registered Pursuant to Section 12(b) of the Act:

                                                            Name of Exchange on
      Title of Each Class                                   Which Registered
      -------------------                                   ----------------

                                                        New York Stock Exchange
  Common Stock, $0.10 par value                         Chicago Stock Exchange
  -----------------------------                         ----------------------

                                                        New York Stock Exchange
  Preferred Share Purchase Rights                       Chicago Stock Exchange
  -------------------------------                       ----------------------


  8.5% Senior Notes, Due 2005                           New York Stock Exchange
  ---------------------------                           -----------------------

                                                        New York Stock Exchange
  Warrants                                              Chicago Stock Exchange
  --------                                              ----------------------


           Securities Registered Pursuant to Section 12(g) of the Act:
                                      None
- --------------------------------------------------------------------------------
                                (Title of Class)
     Indicate  by check mark  whether the  registrant  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days.
Yes |X| No  |_|
     Indicate by check mark if disclosure of delinquent  filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. |_|
     Indicate by check mark whether the  registrant  has filed all documents and
reports  required  to be  filed by  Section  12,  13 or 15(d) of the  Securities
Exchange Act of 1934 subsequent to the  distribution of securities  under a plan
confirmed by a court. Yes |X| No |_|
     As of January 31,  1998,  the  aggregate  market  value of USG  Corporation
common  stock held by  nonaffiliates  (based  upon the New York  Stock  Exchange
("NYSE") closing prices) was approximately $2,455,716,000.
     As of January 31, 1998, 47,048,720 shares of common stock were outstanding.

<PAGE>

                       DOCUMENTS INCORPORATED BY REFERENCE



1.     Portions of the  Corporation's  1997 Annual Report to  Stockholders  are
       incorporated by reference in Parts I, II and IV of this Form 10-K Report.

2.     The  Corporation's  definitive Proxy Statement for use in connection with
       the  Annual  Meeting  of  Stockholders  to be  held  on May  13,  1998 is
       incorporated by reference in Part III of this Form 10-K Report.

3.     A list of exhibits  incorporated  by reference is presented in this Form
       10-K Report beginning on page 13.


<TABLE>

                                TABLE OF CONTENTS
<CAPTION>
<S>    <C>    <C>                                                                                              <C>
PART I                                                                                                         Page
- ------                                                                                                         ----
Item   1.     Business........................................................................................   3
Item   2.     Properties......................................................................................   8
Item   3.     Legal Proceedings...............................................................................   9
Item   4.     Submission of Matters to a Vote of Security Holders.............................................   9

PART II
- -------
Item   5.     Market for the Registrant's Common Stock and Related Stockholder Matters........................  10
Item   6.     Selected Financial Data.........................................................................  10
Item   7.     Management's Discussion and Analysis of Results of Operations and Financial Condition...........  10
Item   8.     Financial Statements and Supplementary Data.....................................................  10
Item   9.     Changes in and Disagreements with Accountants on Accounting and Financial Disclosure............  10

PART III
- --------
Item  10.     Directors and Executive Officers of the Registrant..............................................  11
Item  11.     Executive Compensation..........................................................................  12
Item  12.     Security Ownership of Certain Beneficial Owners and Management..................................  12
Item  13.     Certain Relationships and Related Transactions..................................................  12

PART IV
- -------
Item  14.     Exhibits, Financial Statement Schedules and Reports on Form 8-K.................................  13

Signatures....................................................................................................  20
</TABLE>
<PAGE>
                                     PART I


Item 1.  BUSINESS

(a)  General Development of Business

     United States Gypsum Company ("U.S.  Gypsum") was incorporated in 1901. USG
Corporation (together with its subsidiaries,  called "USG" or the "Corporation")
was  incorporated  in Delaware on October 22, 1984. By a vote of stockholders on
December  19,  1984,  U.S.  Gypsum  became  a  wholly  owned  subsidiary  of the
Corporation and the  stockholders of U.S. Gypsum became the  stockholders of the
Corporation, all effective January 1, 1985.

     In 1988,  the  Corporation  incurred  approximately  $2.5  billion  in debt
primarily to finance a plan of  recapitalization  in response to an  unsolicited
takeover attempt. As a result of high leverage and a severe cyclical downturn in
its  constructionbased   markets,  the  Corporation  initiated  a  comprehensive
restructuring  of its debt (the  "Restructuring")  in 1990 that was completed on
May 6, 1993,  through  implementation of a "prepackaged"  plan of reorganization
under United States  bankruptcy law. In accordance  with the  prepackaged  plan,
$1.4 billion of debt and accrued interest was converted into equity and interest
expense  was   significantly   reduced.   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
values as of May 6,  1993.  Excess  reorganization  value,  the  portion  of the
reorganization  value not  attributable  to  specific  assets,  amounted to $851
million  and  was  scheduled  to be  amortized  over  five  years.  Due  to  the
Restructuring and implementation of fresh start accounting, financial statements
subsequent to May 6, 1993,  are not comparable to financial  statements  through
that date.

     Following the  Restructuring,  the  Corporation  was engaged in a financial
strategy of reducing  debt and growing  its gypsum,  ceilings  and  distribution
businesses  through  a  balanced  application  of free cash  flow  between  debt
reduction  and capital  expenditures.  This  strategy had the dual  objective of
reaching a target debt level of $650  million  within  five years and  achieving
investment  grade status with  respect to its senior  public debt issues for the
first time since 1988.  These  objectives  were largely  realized in 1997.  As a
result of refinancings  implemented in 1994 and 1995, combined with various debt
repayments since 1993, the Corporation reduced its total debt to $620 million as
of  December  31,  1997,  from $1,556  million as of May 6, 1993.  In the fourth
quarter of 1997, Standard & Poor's raised its rating of USG's debt to investment
grade BBB. As of December  31,  1997,  Moody's  rating of USG debt was Ba1,  one
level below investment grade. In addition to these  achievements,  the remaining
$83  million  balance  of  excess  reorganization  value  was  eliminated  as of
September 30, 1997. This balance,  which would have been amortized through April
1998, was offset by the elimination of a valuation  allowance in accordance with
SOP 90-7.

     USG's  financial  strategy going forward will be to increase the proportion
of free cash  flow it  spends on  capital  projects,  while  reviewing  possible
applications of its cash for other corporate purposes.


(b)  Financial Information About Industry Segments

     Financial information pertaining to industry segments included in "Notes to
Financial  Statements  - Note  15.  Industry  and  Geographic  Segments"  of the
Corporation's  1997 Annual  Report to  Stockholders  is  incorporated  herein by
reference.


(c)  Narrative Description of Business

     Through its subsidiaries,  USG is a leading manufacturer and distributor of
building  materials   producing  a  wide  range  of  products  for  use  in  new
residential, new nonresidential and repair and remodel construction,  as well as
products used in certain  industrial  processes.  USG's operations are organized
into two core businesses: North American Gypsum and Worldwide Ceilings.


North American Gypsum

Business

     North American  Gypsum,  which  manufactures and markets gypsum and related
products in the United States,  Canada and Mexico,  includes U.S. Gypsum and L&W
Supply  Corporation ("L&W Supply") in the United States,  the gypsum business of
CGC Inc. ("CGC") in Canada and Yeso  Panamericano  S.A. de C.V. in Mexico.  U.S.
Gypsum is the largest  producer  of gypsum  wallboard  in the United  States and
accounted for nearly one-third of total domestic gypsum wallboard sales in 1997.
L&W  Supply is the  country's  largest  distributor  of  wallboard  and  related
products and in 1997  distributed  approximately  10% of all gypsum wallboard in
the  United  States  (including  approximately  27% of U.S.  Gypsum's  wallboard
production).


Products

     North  American  Gypsum  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
institutional  construction.   These  products  provide  aesthetic  as  well  as
sound-dampening  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  provides  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,  sound-dampening  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 for agricultural
and  industrial  customers to use in a number of  applications,  including  soil
conditioning, road repair, fireproofing and ceramics.


Manufacturing

     North  American  Gypsum's  products are  manufactured  at 44 plants located
throughout the United  States,  eastern  Canada and in central  Mexico.  In June
1997,  ground was  broken  for the $110  million  SHEETROCK  wallboard  plant in
Bridgeport,  Ala.,  that was first announced in 1996. This facility is scheduled
to begin  operation in mid-1999.  Construction  is also  underway to build a $90
million facility to manufacture  gypsum wood fiber ("GWF") panels at the Gypsum,
Ohio, plant.  This facility will produce  high-performance  construction  panels
from  synthetic  gypsum,  recycled paper and wood fiber using USG's patented GWF
technology.  Production  is scheduled to begin by the end of 1999. In the fourth
quarter of 1997,  the  Corporation  purchased  through CGC a gypsum  fiber panel
plant in Port Hawkesbury, Nova Scotia, from Louisiana-Pacific  Corporation. This
acquisition  complements  the GWF  business  plan.  Gypsum  wood fiber  products
manufactured  at both plants will be marketed under the FIBEROCK brand name. The
Corporation  also  announced  in 1997 that it will invest $90 million to rebuild
and modernize its East Chicago,  Ind., plant. The existing  SHEETROCK  wallboard
manufacturing  line at the  East  Chicago  plant  will be  replaced  with a new,
state-of-the-art  wallboard  manufacturing  line  and  warehouse  to  serve  the
Midwest/Great Lakes region.  This new wallboard  manufacturing line will have an
annual  capacity of 550 million square feet,  replacing the old production  line
that has approximately 200 million square feet of capacity. The new East Chicago
line is expected to begin production by the end of 1999.

     Gypsum  rock is mined or  quarried  at 14  company-owned  locations  in the
United States and Canada. In 1997, these facilities  provided  approximately 89%
of the gypsum used by the Corporation's plants in North America.  Certain plants
purchase  synthetic  gypsum or natural gypsum rock from various  outside sources
which accounted for  approximately  11% of the gypsum used in the  Corporation's
North American plants.  The Corporation's  geologists  estimate that 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  209  million  tons,  of  which
approximately 66% are located in the United States and 34% in Canada. Additional
reserves of approximately  153 million tons are found 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 9.9 million tons.

     The  Corporation  owns and operates  seven paper mills  located  across the
United  States.  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.

     The  Corporation  does  research  and  development  at the USG Research and
Technology  Center  in  Libertyville,  Ill.  The staff at this  center  provides
specialized technical services to the operating units and do product and process
research and development.  The center is especially  well-equipped  for carrying
out fire, acoustical,  structural and environmental  evaluations of products and
building assemblies.  The center also has an analytical  laboratory for chemical
analysis and characterization of materials.  Development activities can be taken
to the pilot plant level before being transferred to a full-size plant.


Marketing and Distribution

     Distribution is carried out through L&W Supply, building materials dealers,
home  improvement  centers  and  other  retailers,   contractors  and  specialty
wallboard 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.  Based on the  Corporation's  estimates  using
publicly  available data,  internal surveys,  and gypsum wallboard shipment data
from the Gypsum Association, management estimates that during 1997, about 44% of
total  industry  volume  demand  for  gypsum  wallboard  was  generated  by  new
residential  construction  activity,  39% of  volume  demand  was  generated  by
residential and nonresidential repair and remodel activity, 10% of volume demand
was generated by new nonresidential  construction  activity and the remaining 7%
of volume demand was generated by other activities such as exports and temporary
construction.

     L&W Supply,  which was organized in 1971 by U.S. Gypsum,  currently has 176
distribution locations in 34 states. It is a service-oriented  organization that
stocks a wide range of  construction  materials and delivers less than truckload
quantities  of  construction  materials  to a job site and places  them in areas
where work is being done,  thereby reducing or eliminating the need for handling
by  contractors.  Although  L&W Supply  specializes  in  distribution  of gypsum
wallboard (which accounts for approximately  50% of its total net sales),  joint
compound  and other  products  manufactured  primarily by U.S.  Gypsum,  it also
distributes  products  manufactured by USG Interiors such as acoustical  ceiling
tile and grid,  as well as products  of other  manufacturers  including  drywall
metal,  insulation,   roofing  products  and  accessories.   L&W  Supply  leases
approximately 86% of its facilities from third parties.  Usually, initial leases
run from three to five years with a five-year renewal option.


Competition

     The Corporation competes in North America as the largest of 14 producers of
gypsum  wallboard  products and in 1997 accounted for nearly  one-third of total
gypsum  wallboard  sales in the United States.  In 1997, U.S. Gypsum shipped 8.4
billion  square  feet of  wallboard,  the  highest  level  in the  Corporation's
history,  out of total U.S. industry shipments  (including imports) estimated at
26.5 billion  square feet,  also a record.  Principal  competitors in the United
States are: National Gypsum Company,  Georgia-Pacific Corporation,  James Hardie
Gypsum,  The Celotex  Corporation,  Temple-Inland  Forest Products  Corporation,
American Gypsum and several smaller, regional competitors.  Major competitors in
Canada  include BPB  Westroc and  Georgia-Pacific  Corporation.  In Mexico,  the
Corporation's major competitor is Panel Rey.

     L&W  Supply's  largest   competitor,   Gypsum  Management   Supply,  is  an
independent  distributor  with  locations in the  southern,  central and western
United States. There are several regional  competitors,  such as, GDMA/RINKER in
the  southeast  (primarily  in  Florida)  and  Strober  Building  Supply  in the
northeastern  United States. L&W Supply's many local competitors  include lumber
dealers,   hardware  stores,   home  improvement  centers  and  acoustical  tile
distributors.


Worldwide Ceilings

Business

     Worldwide  Ceilings,   which  manufactures  and  markets  interior  systems
products  worldwide,  includes USG Interiors,  Inc., the international  interior
systems  business managed as USG  International  ("USG  International")  and the
ceilings business of CGC.  Worldwide  Ceilings is a leading supplier of interior
ceiling products used primarily in commercial  applications.  In 1997, Worldwide
Ceilings was estimated to be the largest producer of ceiling grid and the second
largest producer of ceiling tile in the world.


Products

     Worldwide Ceilings manufactures and markets ceiling grid, ceiling tile, and
wall  systems  and, in Europe and Asia  Pacific,  access  floor  systems.  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.  USG
Interiors'  significant trade names include the AURATONE and ACOUSTONE brands of
ceiling tile and the DX,  FINELINE,  CENTRICITEE,  CURVATURA  and DONN brands of
ceiling grid.


Manufacturing

     Worldwide Ceilings' products are manufactured at 20 plants located in North
America,  Europe and Asia  Pacific.  These  include 10 ceiling  grid  plants,  5
ceiling tile plants, 2 plants that produce other interior  products and 3 plants
that produce or prepare raw materials  for ceiling tile and grid.  Principal raw
materials used in the production of Worldwide Ceilings' products include mineral
fiber, steel, perlite, starch 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.  In early  1997,  construction  began on a $35  million  project  that
includes the replacement of two old production lines with one modern, high-speed
line at its  ceiling  tile  plant  in  Cloquet,  Minn.  This  project,  which is
anticipated to be completed by mid-1998, will reduce manufacturing costs and add
capacity to meet increasing  worldwide demand. In 1997, the Corporation acquired
a 60% interest in a joint-venture company operating a ceiling grid manufacturing
facility in Shenzhen, China.

     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, Ill., and at its "Solutions Center"SM in Chicago, Ill.


Marketing and Distribution

     Worldwide  Ceilings'  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.


Competition

     The Corporation  estimates that it is the second largest  producer/marketer
of acoustical ceiling tile in the world.  Principal global  competitors  include
Armstrong   World   Industries,    Inc.   (the   largest   manufacturer),    OWA
Faserplattenwerk  GmbH (Odenwald) and The Celotex  Corporation.  The Corporation
estimates that it is the world's largest manufacturer of ceiling grid. Principal
competitors  in ceiling  grid include WAVE (a joint  venture  between  Armstrong
World  Industries,   Inc.  and  Worthington  Industries)  and  Chicago  Metallic
Corporation.


Other Information

     The Corporation's  plants are substantial users of energy.  Five major fuel
types are used in a mix consisting of 79% natural gas, 10% electricity,  7% oil,
2% coke and 2% purchased hot air. With few  exceptions,  plants that 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. Energy price swap agreements are used by the Corporation
to hedge the cost of certain purchased fuel.

     Neither industry segment has any special working capital requirements or 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 10% of the
Corporation's  1997 or 1996  consolidated  net sales.  Because orders are filled
upon receipt, neither industry segment has any significant backlog.

     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.  No material part of any of the Corporation'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  performs
on-going extensive  research and development  activities and makes the necessary
capital  expenditures  to  maintain  production  facilities  in  good  operating
condition.

     One of the  Corporation's  subsidiaries,  U.S.  Gypsum,  is a defendant  in
asbestos lawsuits alleging both property damage and personal injury. Information
pertaining  to legal  proceedings  included in "Notes to Financial  Statements -
Note 16.  Litigation" of the Corporation's 1997 Annual Report to Stockholders is
incorporated herein by reference.


     (d) Financial  Information About Foreign and Domestic Operations and Export
Sales

     Financial  information  pertaining to foreign and domestic  operations  and
export sales included in "Notes to Financial  Statements - Note 15. Industry and
Geographic  Segments" of the Corporation's 1997 Annual Report to Stockholders is
incorporated herein by reference.


Item 2.  PROPERTIES

     The  Corporation's  plants,  mines,  quarries,  transport  ships  and other
facilities are located in North America, Europe, and Asia Pacific. 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):


North American Gypsum
<TABLE>
Gypsum Wallboard and Other Gypsum Products
<CAPTION>
<S>      <C>                                     <C>                                <C>
         United States                                                              Canada
         -------------                                                              ------                    
         Baltimore, Md.                          Norfolk, Va.                       Hagersville, Ontario
         Boston (Charlestown), Mass.             Oakfield, N.Y.                     Montreal, Quebec
         Detroit (River Rouge), Mich.            Plaster City, Calif.               St. Jerome, Quebec (currently idle)
         East Chicago, Ind.                      Plasterco (Saltville), Va.
         Empire, Nev.                            Santa Fe Springs, Calif.           
         Fort Dodge, Iowa                        Shoals, Ind.                       
         Fremont, Calif.                         Sigurd, Utah
         Galena Park, Texas                      Southard, Okla.
         Gypsum, Ohio                            Sperry, Iowa
         Jacksonville, Fla.                      Stony Point, N.Y.
         New Orleans, La.                        Sweetwater, Texas

         Mexico
         ------        
         Puebla, Puebla
</TABLE>

         

Joint Compound

     Surface  preparation  and joint  treatment  products are produced in plants
located at Chamblee,  Ga.; Dallas, Texas; East Chicago,  Ind.; Fort Dodge, Iowa;
Galena Park,  Texas;  Gypsum,  Ohio;  Jacksonville,  Fla.;  Port Reading,  N.J.;
Sigurd, Utah; Tacoma, Wash. (leased);  Torrance, Calif.;  Hagersville,  Ontario,
Canada;  Montreal,  Quebec,  Canada;  Puebla,  Mexico; and Port Klang,  Malaysia
(leased).


Gypsum Rock

     Gypsum rock is mined or quarried at Alabaster (Tawas City), Mich.;  Empire,
Nev.;  Fort  Dodge,  Iowa;  Oakfield,  N.Y.;  Plaster  City,  Calif.;  Plasterco
(Saltville),  Va.; Shoals, Ind.; Sigurd,  Utah;  Southard,  Okla.; Sperry, Iowa;
Sweetwater,  Texas;  Hagersville,  Ontario, Canada; Little Narrows, Nova Scotia,
Canada;  and Windsor,  Nova  Scotia,  Canada.  Synthetic  gypsum is processed at
Belledune, New Brunswick, Canada.

Mining operations at Oakfield, N.Y., are scheduled to be shut down by mid-1998.


Paper

     Paper for gypsum  wallboard is  manufactured at Clark,  N.J.;  Galena Park,
Texas; Gypsum, Ohio; Jacksonville, Fla.; North Kansas City, Mo.; Oakfield, N.Y.;
and South Gate, Calif.


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
transport  gypsum rock from Nova Scotia to the East Coast plants of U.S. Gypsum.
Excess ship time, when available, is offered for charter on the open market.


Other Products

     A  mica-processing  plant is located at Spruce Pine,  N.C.;  perlite ore is
produced at Grants, N.M.; and drywall metal products are manufactured at Medina,
Ohio (leased). Metal lath, plaster and drywall accessories and light gauge steel
framing products are manufactured at Puebla,  Mexico. Various other products are
manufactured at La Mirada,  Calif.  (adhesives and finishes);  New Orleans,  La.
(lime products);  and Port Hawkesbury,  Nova Scotia,  Canada (gypsum fiber panel
products).


Worldwide Ceilings

Ceiling Tile

     Acoustical  ceiling tile and panels are  manufactured  at: Cloquet,  Minn.;
Greenville,  Miss.;  Walworth,  Wis.; San Juan Ixhuatepec,  Mexico; and Aubange,
Belgium.

Ceiling Grid

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

Other Products

     Access  floor  systems  products are  manufactured  at:  Peterlee,  England
(leased);  and  Port  Klang,  Malaysia  (leased).  Mineral  fiber  products  are
manufactured  at Red Wing,  Minn.  and Walworth,  Wis. Wall system  products are
manufactured at Medina,  Ohio (leased).  Drywall metal products are manufactured
at Prestice, Czech Republic (leased) and Oakville, Ontario, Canada.


Item 3.  LEGAL PROCEEDINGS

     Information pertaining to legal proceedings included in "Notes to Financial
Statements - Note 16.  Litigation"  of the  Corporation's  1997 Annual Report to
Stockholders is incorporated herein by reference.


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

     None during the fourth quarter of 1997.


                                     PART II

Item 5.  MARKET FOR THE REGISTRANT'S COMMON STOCK AND RELATED STOCKHOLDER
         MATTERS

     Information with respect to the principal market on which the Corporation's
common  stock is traded,  the range of high and low market  prices and number of
stockholders  of record included in "Selected  Quarterly  Financial Data" of the
Corporation's  1997 Annual  Report to  Stockholders  is  incorporated  herein by
reference.

     There have been no dividends declared since the third quarter of 1988. Bank
credit  agreements  and other debt  instruments  have  previously  prohibited or
restricted the payment of cash dividends.  Although  currently  permitted within
certain limits under the Corporation's existing debt agreements, the Corporation
is not paying a dividend at this time.

     On November 22, 1996, the  Corporation  entered into a retention  agreement
with an employee, formerly the principal stockholder of a corporation certain of
whose assets were purchased by the Corporation,  whereby the Corporation  agreed
to grant  shares  of  unregistered  common  stock,  $0.10 par  value,  having an
aggregate  value equal to $250,000 in five  separate  annual  installments  each
having a value equal to $50,000,  in reliance on the private offering  exemption
afforded by Section 4 (2) of the Securities Act of 1933, as amended.  The second
annual grant in the amount of 1,062  shares was made on November  24, 1997.  The
unregistered  common  stock  is  restricted  from  transfer,   resale  or  other
disposition until November 22, 2001.


Item 6.  SELECTED FINANCIAL DATA

     Selected financial data included in "Comparative  Five-Year Summary" of the
Corporation's  1997 Annual  Report to  Stockholders  is  incorporated  herein by
reference.


Item 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF RESULTS OF OPERATIONS AND
         FINANCIAL CONDITION

     "Management's   Discussion  and  Analysis  of  Results  of  Operations  and
Financial  Condition" of the Corporation's 1997 Annual Report to Stockholders is
incorporated herein by reference.


Item 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

     Financial  statements  and  supplementary  data  included in  "Consolidated
Statement of Earnings," "Consolidated Balance Sheet," "Consolidated Statement of
Cash Flows," "Notes to Financial  Statements" and "Report of Independent  Public
Accountants"  of  the  Corporation's  1997  Annual  Report  to  Stockholders  is
incorporated herein by reference.


Item 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE.

     None.

                                    PART III


Item 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     Information about directors has been omitted from this report as it will be
filed with the  Securities and Exchange  Commission  (the "SEC") in a definitive
proxy statement  pursuant to Regulation 14A, which definitive proxy statement is
incorporated herein by reference.

Executive Officers of the Registrant (as of February 1, 1998)

<PAGE>
<TABLE>
                                                                                                      Has Held
             Name, Age                                                                                 Present
        and Present Position               Prior Business Experience in Past Five Years             Position Since
<CAPTION>
- ----------------------------------------------------------------------------------------------- --------------------
<S>                                 <C>                                                                 <C>
William C. Foote, 46                President and Chief Executive Officer, L&W Supply Corporation       June 1997
Chairman and Chief Executive        from September 1991 to January 1994; President and Chief
Officer                             Executive Officer, USG Interiors, Inc. from January 1993 to 
                                    January 1994;  President and Chief Operating Officer
                                    from January 1994 to January 1996; President
                                    and Chief  Executive  Officer to April 1996;
                                    Chairman,   President  and  Chief  Executive
                                    Officer from April 1996 to June 1997.

P. Jack O'Bryan, 62                 President and Chief Executive Officer, United States Gypsum         June 1997
President and Chief Operating       Company to January 1993; Senior Vice President and Chief
Officer; President and Chief        Technology Officer, USG Corporation to August 1994; Senior Vice
Executive Officer, United           President - Worldwide Manufacturing and Technology to October
States Gypsum Company; President    1995; Executive Vice President- Worldwide Ceilings to September
and Chief Executive Officer,        1996; President and Chief Executive Officer, USG Interiors, Inc.
USG Interiors, Inc.                 since October 1995; Executive Vice President - Operations to June
                                    1997.

Richard H. Fleming, 50              Vice President and Treasurer to January 1994; Vice President        January 1995
Senior Vice President and Chief     and Chief Financial Officer to January 1995.
Financial Officer

Arthur G. Leisten, 56               Senior Vice President and General Counsel to March 1993; Senior     February 1994
Senior Vice President and General   Vice President, General Counsel and Secretary to February 1994.
Counsel

Harold E. Pendexter, Jr., 63        Same position.                                                      January 1991
Senior Vice President and Chief
Administrative Officer

Raymond  T.  Belz,   57             Vice   President   Financial   Services  and  Financial
Vice President and Controller;      Administration, United States Gypsum Company to January 1994;       September  1996
Vice  President Financial           Vice  President and Controller, USG Corporation, Vice
Operations, North American Gypsum   President Financial Services, United States Gypsum Company to 
and Worldwide Ceilings              January 1995; Vice President and Chief Financial Officer, North
                                    American Gypsum from January 1995 to September 1996; Vice President
                                    and Controller since January 1995.

Brian W. Burrows, 58                Same position.                                                      March 1987
Vice President, Research and
Technology

John E. Malone, 54                  Vice President and Controller, USG Corporation to January 1994;     January 1994
Vice President and Treasurer        Vice President - Finance, USG International, from March 1993 to
                                    February 1995.

Daniel J. Nootens, 59               Vice President Manufacturing, United States Gypsum Company from     June 1997
Vice President; Executive           November 1990 to July 1994; Executive Vice President & Chief
Vice President, Strategic           Operating Officer, United States Gypsum Company from July 1994
Manufacturing & Capital             to September 1996; Executive Vice President-Operations, North
Investments, North American         American Gypsum from September 1996 tp June 1997.
Gypsum and Worldwide Ceilings


Robert B. Sirgant, 57               Vice President, National Accounts and Marketing - East, United      January 1995
Vice President, Corporate           States Gypsum Company to July 1994; Vice President, National
Accounts                            Accounts, United States Company to January 1995.

Dean H. Goossen, 50                 Vice President, General Counsel and Secretary, Xerox Financial
Corporate Secretary                 Services Life Insurance Company to February 1993; Assistant         February 1994
                                    Secretary, USG Corporation to February 1994.
</TABLE>
<PAGE>

Item 11. EXECUTIVE COMPENSATION

   Information  required by Item 11 has been omitted from this report as it will
be filed with the SEC in a definitive  proxy  statement  pursuant to  Regulation
14A, which definitive proxy statement is incorporated herein by reference.


Item 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     Information  required  by Item 12 has been  omitted  from this report as it
will  be  filed  with  the  SEC in a  definitive  proxy  statement  pursuant  to
Regulation  14A, which  definitive  proxy  statement is  incorporated  herein by
reference.


Item 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     Information  required  by Item 13 has been  omitted  from this report as it
will  be  filed  with  the  SEC in a  definitive  proxy  statement  pursuant  to
Regulation  14A, which  definitive  proxy  statement is  incorporated  herein by
reference.


                                     PART IV


Item 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

(a) The following documents are filed as part of this 10-K Report:

     1.  The consolidated  financial  statements,  notes to financial statements
         and  report  of  independent   public   accountants   included  in  the
         Corporation's  1997 Annual Report to Stockholders  and listed below are
         incorporated herein by reference:

         Consolidated  Statement  of Earnings - Years ended  December  31, 1997,
         1996 and 1995.

         Consolidated Balance Sheet - As of December 31, 1997 and 1996.

         Consolidated  Statement of Cash Flows - Years ended  December 31, 1997,
         1996 and 1995.

         Notes to Financial Statements.

         Report of Independent Public Accountants.



     2.  Supplemental Financial Statement Schedules:

         Schedule II - Valuation and Qualifying Accounts.

         Report  of  Independent   Public  Accountants  With  Respect  to
         Financial Statement Schedule.

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


     3   Exhibits (Reg. S-K, Item 601):

<TABLE>
   Exhibit
     No.                                                                                      Page
   -------                                                                                    ----
<CAPTION>
<S>  <C>                                                                                      <C> 
                                                                                
     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 March 5, 1987 of a Special  Committee created by the
Board of  Directors  of USG  Corporation  relating  to USG  Corporation's  8.75%
Debentures  due  2017   (incorporated  by  reference  to  Exhibit  4(c)  of  USG
Corporation's  1993  Annual  Report on Form 10-K,  dated  March 14,  1994).

     (c) Resolutions  dated February 1, 1994 of a Special  Committee  created by
the Board of Directors of USG Corporation  relating to USG  Corporation's  9.25%
Senior  Notes  due  2001  (incorporated  by  reference  to  Exhibit  4(f) of USG
Corporation's Registration No. 33- 51845 on Form S-1, dated February 16, 1994).

     (d) Resolutions  dated August 3, 1995 of a Special Committee created by the
Board of Directors of USG Corporation  relating to USG Corporation's 8.5% Senior
Notes due 2005  (incorporated by reference to Exhibit 4(b) of Amendment No. 3 to
USG  Corporation's  Registration  Statement No. 33-60563 on Form S-3, dated July
28, 1995).

     (e) 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).

     (f) 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).

     (g) 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).

     (h) 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.


     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) First Amendment to Management  Performance Plan, effective November 15,
1993 and dated February 1, 1994  (incorporated by reference to Exhibit 10(aq) of
Amendment No. 1 of USG Corporation's Registration Statement No. 33-51845 on Form
S-1).

     (c) Amendment and  Restatement of USG Corporation  Supplemental  Retirement
Plan, effective as of July 1, 1997 and dated August 25, 1997.                                   21

     (d)  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).                                                                                      

     (e) Indemnification  Agreements (incorporated by reference to Exhibit 10(g)
of Amendment No. 1 to USG Corporation's Registration No. 33-51845 on Form S-1).

     (f)   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).

     (g) Consulting  Agreement dated August 11, 1993 between USG Corporation and
James W. Cozad (incorporated by reference to Exhibit 10(aw) in USG Corporation's
Registration Statement 33- 51845, on Form S-1).

     (h) 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).

     (i)  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).

     (j) Credit  Agreement  dated as of July 27, 1995 among USG  Corporation and
the  Banks  listed on the  signature  page  thereto  and  Chase  Manhattan  Bank
(formerly Chemical Bank) as Agent (incorporated by reference to Exhibit 99(a) of
Amendment No. 3 to USG Corporation's Registration Statement No. 33-60563 on Form
S-3, dated July 28, 1995).

     (k) Amendment  No. 1, dated as of February 1, 1996 to the Credit  Agreement
(incorporated  by reference to Exhibit  10(q) of USG  Corporation's  1995 Annual
Report on Form 10-K, dated February 29, 1996).

     (l) Amendment No. 2, dated as of May 14, 1997, to the Credit Agreement.                    38
                       
     (m)  1995  Long-Term  Equity  Plan  of  USG  Corporation  (incorporated  by
reference to Annex A to USG Corporation's  Proxy Statement and Proxy dated March
31, 1995).

     (n) 1997 Annual  Management  Incentive  Program - USG  Corporation.                        47 

     (o) Omnibus Management Incentive Plan (incorporated by reference to Annex A
to USG Corporation's Proxy Statement and Proxy dated March 28, 1997).

     (p) First  Amendment  to Omnibus  Management  Incentive  Plan,  dated as of
November 11, 1997.                                                                              55

     (q) Amended  and  Restated  Stock  Compensation  Program  for  Non-Employee
Directors of USG Corporation, dated July 1, 1997. 56


     13 Portions of USG Corporation's 1997 Annual Report to Stockholders.  (Such
report is not  deemed to be filed  with the  Commission  as part of this  Annual
Report on Form 10-K, except for the portions thereof  expressly  incorporated by
reference.)                                                                                     64

     21 Subsidiaries                                                                            90

     23 Consents of Experts and Counsel                                                         91

     24 Power of Attorney                                                                       92

     27 Financial Data Schedule                                                                 93


(b) Reports on Form 8-K:

     No reports on Form 8-K were filed during the fourth quarter of 1997.
</TABLE>

<TABLE>

                             Index to exhibits filed
                       with the Annual Report on Form 10-K
                      for the year ended December 31, 1997

Exhibit                                                                                            Page
<CAPTION>
<S>      <C>                                                                                            <C>
10(c)    Amendment and Restatement of USG Corporation Supplemental Retirement Plan                      21

10(l)    Amendment No. 2 to the Credit Agreement                                                        38

10(n)    1997 Annual Management Incentive Program - USG Corporation                                     47

10(p)    First Amendment to Omnibus Management Incentive Plan                                           55

10(q)    Amended and Restated Stock Compensation Program for Non-Employee Directors                     56

13       Portions of USG Corporation's 1997 Annual Report to Stockholders                               64

21       Subsidiaries                                                                                   90

23       Consent of Experts                                                                             91

24       Power of Attorney                                                                              92

27       Financial Data Schedule                                                                        93
</TABLE>



If you wish to receive a copy of any exhibit,  it may be obtained,  upon payment
of reasonable expenses, by writing to:

                         Dean H. Goossen, Corporate Secretary
                         USG Corporation
                         Department #188
                         P.O. Box 6721
                         Chicago, IL  60680-6721
<PAGE>
<TABLE>

                                                  USG CORPORATION
                                                    SCHEDULE II
                                         VALUATION AND QUALIFYING ACCOUNTS
                                               (Dollars in millions)

                                                                          Provision      Receivables
                                                                         Charged to      Written Off
                                                           Beginning      Costs and     and Discounts     Ending
                                                            Balance       Expenses         Allowed        Balance
                                                            -------       --------         -------        -------
<CAPTION>
<S>                                                       <C>            <C>            <C>             <C>
Year ended December 31, 1997:

     Doubtful accounts.................................   $     14       $      5       $     (5)       $    14
     Cash discounts....................................          3             52            (52)             3


Year ended December 31, 1996:

     Doubtful accounts.................................         11              7             (4)            14
     Cash discounts....................................          3             46            (46)             3


Year ended December 31, 1995:

     Doubtful accounts.................................         11              6             (6)            11
     Cash discounts....................................          3             44            (44)             3
</TABLE>



                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
                  WITH RESPECT TO FINANCIAL STATEMENT SCHEDULE

     We have audited in accordance with generally  accepted auditing  standards,
the  consolidated  financial  statements  included in USG  Corporation's  annual
report to  stockholders  incorporated  by reference in this Form 10-K,  and have
issued our report  thereon  dated  January 22, 1998.  Our audit was made for the
purpose of forming an opinion on the consolidated  financial statements taken as
a whole. The financial  statement  schedule on page 18 is the  responsibility of
the Corporation's management and is presented for purposes of complying with the
Securities and Exchange  Commission's  rules and is not part of the consolidated
financial statements. The financial statement schedule has been subjected to the
auditing  procedures  applied  in  the  audit  of  the  consolidated   financial
statements  and, in our  opinion,  fairly  states in all  material  respects the
financial data required to be set forth therein in relation to the  consolidated
financial statements taken as a whole.



                                               /s/Arthur Andersen LLP
                                               ----------------------
                                               ARTHUR ANDERSEN LLP
Chicago, Illinois
January 22, 1998



                                   SIGNATURES


     Pursuant  to the  requirements  of  Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.


                                             USG CORPORATION
February 20, 1998


                                              By: /s/ Richard H. Fleming
                                              ---------------------------
                                              Richard H. Fleming
                                              Senior Vice President and
                                              Chief Financial Officer


     Pursuant to the  requirements of the Securities  Exchange Act of 1934, this
report  has  been  signed  below  by the  following  persons  on  behalf  of the
Registrant and in the capacities and on the date indicated.



/s/ William C. Foote                                February 20, 1998
- --------------------------
WILLIAM C. FOOTE
Chairman and Chief Executive Officer
(Principal Executive Officer)


/s/ Richard H. Fleming                              February 20, 1998
- ---------------------------
RICHARD H. FLEMING
Senior Vice President and
Chief Financial Officer
(Principal Financial Officer)


/s/ Raymond T. Belz                                  February 20, 1998
- ---------------------------
RAYMOND T. BELZ
Vice President and Controller
(Principal Accounting Officer)


ROBERT L. BARNETT, KEITH A. BROWN,            )    By:/s/ Richard H. Fleming
W. H. CLARK, W. DOUGLAS FORD,                 )    Richard H. Fleming
JAMES C. COTTING, LAWRENCE                    )    Attorney-in-fact
M. CRUTCHER, DAVID W. FOX,                    )    Pursuant to Power of Attorney
PHILIP C. JACKSON, JR., MARVIN E. LESSER,     )    (Exhibit 24 hereto)
P. JACK O'BRYAN, JOHN B. SCHWEMM,             )    February 20, 1998
JUDITH A. SPRIESER, Directors                 )



                                  EXHIBIT 10(c)



                  USG CORPORATION SUPPLEMENTAL RETIREMENT PLAN

             (As Amended and Restated Effective as of July 1, 1997)




                             McDermott, Will & Emery
                                Chicago, Illinois



                  USG CORPORATION SUPPLEMENTAL RETIREMENT PLAN


                                    SECTION 1

                                  Introduction

1.1.  The Plan,  the Company.  Effective  January 1, 1976 UNITED  STATES  GYPSUM
COMPANY  established UNITED STATES GYPSUM COMPANY  SUPPLEMENTAL  RETIREMENT PLAN
(the  "Plan").  On  January  1,  1985  UNITED  STATES  GYPSUM  COMPANY  became a
wholly-owned  subsidiary  of USG  CORPORATION  and effective as of that date USG
CORPORATION  was  substituted  for UNITED STATES GYPSUM COMPANY as the "Company"
under  the  Plan  and the  name  of the  Plan  was  changed  to USG  CORPORATION
SUPPLEMENTAL  RETIREMENT  PLAN.  The term  "Company"  as used in the Plan  means
UNITED STATES GYPSUM COMPANY up to January 1, 1985 and USG CORPORATION  (and any
successor thereto) on and after that date. The provisions of this subsection and
the following  provisions of the Plan constitute an amendment and restatement of
the  Plan,  as  previously  amended,  effective  as of July 1,  1997  (the  "New
Effective Date"), subject to any subsequent amendments.


1.2.  Employers.  Each  subsidiary of the Company that is an employer  under USG
Corporation  Retirement  Plan (the  "Retirement  Plan") or under USG Corporation
Investment Plan (the  "Investment  Plan") shall be an "Employer" under this Plan
unless  specified  to the  contrary  by the  Company by  writing  filed with the
Committee described in subsection 1.4.


1.3.  Purpose.  The  Company and certain of its  subsidiaries  maintain  and are
employers under the Retirement Plan and the Investment Plan, each of which plans
is intended to meet the  requirements of a "qualified plan" under Section 401(a)
of the Internal Revenue Code. The purpose of this Plan, a nonqualified  plan, is
to provide for eligible  employees benefits that could have been earned and paid
under the Retirement and Investment Plans and under any other qualified  defined
benefit and defined  contribution  plans  maintained by the controlled  group of
corporations  of which the Company is a member  ("other USG Defined  Benefit and
Defined Contribution Plans") but for the following limitations:

     (a)  Section   401(a)(4)  of  the  Internal   Revenue  Code  requires  that
contributions or benefits  provided under a qualified plan must not discriminate
in favor of highly  compensated  employees  and  therefore  amounts  deferred by
employees,  if  any,  under  the  Company's  management  incentive  compensation
programs  until their  retirement or other  termination of employment may not be
considered as a part of their employment  compensation in determining the amount
of their  contributions,  benefits provided with respect to their contributions,
and employer  provided  benefits under the  Retirement and Investment  Plans and
other USG Defined Benefit and Defined Contribution Plans.

     (b) Sections  401(a)(17) and 404(l) of the Internal  Revenue Code limit the
amount of  employees'  annual  compensation  that may be taken  into  account in
determining  the  benefits  that  may be paid to them  from the  Retirement  and
Investment  Plans and other USG Defined Benefit and Defined  Contribution  Plans
and the  deductible  Employer  contributions  that may be made to those plans to
provide such benefits.

     (c) Sections  401(k) and 401(m) of the  Internal  Revenue Code require that
employees'  before-tax  contributions and Employer matching  contributions under
USG Defined  Contribution Plans be tested to prevent  discrimination in favor of
highly compensated employees and as a result of such tests employees' before-tax
contributions and shares of Employer matching contributions under such plans may
be limited.

     (d)  Section  402(g) of the  Internal  Revenue  Code  limits  the amount of
before-tax contributions that an employee may make under the Investment Plan and
other USG Defined Contribution Plans.

     (e) Section 415 of the  Internal  Revenue  Code places  limitations  on the
amount of benefits that may be paid from and  contributions  that may be made to
the Retirement  Plan and the Investment  Plan and other USG Defined  Benefit and
Defined Contribution Plans.

The Plan also allows  Participants to elect to make before-tax  contributions to
the Plan in excess of the amount of  contributions  permitted under the terms of
the  Investment  Plan. In no event shall any benefits be payable under this Plan
that would  duplicate  benefits that become payable under any other qualified or
nonqualified  plan  maintained by the Company,  any other  Employer or any other
member of the controlled group of corporations of which the Company is a member.


1.4.  Plan  Administration.  The  Plan is  administered  by the  committee  (the
"Committee")  that is responsible for  administration of the Retirement Plan and
the Investment Plan. To the extent  appropriate,  the Committee has,  concerning
Part A Supplemental Benefits and Part A Supplemental Death Benefits described in
Section 3, the same  powers,  rights,  duties and  obligations  it has as to the
Retirement  Plan  and,  concerning  Part  B  Supplemental  Benefits  and  Part B
Supplemental  Death  Benefits  described in Section 4, the same powers,  rights,
duties and obligations it has as to the Investment Plan,  including the right to
require the  completion  of such forms or  applications  with respect to benefit
payments as it deems appropriate.


1.5. Preservation of Benefits.  Benefits shall be provided under the Plan on and
after the New  Effective  Date to, or with respect to,  former  employees of the
Company who became entitled to such benefits before that date in accordance with
the  terms of the Plan as in  effect  at the time of their  retirement  or other
termination of employment.  If an employee of an Employer was  participating  in
the  Plan  immediately  prior  to  the  New  Effective  Date  and  continues  to
participate in the Plan on and after that date, benefits payable under Section 3
of this Plan to, or with respect to, such  employee  shall not be less than what
they  would  have  been if the Plan as in  effect  immediately  prior to the New
Effective  Date continued in effect on and after that date without  change,  but
only taking into account for this purpose benefits accrued by the employee under
the  Retirement  Plan and all other USG Defined  Benefit  Plans prior to the New
Effective  Date,  and benefits  payable under Section 4 of this Plan to, or with
respect  to,  such  employee  shall not be less than his  account  described  in
subsection  4.6  determined  as of the New  Effective  Date and as  subsequently
adjusted pursuant to subsection 4.6 to reflect deemed investment of the account.


                                    SECTION 2

                          Eligibility for Participation


2.1.  Covered  Employee.  A "Covered  Employee" means an employee of an Employer
under the Plan who is a highly compensated employee as defined in Section 414(q)
of the Internal Revenue Code, unless the Committee  specifies that such employee
shall not be  considered  as a Covered  Employee  for any purpose of the Plan by
writing  filed with the  Secretary  of the  Company  prior to, or within 30 days
after, the date the employee  otherwise would become eligible for  participation
in the Plan.


2.2.  Eligibility.  Subject to the conditions and  limitations of the Plan, each
employee of an  Employer  who was a  "Participant"  in the Plan on June 30, 1997
shall  continue  as a  Participant  in the Plan after that date.  Subject to the
conditions and limitations of the Plan, each other employee of an Employer shall
become eligible to enroll in this Plan and become a  "Participant"  on the first
date occurring on or after the New Effective Date on which:

     (a) he is a Covered Employee; and

     (b) the benefits he accrues, or the contributions he is required to make or
could elect to make, or his share of employer derived contributions under one or
more of the Retirement  Plan, the Investment Plan, and other USG Defined Benefit
and Defined  Contribution Plans, are less than what they would have been (or, as
to  elected  contributions,  could  have  been) as a result  of the  limitations
described in subsection 1.3.

Each  employee will be notified of the date he is eligible to enroll in the Plan
and become a  Participant  and will be  notified  of the  enrollment  procedures
established by the Committee.


2.3.  Period  of  Participation.  An  employee  of an  Employer  who  becomes  a
Participant  in  this  Plan  will  continue  as a  Participant  in the  Plan  in
accordance with its provisions  until all benefits to which he is entitled under
the Plan  have been  distributed  to him.  However,  a  Participant  will not be
entitled to make contributions or accrue additional  benefit  entitlements under
this Plan for any period during which he is not a Covered Employee.


                                    SECTION 3

                          Part A Supplemental Benefits


3.1.  Intent.  The Employers  intend that  benefits be provided  pursuant to the
provisions  of this Section 3 that are  actuarially  equivalent  to the benefits
that would have been provided  under the  Retirement  Plan and other USG Defined
Benefit Plans if the  limitations  described in subsection 1.3 did not exist, if
before-tax  contributions  the Participant  makes pursuant to subsection 3.3 had
been made under the Retirement Plan and any other applicable USG Defined Benefit
Plan on an after-tax basis, and if amounts deferred under the Company's 1989 and
subsequent   management  incentive   compensation  programs  or  deferred  under
subsections  4.3 and 4.4 of the Plan had not been  deferred  but instead paid at
the proper time and  included in  employment  compensation  for  purposes of the
Plans, provided that the contribution requirement described in subsection 3.3 is
met.


3.2. Limited Benefits, Unlimited Benefits, Part A Supplemental Benefits and Part
A Supplemental Death Benefits. For purposes of this Section 3, the term "Limited
Benefits"  means the  benefits  that  become  payable  to or with  respect  to a
Participant  under the Retirement  Plan and all other USG Defined Benefit Plans.
The term "Unlimited  Benefits" means the benefits that would have become payable
to or  with  respect  to a  Participant  under  such  Plans  if the  limitations
described in  subsection  1.3 did not exist,  if  before-tax  contributions  the
Participant  makes pursuant to subsection 3.3 had been made under the Retirement
Plan and any other  applicable USG Defined  Benefit Plan on an after-tax  basis,
and if  amounts  deferred  by the  Participant  under  the  Company's  1989  and
subsequent   management  incentive   compensation  programs  or  deferred  under
subsections  4.3 and 4.4 of the Plan had not been  deferred  but instead paid to
the  Participant  at the proper time during  employment and then included in the
Participant's employment compensation for purposes of those Plans. Benefits that
become payable under this Section 3 to a Participant  are referred to as "Part A
Supplemental Benefits". Benefits that become payable under this Section 3 to any
person as a result  of the death of a  Participant  are  referred  to as "Part A
Supplemental Death Benefits".


3.3. Participant Contribution Requirement. A Participant's entitlement to Part A
Supplemental  Benefits  and Part A  Supplemental  Death  Benefits  described  in
subsections  3.5  and  3.7 is  subject  to  the  Participant  making  before-tax
contributions  under  this Plan.  Such  contributions  must equal the  after-tax
contributions  the  Participant  would  have  been  required  to make  under the
Retirement Plan and all other USG Defined Benefit Plans:

     (a) if amounts  contributed on a before-tax basis under this Plan, deferred
by  the  Participant  under  the  Company's  management  incentive  compensation
programs,  or deferred under subsections 4.3 and 4.4 of the Plan had not been so
contributed  or deferred but paid to the  Participant  at the proper time during
employment and then included in the  Participant's  employment  compensation for
purposes of those plans;

     (b) if the annual compensation  limitation imposed by Section 401(a)(17) of
the Internal Revenue Code (as described in subparagraph 1.3(b)) did not apply to
the Participant; and

     (c) if the  limitations  imposed under Section 415 of the Internal  Revenue
Code (as described in subparagraph 1.3(f)) did not apply to the Participant.

Notwithstanding  the  foregoing,  a  Participant  may be  eligible  for and make
after-tax contributions under the Retirement Plan or another USG Defined Benefit
Plan even though the limitations  described above in this subsection may prevent
or limit his accrual of benefits under such plans. In such case, the Participant
will accrue benefits under this Plan based on such after-tax contributions as if
they had been made under this Plan on a before-tax  basis.  The Committee  shall
maintain  a  bookkeeping  account  in the  name of each  Participant  who  makes
before-tax  contributions  under this  subsection to reflect such  contributions
and, where required, interest on such contributions. The term "interest" as used
in this Plan with respect to Participants'  before-tax  contributions made under
this  subsection  shall mean  "interest" as defined in the Retirement  Plan with
respect to  participant  contributions  under that plan but shall not  include a
higher rate of interest  required to be applied  under the  Retirement  Plan for
certain purposes pursuant to Section 411(c)(2) of the Internal Revenue Code.


3.4. Compensation Deferral Elections. A Participant's  before-tax  contributions
under this Section 3 shall be made pursuant to a compensation  deferral election
filed with his Employer  prior to the calendar  year such  contributions  are to
begin or, in the case of a Participant  who first becomes  eligible to make such
contributions  during but after the beginning of a calendar year, filed with his
Employer  not more  than 30 days  after so  becoming  eligible,  subject  to the
following:

     (a) The  Participant's  election  shall  apply to  employment  compensation
otherwise  payable after the later to occur of the date the Participant  becomes
eligible to make  before-tax  contributions  and the date the  election is filed
with his Employer.

     (b) Such election shall be automatically  revoked if the Participant ceases
to be a Covered Employee and such revocation shall be effective as to employment
compensation  the Participant is entitled to receive during the period he ceases
to be a Covered Employee.

     (c) Such election may be voluntarily  revoked by the Participant before the
beginning  of any  subsequent  calendar  year. A voluntary  revocation  shall be
effective as to employment  compensation  the Participant is entitled to receive
during that and subsequent  calendar years unless prior to the  commencement  of
any subsequent calendar year the Participant makes another compensation deferral
election.  Such  later  election  shall  apply  as  to  employment  compensation
otherwise payable during calendar years beginning after the election is made.

Any period during which a Participant does not make contributions under the Plan
(and, where applicable, does not elect to make after-tax contributions under the
Retirement  Plan or another USG Defined  Benefit Plan upon which  benefits would
accrue  under this Plan) shall be  disregarded  for  purposes of any  subsequent
calculation  of benefit  service (as defined in subsection 4.3 of the Retirement
Plan) or  compensation  (as  described in  subsection  3.3 above for purposes of
determining contributions under this Plan) used in determining the Participant's
Unlimited Benefits for a subsequent Plan year.


3.5.  Amount  of  Part A  Supplemental  Benefits.  Subject  to the  contribution
requirement  described in subsection  3.3, Part A  Supplemental  Benefits  shall
become payable under the Plan to a Participant upon the Participant's retirement
or earlier  termination of employment with the Company and its  subsidiaries.  A
Participant's  Part A  Supplemental  Benefits  shall  be in an  amount  that  is
actuarially  equivalent  to the  amount  by which  the  Participant's  Unlimited
Benefits exceed the Participant's Limited Benefits. For purposes of this Section
3,  actuarially  equivalent  benefits  shall be  calculated  on the basis of the
actuarial  factors,  assumptions  and tables  applied for that purpose under the
Retirement Plan, to the extent deemed appropriate by the Committee.


3.6. Payment of Part A Supplemental Benefits.  Subject to the provisions of this
subsection 3.6, Part A Supplemental  Benefits shall be paid in a lump sum within
30 days after such  benefits  become  payable  or, if the entire  amount of such
benefits  cannot be  determined  by the  Committee  within  that 30 day  period,
payment shall be made in one or more installments as determined by the Committee
but with the last payment due by the 30th day  following  the date the Committee
determines  the total amount of such  benefits.  The Committee in its discretion
may from time to time establish  rules  incorporating  objective  standards that
shall govern the form of payment of Part A Supplemental  Benefits that initially
become  payable  during  a  subsequent  calendar  year.  A copy of  such  rules,
certified by the Chairman or Secretary of the Committee, shall be filed with the
Secretary of the Company  before the  beginning  of the calendar  year for which
they first become effective. Any such rules in effect at the start of a calendar
year may not be modified or rescinded in that calendar  year or thereafter  with
respect to the form of payment of Part A  Supplemental  Benefits that  initially
become  payable  to any  person  under  the  Plan  during  that  calendar  year.
Notwithstanding the foregoing provisions of this subsection:

     (a) Payment of a Participant's Part A Supplemental Benefits must be made or
commence  not later than  February 1 of the  calendar  year next  following  the
calendar year in which he attains age 65 years or, if later,  his termination of
employment with the Company and its subsidiaries occurs.

     (b)  If  the  Committee   determines  that  a  Participant   whose  Part  A
Supplemental  Benefits  are  being  paid over a period of more than one year has
incurred  a severe  financial  hardship  as a  result  of the  occurrence  of an
unanticipated event beyond the Participant's  control,  the Committee may direct
that an  advance  payment  of part or all of the  Covered  Participant's  Part A
Supplemental  Benefits  be made,  but the  amount  thereof  shall not exceed the
amount needed for such financial hardship.

     (c) If a Change in Control as determined in accordance  with the provisions
of  Section 18 of the  Retirement  Plan as in effect on the New  Effective  Date
should occur,  Part A Supplemental  Benefits that initially  became payable to a
Participant  before the Change in Control but have not been paid or paid in full
shall be  distributed  in accordance  with the same form of payment as in effect
with respect to those benefits  immediately prior to the Change in Control,  but
any Part A Supplemental  Benefits that initially become payable after the Change
in Control shall be  distributed  in a lump sum to the person  entitled  thereto
within 30 days after they become payable.

     (d) If a  Participant's  death occurs while  employed by the Company or any
subsidiary of the Company or if a Participant's death occurs after he had become
entitled to Part A Supplemental Benefits but before payment of such benefits has
commenced or has been  completed,  Part A  Supplemental  Death Benefits shall be
payable with respect to the  Participant  only if and to the extent  provided in
subsection 3.7.

     (e) Spousal consent rules that apply under the Retirement Plan or any other
USG Defined  Benefit Plan with respect to forms of payment of benefits shall not
apply under this Plan.


3.7.  Amount  and  Payment  of  Part  A  Supplemental  Death  Benefits.  Part  A
Supplemental Death Benefits shall be payable under the Plan as follows:

     (a) If a  Participant's  death  occurs  while  employed by the Company or a
subsidiary  of the  Company  and if he had an  Eligible  Spouse  (as  defined in
subsection  5.1)  immediately  prior to his death,  the  Participant's  Eligible
Spouse shall be entitled to a lump sum Part A  Supplemental  Death Benefit under
this Plan  which is  actuarially  equivalent  (based on the age of the  Eligible
Spouse) to any additional monthly pre-retirement  survivor annuity benefits that
would  have  been  payable  to  the  Participant's  Eligible  Spouse  under  the
Retirement  Plan and all other USG Defined  Benefit  Plans if the  Participant's
Limited Benefits equalled his Unlimited Benefits.  The Part A Supplemental Death
Benefit  under  this  subparagraph  3.7(a)  shall  be paid to the  Participant's
Eligible  Spouse in a lump sum as soon as  practicable  after the  Participant's
death.  If the  Participant  did not have an Eligible  Spouse at the time of his
death,  no Part A  Supplemental  Death  Benefits shall be payable under the Plan
with  respect  to that  Participant  other  than  payment  to the  Participant's
Supplemental  Plan Beneficiary (as defined in subsection 5.2) of an amount equal
to the Participant's  before-tax  contributions  under the Plan with interest as
soon as practicable after the Participant's death.

     (b) If a Participant's death occurs after he had both retired (or otherwise
terminated  employment) and become entitled to Part A Supplemental  Benefits but
before payment of such benefits had been made or had commenced, and if he had an
Eligible  Spouse at the time of his death,  the  Participant's  Eligible  Spouse
shall be  entitled  to a lump sum Part A  Supplemental  Death  Benefit  which is
actuarially  equivalent  (based  on  the  age  of the  Eligible  Spouse)  to any
additional monthly pre-retirement survivor annuity benefits that could have been
payable to the  Participant's  Eligible Spouse under the Retirement Plan and all
other USG Defined Benefit Plans if the  Participant's  Limited Benefits equalled
his  Unlimited  Benefits.  The Part A  Supplemental  Death  Benefit  under  this
subparagraph 3.7(b) shall be paid to the Participant's Eligible Spouse in a lump
sum as soon as practicable after the Participant's Death. If the Participant did
not have an  Eligible  Spouse at the time of his death,  no Part A  Supplemental
Death Benefits shall be payable under the Plan with respect to that  Participant
other than payment to the  Participant's  Supplemental  Plan  Beneficiary  of an
amount equal to the Participant's  before-tax contributions under this Plan with
interest as soon as practicable after the Participant's death.

     (c) If a  Participant's  death occurs while  receiving  Part A Supplemental
Benefits,  his  Supplemental  Plan  Beneficiary  shall  be  entitled  to  Part A
Supplemental  Death Benefits equal to the death benefits,  if any, payable under
the form of payment of his Part A Supplemental Benefits.


                                    SECTION 4

                          Part B Supplemental Benefits


4.1.  Intent.  The  provisions  of  this  Section  4 are  intended  to  allow  a
Participant  to  elect  to  make  part  or  all  of  the  additional  before-tax
contributions  he could  have made under the  Investment  Plan and all other USG
Defined  Contribution Plans, and to earn the additional  matching  contributions
that would have been made by his Employer  and  credited to his  accounts  under
those  plans as a result of such  additional  before-tax  contributions,  if the
limitations described in subsection 1.3 did not exist and if amounts contributed
on a before-tax  basis under this Plan or deferred by the Participant  under the
Company's 1989 and subsequent management incentive compensation programs had not
been so  contributed  or deferred  but instead  paid to the  Participant  at the
proper time during employment and then included in the Participant's  employment
compensation  for  purposes  of  those  plans.   This  Section  4  also  permits
Participants to make additional  before-tax  contributions to the Plan in excess
of the amount permitted under the terms of the Investment Plan and to select one
or more deemed investments, the investment experience of which will be the basis
or index by which his accounts will be adjusted under this Plan.


4.2.  Part B  Supplemental  Benefits  and Part B  Supplemental  Death  Benefits.
Benefits that become payable under this Section 4 to a Participant  are referred
to as  "Part  B  Supplemental  Benefits"  or as  "Supplemental  Investment  Plan
Benefits."  Benefits that become payable under this Section 4 to any person as a
result of the death of a  Participant  are  referred to as "Part B  Supplemental
Death Benefits" or as "Supplemental Investment Plan Benefits."


4.3. Elective Participant Contributions. A Participant may elect to make part or
all of the additional  before-tax  contributions  described in subsection 4.1. A
Participant's  before-tax  contributions under this subsection 4.3 shall be made
by a compensation deferral election that is made in such form and in such manner
as the Committee shall determine; provided any such election shall be made prior
to the calendar year such  contributions are to begin, or if a Participant first
becomes eligible to make such contributions  after the beginning of any calendar
year,  not  more  than 30 days  after  so  becoming  eligible.  A  Participant's
compensation  deferral  election  under  this  subsection  4.3  shall  apply  to
employment  compensation  otherwise payable after the later to occur of the date
the Participant  becomes eligible to make before-tax  contributions and the date
the  compensation  deferral  election  is  made.  A  Participant's  compensation
deferral election may be revoked by the Participant  before the beginning of any
subsequent  calendar year.  The  revocation  shall be effective as to employment
compensation  the  Participant is entitled to receive during that and subsequent
calendar years unless prior to the commencement of any subsequent  calendar year
the  Participant  makes  another  compensation  deferral  election.  Such  later
election  shall apply as to employment  compensation  otherwise  payable  during
calendar years beginning after such later election is made.  Notwithstanding the
foregoing, a Participant's compensation deferral election automatically shall be
revoked for any period he ceases to be a highly compensated  employee as defined
in Section 414(q) of the Internal Revenue Code.


4.4. Additional Elective Participant Contributions.  A Participant who is making
the maximum permitted deferral under subsection 4.3 may elect to make additional
before-tax  contributions  pursuant  to this  subsection  4.4.  Such  additional
contributions  shall  be a  percentage  (in  whole  number  increments)  of  the
Participant's employment compensation which, when added to the percentage of the
Participant's  before-tax  contributions to this Plan pursuant to subsection 4.3
and to the Investment Plan and all other USG Defined  Contribution  Plans, shall
not exceed twenty percent. A Participant's  before-tax  contributions under this
subsection  4.4 shall be made by a compensation  deferral  election made in such
form and manner as the  Committee  shall  determine;  provided any such election
shall be made prior to the calendar year such  contributions are to begin, or if
a Participant first becomes eligible to make contributions under this subsection
4.4 after the beginning of any  subsequent  calendar year, not more than 30 days
after so becoming eligible. A Participant's compensation deferral election under
this  subsection 4.4 shall apply to employment  compensation  otherwise  payable
after the later to occur of the date the  Participant  becomes  eligible to make
before-tax  contributions  and the date the election is made. A Participant  may
revoke  or  reinstate  his  deferral  election  under  this  subsection  4.4  in
accordance with the rules on revocation and reinstatement of deferral  elections
found in subsection 4.3.

4.5.  Employer  Matching  Contributions.  A  Participant  who  makes  before-tax
contributions  under  subsection  4.3 shall be  entitled to  "Employer  Matching
Contributions"  under this Plan equal to the  additional  "corporation  matching
contributions"  he would have been entitled to receive under the Investment Plan
if such before-tax  contributions were permitted to be made under the Investment
Plan.  Employer  matching  contributions  will  not be  made  on any  before-tax
contributions  made pursuant to subsection  4.4. For purposes of this Section 4,
"corporation matching  contributions" means all forms of matching  contributions
provided for in Section 4 of the Investment Plan.

4.6. Separate Accounts,  Subaccounts,  Deemed  Investments.  The Committee shall
maintain  a  bookkeeping  account  in the  name of each  Participant  who  makes
before-tax  contributions  under  this  Section 4 and shall  maintain a separate
bookkeeping  account  in his name to  reflect  Employer  Matching  Contributions
attributable  to  such  before-tax  contributions.   In  accordance  with  rules
established by the Committee,  each  Participant's  account shall be adjusted to
reflect the investment  experience of one or more deemed investments selected by
the Participant  from among the investment funds offered in the Investment Plan.
The Committee may maintain such  subaccounts as it deems necessary to effect the
immediately  preceding sentence.  Any reference to a Participant's  "account" or
"accounts"   shall  include  all  subaccounts   established  on  behalf  of  the
Participant  by  the  Committee  in  accordance  with  this   subsection.   Each
Participant's  accounts  and  subaccounts  shall be adjusted at such time and in
such manner as accounts of  participants  in the Investment Plan are adjusted to
reflect the balances  that would have been in such  accounts if they had in fact
been maintained under the Investment Plan as described above. However, as of the
New Effective Date, each Participant's  accounts and subaccounts are not charged
the amounts that they would have been charged to represent  fees and expenses if
they had in fact been maintained under the Investment Plan. The Committee in its
discretion  may elect at some  future  date to charge  all or a portion  of such
amounts to the accounts and  subaccounts of Participants in accordance with such
rules as it may establish.


4.7.  Withdrawals.  No withdrawals may be made under this Plan with respect to a
Participant's accounts prior to the Participant's termination of employment with
the  Company  and  all of  its  subsidiaries  other  than  hardship  withdrawals
described  below.  A  Participant  may  request a hardship  withdrawal  from the
portion of his account that he would be entitled to receive under subsection 4.8
if he terminated employment with the Company and all subsidiaries on the date of
such withdrawal.  A Participant who is receiving  installment  distributions (if
such are permitted under subsection 4.9) also may request a hardship withdrawal.
Any hardship withdrawal shall be made in the same manner and subject to the same
conditions and  limitations as are set forth in the Investment Plan for hardship
withdrawals from participants'  before-tax  accounts.  However, if a Participant
incurs a hardship,  he must request a hardship withdrawal under this Plan to the
extent required to satisfy the immediate and heavy financial need caused by such
hardship before he may request a hardship  withdrawal  under the Investment Plan
or any other USG Defined  Contribution Plan. A withdrawal shall be made from the
Plan as soon as practicable after the request for the withdrawal is received and
approved by the Committee and shall be charged to the appropriate account of the
Participant  as of the date the  withdrawal  is actually  made pursuant to rules
established by the Committee.


4.8.  Vesting of Accounts.  Upon a Participant's  termination of employment with
the Company and all of its subsidiaries, the Participant (or in the event of his
death, his Supplemental Plan Beneficiary, as defined in subsection 5.2) shall be
entitled to the entire balance in the  Participant's  account which reflects his
before-tax  contributions  made under this  Section 4  (subject  to  adjustments
required of such account until complete distribution  thereof).  The Participant
or Supplemental Plan Beneficiary,  as the case may be, shall be entitled to that
portion  of  the  balance  in  the  Participant's  account  which  reflects  the
Participant's  share of  Employer  Matching  Contributions  the  Participant  or
Supplemental  Plan Beneficiary  would have been entitled to under the Investment
Plan if such contributions were "corporation matching  contributions" made under
the  Investment  Plan and such  account had been  maintained  as a  "corporation
account" under that Plan (subject to adjustments  required of such account until
complete distribution of the vested portion thereof).

4.9. Distribution of Accounts. Subject to the provisions of this subsection 4.9,
Part B  Supplemental  Benefits  shall be paid in a lump sum within 30 days after
such benefits become payable or, if the entire amount of such benefits cannot be
determined by the Committee within 30 days, payment shall be made in one or more
installments as determined by the Committee but with the last payment due by the
30th day following the date the  Committee  determines  the total amount of such
benefits.  The Committee in its discretion may from time to time establish rules
incorporating  objective standards that shall govern the form of payment of Part
B  Supplemental  Benefits  that  initially  become  payable  during a subsequent
calendar  year.  The  distribution  options  for  Part B  Supplemental  Benefits
established  by the  Committee  under this  subsection  4.9 may differ  from the
distribution  options  established by the Committee under subsection 3.6 for the
distribution  of Part A Supplemental  Benefits,  but shall be established in the
same manner and subject to the same  conditions and limitations as are set forth
in subsection 3.6, except that subparagraph  3.6(d) shall not apply in the event
of the death of a Participant.



                                    SECTION 5

                         Spouses, Beneficiaries, Funding


5.1.  Eligible  Spouse.  The spouse of a  Participant  will be  considered as an
"Eligible  Spouse" as of any date only if at least six months prior  thereto the
Participant  and his spouse were  lawfully  married  under the laws of the state
where the marriage was contracted and the marriage remains legally effective.


5.2.  Supplemental Plan Beneficiary.  A "Supplemental  Plan Beneficiary" means a
person who has been designated by a Participant as such by writing signed by the
Participant and filed with the Committee prior to the Participant's  death. If a
Participant failed to designate a Supplemental Plan Beneficiary or if the person
he designated predeceases the Participant,  the Participant's  Beneficiary under
the  Retirement  Plan shall be his  Supplemental  Plan  Beneficiary as to Part A
Supplemental  Death Benefits and his Beneficiary under the Investment Plan shall
be his Supplemental Plan Beneficiary as to Part B Supplemental Death Benefits.


5.3.  Funding.  Benefits  payable  under  this  Plan  to a  Participant  or  his
Supplemental Plan Beneficiary shall be paid directly by the Employers from their
general assets in such  proportions as the Company shall determine to the extent
such  benefits  are not paid  from a  Special  Retirement  Account  (established
pursuant to  Supplement A of this Plan) or from a so-called  "rabbi  trust",  an
irrevocable  grantor  trust the  assets of which are  subject  to the  claims of
creditors of the Employers in the event of their insolvency. The Employers shall
not be required to segregate  on their books or otherwise  any amount to be used
for the payment of benefits  under this Plan,  except as to any amounts  paid or
payable to a Special  Retirement Account under Supplement A of this Plan or to a
"rabbi trust".


                                    SECTION 6

                               General Provisions


6.1. Statement of Accounts.  The Committee shall furnish each Participant with a
statement of his Part B  Supplemental  Benefits  accounts  under this Plan as of
each  December 31, and may in its  discretion  furnish such  statements  at more
frequent intervals.


6.2. Employment Rights. Establishment of the Plan shall not be construed to give
any  Participant  the right to be  retained  in the employ of the Company or any
other Employer or to any benefits not specifically provided by this Plan.


6.3.  Interests Not Transferable.  Except as to withholding of any tax under the
laws of the  United  States  or any  state or  municipality,  the  interests  of
Participants and their  Supplemental Plan  Beneficiaries  under the Plan are not
subject  to the  claims  of  their  creditors  and  may  not be  voluntarily  or
involuntarily transferred, assigned, alienated or encumbered.

6.4.  Controlling  Law. The laws of Illinois shall be controlling in all matters
relating to the Plan.


6.5. Gender and Number.  Where the context admits, words in the masculine gender
shall  include the feminine  and neuter  genders,  the plural shall  include the
singular and the singular shall include the plural.


6.6.  Action by the Company.  Any action required of or permitted by the Company
under the Plan shall be by  resolution  of its Board of  Directors  or by a duly
authorized  committee  of its  Board of  Directors,  or by a person  or  persons
authorized by resolution of its Board of Directors or such committee.


6.7. Successor to the Company or Any Other Employer.  The term "Company" as used
in the Plan shall  include  any  successor  to the  Company by reason of merger,
consolidation,  the  purchase  or transfer  of all or  substantially  all of the
Company's  assets,  or otherwise.  The term  "Employer" as used in the Plan with
respect to the Company or any  subsidiary  shall  include any  successor to that
corporation by reason of merger, consolidation,  the purchase or transfer of all
or substantially all of the assets of that corporation, or otherwise.


6.8.  Facility of Payment.  Any amounts payable  hereunder to any person under a
legal disability or who, in the judgment of the Committee, is unable to properly
manage his affairs may be paid to the legal representative of such person or may
be applied for the benefit of such person in any manner which the  Committee may
select. Any payment made in accordance with the next preceding sentence shall be
a full and complete discharge of any liability for such payment under the Plan.



                                    SECTION 7

                            Amendment and Termination


While the Employers  expect to continue the Plan,  the Company must  necessarily
reserve  and  reserves  the  right to amend  the  Plan  from  time to time or to
terminate  the  Plan at any  time.  However,  no  amendment  of the Plan nor the
termination  of the Plan may cause the  reduction  or  cessation of any benefits
that,  but for such  amendment or  termination,  are payable  under this Plan or
would become  payable  under this Plan after the date such  amendment is made or
the  termination  of the Plan occurs with respect to benefits  accrued under the
Retirement  Plan and all other USG Defined Benefit Plans prior to such date, and
with  respect to  Participants'  before-tax  contributions  made under this Plan
prior to such date and  Employer  Matching  Contributions  attributable  to such
before-tax contributions.



                                  SUPPLEMENT A
                                       TO
                  USG CORPORATION SUPPLEMENTAL RETIREMENT PLAN


A-1. Purpose, Special Retirement Account. The purpose of this Supplement A is to
provide for  installment  payments of part or all of the accrued  benefits under
Part A of the Plan of each Eligible  Participant  to an individual  account (the
"Special  Retirement  Account") the  Participant  established in his name with a
bank or trust company designated by the Company pursuant to an agreement between
the Participant and the Company (the "Special Retirement Agreement").


A-2.  Eligible  Participant.  The term  "Eligible  Participant"  as used in this
Supplement A means a  Participant  in Part A of the Plan who had  established  a
Special  Retirement  Account on or before May 1, 1993. No  Participant  has been
eligible to establish a Special Retirement Account after May 1, 1993.


A-3.  Accrued  Benefit and Death Benefit Values,  After-Tax  Accrued Benefit and
Death Benefit  Values.  The following terms used in this Supplement A shall have
the following meanings:

     (a) "Accrued  Benefit  Value" as of any date means the present  value of an
Eligible  Participant's  Part A Supplemental  Benefits under the Plan as of that
date, as determined by the Committee  (calculated  on the bases of the actuarial
factors,  assumptions  and  tables  then  applied  for that  purpose  under  the
Retirement  Plan and benefit  limitations  imposed by the Internal  Revenue Code
then in effect,  and  assuming  that no payments  have been made to the Eligible
Participant's  Special Retirement Account pursuant to Paragraph A-5 and that the
Eligible  Participant  will  not  have  any  additional  service  or  employment
compensation).

     (b)  "After-Tax  Accrued  Benefit  Value" as of any date means an  Eligible
Participant's  Accrued  Benefit  Value as of that  date less  Applicable  Income
Taxes.

     (c)  "Accrued  Death  Benefit  Value"  means,  in the  case of an  Eligible
Participant  whose  death  occurs  prior  to  receipt  of  any  portion  of  the
Participant's Part A Supplemental  Benefits, the present value as of the date of
the Eligible Participant's death, as determined by the Committee,  of the Part A
Supplemental  Death  Benefits,  if any,  payable to the  Eligible  Participant's
Eligible  Spouse  as of that  date  (calculated  on the  basis of the  actuarial
factors,  assumptions  and tables  then  applied  under the  Retirement  Plan in
determining the present value of accrued death benefits and benefit  limitations
imposed by the  Internal  Revenue  Code then in  effect,  and  assuming  that no
payments  have  been  made  to the  Eligible  Participant's  Special  Retirement
Account).

     (d)  "After-Tax  Accrued  Death  Benefit  Value"  means,  in the case of an
Eligible Participant described in the next preceding sentence, the Accrued Death
Benefit Value as of the date of the Eligible Participant's death less Applicable
Income Taxes.


A-4.  Applicable Income Taxes.  "Applicable Income Taxes" means, with respect to
any amount, federal, state and local income taxes on such amount (using for this
purpose,  and subject to such rules as the Committee may establish,  the highest
published applicable  individual income tax rate in effect for the calendar year
as to which  such  taxes are being  determined),  provided  that state and local
income taxes shall be considered net of federal income tax benefits.


A-5. Payments to the Special  Retirement  Account.  Subject to the provisions of
Paragraph  A-6, the following  payments  will be made to the Special  Retirement
Account of each  Eligible  Participant.  As of the  beginning  of each  calendar
quarter,  the Committee shall determine the Employee's After-Tax Accrued Benefit
Value as well as the amount, if any, by which such value exceeds the fair market
value of all  assets  of the  Special  Retirement  Account  as of the end of the
preceding  calendar  quarter.  If  Employee's  After-Tax  Accrued  Benefit Value
exceeds the fair market value of such assets by $100,000 or more, a payment will
be made to the Special  Retirement  Account equal to the difference between such
values.  Payments  required to be made to the Special  Retirement  Account under
this Paragraph A-5 shall be made directly by the Company or from USG Corporation
Deferred Benefit Trust, or from both sources,  as soon as practicable  after the
amounts of the payments have been  determined by the Committee.  Pursuant to the
terms of the Special Retirement Agreement,  the Company will gross-up the amount
of a payment made to the Special  Retirement Account under this Paragraph A-5 so
as to provide  funds for the  Applicable  Income  Taxes  payable by the Eligible
Participant  on such payment and will make  payments to (or with respect to) the
Eligible  Participant in order to provide funds for the Applicable  Income Taxes
payable on investment income earned by the Special Retirement Account.


A-6.  Adjustment of Part A Supplemental  Benefits and Part A Supplemental  Death
Benefits Upon Retirement or Death.  For the purpose of determining the amount of
payments  to be made to an Eligible  Participant's  Special  Retirement  Account
pursuant  to  Paragraph  A-5,  it is  assumed  that  no  portion  of the  Part A
Supplemental Benefits he has accrued has been paid under the Plan. However, each
payment  made to an Eligible  Participant's  Special  Retirement  Account  shall
reduce the  obligation of the Plan to provide Part A  Supplemental  Benefits and
Part  A  Supplemental  Death  Benefits  to or  with  respect  to  that  Eligible
Participant and thus benefits  otherwise payable under the Plan shall be reduced
to reflect such  payments.  Upon an Eligible  Participant's  retirement or death
before retirement, the following shall apply:

     (a) No  further  payments  need  be made  under  the  Plan to the  Eligible
Participant's Special Retirement Account.

     (b) The  Committee  shall  determine  the  amount  of  Part A  Supplemental
Benefits or Part A  Supplemental  Death Benefits that would be payable under the
Plan as a result of such retirement or death if no payments had been made to the
Eligible  Participant's  Special Retirement Account and also shall determine the
After-Tax Accrued Benefit Value or After-Tax Accrued Death Benefit Value, as the
case may be, of those benefits.

     (c) The  benefits  determined  under  subparagraph  (b) next above shall be
reduced so that their  After- Tax Accrued  Benefit  Value or  After-Tax  Accrued
Death  Benefit Value equals the amount by which the  After-Tax  Accrued  Benefit
Value or After-Tax  Accrued Death Benefit Value,  determined in accordance  with
subparagraph (b) next above,  exceeds the fair market value of all assets of the
Eligible  Participant's  Special  Retirement  Account  as of  the  date  of  his
retirement or death,  disregarding  assets of the Special Retirement Account, if
any, that are required to be paid to the Company.  Subject to the  provisions of
subparagraph (d) next below,  the resulting  benefits shall be the actual Part A
Supplemental  Benefits or Part A  Supplemental  Death Benefits that will be paid
under the Plan to, or with respect to, the Eligible Participant.

     (d)  Subparagraph  3.7(b) of the Plan  provides  for the  payment of Part A
Supplemental  Death Benefits to the Eligible  Spouse of an Eligible  Participant
who dies after  retirement  but before  payment of any  portion of the  Eligible
Participant's Part A Supplemental Benefits had been made or commenced.  However,
if an Eligible  Participant  retires but dies before all assets in the  Eligible
Participant's   Special  Retirement  Account  not  in  excess  of  the  Eligible
Participant's  After-Tax Accrued Benefit Value have been distributed to him, the
Special  Retirement  Agreement  requires that the undistributed  portion of such
assets be distributed as soon as  practicable  after the Eligible  Participant's
death to the Eligible  Participant's  Beneficiary  under the Special  Retirement
Agreement.  In this case,  Part A  Supplemental  Death Benefits shall be payable
under  subparagraph  3.7(b) of the Plan to the  Eligible  Spouse of the Eligible
Participant  only to the extent,  if any,  the fair  market  value of the assets
distributed  from the Special  Retirement  Account to the  Eligible  Participant
after his  retirement and the assets  distributed or to be distributed  from the
Special  Retirement  Account  to such  Beneficiary  is less than the  After- Tax
Accrued Death Benefit Value of the Part A Supplemental  Death Benefits otherwise
payable to the Eligible Spouse under Part A of the Plan.

     (e) The actual Part A Supplemental  Benefits or Part A  Supplemental  Death
Benefits  determined under subparagraphs (c) and (d) next above shall be paid as
provided in subsection 3.6 or 3.7 of the Plan, whichever applies.

     (f) If the fair market  value of all assets in the  Eligible  Participant's
Special Retirement Account as of the date of his retirement or death exceeds the
After-Tax  Accrued  Benefit Value or the AfterTax  Accrued Death Benefit  Value,
whichever applies,  the Special  Retirement  Agreement provides that such excess
assets shall be returned to the Company.


A-7.  Terms and Provisions of the Plan. All the terms and provisions of the Plan
shall apply to this  Supplement  A and vice versa,  except that where and to the
extent the terms and provisions of the Plan and this Supplement A conflict,  the
terms and provisions of this Supplement A shall govern.



                                  EXHIBIT 10(l)

                                 Execution Copy


AMENDMENT  NO.  2  dated  as of May  14,  1997  (this  "Amendment"),  among  USG
Corporation, a Delaware corporation (the "Borrower"), the financial institutions
parties hereto (the  "Lenders") and The Chase Manhattan Bank, a New York banking
corporation,  formerly known as Chemical Bank, in its separate capacity as agent
for the Lenders (the "Agent").

PRELIMINARY STATEMENTS. (1) The Borrower, the Lenders, the Issuing Banks and the
Agent have  entered  into the Credit  Agreement  dated as of July 27,  1995,  as
amended by  Amendment  No. 1 thereto  dated as of February 1, 1996 (the  "Credit
Agreement")  and have agreed to amend the Credit  Agreement as  hereinafter  set
forth.

(2)  Capitalized  terms used herein and not otherwise  defined herein shall have
the meanings ascribed to such terms in the Credit Agreement.

In  consideration  of the premises and the agreements,  provisions and covenants
herein  contained,  the parties hereto hereby agree, on the terms and subject to
the conditions set forth herein, as follows:

SECTION 1.  Amendment of the Credit  Agreement.  The Credit  Agreement is hereby
amended as follows:

1.  Section  1.01 of the  Credit  Agreement  is hereby  amended  to  delete  the
definition of "Applicable  Commitment  Fee" contained  therein and to substitute
the following therefor:

"Applicable  Commitment Fee" shall mean, for any date, the applicable  number of
basis  points  (expressed  as  a  percentage)  set  forth  below  based  on  the
Debt/EBITDA  Ratio as of the  last day of the  Borrower's  most  recently  ended
period of four consecutive fiscal quarters:
<TABLE>
         Debt/EBITDA Ratio                                                        Applicable Commitment Fee
         -----------------                                                        -------------------------
                                                                                     (in basis points)
<CAPTION>
         <S>                                                                                <C>
         greater than 3.00 to 1.0                                                           31.25

         greater than 2.50 to 1.0 but less
           than or equal to 3.00 to 1.0                                                     25.00

         greater than 2.00 to 1.0 but less
           than or equal to 2.50 to 1.0                                                     22.50

         greater than 1.50 to 1.0 but less
           than or equal to 2.00 to 1.0                                                     20.00

         greater than 1.25 to 1.0 but less
           than or equal to 1.50 to 1.0                                                     18.75

         greater than 1.00 to 1.0 but less
           than or equal to 1.25 to 1.0                                                     15.00

         less than or equal to 1.0 to 1.0                                                   12.50
</TABLE>
For purposes of the foregoing,  the Applicable  Commitment Fee at any time shall
be  determined by reference to the  Debt/EBITDA  Ratio as of the last day of the
Borrower's  most recently ended fiscal quarter,  provided,  that, in calculating
the Debt/EBITDA  Ratio for purposes of this  definition,  Debt shall not include
obligations  with  respect  to letters  of credit  (including  Letters of Credit
issued hereunder)  entered into in the ordinary course of business and having an
aggregate  outstanding  face  amount of up to  $50,000,000  to the  extent  such
letters  of  credit  are not drawn on or, if and to the  extent  drawn on,  such
drawing is promptly reimbursed following receipt by the applicable account party
of a demand  for  reimbursement  following  payment  on the  letter  of  credit.
Following  the end of any such  fiscal  quarter,  any  change in the  Applicable
Commitment Fee shall become  effective for all purposes on and after the earlier
of (i) the date of delivery to the Agent of the  Debt/EBITDA  Ratio  Certificate
for such  fiscal  quarter  and (ii) the  date of  delivery  to the  Agent of the
Financial Officer's certificate and applicable financial statements described in
Sections 5.07(a),  (b) and (c) relating to such fiscal quarter.  Notwithstanding
the  foregoing,  at any time during which the Borrower has failed to deliver the
Financial Officer's certificate and applicable financial statements described in
Sections  5.07(a),  (b) and (c) with respect to a fiscal  quarter in  accordance
with the provisions  thereof for more than five days after such  certificate and
the  applicable  financial  statements  are due,  and  until  such  time as such
financial  statements are so delivered,  the Applicable  Commitment Fee shall be
31.25 basis points.

2.  Section  1.01 of the  Credit  Agreement  is hereby  amended  to  delete  the
definition of "Applicable Eurodollar Margin" contained therein and to substitute
the following therefore:

"Applicable  Eurodollar  Margin" shall mean,  for any date,  with respect to the
Revolving Loans comprising any Eurodollar  Borrowing,  the applicable margin set
forth below based on the Debt/EBITDA  Ratio as of the last day of the Borrower's
most recently ended period of four consecutive fiscal quarters:

<TABLE>

         Debt/EBITDA Ratio                                                        Applicable Commitment Fee
         -----------------                                                        -------------------------
                                                                                     (in basis points)
<CAPTION>
         <S>                                                                                <C>
         greater than 3.00 to 1.0                                                           112.5

         greater than 2.50 to 1.0 but less
           than or equal to 3.00 to 1.0                                                     75.00

         greater than 2.00 to 1.0 but less
           than or equal to 2.50 to 1.0                                                     62.50

         greater than 1.50 to 1.0 but less
           than or equal to 2.00 to 1.0                                                     55.00

         greater than 1.25 to 1.0 but less
           than or equal to 1.50 to 1.0                                                     45.00

         greater than 1.00 to 1.0 but less
           than or equal to 1.25 to 1.0                                                     40.00

         less than or equal to 1.0 to 1.0                                                   37.50
</TABLE>

For purposes of the  foregoing,  the  Applicable  Eurodollar  Margin at any time
shall be determined by reference to the Debt/EBITDA  Ratio as of the last day of
the  Borrower's  most  recently  ended  fiscal  quarter,   provided,   that,  in
calculating the Debt/EBITDA  Ratio for purposes of this  definition,  Debt shall
not include  obligations with respect to letters of credit (including Letters of
Credit  issued  hereunder)  entered into in the ordinary  course of business and
having an aggregate  outstanding  face amount of up to $50,000,000 to the extent
such  letters of credit are not drawn on or, if and to the extent drawn on, such
drawing is promptly reimbursed following receipt by the applicable account party
of a demand  for  reimbursement  following  payment  on the  letter  of  credit.
Following  the end of any such  fiscal  quarter,  any  change in the  Applicable
Eurodollar  Margin  shall  become  effective  for all  purposes on and after the
earlier  of (i) the  date of  delivery  to the  Agent of the  Debt/EBITDA  Ratio
Certificate  and  (ii)  the  date of  delivery  to the  Agent  of the  Financial
Officer's  certificate and applicable financial statements described in Sections
5.07(a),  (b) and (c)  relating  to such  fiscal  quarter.  Notwithstanding  the
foregoing,  at any time  during  which the  Borrower  has failed to deliver  the
Financial Officer's certificate and applicable financial statements described in
Sections  5.07(a),  (b) and (c) with respect to a fiscal  quarter in  accordance
with the provisions  thereof for more than five days after such  certificate and
the  applicable  financial  statements  are due,  and  until  such  time as such
financial statements are so delivered, the Applicable Eurodollar Margin shall be
112.50 basis points.

1.3  Section  5.09 of the Credit  Agreement  (which  requires  the pledge to the
Collateral Trustee of newly created or acquired domestic Material  Subsidiaries)
is hereby deleted in its entirety.

1.4 Section 6.09 of the Credit Agreement is hereby amended to delete the maximum
Debt/EBITDA  Ratio of 4.50 to 1.00 set forth in  subsection  (a)  thereof and to
substitute a maximum Debt/EBITDA Ratio of 4.00 to 1.00 therefor.

SECTION 2. Release of Collateral.  Pursuant to Section 9.07(c)(ii) of the Credit
Agreement, all of the Lenders hereby direct the Collateral Trustee, and instruct
the Borrower to direct the Collateral Trustee, to release its Lien on all of the
"Collateral"  (as defined in the Collateral  Trust Agreement) in accordance with
the procedures described in Section 7 of the Collateral Trust Agreement.

SECTION 3. Representations and Warranties.  The Borrower represents and warrants
to each of the Lenders and the Agent that:

         (a) This Amendment has been duly authorized,  executed and delivered by
it and  constitutes  its legal,  valid and binding  obligation,  enforceable  in
accordance  with its  terms  except as such  enforceability  may be  limited  by
bankruptcy, insolvency, reorganization, fraudulent transfer, moratorium or other
similar laws affecting  creditors' rights generally and by general principles of
equity (regardless of whether such  enforceability is considered in a proceeding
at law or in equity).

         (b)  Before   and  after   giving   effect   to  this   Amendment,  the
representations  and warranties  set forth in Article V of the Credit  Agreement
are true and correct in all material respects with the same effect as if made on
the date  hereof,  except to the  extent  such  representations  and  warranties
expressly relate to an earlier date.

         (c) Before or after giving effect to this Amendment, no Event of
 Default or Potential Event of Default has occurred and is continuing.

SECTION 4. Condition to  Effectiveness.  The amendments to the Credit  Agreement
set forth in this  Amendment  shall become  effective as of the date first above
written when the Agent shall have received  counterparts of this Amendment that,
when taken  together,  bear the  signatures of the Borrower,  the Agent and each
Lender.

SECTION 5. Credit Agreement.  Except as specifically  amended hereby, the Credit
Agreement  and each Loan  Document  shall  continue  in full force and effect in
accordance  with the respective  provisions  thereof as in existence on the date
hereof.  After the date hereof, any reference to the Credit Agreement shall mean
the Credit Agreement as amended hereby.


SECTION 6. Applicable Law. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

SECTION  7.  Counterparts.  This  Amendment  may be  executed  in  two  or  more
counterparts,  each of which shall  constitute an original but all of which when
taken together shall constitute but one contract.

SECTION  8.  Expenses.  The  Borrower  agrees  to  reimburse  the  Agent for its
out-of-pocket  expenses  in  connection  with  this  Amendment,   including  the
reasonable fees,  charges and disbursements of Sidley & Austin,  counsel for the
Agent.


IN WITNESS  WHEREOF,  the parties  hereto have caused this  Amendment to be duly
executed by their  respective  authorized  officers as of the day and year first
written above.

                         USG CORPORATION


                         By_____________________________
                         Name:__________________________
                         Title:_________________________



                         THE CHASE MANHATTAN BANK,
                         individually and as Agent

                         By______________________________
                         Name:___________________________
                         Title:__________________________



                          BANKERS TRUST COMPANY


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          CITIBANK, N.A.


                          By______________________________
                          Name:___________________________
                          Title:__________________________




                          THE BANK OF TOKYO-MITSUBISHI, LTD.,
                          CHICAGO BRANCH


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          BANK OF MONTREAL
  

                          By______________________________
                          Name:___________________________
                          Title:__________________________




                          BANQUE PARIBAS, CHICAGO BRANCH

                          By______________________________
                          Name:___________________________
                          Title:__________________________


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          THE FIRST NATIONAL BANK OF CHICAGO


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          THE FUJI BANK, LIMITED


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          THE INDUSTRIAL BANK OF JAPAN,
                          LIMITED, CHICAGO BRANCH


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          LASALLE NATIONAL BANK


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          MORGAN GUARANTY TRUST COMPANY OF NEW
                          YORK


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          THE NORTHERN TRUST COMPANY


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          THE SANWA BANK, LIMITED, CHICAGO BRANCH


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          TORONTO DOMINION (TEXAS), INC.
 

                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          ARAB BANKING CORPORATION


                          By_____________________________
                          Name:__________________________
                          Title:_________________________




                          MITSUBISHI TRUST & BANKING CORPORATION,
                          CHICAGO BRANCH


                          By______________________________
                          Name:___________________________
                          Title:__________________________




                          WACHOVIA BANK OF GEORGIA, N.A.


                          By______________________________
                          Name:___________________________
                          Title:__________________________




                          TRUST COMPANY BANK


                          By______________________________
                          Name:___________________________
                          Title:__________________________




                          CAISSE NATIONALE DE CREDIT AGRICOLE


                          By______________________________
                          Name:___________________________
                          Title:__________________________



                          THE MITSUI TRUST & BANKING CO. LTD.,
                          NEW YORK BRANCH


                          By______________________________
                          Name:___________________________
                          Title:__________________________




                          THE SUMITOMO BANK, LTD., CHICAGO BRANCH


                          By______________________________
                          Name:___________________________
                          Title:__________________________




                                  EXHIBIT 10(n)




                                      1997
                                     Annual
                          Management Incentive Program


                                 USG Corporation




                                     PURPOSE


To enhance USG Corporation's ability to attract, motivate, reward and retain key
employees of the  Corporation and its operating  subsidiaries  and to strengthen
the existing  mutual interest  between such key employees and the  Corporation's
stockholders by providing  incentive award  opportunities  to such key employees
who  discharge  their  accountabilities  in a manner  which  makes a  measurable
contribution to the Corporation's earnings.



                                  INTRODUCTION


This  Annual  Management  Incentive  Program is in effect  from  January 1, 1997
through December 31, 1997.



                                   ELIGIBILITY


Individuals  eligible for  participation  in this Program are those officers and
other key  employees  occupying  management  positions in Broadband 16 or higher
(775 or more points).  Employees who  participate in any other annual  incentive
program  of the  Corporation  or any of its  subsidiaries  are not  eligible  to
participate in this Program.



                                      GOALS

For the 1997 Annual Management  Incentive Program,  Adjusted Net Earnings,  Goal
Income  and  Strategic  Targets  for USG  Corporation,  Subsidiaries  and Profit
Centers  will  be  determined  by the  Grants  and  Awards  Subcommittee  of the
Compensation  and  Organization  Committee  of the USG Board of  Directors  (the
"Subcommittee") after considering recommendations submitted from USG Corporation
and Operating Subsidiaries.  Except in the case of a Named Executive Officer (as
defined in the  Administrative  Guidelines  below),  Profit  Center goals may be
adjusted by the  Chairman of USG  Corporation  if business  conditions  or other
significant  unforeseen  circumstances  beyond the control of the Profit  Center
have a major impact on opportunity.


                                  AWARD VALUES

For the Annual  Management  Incentive  Program,  position target  incentive
values are based on level of  accountability  and are  expressed as a percent of
approved  annualized  salary.  (EXCEPTION:  For the transition year of 1997, the
target  incentive  value will be expressed  as a percent of approved  annualized
salary or annualized  reference  point,  whichever is higher.)  Resulting  award
opportunities  represent  a fully  competitive  incentive  opportunity  for 100%
(target)  achievement of Corporate,  Operating  Subsidiary  and/or Profit Center
goals:
<PAGE>
<TABLE>
- -------------------------------------------------------------------------------------------------------------------

                                                                                Position Target Incentive Value
                                                                                -------------------------------
<CAPTION>
<S>                                                                                          <C>
Chairman, President & CEO - USG Corporation                                                  65%
- -------------------------------------------------------------------------------------------------------------------

Executive Vice President-Operations, USG Corporation;                                        60%
  President & CEO, U.S. Gypsum Company;
  President & CEO, USG Interiors, Inc.
- -------------------------------------------------------------------------------------------------------------------

Executive Vice President International Development                                           55%
  and Distribution, USG Corporation
- -------------------------------------------------------------------------------------------------------------------

USG CORPORATION
      Senior Vice President & General Counsel                                                50%
      Senior Vice President & Chief Administrative Officer
      Senior Vice President & Chief Financial Officer
- -------------------------------------------------------------------------------------------------------------------

USG CORPORATION & OPERATING SUBSIDIARIES
      OFFICERS AND MANAGERS
      President & CEO, L&W Supply Corporation                                                40%

      Executive Vice President, USG Interiors, Inc; President & CEO, CGC, Inc.

      Executive Vice President - Operations, U.S. Gypsum Company

      Executive Vice President Marketing, U.S. Gypsum Company

      Executive Vice President, USG International, Ltd.

      Vice President & Controller, USG Corporation;
      Vice President Financial Services,
      North American Gypsum and Worldwide Ceilings

      Vice President Research & Technology, USG Corporation

      Vice President & Treasurer, USG Corporation

      Vice President Human Resources - Operations, USG Corporation
- -------------------------------------------------------------------------------------------------------------------

GENERAL MANAGERS (PROFIT CENTER HEADS)
      Sales of $50 Million and over                                                          30%
      Sales Under $50 Million                                                                25%
- -------------------------------------------------------------------------------------------------------------------

USG CORPORATION, OPERATING SUBSIDIARIES & PROFIT CENTERS
      OFFICERS AND MANAGERS
      Position Reference Point: $174,000 and over                                            35%
      Position Reference Point: $154,005 - $173,999                                          30%
      Position Reference Point: $125,085 - $154,004                                          25%
      Position Reference Point: $111,600 - $125,084                                          20%
      Position Reference Point: $  89,400 - $111,599                                         15%
      Position Reference Point: Below $89,400                                                10%
- -------------------------------------------------------------------------------------------------------------------
</TABLE>


                                     AWARDS

Incentive  awards for all participants in the 1997 Annual  Management  Incentive
Program will be reviewed and approved by the Subcommittee.

The total of all  incentive  awards paid under this program will not exceed 4.0%
of USG  Corporation's  1997  consolidated  goal income. In the event that awards
otherwise  payable pursuant to the Annual  Management  Incentive  Program exceed
such amount,  all awards will be reduced prorata to an aggregate amount equal to
4.0%.

For all  participants,  the annual incentive award opportunity is the annualized
salary in effect at the  beginning of the calendar year (March 1 of the calendar
year  for the  twenty  most  senior  executives)  multiplied  by the  applicable
position target incentive value percent.
<TABLE>
Incentive awards for 1997 will be based on:
<CAPTION>
         <S>      <C>                                                                   <C>   
         o        ADJUSTED NET EARNINGS:                                                20% - 60% OF INCENTIVE
                  (net earnings plus amortization of excess reorganization value plus reorganization debt discount, net of taxes)
                  based on the Corporation's year-end financial statements.

         o        GOAL INCOME:                                                          20% - 60% OF INCENTIVE
                  (net sales less cost of sales and selling and administrative expenses) based on the Corporation's year-end
                  financial statements.

         o        STRATEGIC FOCUS TARGET:                                               20% OF INCENTIVE

         o        PERSONAL PERFORMANCE:                                                 20% OF INCENTIVE
                  [except in the case of the twenty (20) most senior executives whose awards are based solely on degree of
                  achievement of Adjusted Net Earnings and/or Goal Income (60%) and Strategic Focus Target (40%) results].

         o        Except in the case of a Named Executive Officer, other appropriate performance measures as approved by the
                  Subcommittee.
</TABLE>
1.       For  participants  to qualify for the ADJUSTED NET EARNINGS and/or GOAL
         INCOME  segment   comprising  60%  of  their  award,  their  respective
         organization (e.g. Corporation/Group/  Subsidiary, etc. as described on
         page 6) must achieve 75% or higher of its adjusted net earnings or goal
         income target.

2.       ADJUSTED  NET EARNINGS and GOAL INCOME  segment  award  amounts will be
         determined according to the following schedule:





<TABLE>

Adjusted Net Earnings/                           Adjustment Factor for Corporate, Group,
Goal Income Achievement                          Subsidiary or Profit Center Performance
<CAPTION>
- ----------------------------------------------------------------------------------------------------------

<S>       <C>                                                 <C>
Below      75%                                                  0%
           75%                                                 50%
           80%                                                 60%
           90%                                                 80%
          100%                                                100%
          110%                                                120%
          120%                                                140%
          140%                                                180%
          150%                                                200%
</TABLE>

3.       For  participants  to qualify for the  STRATEGIC  FOCUS TARGET  segment
         comprising  20% (40% for the twenty  most senior  executives)  of their
         incentive award,  their respective  organization must achieve a minimum
         level of  performance  related to the specified  strategic  focus.  The
         Strategic Focus Targets will be measurable, verifiable and derived from
         the formal  strategic  planning  process (e.g.,  cost reduction,  sales
         growth, market share gain, margins,  etc.). The award adjustment factor
         for  this  segment  will  range  from  0.5  (after  achieving   minimum
         performance  levels) to 2.0 for maximum  attainment.  Participants will
         receive  schedules of  Strategic  Focus  Targets  upon  approval by the
         Subcommittee.

4.       Except  with  respect  to  the  twenty  (20)  most  senior   executives
         (including the Named Executive  Officers) whose awards are based solely
         on  achievement  of Adjusted Net  Earnings,  Goal Income and  Strategic
         Focus Targets, participants will have a third segment comprising 20% of
         their incentive award based upon their individual Personal  Performance
         Rating according to the following schedule:
<TABLE>
<CAPTION>
         <S>                                                 <C>
         Personal
         Performance Rating                                 Personal Performance
         Adjustment Range
         Far Exceeded Expectations                           1.70 - 2.00
         Exceeded Expectations                               1.20 - 1.50
         Achieved Expectations                               0.80 - 1.10
</TABLE>
         The maximum  incentive  award including all segments of this Program is
         200% of the target incentive opportunity.

         The  Subcommittee  may eliminate awards to any participant who fails to
         receive a Personal  Performance  Rating of "Achieved  Expectations"  or
         better under the  Corporation's  Performance  Planning and Review (PPR)
         system.

5.       Target  incentive award  opportunities  and  calculations of awards for
         participants  will be based on the  achievement of specific  Corporate,
         Group,  Subsidiary  and/or  Profit Center  adjusted net earnings,  goal
         income and strategic  focus targets as displayed on the following  page
         or as otherwise may be established subject to approval of the Chairman:
<PAGE>
<TABLE>

                                            Basis for
                                            Financial Measures                               Basis for
                                            Incentive Award                                  Strategic Focus
Participants                                (60% of Target Incentive)                        Incentive Award
- -------------------------------------------------------------------------------------------------------------------
<CAPTION>
<S>                                         <C>                                              <C>
USG Corporation

    USG Corporation Senior Executive        60% Adjusted Net Earnings, USG Corporation       40%
    Management

    USG Corporation Staff                   60% Adjusted Net Earnings, USG Corporation       20%

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


North American Gypsum

    Executive VP - Operations,              20% Adjusted Net Earnings, USG Corporation       40% NAG
    U.S. Gypsum Company
    Executive VP - Marketing,               40% Goal Income, North American Gypsum
    U.S. Gypsum Company

    General Mgr - IGD                       20% Goal Income, Subsidiary                      20% Profit Center
    General Mgr - Materials Division        40% Goal Income, Profit Center/Division
    Profit Center Staff

    Executive VP, CGC, Inc                  20% Adjusted Net Earnings, USG Corporation       40% NAG
                                            20% Goal Income,  North American Gypsum
                                            20% Goal Income, CGC, Inc

    President & General Mgr, YPSA           20% Goal Income, North American Gypsum           20% YPSA
                                            40% Goal Income, YPSA

    U.S. Gypsum Staff                       25% Goal Income, North American Gypsum           20% NAG
                                            35% Goal Income, U.S. Gypsum Company

    CGC, Inc Staff                          20% Goal Income, North American Gypsum           20% CGC
                                            40% Goal Income, CGC, Inc

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


Worldwide Ceilings

    Executive VP, USG Interiors, Inc        20% Adjusted Net Earnings, USG Corporation       40% WWC
    Executive VP, USG International, Ltd    40% Goal Income, Worldwide Ceilings

    USG Interiors, Inc Staff                25% Goal Income, Worldwide Ceilings              20% WWC
                                            35% Goal Income, USG Interiors, Inc

    USG International, Ltd Staff            25% Goal Income, Worldwide Ceilings              20% WWC
                                            35% Goal Income, USG International, Ltd

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


L&W Supply Corporation

    President & CEO                         20% Adjusted Net Earnings, USG Corporation       40% L&W
                                            20% Goal Income, North American Gypsum
                                            20% Goal Income, L&W Supply

    L&W Supply Corporation Staff            20% Goal Income, North American Gypsum           20% L&W
                                            40% Goal Income, L&W Supply

- -------------------------------------------------------------------------------------------------------------------
</TABLE>



6.       SPECIAL AWARDS

         In addition to the incentive  opportunity  provided by this Program,  a
         special   award   may   be   recommended   for   any   participant   or
         non-participant,  other than a Named Executive Officer, who has made an
         extraordinary contribution to the Corporation's welfare or earnings.





GENERAL PROVISIONS
- --------------------------------------------------------------------------------

1.       The  Subcommittee  shall review and approve the awards  recommended for
         officers and other employees who are eligible  participants in the 1997
         Annual Management  Incentive Program.  The Subcommittee shall submit to
         the Board of Directors, for their ratification,  a report of the awards
         for all eligible participants  including corporate officers approved by
         the Subcommittee in accordance with the provisions of the Program.

2.       The  Subcommittee   shall  have  full  power  to  make  the  rules  and
         regulations  with respect to the  determination of achievement of goals
         and the  distribution  of  awards.  No  awards  will be made  until the
         Subcommittee  has certified goal  achievement and applicable  awards in
         writing.

3.       The judgement of the  Subcommittee  in  construing  this Program or any
         provisions thereof, or in making any decision hereunder, shall be final
         and  conclusive and binding upon all employees of the  Corporation  and
         its subsidiaries  whether or not selected as  beneficiaries  hereunder,
         and their heirs, executors, personal representatives and assigns.

4.       Nothing herein  contained shall limit or affect in any manner or degree
         the normal and usual  powers of  management,  exercised by the officers
         and the Board of Directors or committees  thereof, to change the duties
         or the character of employment of any employee of the Corporation or to
         remove the  individual  from the  employment of the  Corporation at any
         time, all of which rights and powers are expressly reserved.

5.       No award  will be paid to a  Program  participant  who is not a regular
         full-time  employee in good standing at the end of the calendar year to
         which the award  applies;  except an award  which  would  otherwise  be
         payable based on goal  achievement  may be  recommended in the event of
         retirement,  disability  or death or in the  event the  participant  is
         discharged  without cause from the employment of the company during the
         year.

6.       The  awards  made  to  employees   shall  become  a  liability  of  the
         Corporation or the  appropriate  subsidiary as of December 31, 1997 and
         all payments to be made  hereunder  will be made as soon as practicable
         after said awards have been approved.


ADMINISTRATIVE GUIDELINES
- --------------------------------------------------------------------------------


1.       Award  values  will be based on  annualized  salary in effect  for each
         qualifying  participant  at the  beginning of the year (March 1 for the
         twenty most senior  executives).  Any change in duties,  dimensions  or
         responsibilities  of a current  position  resulting in a new evaluation
         and an increase or  decrease  in  reference  points will be applied for
         Incentive  Program  purposes  on a prorata  basis  with the  respective
         reference  point and  target  incentive  value to apply for the  actual
         number of full months of service at each  evaluation  except for such a
         change with  respect to a Named  Executive  Officer,  in which case any
         change in reference  points and target incentive value, for any reason,
         shall not become effective until January 1 of the following year.

2.       As provided by the Program,  no award is to be paid any participant who
         is not a regular full-time  employee in good standing at the end of the
         calendar  year to which the  award  applies.  However,  in the event an
         eligible participant with three (3) or more months of active service in
         the Program year subsequently retires,  becomes disabled or dies, or is
         discharged  from the  employment  of the  Company  without  cause,  the
         participant (or beneficiary) may receive an award which would otherwise
         be payable based on goal achievement, prorated for the actual months of
         active service during the year.

3.       Employees  participating in any other incentive or bonus program of the
         parent  Corporation or a Subsidiary who are transferred during the year
         to a position covered by the Annual Management Incentive Program (other
         than a Named Executive Officer) will be eligible to receive a potential
         award  prorated for actual full months of service in the two  positions
         with the respective  incentive  program and target  incentive values to
         apply. For example, a Marketing Manager promoted to Director, Marketing
         on August  1, will be  eligible  to  receive a prorata  award for seven
         months based on the Marketing  Manager Plan provisions and values,  and
         for  five  months  under  the  Annual   Management   Incentive  Program
         provisions and target incentive values.

4.       In the event of transfer of an employee  (other than a Named  Executive
         Officer) from an assignment which does not qualify for participation in
         any  incentive  or bonus plan to a position  covered by the 1997 Annual
         Management  Incentive Program,  the employee is eligible to participate
         in the Annual  Incentive  Program with any potential award prorated for
         the actual  months of service in the  position  covered by the  Program
         during the year.  A minimum of three  months of service in the eligible
         position is required.

5.       Participation  during the current Program year for individuals employed
         from outside the  Corporation is possible with any award to be prorated
         for actual full months of service in the eligible  position.  A minimum
         of three full months of service is required for award consideration.

6.       Exceptions to established administrative guidelines can only be made by
         the Subcommittee and only with respect to participants other than Named
         Executive Officers.

7.       For purposes of this Program,  a "NAMED EXECUTIVE OFFICER" will include
         any  executive  officer who is deemed a "named  executive  officer" for
         1997  under  Item 402  (a)(3) of  Regulation  S-K under the  Securities
         Exchange  Act  of  1934  and  was  employed  by  the  Corporation  or a
         Subsidiary on the last day of the year.



                                  EXHIBIT 10(p)


                                 FIRST AMENDMENT
                                       TO
                        OMNIBUS MANAGEMENT INCENTIVE PLAN
                               OF USG CORPORATION


         FIRST AMENDMENT dated as of November 11, 1997 (this "First Amendment"),
to the Omnibus Management Incentive Plan of USG Corporation (the "Plan"),  which
Plan was adopted and approved by the  Compensation  and  Organization  Committee
(the   "Committee")  of  the  Board  of  Directors  of  USG   Corporation   (the
"Corporation")  on February 11, 1997,  and approved by the  stockholders  of the
Corporation on May 14, 1997.


WHEREAS,  the  Committee  has  approved  an  amendment  to the  Plan to  require
stockholder approve of certain modifications of awards under the Plan;


NOW, THEREFORE,  in consideration of the premises, the Plan is hereby amended as
set forth below:

         Section  5(a)(iv) of the Plan is hereby  amended by the addition of the
following sentence at the end thereof:

                  "Notwithstanding anything in this Plan to the contrary, awards
                  of Restricted Stock that are not performance-based  shall have
                  restriction periods of not less than three (3) years."

         The second  paragraph of Section 9(b) of the Plan is hereby  amended by
the addition of the following sentence at the end thereof:

                  "In addition, unless the shareholders of the Corporation shall
                  have first approved  thereof,  no amendment of the Plan or any
                  award  agreement  thereunder  shall be  effective  which would
                  permit the  re-pricing  of  outstanding  stock  options or the
                  waiver  of  restrictions  on  outstanding   restricted   stock
                  awards."

         3.       Except  as  expressly  amended  and  modified  by  this  First
                  Amendment,  the Plan is hereby  ratified and  confirmed in all
                  respects.


         IN WITNESS WHEREOF,  the Corporation has caused this First Amendment to
be executed by its  officers  thereunto  duly  authorized  as of the 11th day of
November 1997.



                        USG CORPORATION



                         By /s/ Harold E. Pendexter, Jr.
                         -------------------------------
                         Harold E. Pendexter, Jr.
                         Senior Vice President and
                         Chief Administrative Officer
Attest:

/s/ Dean H. Goossen
- -------------------
Dean H. Goossen
Corporate Secretary





                                  EXHIBIT 10(q)



                                 USG CORPORATION
                           STOCK COMPENSATION PROGRAM
                           FOR NON-EMPLOYEE DIRECTORS
                            (as amended and restated)



Article 1.        Establishment, Purpose, and Duration

         1.1 Establishment of the Plan. USG Corporation,  a Delaware corporation
(the "Corporation"), hereby amends and restates in its entirety the non-employee
director  incentive stock  compensation plan known as the "USG Corporation Stock
Compensation  Program for  Non-Employee  Directors"  (herein,  as so amended and
restated,  called the "Plan"), as set forth in this document.  The Plan provides
for the annual grant of shares of the common stock of the Corporation ("Shares")
to  non-employee  directors and for the  acquisition of Deferred Stock Units (as
herein defined) by non-employee  directors,  subject to the terms and provisions
set forth herein.

         Upon  approval by the Board of Directors of the  Corporation,  the Plan
shall become  effective  as of July 1, 1997 (the  "Effective  Date"),  and shall
remain in effect as provided in Section 1.3 herein.

         The  Plan  is  intended  as  a  replacement  for  certain  compensation
arrangements for  non-employee  directors in effect prior to the Effective Date,
including  the  Plan  prior  to  this   amendment  and   restatement,   and  the
Corporation's Directors' Deferred Fee Plan (collectively, the "Prior Programs").
The Prior  Programs  will  continue to apply in the future only with  respect to
applicable  compensation earned by non-employee directors for periods of service
prior to July 1, 1997.

         1.2.  Purpose of the Plan.  The  purpose of the Plan is to promote  the
achievement of long-term  objectives of the  Corporation by linking the personal
interests of non-employee  directors to those of the Corporation's  stockholders
and to attract and retain non-employee directors of outstanding competence.

         1.3 Duration of the Plan.  The Plan will  commence as of the  Effective
Date and shall  remain in effect  until  terminated  or  amended by the Board of
Directors pursuant to Article 9.


Article 2.        Definitions

         In  addition to the terms  defined in the Plan,  these terms shall have
the meanings set forth below:

         (a)      "Deferred  Stock Unit" or "Unit" means an award  acquired by a
                  Participant as a measure of participation  under the Plan, and
                  having a value which changes in direct  relation to changes in
                  the  value  in  the  relevant  number  of  Shares  during  the
                  applicable period.

         (b)      "Fair  Market  Value" shall equal the mean of the high and low
                  sales prices of a Share on The New York Stock  Exchange on the
                  relevant date, or, if there were no sales on such date, on the
                  last trading date preceding the relevant date.


Article 3.        Administration

         3.1 The Committee on Directors.  The Plan shall be  administered by the
Committee  on  Directors  (the  "Committee")  of the Board of  Directors  of the
Corporation, subject to the restrictions set forth in the plan.

         3.2 Administration by the Committee.  The Committee shall have the full
power,  discretion,  and  authority to interpret  and  administer  the Plan in a
manner which is consistent  with the Plan's  provisions.  In no event,  however,
shall  the  Committee  have  the  power to  determine  Plan  eligibility,  or to
determine the number,  the value, the vesting period, or the timing of awards to
be made under the Plan (all such determinations  being automatic pursuant to the
provisions of the Plan).

         3.3 Decisions  Binding.  All  determinations  and decisions made by the
Committee  pursuant to the Plan,  and all related  orders or  resolutions of the
Committee shall be final, conclusive,  and binding on all persons, including the
Corporation, its shareholders,  employees,  directors,  Participants,  and their
estates and beneficiaries.


Article 4.        Participation.


         4.1  Participation.  Persons  eligible to  participate  in the Plan are
limited to  non-employee  directors  who are serving on the Board on the date of
each scheduled award under the Plan ("Participants").


Article 5.        Annual Equity Grants for Participants.

         5.1 Annual Equity Grants.  Commencing  July 1, 1998,  each  Participant
shall receive an annual equity grant of five hundred (500) Shares on July 1 each
year, or a proportionate  share of such grant based on full months of service as
a non-employee  director  since the prior July 1. In lieu of issuing  fractional
Shares, the Corporation shall round up to the nearest full Share.

         5.2 Timing of Payout.  Certificates for Shares awarded pursuant to this
Article 5 shall be issued as soon as administratively practicable following July
1 each year.

         5.3 Deferral  Election.  In lieu of receiving  his or her annual equity
grant in Shares,  any  Participant  may elect to receive all or a portion of any
such grant in the form of Deferred Stock Units.  Any such election shall be made
pursuant to Article 7.

         5.4 Biennial  Review.  The Committee shall conduct a biennial review of
the appropriateness of the annual equity awards granted pursuant to this Article
5. In the event the  Committee  determines  that an  adjustment in the amount of
equity awards  pursuant to this Article 5 is  appropriate,  the Committee  shall
make a recommendation to the Board for an appropriate amendment.


Article 6.        Retainer Share Payments

         6.1 Portion of Retainers Paid in Shares.  During the term of this Plan,
each Participant  shall receive  twenty-five  percent (25%) of his or her annual
retainer for board  service in the form of Shares,  payable as the third quarter
installment of such annual retainer.

         6.2 Number of Shares Paid.  The number of Shares to be issued  pursuant
to Section 6.1 will be  determined  on September  25th of each year (or the next
trading  date if such date is not a date on which  shares  are traded on The New
York Stock  Exchange),  and shall equal  twenty-five  percent  (25%) of the then
current annual retainer for board service, divided by the Fair Market Value of a
Share on such date. In lieu of issuing  fractional Shares, the Corporation shall
round up to the nearest full share.

         6.3 Timing of Payout.  Certificates for Shares payable pursuant to this
Article 6 shall be issued as soon as administratively  practicable following the
conclusion of the third calendar quarter.


Article 7.        Annual Deferral Opportunity

         7.1  Termination of Prior  Programs;  Deferral of Retainers and Meeting
Fees. The Prior Programs are hereby terminated. In lieu thereof, any Participant
may elect  during the term of this Plan to receive  all or a portion of the cash
component of his or her annual retainer or meeting fees for board service in the
form of Deferred Stock Units. Any Participant may also elect to receive all or a
portion of his or her annual equity grant awarded pursuant to Section 5.1 in the
form of Deferred Stock Units. Elections to receive Deferred Stock Units shall be
irrevocable and shall be subject to the provisions of this Article 7 and Article
8.

         7.2 Annual Deferral Election.  Any election to receive all or a portion
of the cash component of a Participant's annual retainer, meeting fees or annual
equity grant in the form of Deferred Stock Units shall be made by December 1 for
all payments to be made in the succeeding  calendar year.  Each new  Participant
shall make his or her election  upon election to the Board.  Deferral  elections
may only be made in ten percent (10%) increments.

         7.3 Number of Deferred Stock Units.  The number of Deferred Stock Units
to be granted in connection with an election pursuant to Section 7.2 shall equal
(x) the number of Shares being  deferred,  in the case of annual equity  grants,
and (y) the dollar value of the portion of the annual  retainer and meeting fees
being  deferred,  divided by the Fair Market Value of a Share on the last day of
the applicable quarter, in the case of installments of annual retainers,  or the
applicable meeting date, in the case of meeting fees.

         7.4 Vesting of Deferred Stock Units. Subject to the terms of this Plan,
all  Deferred  Stock  Units  acquired  under this  Article 7 shall vest upon the
acquisition of such Deferred Stock Units.


Article 8.        Deferred Stock Units

         8.1 Value of Deferred Stock Units.  Each Deferred Stock Unit shall have
a value  that is  equal  to the Fair  Market  Value  of a Share on the  relevant
valuation  date, it being  understood that subsequent to the date of an award or
acquisition  of a  Deferred  Stock  Unit,  its  value  shall  change  in  direct
relationship to changes in the Fair Market Value of a Share.

         8.2  Dividend  Equivalents.  Dividend  equivalents  shall be  earned on
Deferred  Stock Units  provided  under this Plan and shall be converted  into an
equivalent  amount of  Deferred  Stock  Units based upon the value of a Deferred
Stock Unit on the payment date of the related dividend.  The converted  Deferred
Stock Units will be fully vested upon conversion.

         8.3 Timing and Amount of Payout.  Except as provided  otherwise  in the
Plan,  the amount payable to a Participant  shall be the aggregate  value of the
Participant's  vested  Deferred  Stock  Units,  if any,  on the  date  that  the
Participant terminates his or her service on the Board, normally payable in cash
in a lump sum within thirty (30) days following the Participant's termination of
service on the Board. In lieu of a lump sum payment, a Participant may elect, in
a  writing  filed  with the  Corporate  Secretary  of the  Corporation  prior to
termination  of his or her Board service,  to receive  payment of such amount in
cash in two installments. The first installment, equal to fifty percent (50%) of
such amount,  shall be made within thirty (30) days following the  Participant's
termination of service on the Board. The second installment,  including interest
credited at the prime  interest  rate of The First  National  Bank of Chicago in
effect on the date of such  termination,  shall be made one year after the first
installment.

         8.4 Deferred  Stock Unit  Account.  A Deferred  Stock Unit Account (the
"Account")  shall be  established  and  maintained by the  Corporation  for each
Participant  receiving Deferred Stock Units under the Plan. As the value of each
Deferred Stock Unit changes pursuant to Section 8.1, the Account  established on
behalf of each Participant shall be adjusted accordingly.  Each Account shall be
the record of the Deferred Stock Units granted to the Participant  under Article
7 of the Plan, shall be maintained solely for accounting purposes, and shall not
require a segregation of any Corporation assets.

         8.5 Annual  Reports.  Participants  with  Deferred  Stock  Units  shall
receive annual reports providing  detailed  information about their Accounts and
changes in their Accounts during the preceding year.


Article 9.        Amendment, Modification, and Termination

         9.1 Amendment,  Modification, and Termination. The Board may terminate,
amend, or modify the Plan at any time and from time to time.

         9.2 Awards Previously Granted.  Unless required by law, no termination,
amendment,  or modification  of the Plan shall in any material manner  adversely
affect any award previously provided under the Plan, without the written consent
of the Participant holding such award.


Article 10.       Miscellaneous

         10.1 Severability. In the event any provision of the Plan shall be held
illegal or invalid for any reason, the illegality or invalidity shall not affect
the remaining parts of the Plan, and the Plan shall be construed and enforced as
if the illegal or invalid provision had not been included.

         10.2 Benefit Transfers. The interests of any Participant or beneficiary
entitled to payments hereunder shall not be subject to attachment or garnishment
or other legal process by any creditor of any such  Participant  or  beneficiary
nor shall  any such  Participant  or  beneficiary  have any  right to  alienate,
anticipate,  commute,  pledge, encumber, or assign any of the benefits or rights
which he or she may expect to receive, contingently or otherwise under this Plan
except as may be  required by the tax  withholding  provisions  of the  Internal
Revenue Code of 1986  ("Code") or of a state's  income tax act.  Notwithstanding
the foregoing,  amounts  payable with respect to a Participant  hereunder may be
paid as follows:

         (a)      Payments  with respect to a disabled or  incapacitated  person
                  may be paid to such  person's  legal  representative  for such
                  person's  benefit,  to a custodian  under the Uniform Gifts or
                  Transfers  to Minors  Act of any state,  or to a  relative  or
                  friend of such person for such person's benefit; and

         (b)      Transfers by the  Participant  to a grantor trust  established
                  pursuant to Sections 674, 675, 676 and 677 of the Code for the
                  benefit  of the  participant  or a person or  persons  who are
                  members of his or her immediate  family (or for the benefit of
                  their  descendants)  shall be  recognized  and  given  effect,
                  provided that any such transfer has not been disclaimed  prior
                  to the payment, and the trustee of such trust certifies to the
                  Committee that such transfer  occurred  without any payment of
                  consideration for such transfer.

         10.3 Beneficiary Designation. Each Participant under the Plan may, from
time  to  time,  name  any  beneficiary  or  beneficiaries  (who  may  be  named
contingently or  successively)  to whom any benefit under the Plan is to be paid
in the  event of his or her  death.  Each  designation  will  revoke  all  prior
designations by the same Participant, shall be in a form as provided in Appendix
A hereto,  and will be effective  only when filed by the  Participant in writing
with the Corporate Secretary of the Corporation,  acting on behalf of the Board,
during his or her  lifetime.  In the absence of any such  designation,  benefits
remaining unpaid at the  Participant's  death shall be paid to the Participant's
estate.

         10.4 No Right of  Nomination.  Nothing  in this Plan shall be deemed to
create any  obligation  on the part of the Board to nominate  any  director  for
reelection by the Corporation's shareholders.


         10.5  Shares  Available.  The  Shares  delivered  under the Plan may be
either  treasury  shares,  originally  issued  Shares,  or Shares that have been
reacquired by the Corporation, including shares purchased in the open market.

         10.6 Stock  Splits/Stock  Dividends.  In the event of any change in the
outstanding   Shares  of  the   Company   by   reason   of  a  stock   dividend,
recapitalization,  merger,  consolidation,  split-up,  combination,  exchange of
Shares,  or the like,  the aggregate  number of and class of Shares and Deferred
Stock Units awarded  hereunder may be  appropriately  adjusted by the Committee,
whose determination shall be conclusive.

         10.7 Successors. All obligations of the Corporation under the Plan with
respect to awards  granted  hereunder  shall be binding on any  successor to the
Corporation,  whether the existence of such  successor is the result of a direct
or  indirect  purchase,   merger,   consolidation,   or  otherwise,  of  all  or
substantially all of the business and/or assets of the Corporation.

         10.8  Requirements  of Law. The granting of awards under the Plan shall
be subject to all applicable laws, rules, and regulations, and to such approvals
by  any  governmental  agencies  or  national  securities  exchanges  as  may be
required.

         10.9  Governing  Law. The Plan, and all agreements hereunder,  shall be
construed in accordance with and governed by the laws of the State of Delaware.



Chicago, Illinois
July 1, 1997

<PAGE>
APPENDIX A

                                 USG CORPORATION
                           STOCK COMPENSATION PROGRAM
                           FOR NON-EMPLOYEE DIRECTORS


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

                               Name (Please Print)

In the event of my  death,  the  following  person is to  receive  any  benefits
payable under the USG Corporation  Stock  Compensation  Program for Non-Employee
Directors ("Plan").

NOTE: The primary beneficiary(ies) will receive your Plan benefits. If more than
one primary  beneficiary  is  indicated,  the benefits  will be split among them
equally.  If you desire to provide for  distribution  of benefits  among primary
beneficiaries on other than an equal basis, please attach a sheet explaining the
desired  distribution  in full  detail.  If the primary  beneficiary(ies)  is no
longer living, the secondary  beneficiary(ies)  will receive the benefits,  in a
similar manner as described above for the primary beneficiary(ies).

           o Primary Beneficiary              o Secondary Beneficiary


- --------------------------------------------------------------------------------
Last Name                   First              M.I.                 Relationship

- --------------------------------------------------------------------------------
Street Address                              City, State, Zip Code

- --------------------------------------------------------------------------------
Beneficiary Social Security or Tax ID Number


            o Primary Beneficiary              o Secondary Beneficiary


- --------------------------------------------------------------------------------
Last Name                           First       M.I.                Relationship

- --------------------------------------------------------------------------------
Street Address                               City, State, Zip Code

- --------------------------------------------------------------------------------
Beneficiary Social Security or Tax ID Number


If a trust or other arrangement is listed above, include name, address, and date
of arrangement below:

- --------------------------------------------------------------------------------
Name                                 Address                             Date

o For  additional  beneficiary,  check  here and attach an  additional  sheet of
paper.

This  supersedes any  beneficiary  designation  previously made by me under this
Plan. I reserve the right to change the beneficiary at any time.



- ---------------------------      Date: ---------------------------
Sign Your Full Name Here

- ---------------------------
Your Social Security Number


Date received by USG Corporation By: ----------------------

<PAGE>


                            ANNUAL DEFERRAL ELECTION
                                 USG CORPORATION
                           STOCK COMPENSATION PROGRAM
                                       FOR
                             NON-EMPLOYEE DIRECTORS


         The undersigned  Participant in the USG Corporation Stock  Compensation
Program for Non-Employee Directors hereby makes the following election:

     (1) Annual equity grant.  The amount of percent (to 100% in10%  increments)
of my annual  equity  grant  payable  to me after  January  1, 1998 and  through
December 31, 1998 shall be deferred. Such amount shall be credited to a Deferred
Stock Unit Account  established and maintained for my benefit under the terms of
the Plan.

     (2) Cash annual retainer  payments.  The amount of percent (to a maximum of
100% in 10% increments) of my director's  annual retainer  payable to me in cash
after  January 1, 1998 and through  December  31, 1998 shall be  deferred.  Such
amount  shall be  credited  to a Deferred  Stock Unit  Account  established  and
maintained for my benefit under the terms of the Plan.

     (3) Cash  meeting  fee  payments.  The  amount of  percent  (to 100% in 10%
increments)  of my  director's  cash meeting fees payable to me after January 1,
1998 and through  December  31,  1998 shall be  deferred.  Such amount  shall be
credited to a Deferred  Stock Unit Account  established  and  maintained  for my
benefit under the terms of the Plan.

     I acknowledge  that this  irrevocable  election and my rights hereunder are
subject to the terms and conditions of the USG  Corporation  Stock  Compensation
Program for Non-Employee Directors.



Date:
     ---------------------------


Signature of Participant:
                         -------------------------------



Name of Participant:
                    ------------------------------------


- --------------------------------------------------------------------------------
First             Middle                Last              Social Security Number



RETURN THIS ELECTION ALONG WITH THE USG CORPORATION STOCK COMPENSATION PROGRAM
FOR NON-EMPLOYEE DIRECTORS BENEFICIARY FORM TO:   DEAN H. GOOSSEN, CORPORATE
SECRETARY.

<PAGE>



              EXECUTIVE SUMMARY OF KEY ELEMENTS: STOCK COMPENSATION
                       PROGRAM FOR NON-EMPLOYEE DIRECTORS


         I.       Annual Grant of Stock

                  An annual grant,  presently set at 500 shares,  will be issued
                  each July 1st to non-employee directors in service at the time
                  of the grant.  Those  directors  who have  served less than 12
                  full months,  counted from the prior July 1st,  will receive a
                  pro-rated  grant as provided by the Plan.  Directors will have
                  the option of  deferring  all or a portion of the annual grant
                  by conversion  of the deferred  portion into  "deferred  stock
                  units" on a one  Share/one  unit basis.  Deferred  share units
                  will fluctuate in value and become taxable as described in III
                  below  and be  paid  out in  cash as  described  in IV  below.
                  Portions of the annual grant not converted into deferred stock
                  units  become  taxable  compensation  at the time the grant is
                  issued.

         II.      Annual Retainer

                  The current annual retainer is $26,000. The new Plan continues
                  the requirement  that  one-quarter of this retainer be paid in
                  the  form  of  USG  Shares,   payable  as  the  third  quarter
                  installment.   These  shares  are  delivered  as  soon  as  is
                  practical  following the  September  25th  valuation  date. No
                  deferral of these shares is  permitted  and they thus become a
                  taxable compensation item at the time of their delivery.

         III.     Annual Deferral Opportunities

                  The  remainder  of the annual  retainer as well as all meeting
                  and  committee  fees are paid in cash but may be deferred,  in
                  part or in whole (in 10% increments) upon your election.  If a
                  deferral   election   is  made,   the   portion  of  the  cash
                  compensation  so deferred will be converted to "deferred stock
                  units"  whose  initial  value will be  equivalent  to the cash
                  compensation   deferred.   These  deferred  stock  units  will
                  fluctuate  in  value  exactly  as  the  value  of a USG  Share
                  fluctuates. In addition, your deferred stock unit account will
                  be  credited  with  dividend  equivalents.   Any  compensation
                  deferred  under this plan will not be taxable  until  actually
                  paid out (subsequent to retirement).

         IV.      Timing of Deferred Stock Unit Account Pay-out

                  Your Deferred  Stock Unit account  balance will be paid out in
                  cash in a lump  sum  within  thirty  days  of your  retirement
                  unless you elect in writing  to  receive  your  payment in two
                  installments.  If the installment method is elected, the first
                  installment equal to fifty percent of such amount will be paid
                  within  thirty days of the date of  retirement  and the second
                  installment one year later.  During the intervening  year your
                  remaining  account  balance will be credited  with earnings at
                  the prime rate of The First National Bank of Chicago. You will
                  have a taxable event upon each payout.



<TABLE>

                                   EXHIBIT 13
                                 USG CORPORATION
                                FINANCIAL REVIEW
<CAPTION>
                  <S>                                                                                <C>

                                                                                                     Page

                  MANAGEMENT'S DISCUSSION AND ANALYSIS                                                65

                  CONSOLIDATED FINANCIAL STATEMENTS
                  Statement of Earnings                                                               70
                  Balance Sheet                                                                       71
                  Statement of Cash Flows                                                             72

                  NOTES TO FINANCIAL STATEMENTS
                  1.  Significant Accounting Policies                                                 73
                  2.  Earnings Per Share                                                              74
                  3.  Financing Arrangements                                                          74
                  4.  Debt                                                                            75
                  5.  Financial Instruments and Risk Management                                       76
                  6.  Purchase of Subsidiary Minority Interest                                        77
                  7.  Writedown of Assets                                                             77
                  8.  Income Taxes                                                                    77
                  9.  Inventories                                                                     78
                  10. Property, Plant and Equipment                                                   78
                  11. Leases                                                                          78
                  12. Employee Retirement Plans                                                       78
                  13. Stock-Based Compensation                                                        79
                  14. Stockholders' Equity                                                            80
                  15. Industry and Geographic Segments                                                81
                  16. Litigation                                                                      83

                  REPORT OF MANAGEMENT                                                                87

                  REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS                                            87

                  SELECTED QUARTERLY FINANCIAL DATA                                                   88

                  FIVE-YEAR SUMMARY                                                                   89
</TABLE>


                                 USG CORPORATION


MANAGEMENT'S DISCUSSION AND ANALYSIS OF RESULTS OF OPERATIONS AND FINANCIAL
CONDITION

Overview

1997 was an excellent year for USG Corporation.  Strong  operating  results were
realized by all of USG's  businesses.  Increased  demand led to record levels of
shipments  for all major  product  lines.  In pursuit  of its goal of  improving
financial flexibility, USG achieved its debt reduction objective and was awarded
an investment grade BBB rating by Standard & Poor's.  Significant  progress also
was made toward the Corporation's  strategic  objectives of investing for growth
and maintaining operational excellence.

USG continues to report EBITDA (earnings before interest,  taxes,  depreciation,
depletion,  amortization and certain other income and expense items) as a result
of its financial  restructuring  in 1993 and the  restructuring's  effect (i.e.,
fresh start accounting  charges) on financial  reporting  through  September 30,
1997.  While EBITDA is primarily  used to facilitate  comparisons of current and
historical  results, it can also be helpful in understanding cash flow generated
from  operations  that  is  available  for  taxes,   debt  service  and  capital
expenditures.  However,  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.

Results of Operations

Consolidated  Results. A bar chart entitled "Net Sales (millions of dollars)" on
page 19 of the Annual Report to Stockholders shows that for the years 1995, 1996
and 1997  (shown on the  x-axis)  the  Corporation  had net sales  (shown on the
y-axis) of $2,444 million,  $2,590 million and $2,874 million,  respectively.  A
bar chart  entitled  "EBITDA  (millions  of  dollars)"  on page 19 of the Annual
Report to  Stockholders  shows that for the years 1995,  1996 and 1997 (shown on
the x-axis) the  Corporation  had EBITDA  (shown on the y-axis) of $417 million,
$437 million and $572 million, respectively.

Net sales of $2,874 million in 1997  represented the sixth  consecutive  year of
improved  sales and an  increase  of $284  million,  or 11%,  over 1996.  EBITDA
increased for the fifth  consecutive  year,  amounting to $572 million,  up $135
million,  or 31%, from 1996. The strong results in 1997 were attributable to (i)
records for average  selling  price and  shipments  of  SHEETROCK  brand  gypsum
wallboard  (ii) record  sales of ceiling  tile and DONN  ceiling  grid and (iii)
record  shipments of SHEETROCK  joint compound and DUROCK cement board. In 1996,
net sales were up 6%, while EBITDA increased 5% versus 1995.

Gross profit as a percentage of net sales was 27.4% in 1997, compared with 24.9%
in 1996,  and 24.7% in 1995.  Gross  profit in 1996 was  lowered by a $7 million
provision  to cost of products  sold  associated  with  actions  implemented  to
improve the operating efficiencies of USG's European businesses.

In 1997, USG began modifying its computer-based systems that are affected by the
year  2000  date  change.  Anticipated  spending  for this  modification  is not
expected  to have a  material  impact on the  Corporation's  ongoing  results of
operations.

Selling  and  administrative  expenses  of $281  million in 1997  increased  $13
million, or 5%, over 1996. Expenses of $268 million in 1996 were up $24 million,
or 10%, compared with 1995. The increase for each year primarily reflects higher
levels of expenses  related to  incentive  compensation  and benefits as well as
costs to consolidate and upgrade customer  service  functions for the gypsum and
ceilings  businesses.  As a percent of net  sales,  selling  and  administrative
expenses were 9.8% in 1997, 10.3% in 1996 and 10.0% in 1995.

The noncash,  no-tax-impact  amortization of excess reorganization value reduced
operating profit by $127 million in 1997 and by $169 million in each of 1996 and
1995. Excess  reorganization value was established in connection with USG's 1993
financial  restructuring  that was accounted  for using the  principles of fresh
start accounting. Excess reorganization value was scheduled to be amortized over
a five-year  period through April 1998.  However,  as of September 30, 1997, the
remaining  balance of $83 million was offset by the  elimination  of a valuation
allowance. See "Note 8. Income Taxes" for additional information.

Interest  expense  continued  to decline in 1997 as a result of debt  reduction.
Interest expense of $60 million in 1997 was down 20% from 1996. Interest expense
of $75 million in 1996 declined 24% from the 1995 level of $99 million.

In 1995, the Corporation  recorded a $30 million pretax ($24 million  after-tax)
charge in connection with the disposal of its insulation manufacturing business.
This charge is reflected in other expense, net in the Consolidated  Statement of
Earnings. See "Note 7. Writedown of Assets" for additional information.

The  Corporation's  income tax  expense  is  computed  based on pretax  earnings
excluding the noncash amortization of excess  reorganization value, which is not
deductible for federal income tax purposes. In 1997, income tax expense amounted
to $172 million, compared with $117 million in 1996 and $97 million in 1995. The
Corporation's  effective tax rates for 1997, 1996 and 1995 were 53.9%, 88.9% and
149.0%, respectively.  Excluding the amortization of excess reorganization value
and, in 1995, a $15 million write-off of excess  reorganization value associated
with the writedown of the insulation business,  the Corporation's 1997, 1996 and
1995 effective tax rates were 38.6%, 38.9% and 39.0%, respectively. See "Note 8.
Income Taxes" for additional information.

USG's reported net earnings in 1997 were $148 million,  and diluted earnings per
share were $3.03. These earnings were net of the noncash  amortization of excess
reorganization value of $127 million, or $2.60 per diluted share.

In 1996, reported net earnings amounted to $15 million, and diluted earnings per
share were $0.31.  These  earnings were net of (i) the noncash  amortization  of
excess reorganization value of $169 million and (ii) the noncash amortization of
reorganization  debt  discount  of $1  million  included  in  interest  expense.
Together,  these items reduced 1996 net earnings by $170  million,  or $3.58 per
diluted share.

In 1995,  USG  reported a net loss of $32 million and a loss per share of $0.71.
This loss included (i) the noncash  amortization of excess  reorganization value
of $169 million (ii) the noncash amortization of reorganization debt discount of
$4 million  included  in interest  expense  and (iii) the $24 million  after-tax
writedown of the  insulation  business.  Together,  these items reduced 1995 net
earnings by $197 million, or $4.37 per share.


Market  Conditions  and Outlook.  Based on  preliminary  data issued by the U.S.
Bureau of the Census,  U.S. housing starts were an estimated 1.474 million units
in 1997.  Housing  starts  totaled 1.477 million units in 1996 and 1.354 million
units in 1995.  Despite the virtually  unchanged level of housing starts in 1997
as compared  with 1996,  the U.S.  wallboard  market  continued to grow in 1997.
Record U.S. industry  shipments of wallboard were up 3% versus 1996, due in part
to very strong demand from  remodeling and  nonresidential  markets.  Repair and
remodel activity  continued its upward trend in 1997. As for new  nonresidential
construction,  the finishing of nonresidential interiors follows contract awards
by as much as a year. As a result,  demand from this market improved in 1997 due
to a 1%  increase  in U.S.  nonresidential  construction  in 1996 versus 1995 as
measured in floor space for which contracts were awarded.

Barring  any major  change in the U.S.  economy,  new  residential  construction
should continue at a relatively high level in 1998. Demand for USG products from
both  residential  and  nonresidential  repair and  remodeling  is  expected  to
continue its upward trend in 1998. Nonresidential  construction rose 10% in 1997
as compared with 1996.  This increase should be beneficial to USG in 1998 due to
the lag in the  finishing  of  nonresidential  interiors  of  roughly  one year.
Construction  activity in Canada and Mexico is expected to maintain the recovery
begun in 1997.  USG's  exposure to markets  outside  North  America is primarily
concentrated  in Europe but also includes  sales to Asia and Latin  America.  We
anticipate  that demand in Eastern  Europe and Latin  America  will  continue to
grow, while  conditions in Western Europe will remain stable.  The prospects for
Asian construction  markets are not good, but USG's presence there is relatively
minor.
<TABLE>
                                                  USG CORPORATION

Core Business Results
(millions)                                           Net Sales                                  EBITDA
- ----------                                -------------------------------           ------------------------------
                                          1997         1996          1995           1997         1996         1995
                                          ----         ----          ----           ----         ----         ----
<CAPTION>
<S>                                   <C>          <C>          <C>             <C>          <C>          <C>
North American Gypsum:
U.S. Gypsum Company                   $   1,565    $   1,390    $    1,309      $   458      $   347      $    327
L&W Supply Corporation                      981          841           753           36           29            26
CGC Inc. (gypsum)                           124          114           102           20           16            11
Other subsidiaries                           95           83            75           28           25            22
Eliminations                               (427)        (361)         (315)          (3)           -             -
                                          -----        -----         -----          ---          ---           ---    
Total                                     2,338        2,067         1,924          539          417           386
                                          -----        -----         -----          ---          ---           ---

Worldwide Ceilings:
USG Interiors, Inc.                         425          398           385           65           53            58
USG International                           229          228           235           13            2             5
CGC Inc. (ceilings)                          34           30            28            3            3             4
Eliminations                                (54)         (44)          (39)           -            -             -
                                            ---          ---           ---           --           --            --      
Total                                       634          612           609           81           58            67
                                            ---          ---           ---           --           --            --

Corporate                                     -            -            -           (48)         (38)          (36)
Eliminations                               (98)         (89)           (89)           -            -             -
                                           ---          ---            ---          ---          ---           ---      

Total USG Corporation                     2,874        2,590         2,444          572          437           417
                                          =====        =====         =====          ===          ===           ===
 
</TABLE>

North American Gypsum. A bar chart entitled "Net Sales (millions of dollars)" on
page 21 of the Annual Report to Stockholders shows that for the years 1995, 1996
and 1997 (shown on the x-axis) North American Gypsum had net sales (shown on the
y-axis) of $1,924 million,  $2,067 million and $2,338 million,  respectively.  A
bar chart  entitled  "EBITDA  (millions  of  dollars)"  on page 21 of the Annual
Report to  Stockholders  shows that for the years 1995,  1996 and 1997 (shown on
the  x-axis)  North  American  Gypsum had EBITDA  (shown on the  y-axis) of $386
million, $417 million and $539 million, respectively.

Net sales of $2,338 million in 1997 were up $271 million,  or 13%, and EBITDA of
$539 million rose $122 million,  or 29%, compared with 1996. For 1996, net sales
of $2,067 million  increased  $143 million,  or 7%, while EBITDA of $417 million
increased $31 million, or 8%, over 1995.

Strong  results in 1997 for  United  States  Gypsum  Company  primarily  reflect
records for average  price and  shipments of  SHEETROCK  gypsum  wallboard.  The
average  selling  price of SHEETROCK  wallboard in 1997 was $122.65 per thousand
square feet, up 11% compared with the 1996 average price of $110.56. The average
price in 1995 was $110.44.  Shipments of SHEETROCK wallboard totaled 8.4 billion
square  feet,  compared  with 8.0  billion  square  feet in 1996 and 7.6 billion
square feet in 1995.  In addition,  shipments of  SHEETROCK  joint  compound and
DUROCK cement board also set records in 1997. U.S. Gypsum's  manufacturing costs
for SHEETROCK  wallboard  were down  slightly in 1997 due to improved  operating
efficiencies  resulting  from  cost-reduction  projects  implemented in 1996 and
1997. Comparing 1996 with 1995, lower furnish prices for wastepaper, the primary
raw  material of  wallboard  paper,  resulted in a 4% decrease in  manufacturing
costs. U.S.  Gypsum's plants operated at 99% of capacity in 1997,  compared with
the estimated average rate of 96% for the U.S. industry.  In 1996, U.S. Gypsum's
plants operated at 94% of capacity.

L&W Supply Corporation,  USG's building products distribution business, reported
record net sales in 1997 due to record  shipments of wallboard  and record sales
of   complementary   building   materials.   EBITDA  for  L&W  Supply   improved
significantly  in each of the  past  three  years as a  result  of gross  profit
improvements  for all of its product lines.  As of December 31, 1997, L&W Supply
operated a total of 176 locations in the United States.

CGC Inc.'s  gypsum  business  experienced  improved net sales and EBITDA in both
1997 and 1996 primarily due to stronger domestic shipments in eastern Canada and
exports to the United States.

Worldwide  Ceilings.  A bar chart entitled "Net Sales  (millions of dollars)" on
page 22 of the Annual Report to Stockholders shows that for the years 1995, 1996
and 1997 (shown on the x-axis)  Worldwide  Ceilings  had net sales (shown on the
y-axis) of $609  million,  $612 million and $634  million,  respectively.  A bar
chart entitled "EBITDA (millions of dollars)" on page 22 of the Annual Report to
Stockholders  shows that for the years 1995, 1996 and 1997 (shown on the x-axis)
Worldwide Ceilings had EBITDA (shown on the y-axis) of $67 million,  $58 million
and $81 million, respectively.

Net sales of $634 million in 1997 were up $22 million,  or 4%, and EBITDA of $81
million increased $23 million,  or 40%,  compared with 1996.  Adjusting for a $7
million  charge  taken  in 1996 to  improve  operating  efficiencies  for  USG's
European  businesses,  EBITDA in 1997  increased  25%. The increase in net sales
reflects record sales of ceiling tile and DONN ceiling grid.  These records were
attributable  to  strong  demand  in the U.S.  nonresidential  market  (both new
construction and renovation) and growing  international  demand.  EBITDA in 1997
was favorably affected by higher volume and prices,  reduced manufacturing costs
and improved international  operating  efficiencies.  USG's international sales,
which are primarily concentrated in Europe, have not been materially affected by
recent economic events in Asia.

Net sales in 1996 for Worldwide  Ceilings  rose slightly to $612 million,  while
EBITDA of $58 million fell $9 million,  or 13%, compared with 1995. The slightly
higher sales in 1996 reflect record  shipments of ceiling tile at higher average
selling prices and increased  shipments of ceiling grid. These improvements were
partially  offset by the absence of  full-year  results for the U.S.  insulation
manufacturing  business  that was sold in April 1996.  The lower level of EBITDA
was primarily attributable to (i) a $7 million provision associated with actions
implemented to improve the operating  efficiencies of USG's European  businesses
(ii) expenses  associated  with  enhancing  customer  service  systems and (iii)
start-up  costs  related to a new ceiling tile line placed in service in 1996 at
the Greenville, Miss., plant.


Liquidity and Capital Resources

Following  its 1993  financial  restructuring,  USG was  engaged in a  financial
strategy of reducing  debt and growing  its gypsum,  ceilings  and  distribution
businesses  through  a  balanced  application  of free cash  flow  between  debt
reduction and capital  expenditures.  Two  objectives of this strategy  involved
reaching a target debt level of $650 million  within five years and achieving an
investment grade rating on its capital structure.

As of December 31, 1997,  total debt amounted to $620 million,  reflecting a net
reduction  since  May  1993 of $936  million.  In the  fourth  quarter  of 1997,
Standard & Poor's raised its rating of USG's debt to investment grade BBB. As of
December  31,  1997,  Moody's  rating  of USG  debt  was Ba1,  one  level  below
investment grade.  Going forward,  USG's financial  strategy will be to increase
the proportion of free cash flow it spends on capital projects,  while reviewing
possible applications of its cash for other corporate purposes.

A bar chart  entitled "Debt  Principal  (millions of dollars)" on page 23 of the
Annual Report to Stockholders  shows that as of December 31, 1995, 1996 and 1997
(shown on the x- axis) the  Corporation's  principal amount of total debt (shown
on the y-axis) was $926 million, $772 million and $620 million,  respectively. A
bar chart entitled  "Capital  Spending  (millions of dollars)" on page 23 of the
Annual  Report to  Stockholders  shows  that for the years  1995,  1996 and 1997
(shown on the x-axis) the Corporation had capital spending (shown on the y-axis)
of $147 million, $120 million and $172 million, respectively.

Debt Reduction.  In 1997, total debt was reduced $152 million,  or 20%, from the
December 31, 1996, total of $772 million.  Debt repayments during 1997 primarily
consisted  of $85 million of revolving  bank loans,  $48 million of 8.75% senior
debentures  due  2017  and $41  million  of 8%  senior  notes  due  1997.  These
repayments  were partially  offset by increased  borrowing on the  Corporation's
Canadian credit facility.

Capital  Expenditures.  Capital  expenditures  amounted to $172 million in 1997,
compared with $120 million in 1996. As of December 31, 1997,  the  Corporation's
capital expenditure commitments for the replacement, modernization and expansion
of  operations  amounted  to $363  million,  compared  with $173  million  as of
December 31, 1996.

In the North American Gypsum business,  ground was broken in June 1997 for a new
$110 million plant in Bridgeport,  Ala. This facility will manufacture SHEETROCK
brand wallboard  using 100% synthetic  gypsum and is expected to begin operation
in mid-1999.  Construction is also under way to build a $90 million  facility to
manufacture  gypsum  wood  fiber  panels at the  Gypsum,  Ohio,  plant.  The new
production line is expected to begin operating by the end of 1999. Complementing
this  investment  in the gypsum wood fiber  business  was the  acquisition  of a
gypsum fiber panel plant in Port Hawkesbury,  Nova Scotia,  in late 1997. Gypsum
wood fiber  products  manufactured  at these  plants will be marketed  under the
FIBEROCK  brand name.  In October 1997,  USG  announced  that it will invest $90
million to rebuild and modernize its  wallboard  manufacturing  line at the East
Chicago,  Ind., plant. This new line is also expected to begin production by the
end of 1999.  Additional  capital  investments  in 1997 included  cost-reduction
projects such as the  installation of stock cleaning  equipment to utilize lower
grades of recycled paper and the  installation  of processes to accommodate  the
use of synthetic gypsum at manufacturing  facilities where it is more economical
than natural sources of gypsum rock.

In the Worldwide  Ceilings  business,  construction began in early 1997 on a $35
million project that includes the  replacement of two old production  lines with
one modern,  high-speed  line at the ceiling tile plant in Cloquet,  Minn.  This
project will be completed by mid-1998.


The Corporation  periodically  evaluates  possible  acquisitions or combinations
involving other businesses or companies in industries and markets related to its
current  operations.  The Corporation  believes that its available  liquidity is
generally  adequate  to  support  most  opportunities  and that it has access to
additional financial resources to take advantage of other opportunities.


Working Capital. Working capital (current assets less current liabilities) as of
December 31, 1997, amounted to $264 million,  and the ratio of current assets to
current  liabilities was 1.7 to 1. As of December 31, 1996,  working capital was
$159 million,  and the ratio of current assets to current liabilities was 1.4 to
1.

Cash and cash  equivalents  as of December  31,  1997,  amounted to $72 million,
compared with $44 million as of December 31, 1996.  This increase  reflects 1997
net cash flows from operating  activities of $332 million,  partially  offset by
net cash flows to investing  and  financing  activities of $170 million and $134
million,  respectively.  Receivables  (net of reserves)  were $297 million as of
December 31, 1997, up from $274 million as of year-end 1996,  while  inventories
increased to $208 million from $185 million,  and accounts  payable rose to $146
million from $141 million. These increases reflect the greater level of business
in 1997.


Available Liquidity.  The Corporation has additional liquidity available through
several  financing  arrangements.  Revolving  credit  facilities  in the  United
States,  Canada and Europe allow the Corporation to borrow up to an aggregate of
$611  million  (including  a $125 million  letter of credit  subfacility  in the
United  States),  under which,  as of December 31, 1997,  outstanding  revolving
loans totaled $97 million and letters of credit issued and outstanding  amounted
to $84 million,  leaving the Corporation with $430 million of available  credit.
The Corporation had additional  borrowing capacity of $50 million as of December
31, 1997, under a revolving accounts receivable facility (see "Note 3. Financing
Arrangements").  A shelf  registration  statement  filed with the Securities and
Exchange  Commission  allows  the  Corporation  to offer  from time to time debt
securities,  shares of preferred and common stock or warrants to purchase shares
of common stock,  all having an aggregate  initial  offering price not to exceed
$300 million.  As of the filing date of the Corporation's  1997 Annual Report on
Form 10-K, no securities had been issued pursuant to this registration.


Legal Contingencies.  One of the Corporation's  subsidiaries,  U.S. Gypsum, is a
defendant  in asbestos  lawsuits  alleging  both  property  damage and  personal
injury.  See "Note 16.  Litigation"  for  information  concerning  the  asbestos
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. 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 "Note 16. Litigation" for additional information on environmental
litigation.


Forward-Looking  Statements.  This Management Discussion and Analysis, "Note 16.
Litigation" and other sections of this report contain forward-looking statements
related to management's expectations about future conditions. Actual business or
other conditions may differ  significantly  from  management's  expectations and
accordingly  affect the Corporation's  sales and profitability or other results.
Actual  results  may  differ due to factors  over which the  Corporation  has no
control, including economic activity such as new housing construction,  interest
rates and consumer  confidence;  competitive  activity such as price and product
competition;  increases  in raw material  and energy  costs;  and the outcome of
contested  litigation.  The  Corporation  assumes  no  obligation  to update any
forward-looking information contained in this report.
<PAGE>
<TABLE>
                                                  USG CORPORATION
                                        CONSOLIDATED STATEMENT OF EARNINGS




(millions, except per share data)                                              Years ended December 31,
- ---------------------------------                                              ------------------------
                                                                          1997           1996            1995
                                                                          ----           ----            ----
<CAPTION>
<S>                                                               <C>             <C>            <C>
Net sales.......................................................  $       2,874   $      2,590   $      2,444
Cost of products sold...........................................          2,087          1,945          1,841
                                                                          -----          -----          -----

Gross profit....................................................            787            645            603
   % of net sales...............................................           27.4           24.9           24.7

Selling and administrative expenses.............................            281            268            244
Amortization of excess reorganization value.....................            127            169            169
                                                                            ---            ---            ---

Operating profit................................................            379            208            190

Interest expense................................................             60             75             99
Interest income.................................................             (3)            (2)            (6)
Other expense, net..............................................              2              3             32
                                                                            ---            ---            ---

Earnings before income taxes....................................            320            132             65

Income taxes....................................................            172            117             97
                                                                            ---            ---            ---

Net earnings (loss).............................................            148             15            (32)
                                                                            ===            ===            === 

Net Earnings (Loss) Per Common Share:

   Basic........................................................           3.19           0.32          (0.71)
                                                                           ====           ====          ===== 

   Diluted......................................................           3.03           0.31          (0.71)
                                                                           ====           ====          ===== 
</TABLE>

The notes to financial statements are an integral part of this statement.
<PAGE>

<TABLE>
                                                  USG CORPORATION
                                            CONSOLIDATED BALANCE SHEET




(millions, except share data)                                                           As of December 31,
- -----------------------------                                                           ------------------
                                                                                       1997                1996
                                                                                       ----                ----
<S>                                                                             <C>                <C>
Assets
Current assets:
Cash and cash equivalents....................................................   $         72       $         44
Receivables (net of reserves of $17 and $17).................................            297                274
Inventories..................................................................            208                185
Current and deferred income taxes............................................             63                 46
                                                                                         ---                ---
     Total current assets....................................................            640                549
                                                                                         ---                ---
Property, plant and equipment, net...........................................            982                887
Excess reorganization value (net of accumulated amortization as
     of December 31, 1996 - $635)............................................              -                210
Other assets.................................................................            304                218
                                                                                         ---                ---
     Total assets............................................................          1,926              1,864
                                                                                       =====              =====

Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable.............................................................            146                141
Accrued expenses.............................................................            220                200
Debt maturing within one year................................................             10                 49
                                                                                         ---                ---
     Total current liabilities...............................................            376                390
                                                                                         ---                ---
Long-term debt...............................................................            610                706
Deferred income taxes........................................................            163                243
Other liabilities............................................................            630                548
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 46,780,845 and 45,724,561 shares (after
                  deducting 48,919 and 31,488 shares held in treasury).......              5                  5
Capital received in excess of par value......................................            258                231
Deferred currency translation................................................            (25)               (10)
Reinvested earnings (deficit)................................................            (91)              (249)
                                                                                         ---               ---- 
     Total stockholders' equity (deficit)....................................            147                (23)
                                                                                         ---                --- 
     Total liabilities and stockholders' equity..............................          1,926              1,864
                                                                                       =====              =====

</TABLE>

The notes to financial statements are an integral part of this statement.
<PAGE>
<TABLE>

                                                  USG CORPORATION
                                       CONSOLIDATED STATEMENT OF CASH FLOWS





(millions)                                                                      Years ended December 31,
- ----------                                                                      ------------------------
                                                                           1997           1996            1995
                                                                           ----           ----            ----
<CAPTION>
<S>                                                               <C>             <C>            <C>
Operating Activities:
Net earnings (loss).............................................  $         148   $         15   $        (32)

Adjustments to reconcile net earnings (loss) to net cash:
   Amortization of excess reorganization value..................            127            169            169
   Depreciation, depletion and amortization.....................             70             65             67
   Current and deferred income taxes............................             (2)            (8)            (8)
   Net (gain) loss on asset dispositions........................              -             (2)            27
(Increase) decrease in working capital:
   Receivables..................................................            (23)           (28)            24
   Inventories..................................................            (23)           (10)            (2)
   Payables.....................................................              5             10              8
   Accrued expenses.............................................             20             14            (27)
Increase in other assets........................................            (10)            (2)           (10)
Increase in other liabilities...................................             19             64             30
Other, net......................................................              1             (4)           (12)
                                                                            ---            ---            --- 
   Net cash flows from operating activities.....................            332            283            234
                                                                            ---            ---            ---

Investing Activities:
Capital expenditures............................................           (172)          (120)          (147)
Net proceeds from asset dispositions............................              2             10              7
Purchase of subsidiary minority interest........................              -            (49)             -
                                                                            ---            ---            ---    
   Net cash flows to investing activities ......................           (170)          (159)          (140)
                                                                           ----           ----           ---- 

Financing Activities:
Issuance of debt................................................            116             77            576
Repayment of debt...............................................           (265)          (231)          (804)
Short-term borrowings (repayments), net.........................             (3)             -              5
Issuances of common stock.......................................             18              4              2
                                                                            ---            ---            ---
   Net cash flows to financing activities.......................           (134)          (150)          (221)
                                                                           ----           ----           ---- 

Net Increase (Decrease) in Cash and Cash Equivalents............             28            (26)          (127)
Cash and cash equivalents at beginning of period................             44             70            197
                                                                            ---            ---            ---
Cash and cash equivalents at end of period......................             72             44             70
                                                                            ===            ===            ===

Supplemental Cash Flow Disclosures:
Interest paid...................................................             64             74             88
Income taxes paid...............................................            168            116            108
</TABLE>


The notes to financial statements are an integral part of this statement.


                                 USG CORPORATION
                          NOTES TO FINANCIAL STATEMENTS

1. Significant Accounting Policies

Nature  of  Operations.  Through  its   subsidiaries,   USG   Corporation   (the
"Corporation") is a leading  manufacturer and distributor of building materials,
producing  a  wide  range  of  products   for  use  in  new   residential,   new
nonresidential and repair and remodel construction,  as well as products used in
certain industrial  processes.  The Corporation's  operations are organized into
two core  businesses:  North American  Gypsum,  which  manufactures  and markets
gypsum wallboard and related  products in the United States,  Canada and Mexico,
and Worldwide  Ceilings,  which  manufactures and markets ceiling tile,  ceiling
grid and other interior systems products worldwide.  Distribution is carried out
through L&W Supply  Corporation,  a wholly owned  subsidiary of the Corporation;
building  materials  dealers;  home  improvement  centers  and other  retailers;
specialty wallboard distributors; and contractors.

Consolidation. The consolidated financial statements include the accounts of the
Corporation  and its  subsidiaries.  All significant  intercompany  balances and
transactions are eliminated in consolidation.

Use of Estimates.  The  preparation of financial  statements in conformity  with
generally accepted  accounting  principles requires management to make estimates
and assumptions.  These estimates and assumptions affect the reported amounts of
assets,  liabilities,  revenues and expenses.  Actual  results could differ from
these estimates.

Reclassifications.  Certain amounts in the prior years' financial statements and
notes thereto have been reclassified to conform with the 1997 presentation.

Revenue  Recognition.  The Corporation  recognizes  revenue upon the shipment of
products.

Cash and Cash Equivalents.  Cash and cash equivalents  primarily consist of time
deposits with original maturities of three months or less.

Inventory Valuation.  Most of the Corporation's  domestic inventories are valued
under the last-in,  first-out  ("LIFO")  method.  The remaining  inventories are
stated at the lower of cost or market under the first-in,  first-out ("FIFO") or
average  production  cost  methods.  Inventories  include  material,  labor  and
applicable factory overhead costs.

Property, Plant and Equipment. Property, plant and equipment are stated at cost,
except for those assets that were revalued  under fresh start  accounting in May
1993.  Provisions  for  depreciation  of  property,   plant  and  equipment  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.

Excess  Reorganization  Value.  In the third quarter of 1997,  the remaining $83
million balance of excess  reorganization  value was  eliminated.  This balance,
which  would  have  been  amortized  through  April  1998,  was  offset  by  the
elimination  of a valuation  allowance  in  accordance  with AICPA  Statement of
Position  90-7,  "Financial  Reporting by Entities in  Reorganization  Under the
Bankruptcy  Code"  ("SOP  90-7").  See "Note 8.  Income  Taxes"  for  additional
information.  Excess  reorganization value totaling $851 million was recorded in
1993 in connection with a comprehensive restructuring of the Corporation's debt.
The Corporation  accounted for the  restructuring  using the principles of fresh
start  accounting  as  required  by SOP 90- 7.  Pursuant  to  these  principles,
individual  assets and  liabilities  were adjusted to fair market value.  Excess
reorganization   value  was  the  portion  of  the   reorganization   value  not
attributable to specific assets.

Goodwill.  Goodwill is  amortized on a  straight-line  basis over a period of 40
years. On a periodic basis,  the Corporation  estimates the future  undiscounted
cash flows of the businesses to which  goodwill  relates in order to ensure that
the carrying  value of goodwill has not been  impaired.  Goodwill is included in
other assets on the Consolidated Balance Sheet.

Financial  Instruments.  The Corporation  uses derivative  instruments to manage
well-defined  interest rate,  energy cost and foreign  currency  exposures.  The
Corporation  does not use  derivative  instruments  for  trading  purposes.  The
criteria used to determine if hedge accounting  treatment is appropriate are (i)
the  designation  of the hedge to an  underlying  exposure  (ii)  whether or not
overall uncertainty is being reduced and (iii) if there is a correlation between
the value of the derivative instrument and the underlying obligation.

Interest Rate Derivative  Instruments:  The Corporation  utilizes  interest rate
swap  agreements to manage the impact of interest rate changes on its underlying
floating-rate  debt.  These  agreements are designated as hedges and qualify for
hedge accounting.  Amounts payable or receivable under these swap agreements are
accrued as an increase or decrease to interest  expense on a current  basis.  To
the  extent  the  underlying  floating-rate  debt is  reduced,  the  Corporation
terminates  swap  agreements  accordingly  so as  not  to  be  in an  overhedged
position.  In such cases, the Corporation  recognizes gains and/or losses in the
period the agreement is terminated.

Energy  Derivative  Instruments:  The Corporation  uses swap agreements to hedge
anticipated purchases of fuel to be utilized in the manufacturing  processes for
gypsum wallboard and ceiling tile. Under these swap agreements,  the Corporation
receives or makes payments based on the  differential  between a specified price
and the actual  closing  price for the current  month's  energy price  contract.
These  contracts  are  designated  as hedges and qualify  for hedge  accounting.
Amounts  payable or  receivable  under these swap  agreements  are accrued as an
increase or decrease to cost of products sold, along with the actual spot energy
cost of the corresponding underlying hedge transaction, the combination of which
amounts to the predetermined specified contract price.

Foreign  Exchange  Derivative  Instruments:  The Corporation has operations in a
number of  countries  and has  intercompany  transactions  among them and,  as a
result,   is  exposed  to  changes  in  foreign  currency  exchange  rates.  The
Corporation  manages  these  exposures  on a  consolidated  basis,  which allows
netting of certain  exposures to take advantage of any natural  offsets.  To the
extent the net exposures are hedged,  forward  contracts are used.  Gains and/or
losses on these  foreign  currency  hedges are  included in net  earnings in the
period in which the exchange rates change.

Foreign  Currency  Translation.  Net  currency  translation  gains or  losses on
foreign subsidiaries are included in deferred currency translation,  a component
of stockholders' equity.

Research and Development.  Research and development  expenditures are charged to
earnings as incurred and amounted to $19 million, $19 million and $18 million in
the years ended December 31, 1997, 1996 and 1995, respectively.

2.  Earnings Per Share

     In accordance with Statement of Financial Accounting Standards ("SFAS") No.
128,  "Earnings per Share,"  basic  earnings per share were computed by dividing
net  earnings  by  the  weighted  average  number  of  shares  of  common  stock
outstanding  during the year. The  reconciliation of basic earnings per share to
diluted earnings per share is shown in the following  table.  Computation of the
loss per share for 1995,  on a diluted  basis,  is omitted  because  options and
warrants have an antidilutive effect.

<TABLE>
(millions, except         Net      Shares    Per Share
 share data)           Earnings     (000)     Amount
 ---------------------------------------------------------
<CAPTION>
<S>                   <C>             <C>        <C>
1997
Basic earnings        $    148        46,269     $    3.19
Effect of Dilutive
 Securities:
Options                                  930
Warrants                               1,528
- ----------------------------------------------------------
Diluted earnings           148        48,727          3.03
==========================================================

1996
Basic earnings              15        45,542          0.32
Effect of Dilutive
 Securities:
Options                                  853
Warrants                               1,115
- ----------------------------------------------------------
Diluted earnings            15        47,510          0.31
==========================================================
</TABLE>
<TABLE>
As a result of the adoption of SFAS No. 128, the Corporation's reported earnings
per share ("EPS") for 1996 were restated as follows:
<CAPTION>
<S>                                         <C>
Primary EPS as reported                     $    0.31
Effect of SFAS No. 128                           0.01
- -----------------------------------------------------
Basic EPS as restated                            0.32
=====================================================

Fully diluted EPS as reported                    0.30
Effect of SFAS No. 128                           0.01
- -----------------------------------------------------
Diluted EPS as restated                          0.31
=====================================================
</TABLE>


3. Financing Arrangements

Accounts  Receivable  Facility.  The  Corporation  has  an  accounts  receivable
facility  (the  "Receivables  Facility")  in which USG  Funding  Corporation,  a
special-purpose subsidiary of the Corporation formed under Delaware law, entered
into agreements with United States Gypsum Company and USG Interiors,  Inc. These
agreements  provide  that USG Funding  purchases  trade  receivables  (excluding
intercompany receivables owed by L&W Supply) of U.S. Gypsum and USG Interiors as
generated,  in a transaction  designed to be a "true sale" under applicable law.
USG Funding is a party to a Master Trust  arrangement (the "Master Trust") under
which the purchased  receivables are then transferred to Chase Manhattan Bank as
Trustee to be held for the  benefit of  certificate  holders  in such  trust.  A
residual  interest  in  the  Master  Trust  is  owned  by  USG  Funding  through
subordinated certificates.  Under a supplement to the Master Trust, certificates
representing  an  ownership  interest in the Master  Trust of up to $130 million
have been issued to Citicorp Securities,  Inc. Debt issued under the Receivables
Facility  has a final  maturity  in 2004 but may be  prepaid  at any  time.  The
interest  rate on such debt is fixed at 8.2% through a long-term  interest  rate
swap.  Pursuant to the  applicable  reserve and  eligibility  requirements,  the
maximum  amount of debt issuable under the  Receivables  Facility as of December
31, 1997 and 1996,  (including $80 million outstanding as of each date) was $107
million and $105  million,  respectively.  Under the  foregoing  agreements  and
related  documentation,  USG Funding is a separate corporate entity with its own
separate  creditors  that will be entitled to be satisfied  out of USG Funding's
assets prior to distribution of any value to its shareholder.

As of December 31, 1997 and 1996, the outstanding balance of receivables sold to
USG Funding and held under the Master Trust was $179  million and $157  million,
respectively,  and debt  outstanding  under  the  Receivables  Facility  was $80
million as of each date. Receivables and debt outstanding in connection with the
Receivables Facility remain in receivables and long-term debt, respectively,  on
the Consolidated Balance Sheet.

Shelf  Registration.  In 1996, the Securities and Exchange  Commission  declared
effective a shelf  registration  statement that allows the  Corporation to offer
from time to time (i) debt  securities  (ii) shares of $1.00 par value preferred
stock (iii)  shares of $0.10 par value  common  stock  and/or  (iv)  warrants to
purchase shares of common stock, all having an aggregate  initial offering price
not to exceed  $300  million.  As of the filing date of the  Corporation's  1997
Annual  Report on Form 10-K,  no  securities  had been  issued  pursuant to this
registration.


4. Debt
<TABLE>
Total debt, including debt maturing within one year, as of
December 31 consisted of the following:
(millions)                                   1997       1996
- ------------------------------------------------------------
<CAPTION>
<S>                                         <C>        <C>
Revolving credit facility due 2002          $  25      $ 110
Receivables Facility due 2003 and 2004         80         80
8% senior notes due 1997                        -         41
9.25% senior notes due 2001                   150        150
8.5% senior notes due 2005                    150        150
8.75% sinking fund debentures due 2017         92        140
Canadian credit facility due 2002              72          -
Canadian credit facility due 1997               -         50
Industrial revenue bonds                       46         40
Other debt                                      5         11
Less unamortized discount                       -        (17)
- -------------------------------------------------------------
Total                                         620        755 
=============================================================
</TABLE>

The Corporation  maintains a $500 million  unsecured  revolving credit facility,
which includes a $125 million letter of credit subfacility,  with a syndicate of
banks under a credit  agreement.  The revolving  credit facility expires in 2002
with no  required  amortization  prior to  maturity.  As of December  31,  1997,
outstanding  revolving  loans totaled $25 million,  and letters of credit issued
and  outstanding  amounted to $84  million,  leaving the  Corporation  with $391
million of available credit under the revolving  credit facility.  The revolving
loans bear interest at the London Interbank Offered Rate ("LIBOR") as determined
from time to time plus an applicable  spread based on the Corporation's net debt
to EBITDA  ratio (as defined in the credit  agreement)  for the  preceding  four
quarters.  As of December 31, 1997, the applicable  spread was 0.4%. The average
rate of interest on the revolving loans was 6.1% and 6.3% during the years ended
December 31, 1997 and 1996, respectively. See "Note 5. Financial Instruments and
Risk  Management"  for  information  on instruments  used by the  Corporation to
manage the impact of interest rate changes on LIBOR-based  bank debt. The credit
agreement contains restrictions on the operation of the Corporation's  business,
including covenants  pertaining to liens, sale and leaseback  transactions,  and
mergers and acquisitions of businesses not related to the building industry.

On June 2, 1997, the Corporation  executed through CGC Inc. a $77 million (U.S.)
($110 million Canadian), parent-guaranteed,  Canadian credit facility due 2002.
This  facility  was later  amended to  increase  the credit  line by $14 million
(U.S.) ($20 million Canadian) for one year. As of December 31, 1997, outstanding
loans totaled $72 million (U.S.), leaving $19 million (U.S.) of available credit
under  this  facility.  The method of  calculating  interest  and the  covenants
related to this facility are  virtually the same as those for the U.S.  facility
described  above.  The average rate of interest on the  Canadian  loans was 4.6%
during the period of June 2, 1997,  through  December 31, 1997. The average rate
of interest on a different  Canadian  credit  facility that was in effect during
the period of January 1, 1997,  through  its  termination  on June 4, 1997,  was
6.2%.

The Corporation also maintains a  parent-guaranteed,  multicurrency ($20 million
U.S.  equivalent),  European line of credit. As of December 31, 1997, there were
no outstanding loans under this facility.

The industrial  revenue bonds had interest rates ranging from 3.7% to 8.8%, with
maturities  through  2032.  All debt  classified  as "other  debt"  had  average
interest rates of 4.5% and 4.6% as of December 31, 1997 and 1996,  respectively,
with varying payments due through 2006.

There  were no  short-term  borrowings  outstanding  as of  December  31,  1997.
Short-term  borrowings  outstanding as of December 31, 1996, totaled $7 million,
and the weighted  average  interest rate on these borrowings as of that date was
4.2%.

The fair  market  value of total  debt  outstanding  was $646  million  and $788
million as of December 31, 1997 and 1996, respectively, based on indicative bond
prices as of those dates.

As of December 31, 1997,  aggregate scheduled  maturities of long-term debt were
$10  million  for each year 1998  through  2000,  $160  million in 2001 and $107
million in 2002.


5. Financial Instruments and Risk Management
<TABLE>

The following  table  presents the carrying  amounts and estimated fair value of
the Corporation's derivative portfolio as of December 31:

(millions)                       1997         1996
- --------------------------------------------------
<CAPTION>
<S>                          <C>          <C>

Interest Rate Contracts:
Notional amount              $   105      $    171
Carrying amount                    -             -
Fair value                       (10)          (10)

Energy Swaps:
Notional amount                   30            39
Carrying amount                    -             -
Fair value                         -             4

Foreign Exchange Contracts:
Notional amount                   22            15
Carrying amount                    -             -
Fair value                         -             -
- --------------------------------------------------
</TABLE>

The amounts  reported as fair value  represent the market value as obtained from
broker  quotations.  The negative  fair values are  estimates of the amounts the
Corporation  would need to pay as of December  31, 1997 and 1996,  to cancel the
contracts or transfer them to other parties.

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

Interest Rate Risk  Management.  As of December 31, 1997, the  Corporation had a
swap  agreement  in place  to pay  7.2% in  exchange  for  LIBOR on $25  million
notional principal for the years 1998 through 2000. In addition, the Corporation
has  entered  into $80  million of interest  rate swap  agreements  to hedge its
Receivables  Facility on which the  interest  payments  are based on  commercial
paper rates.  Under these agreements,  the Corporation pays a fixed rate of 8.2%
in  exchange  for the  monthly  commercial  paper  rate  due on the  Receivables
Facility.

As of December 31, 1996, the Corporation  owned an interest rate cap that capped
the Corporation's expected LIBOR-based interest payments on $25 million notional
principal at 5.6% for 1997. The Corporation also had swap agreements in place to
pay 7.1% in exchange for LIBOR on $50 million  notional  principal for the years
1997 through 2000 and on $25 million notional principal for 2001 and 2002. Also,
as of December 31, 1996, the  Corporation  had interest rate swap  agreements to
hedge $80 million of its Receivables Facility.

Energy Risk  Management.  As of December 31, 1997 and 1996, the  Corporation had
over-the-counter  swap  agreements  to  exchange  monthly  payments  on notional
amounts of energy  amounting to $30 million and $39 million,  respectively,  all
extending one year or less.

Foreign Exchange Risk Management. As of December 31, 1997, the Corporation had a
number of  foreign  currency  forward  contracts  in place  (primarily  Canadian
dollars and Belgian francs) to hedge its exposure to exchange rate  fluctuations
on foreign currency transactions. These foreign exchange contracts mature on the
anticipated cash requirement date of the hedged transaction,  generally,  within
one year.  As of December  31,  1996,  the  Corporation  had a foreign  exchange
forward  contract  in place to hedge  the  refinancing  of the  purchase  of the
minority  interest in CGC. This contract was for $15 million  (U.S.) and matured
in January  1997.  The  deferred  gain on this  foreign  exchange  hedge was not
significant as of December 31, 1996.


6. Purchase of Subsidiary Minority Interest


In the fourth quarter of 1996, the Corporation  purchased the minority  interest
in its  Canadian  subsidiary,  CGC.  The common  shares of  publicly  held stock
totaled  approximately  6 million and were acquired at a price of $11 (Canadian)
per share. The total amount paid in U.S. dollars for the shares was $49 million.
This payment was financed  initially through an interim Canadian credit facility
due 1997 that was replaced in 1997 by a long-term  Canadian  credit facility due
2002.  As a result of the  transaction,  CGC  recorded  goodwill  of $41 million
(U.S.),  which is included in other assets on the Consolidated Balance Sheet and
is being amortized over 40 years.


7. Writedown of Assets

In the fourth  quarter of 1995,  the  Corporation  recorded a $30 million pretax
($24 million  after-tax)  charge in connection  with the sale of its  insulation
manufacturing  business in the United States,  which was completed in the second
quarter of 1996, and the closure of its insulation plant in Canada.  Included in
this  charge  is a  $15  million  noncash,  no-tax-impact  write-off  of  excess
reorganization  value  associated  with these  businesses.  The remainder of the
charge primarily reflects a writedown of the assets of these businesses to their
net realizable value. The total charge is reflected in other expense, net in the
Consolidated Statement of Earnings.


8. Income Taxes
<TABLE>

Earnings before income taxes consisted of the following:

(millions)                1997       1996       1995
- ----------------------------------------------------
<CAPTION>
<S>                   <C>        <C>        <C>
U.S.                  $    301   $    138   $     73
Foreign                     19         (6)        (8)
- -----------------------------------------------------
Total                      320        132         65 
=====================================================
</TABLE>
<TABLE>
Income taxes consisted of the following:
(millions)                1997       1996       1995
- ----------------------------------------------------
<CAPTION>
<S>                   <C>        <C>        <C>
Current:
Federal               $    147   $     90   $     67
Foreign                     10          5         10
State                       26         17         15
- ----------------------------------------------------
                           183        112         92
- ----------------------------------------------------
Deferred:
Federal                    (12)         3          7
Foreign                      2          1         (2)
State                       (1)         1          -
- ----------------------------------------------------
                           (11)         5          5
- ----------------------------------------------------
Total                      172        117         97
====================================================
</TABLE>
<TABLE>

Differences between actual provisions for income taxes and provisions for income
taxes at the U.S. federal statutory rate (35%) were as follows:


(millions)                    1997       1996       1995
- --------------------------------------------------------
<CAPTION>
<S>                         <C>      <C>        <C>
Taxes on income at
   federal statutory rate   $  112   $    46    $    23
Excess reorganization
   value amortization           44        59         64
Foreign earnings subject
   to different tax rates        2         2          2
State income tax, net of
   federal benefit              16        12         10
Percentage depletion            (3)       (3)        (3)
Other, net                       1         1          1
- --------------------------------------------------------
Provision for income
   taxes                       172       117         97
========================================================

Effective income tax rate     53.9%     88.9%     149.0%
========================================================
</TABLE>
<PAGE>
<TABLE>
Significant  components of deferred tax (assets)  liabilities  as of December 31
were as follows:

(millions)                           1997       1996
- ----------------------------------------------------
<CAPTION>
<S>                              <C>        <C>
Property, plant and equipment    $    155   $    171
Debt discount                           -          7
- ----------------------------------------------------
Deferred tax liabilities              155        178
- ----------------------------------------------------

Pension and postretirement benefits   (78)       (97)
Reserves not deductible until paid   (126)      (106)
Other                                   2          1
- ----------------------------------------------------
Deferred tax assets before
   valuation allowance               (202)      (202)
Valuation allowance                     -         90
- ----------------------------------------------------
Deferred tax assets                  (202)      (112)
- -----------------------------------------------------
Net deferred tax (assets) liabilities (47)        66
=====================================================
</TABLE>

A valuation  allowance of $90 million,  which had been provided for deferred tax
assets  relating  to  pension  and  retiree   medical   benefits  prior  to  the
Corporation's  financial  restructuring  in 1993,  was  eliminated  in the third
quarter  of 1997.  The  elimination  of this  allowance  reflects  a  change  in
management's  judgment  regarding  the  realizability  of these assets in future
years as a result of the  Corporation's  pretax  earnings  levels  and  improved
capital  structure over the past three years.  In accordance  with SOP 90-7, the
benefit  realized from the  elimination of this allowance was used to reduce the
balance of excess reorganization value to zero in the third quarter of 1997.

The Corporation used a net operating loss carryforward of $100 million to offset
U.S. taxable income in 1994 through 1996.  Because of the uncertainty  regarding
the application of the Internal Revenue Code to this carryforward as a result of
the  Corporation's  financial  restructuring in 1993, the carryforward  could be
reduced or eliminated.

The  Corporation  does not  provide  for U.S.  income  taxes on the  portion  of
undistributed   earnings  of  foreign  subsidiaries  that  are  intended  to  be
permanently  reinvested.  The cumulative amount of such  undistributed  earnings
totaled approximately $144 million as of December 31, 1997. These earnings would
become  taxable  in the  United  States  upon the sale or  liquidation  of these
foreign subsidiaries or upon the remittance of dividends.  It is not practicable
to estimate the amount of the deferred tax liability on such earnings.


9. Inventories

     As of December 31, 1997 and 1996,  the LIFO values of domestic  inventories
were $153 million and $141 million,  respectively, and would have been higher by
$4 million and $7 million,  respectively, if they were valued under the FIFO and
average  production cost methods.  The LIFO value of U.S.  domestic  inventories
exceeded that computed for U.S. federal income tax purposes by $30 million as of
December 31, 1997 and 1996. Inventory  classifications as of December 31 were as
follows:
<TABLE>
(millions)                              1997        1996
- --------------------------------------------------------
<CAPTION>
<S>                                   <C>      <C>
Finished goods and work in progress   $  132   $     118
Raw materials                             65          58
Supplies                                  11           9
- --------------------------------------------------------
Total                                    208         185
========================================================
</TABLE>


10. Property, Plant and Equipment
<TABLE>
Property, plant and equipment classifications as of
December 31 were as follows:
(millions)                              1997       1996
- -------------------------------------------------------
<CAPTION>
<S>                                 <C>        <C>
Land and mineral deposits           $     61   $     58
Buildings and realty improvements        262        248
Machinery and equipment                  895        758
- -------------------------------------------------------
                                       1,218      1,064
Reserves for depreciation and
   depletion                            (236)      (177)
- -------------------------------------------------------
Total                                    982        887
=======================================================
</TABLE>


11. Leases

The  Corporation  leases  certain  of  its  offices,  buildings,  machinery  and
equipment,  and autos under  noncancelable  operating leases.  These leases have
various terms and renewal options.  Lease expense  amounted to $51 million,  $46
million and $41 million in the years ended  December  31,  1997,  1996 and 1995,
respectively. Future minimum lease payments required under operating leases with
initial or  remaining  noncancelable  terms in excess of one year as of December
31, 1997,  were $36 million in 1998,  $31 million in 1999,  $26 million in 2000,
$20 million in 2001 and $18 million in 2002. The aggregate obligation subsequent
to 2002 was $19 million.


12. Employee Retirement Plans

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 final years of
employment.  The  Corporation's   contributions  are  made  in  accordance  with
independent  actuarial reports. The Corporation made fundings of $25 million and
$13 million in 1997 and 1996,  respectively,  to one of its plans.  Pension plan
assets consist  primarily of publicly traded common stocks and debt  securities.
Net pension expense included the following components:
<TABLE>

(millions)                           1997       1996       1995
- ---------------------------------------------------------------
<CAPTION>
<S>                             <C>        <C>        <C>
Service cost-benefits
  earned during the period      $     12   $     12   $      9
Interest cost on projected
  benefit obligation                  36         35         35
Actual return on plan assets         (96)       (62)       (72)
Net amortization                      57         27         38
- --------------------------------------------------------------
Net pension expense                    9         12         10
==============================================================
</TABLE>

<TABLE>

The  following  table  presents a  reconciliation  of the  funded  status of the
pension plans as of December 31:

(millions)                                       1997        1996
- -----------------------------------------------------------------
<CAPTION>
<S>                                           <C>        <C>

Amount of assets available for benefits:
Funded assets of the plans at fair
   market value                               $    554   $    464
Accrued pension expense                             13         26
- ------------------------------------------------------------------
Total assets of the plans                          567        490
- ------------------------------------------------------------------
Present value of estimated pension
   obligation:
Vested benefits                                    369        349
Nonvested benefits                                  33         32
- ------------------------------------------------------------------
Accumulated benefit obligation                     402        381
Additional benefits based on
   projected future salary increases               126        111
- ------------------------------------------------------------------
Projected benefit obligation                       528        492
- ------------------------------------------------------------------
Plan assets in excess of (less than)
   projected benefit obligation                     39         (2)
==================================================================
</TABLE>

The expected  long-term rate of return on plan assets was 9% for the years ended
December 31, 1997 and 1996. The assumed  weighted  average discount rate used in
determining the accumulated benefit obligation was 7.25% and 7.5% as of December
31, 1997 and 1996,  respectively.  The rate of  increases  in  projected  future
compensation levels was 5% for both years.

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:
<TABLE>
(millions)                       1997     1996      1995
- --------------------------------------------------------
<CAPTION>
<S>                            <C>      <C>      <C>
Service cost of benefits
   earned                      $   6    $   6    $    4
Interest on accumulated
   postretirement benefit
   obligation                     15       16        13
Net amortization (deferral)        -        -        (1)
- --------------------------------------------------------
Net periodic postretirement
   benefit cost                   21       22        16
========================================================
</TABLE>

The  status  of the  Corporation's  accrued  postretirement  benefit  obligation
recognized on the Consolidated Balance Sheet as of December 31 was as follows:
<TABLE>
(millions)                                 1997       1996
- -----------------------------------------------------------
<CAPTION>
<S>                                    <C>        <C>
Accumulated postretirement benefit
obligation:
Retirees                               $    123   $    119
Fully eligible active participants           14         17
Other active participants                    82         86
- -----------------------------------------------------------
                                            219        222
Unrecognized net gain (loss)                  9         (7)
- -----------------------------------------------------------
Accrued postretirement benefit
   obligation                               228        215
===========================================================
</TABLE>

The  assumed  health-care-cost  trend  rate used in  measuring  the  accumulated
postretirement  benefit  obligation was 8% as of December 31, 1997, and 9% as of
December 31, 1996,  with a rate gradually  declining to 5% by 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 by $31 million and $33 million as of December
31,  1997  and  1996,   respectively,   and  would  increase  the  net  periodic
postretirement  benefit  cost by $3 million  and $4 million  for the years ended
December  31, 1997 and 1996,  respectively.  The assumed  discount  rate used in
determining the accumulated postretirement benefit obligation was 7.25% and 7.5%
as of December 31, 1997 and 1996, respectively.

13. Stock-Based Compensation

The Corporation has issued stock options from three  successive  plans under its
long-term  equity program.  Under each of the plans,  options were granted at an
exercise  price  equal to the  market  value on the date of grant.  All  options
granted  under the plans have 10-year terms and vesting  schedules  ranging from
two to three years.  The options  expire on the 10th  anniversary of the date of
the 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.

The  Corporation  accounts  for  stock-based  compensation  in  accordance  with
Accounting Principles Board Opinion No. 25 and discloses such compensation under
the provisions of SFAS No. 123, "Accounting for Stock-Based Compensation."

The fair value of each option grant was  estimated as of the date of grant using
the  Black-Scholes  option  pricing  model with the following  weighted  average
assumptions  for options  granted in 1997 and 1996;  no options  were granted in
1995: <TABLE>
                                    1997       1996
- ---------------------------------------------------
<CAPTION>
<S>                                <C>        <C>
Expected lives (years)              7.4        7.4
Risk-free interest rate             6.8%       5.9%
Expected volatility                29.6%      33.0%
Dividend yield                        -          -
- ---------------------------------------------------
</TABLE>

The  weighted  average  fair value of  options  granted  during the years  ended
December 31, 1997 and 1996, was $15.61 and $14.17, respectively.

If the  Corporation had elected to recognize  compensation  cost for stock-based
compensation  grants  consistent with the method prescribed by SFAS No. 123, net
earnings  and net earnings per common share for 1997 and 1996 would have changed
to the following pro forma amounts:
<TABLE>

(millions, except per share amounts)  1997       1996
- -----------------------------------------------------
<CAPTION>
<S>                   <C>              <C>       <C>

Net earnings:         As reported    $ 148       $ 15
                      Pro forma        144         13

Basic EPS:            As reported     3.19       0.32
                      Pro forma       3.12       0.29

Diluted EPS:          As reported     3.03       0.31
                      Pro forma       2.96       0.28
- -----------------------------------------------------
</TABLE>
<TABLE>
Stock option activity was as follows:

(options in thousands)                1997     1996     1995
- ------------------------------------------------------------
<CAPTION>
<S>                                  <C>      <C>      <C>
Options:
Outstanding, January 1               2,565    2,560    2,765
Granted                                378      359        -
Exercised                             (882)    (343)    (173)
Canceled                               (12)     (11)     (32)
- -------------------------------------------------------------
Outstanding, December 31             2,049    2,565    2,560
Exercisable, December 31             1,339    1,889    1,369
Available for grant, December 31     1,671      467      929

Weighted average exercise price:
Outstanding, January 1            $  21.71 $  19.19 $  18.78
Granted                              34.60    29.40        -
Exercised                            18.20    10.75    10.88
Canceled                             32.00    28.29    28.33
Outstanding, December 31             25.54    21.71    19.19
Exercisable, December 31             22.06    18.82    16.31
- ------------------------------------------------------------
</TABLE>

The following table summarizes information about stock options outstanding as of
December 31, 1997:
<TABLE>

           Options Outstanding           Options Exercisable
           -------------------           -------------------
                                Weighted
                     Weighted   Average              Weighted
Range of             Average   Remaining              Average
Exercise   Options  Exercise   Contractual  Options  Exercise
 Prices     (000)     Price    Life (yrs.)   (000)     Price
 -----------------------------------------------------------
<CAPTION>
<S>         <C>       <C>         <C>         <C>     <C>
$  5 - 15     545     $  10       5.4         545     $  10
  15 - 25     181        22       6.6         181        22
  25 - 35   1,323        32       7.4         613        33
- ------------------------------------------------------------
 Total      2,049                           1,339
============================================================
</TABLE>
<PAGE>
14. Stockholders' Equity
<TABLE>
Changes in stockholders' equity as of December 31 are
summarized as follows:
(millions)                 1997       1996       1995
- -----------------------------------------------------
<CAPTION>
<S>                   <C>        <C>        <C>
Common Stock:
Beginning balance     $      5   $      5   $      5
Ending balance               5          5          5
- ----------------------------------------------------

Capital Received in Excess
of Par Value:
Beginning balance          231        223        221
Issuances of common stock   18          4          2
Other, net                   9          4          -
- ----------------------------------------------------
Ending balance             258        231        223
- ----------------------------------------------------

Deferred Currency
Translation:
Beginning balance          (10)        (6)       (13)
Change during the
   period                  (15)        (4)         7
- -----------------------------------------------------
Ending balance             (25)       (10)        (6)
- -----------------------------------------------------

Reinvested Earnings (Deficit):
Beginning balance         (249)      (259)      (221)
Net earnings (loss)        148         15        (32)
Other, net                  10         (5)        (6)
- -----------------------------------------------------
Ending balance             (91)      (249)      (259)
- -----------------------------------------------------

Total stockholders' equity
(deficit)                  147        (23)       (37)
===================================================== 
</TABLE>

There  were  48,919 and 31,488  shares of $0.10 par value  common  stock held in
treasury  as of  December  31, 1997 and 1996,  respectively.  These  shares were
acquired  through the forfeiture of restricted stock and the surrender of shares
in settlement of tax withholding obligations.

Warrants.  As of December 31, 1997 and 1996,  outstanding  warrants  amounted to
2,489,898 and 2,591,091,  respectively. The warrants are exercisable, subject to
applicable securities laws, at any time prior to May 6, 1998, at which time they
expire.  Each share of common stock issued upon  exercise of a warrant  prior to
the distribution  date (as defined in the Rights Agreement  described below) 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.

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,  in addition to common
stock,  were issued to holders of certain  debt that was  converted to equity in
the financial restructuring implemented on that date. 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.

Stockholder Rights Plan. On May 6, 1993, a rights plan (the "Rights  Agreement")
was adopted  pursuant to which the  Corporation  declared a distribution  of one
right (the  "Rights")  upon each share of common  stock.  The Rights,  which are
intended  to protect the  Corporation  and its  stockholders  in the event of an
unsolicited attempt to acquire the Corporation,  generally become exercisable 10
days  following  the  announcement  of the  acquisition  of 20% or  more  of the
outstanding  common stock by someone  other than the  Corporation  or one of its
employee benefit plans (10% in the case of an acquisition that the Corporation's
Board of Directors  determines to represent a threat of  acquisition  not in the
best  interests of the  Corporation's  stockholders)  or 10 business  days after
commencement of a tender offer for 30% or more of the outstanding  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 per  one-hundredth  of a preferred
share, subject to adjustment.  The Rights also provide for a so-called "flip-in"
feature and an exchange feature.

In the event that the  Corporation is the surviving  corporation  and its common
stock  remains   outstanding  and  unchanged  in  a  merger  or  other  business
combination with such acquiring party or the acquiring party engages in one of a
number of self-dealing transactions specified in the Rights Agreement, or in the
event that there is a 10% acquisition that the Board of Directors  determines to
represent a threat of acquisition not in the best interests of the Corporation's
stockholders,  each  holder of a Right,  other than the  acquiring  party,  will
thereafter  have the right,  subject to the  exchange  feature,  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.


15. Industry and Geographic Segments

Transactions  between  industry and  geographic  segments are  accounted  for at
transfer  prices  that are  approximately  equal to market  value.  Intercompany
transfers   between   industry  and   geographic   segments  are  not  material.
Eliminations  reflect  intercompany sales between industry  segments.  No single
customer  accounted for 10% or more of consolidated  net sales.  Export sales to
foreign  unaffiliated  customers  represent  less than 10% of  consolidated  net
sales.  Segment operating profit (loss) includes all costs and expenses directly
related to the segment  involved and an allocation of expenses that benefit more
than one segment.  Segment  operating  profit  (loss) also  includes the noncash
amortization of excess  reorganization  value,  which had the impact of reducing
operating profit and identifiable assets for North American Gypsum and Worldwide
Ceilings.

Corporate identifiable assets include the assets of USG Funding, which represent
the  outstanding  balances of  receivables  purchased  from U.S.  Gypsum and USG
Interiors,  net of  reserves.  As of  December  31,  1997,  1996 and 1995,  such
receivables,  net of reserves,  amounted to $128 million,  $121 million and $110
million,  respectively,  including  $95  million,  $89  million  and $78 million
purchased  from  U.S.  Gypsum  and $33  million,  $32  million  and $32  million
purchased from USG Interiors as of the respective dates.


                                                  USG CORPORATION
<TABLE>
Industry Segments
                                                    North
                                                  American     Worldwide
(millions)                                         Gypsum      Ceilings    Corporate   Eliminations    Total
- ------------------------------------------------------------------------------------------------------------
<CAPTION>
<S>                                              <C>          <C>          <C>          <C>          <C>

1997
- ----
Net sales...................................     $  2,338     $    634     $      -     $    (98)    $  2,874
Amortization of excess reorganization value.           62           65            -            -          127
Operating profit (loss).....................          429           (1)         (49)           -          379
Depreciation, depletion and amortization....           48           17            5            -           70
Capital expenditures........................          126           45            1            -          172
Identifiable assets.........................        1,247          398          289           (8)       1,926

1996
- ----
Net sales...................................        2,067          612            -          (89)       2,590
Amortization of excess reorganization value.           82           87            -            -          169
Operating profit (loss).....................          291          (44)         (39)           -          208
Depreciation, depletion and amortization....           44           15            6            -           65
Capital expenditures........................           63           56            1            -          120
Identifiable assets.........................        1,161          478          230           (5)       1,864

1995
- ----
Net sales...................................        1,924          609            -          (89)       2,444
Amortization of excess reorganization value.           82           87            -            -          169
Operating profit (loss).....................          262          (34)         (38)           -          190
Depreciation, depletion and amortization....           42           14           11            -           67
Capital expenditures........................           96           49            2            -          147
Identifiable assets.........................        1,157          531          243           (4)       1,927
</TABLE>
<PAGE>


Geographic Segments
<TABLE>
                                                                                          Transfers
                                                                                           Between
                                                   United                      Other     Geographic
(millions)                                         States       Canada        Foreign       Areas        Total
- --------------------------------------------------------------------------------------------------------------
<CAPTION>
<S>                                              <C>          <C>          <C>          <C>          <C>
1997
- ----
Net sales...................................     $  2,570     $    184     $    251     $   (131)    $  2,874
Amortization of excess reorganization value.          101           14           12            -          127
Operating profit............................          356            9           14            -          379
Depreciation, depletion and amortization....           57            8            5            -           70
Capital expenditures........................          136           30            6            -          172
Identifiable assets.........................        1,610          178          138            -        1,926

1996
- ----
Net sales...................................        2,319          169          242         (140)       2,590
Amortization of excess reorganization value.          135           18           16            -          169
Operating profit (loss).....................          209            1           (2)           -          208
Depreciation, depletion and amortization....           53            6            6            -           65
Capital expenditures........................          102           13            5            -          120
Identifiable assets.........................        1,518          177          169            -        1,864

1995
- ----
Net sales...................................        2,161          155          246         (118)       2,444
Amortization of excess reorganization value.          135           18           16            -          169
Operating profit (loss).....................          191           (3)           2            -          190
Depreciation, depletion and amortization....           56            6            5            -           67
Capital expenditures........................          123           19            5            -          147
Identifiable assets.........................        1,594          146          187            -        1,927
</TABLE>
<PAGE>

16. Litigation

Asbestos   and  Related   Insurance   Litigation.   One  of  the   Corporation's
subsidiaries,  U.S. Gypsum,  is among many defendants in lawsuits arising out of
the  manufacture  and sale of  asbestos-containing  materials.  U.S. Gypsum sold
certain asbestos-containing  products beginning in the 1930s; in most cases, the
products were discontinued or asbestos was removed from the 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  the  maintenance  or  removal  and  replacement  of  asbestos-
containing  products in buildings (the  "Property  Damage  Cases").  Others seek
compensatory  and in many cases punitive  damages for personal injury  allegedly
resulting from exposure to  asbestos-containing  products (the "Personal  Injury
Cases").

Property  Damage Cases.  U.S. Gypsum is a defendant in 16 Property Damage Cases,
many of which involve  multiple  buildings.  One of the cases is a conditionally
certified class action  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.). Another class action, brought on behalf of various
public  entities  in the  state of  Texas,  was  settled  in  August  1997.  The
settlement  amount  will be paid over the next 12 months  and will be  partially
funded  by  insurance.  Sixteen  additional  property  damage  claims  have been
threatened against U.S. Gypsum.

Results to Date: In total,  U.S. Gypsum has settled  approximately  110 Property
Damage  Cases  involving  240  plaintiffs,  in  addition  to four  class  action
settlements.  Twenty-four cases have been tried to verdict, 16 of which were won
by U.S. Gypsum and five lost;  three other cases, one won at the trial level and
two lost, were settled during appeals.  In the cases lost,  compensatory  damage
awards against U.S. Gypsum have totaled $11.5 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, and two were settled
during the appellate process.

In 1997,  one Property  Damage Case was filed against U.S.  Gypsum,  three cases
were dismissed before trial, six were settled, one closed case was reopened, and
16 were pending at year end. U.S.  Gypsum  expended $7.8 million for the defense
and resolution of Property Damage Cases and received insurance payments of $15.5
million in 1997.  During 1996, two Property Damage Cases were filed against U.S.
Gypsum, three cases were dismissed before trial, eight were settled, and 23 were
pending at year end;  U.S.  Gypsum  expended  $33.4  million for the defense and
resolution of Property Damage Cases in 1996 and received  insurance  payments of
$84  million.  In 1995,  three  Property  Damage  Cases were filed  against U.S.
Gypsum,  seven cases were dismissed before trial,  three were settled,  two were
closed  following trial or appeal,  and 32 were pending at year end. U.S. Gypsum
expended $36 million for the defense and resolution of Property Damage Cases and
received insurance  payments of $48.6 million in 1995. A substantial  portion of
the insurance  payments  received during the years 1995 through 1997 constituted
reimbursement  for amounts  expended in connection with Property Damage Cases in
prior years.

U. S. Gypsum's  estimated  cost of resolving  pending  Property  Damage Cases is
discussed below. (See "Estimated Cost.")

Personal Injury Cases.  U.S. Gypsum is also a defendant in approximately  67,000
Personal  Injury Cases  pending at December 31, 1997,  as well as an  additional
approximately  7,000 cases that have been  settled but will be closed over time.
Filings of new Personal  Injury Cases totaled  23,500  claims in 1997,  compared
with  28,000  new  claims in 1996 and  14,000  in 1995.  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 does not
anticipate that the average  settlement  cost for currently  pending claims will
vary  significantly  from historical  amounts,  due largely to opportunities for
block  settlements of large numbers of claims and the apparently high percentage
of  asbestos  personal  injury  claims  that  appear  to have  been  brought  by
individuals  with  little or no physical  impairment.  However,  other  factors,
including the possible insolvency of co-defendants, could have an adverse impact
on settlement costs.

U.S.  Gypsum  is  a  member,   together  with  19  other  former   producers  of
asbestos-containing   products,   of  the  Center  for  Claims  Resolution  (the
"Center"),  which has assumed the handling of all Personal  Injury Cases pending
against U.S.  Gypsum and the other  members of the Center.  Costs of defense and
settlement are shared among the members of the Center pursuant to  predetermined
sharing  formulae.  Virtually all of U.S. Gypsum's personal injury liability and
defense costs are paid by those of its insurance carriers that in 1985 signed an
Agreement  Concerning  Asbestos-Related  Claims  (the  "Wellington  Agreement"),
obligating them to provide coverage for the defense and indemnity costs incurred
by U.S.  Gypsum in  Personal  Injury  Cases.  Punitive  damages  have never been
awarded  against U.S.  Gypsum in a Personal  Injury Case;  whether such an award
would be covered by insurance  under the  Wellington  Agreement  would depend on
state law and the terms of the individual policies.

U. S. Gypsum and the Center were parties to a class action  settlement  known as
"Georgine"  that would have  required  most future  Personal  Injury Cases to be
resolved  through an  administrative  system and provided  prescribed  levels of
benefits based on the nature of the claimants' physical impairment.  However, on
June 25,  1997,  the  Supreme  Court  affirmed  a May 1996  ruling  by a federal
appellate  court  finding  that class  certification  in Georgine  was  improper
(Amchem Products,  Inc. v. Windsor, Case No. 96-270).  Since the invalidation of
the Georgine  settlement,  U.S.  Gypsum and the other  Center  members have been
named  in  a  substantial  number  of  additional  Personal  Injury  Cases.  The
defendants in Georgine,  including U.S.  Gypsum,  have stated their intention to
pursue another claims-handling vehicle that would serve as an alternative to the
tort system,  although there can be no assurance that such an alternative can be
found and implemented.

During 1997,  approximately 23,500 Personal Injury Cases were filed against U.S.
Gypsum, approximately 5,000 claims were refiled or amended to add U.S. Gypsum as
a defendant,  and  approximately  14,000 were settled or dismissed.  U.S. Gypsum
incurred  expenses  of $31.6  million in 1997 with  respect to  Personal  Injury
Cases,  of  which  $27.2  million  is  being  paid by  insurance.  During  1996,
approximately  28,000 Personal Injury Cases were filed against U.S. Gypsum,  and
approximately 20,000 were settled or dismissed. U.S. Gypsum incurred expenses of
$28.6  million in 1996 with  respect to Personal  Injury  Cases,  of which $21.6
million was paid by insurance. (The reduction in the portion of the cost paid by
insurance  in  1996  was   attributable   to  the  impact  of  certain   insurer
insolvencies.)  During 1995,  approximately  13,000  Personal  Injury Cases were
filed against U.S.  Gypsum,  and 17,600 were settled or dismissed.  U.S.  Gypsum
incurred  expenses  of $32.1  million in 1995 with  respect to  Personal  Injury
Cases,  of which $30.9 million was paid by  insurance.  As of December 31, 1997,
1996 and 1995,  approximately  74,000,  59,600 and 50,000 Personal Injury Cases,
respectively, were pending against U.S. Gypsum.

U. S. Gypsum's  estimated cost of resolving the pending Personal Injury Cases is
discussed below. (See "Estimated Cost.")

Insurance  Coverage Action.  U.S. Gypsum sued its insurance  carriers in 1983 to
obtain  coverage for asbestos cases (the "Coverage  Action") and has settled all
disputes  with 12 of its 17 solvent  carriers.  As of December 31,  1997,  after
deducting insolvent coverage and insurance paid out to date,  approximately $325
million of potential insurance remained, including approximately $140 million of
insurance  from five carriers that have agreed,  subject to certain  limitations
and conditions,  to cover both property  damage and personal injury costs;  $140
million from two carriers that have agreed,  subject to certain  limitations and
conditions,   to  cover  personal  injury  but  not  yet  property  damage;  and
approximately  $45 million from three carriers that have not yet agreed to cover
either.  U.S.  Gypsum is  attempting  to negotiate a resolution  of the Coverage
Action  with  the five  remaining  defendant  carriers  but may be  required  to
litigate additional issues in its effort to secure the contested coverage.

During 1995 and 1996, following an Illinois Appellate Court ruling awarding U.S.
Gypsum  coverage for Property  Damage Cases,  several  carriers paid U.S. Gypsum
approximately  $133 million as  reimbursement  for past  property  damage costs.
These amounts were added to U.S.  Gypsum's reserve for asbestos costs (discussed
below).

Aggregate  insurance  payments exceeded U.S. Gypsum's total expenditures for all
asbestos-related matters,  including property damage, personal injury, insurance
coverage litigation and related expenses,  by $2.3 million for 1997, $41 million
in 1996 and $10 million in 1995, due primarily to nonrecurring reimbursement for
amounts expended in prior years.

Insolvent Carriers:  Four of U.S. Gypsum's domestic insurance carriers,  as well
as  underwriters  of  portions  of various  policies  issued by Lloyds and other
London  market  companies,  providing a total of  approximately  $106 million of
coverage, are insolvent. Because these policies would already have been consumed
by U.S. Gypsum's asbestos expenses to date if the carriers had been solvent, the
insolvencies  will not  adversely  affect  U.S.  Gypsum's  coverage  for  future
asbestos-related   costs.   However,   U.S.   Gypsum  is  pursuing   claims  for
reimbursement  from the  insolvent  estates  and other  sources  and  expects to
recover a  presently  indeterminable  portion of the policy  amounts  from these
sources. In February 1997, U.S. Gypsum was paid approximately $11 million by the
receiver for one of the insolvent carriers.

Estimated Cost. The asbestos  litigation  involves numerous  uncertainties  that
affect U.S. Gypsum's ability to estimate reliably its probable  liability in the
Personal Injury and Property  Damage Cases.  In the Property Damage Cases,  such
uncertainties  include  the  identification  and  volume of  asbestos-containing
products in the buildings at issue in each case,  which is often  disputed;  the
claimed damages associated  therewith;  the viability of statute of limitations,
product identification and other defenses, which varies depending upon the facts
and  jurisdiction of each case; the amount for which such cases can be resolved,
which has normally (but not uniformly) been substantially lower than the claimed
damages;  and the  viability  of claims for punitive and other forms of multiple
damages.  Uncertainties  in  the  Personal  Injury  Cases  include  the  number,
characteristics  and venue of Personal  Injury Cases that are filed against U.S.
Gypsum;  the Center's ability to continue to negotiate  pretrial  settlements at
historical or acceptable levels; the level of physical  impairment of claimants;
the  viability  of claims for  punitive  damages;  and the  Center's  ability to
develop an  alternate  claims-handling  vehicle that retains the key benefits of
Georgine. As a result, any estimate of U.S. Gypsum's liability, while based upon
the best information  currently available,  may not be an accurate prediction of
actual  costs and is subject  to  revision  as  additional  information  becomes
available and developments occur.

Currently Pending Cases: Subject to the above uncertainties and based in part on
information  provided by the Center,  U.S. Gypsum  estimates that it is probable
that currently pending Property Damage and Personal Injury Cases can be resolved
for an amount totaling between $200 million and $265 million,  including defense
costs.  These  amounts are  expected to be expended  over the next three to five
years.  Significant  insurance funding is available for these costs, as detailed
below.

Future Cases: U.S. Gypsum is unable to reasonably estimate the cost of resolving
Property  Damage  Cases  and  Personal  Injury  Cases  that will be filed in the
future. The company  anticipates that few additional  Property Damage Cases will
be filed, as a result of the operation of statutes of limitations and the impact
of certain other factors,  although it is possible that any cases that are filed
may seek substantial  damages. It is anticipated that Personal Injury Cases will
continue to be filed in substantial numbers for the foreseeable future, although
the  percentage  of such cases  filed by  claimants  with  little or no physical
impairment  is expected to remain  high.  However,  the company does not believe
that the number and severity of future cases can be  predicted  with  sufficient
accuracy to provide the basis for a reasonable  estimate of the  liability  that
will be associated with such cases.

Accounting  for Asbestos  Liability:  As of December 31, 1997,  U.S.  Gypsum had
reserved $200 million for liability  from pending  Property  Damage and Personal
Injury Cases  (equaling the lower end of the estimated  range of costs  provided
above).  U.S. Gypsum had a corresponding  receivable from insurance  carriers of
approximately $160 million, the estimated portion of the reserved amount that is
expected to be paid or reimbursed by committed insurance. Additional amounts may
be  reimbursed  by  insurance  depending  upon the  outcome  of  litigation  and
negotiations relating to insurance that is presently disputed.

U.S.  Gypsum had an additional  reserve of $110 million as of December 31, 1997,
that  was  available  for  future  asbestos   liabilities  and  asbestos-related
expenses.  The company  continues  to accrue $18  million per year for  asbestos
costs, and will periodically compare its estimates of liability to then-existing
reserves and available  insurance assets and adjust its reserves as appropriate.
It is possible  that U.S.  Gypsum will  determine in the future that  additional
charges to results of operations  are  necessary,  although  whether  additional
charges  will be  required  and,  if so, the timing and amount of such  charges,
cannot presently be predicted.

Conclusion.  The above estimates and reserves will be re-evaluated  periodically
as additional  information  becomes  available.  It is possible that  additional
charges to earnings  may be  necessary  in the future if the  amounts  reflected
above prove  insufficient  in light of future  events,  and that any such charge
could be material to results of  operations  in the period in which it is taken.
However,  it is  management's  opinion,  taking  into  account  all of the above
information  and  uncertainties,   including  currently  available   information
concerning U.S. Gypsum's liabilities,  reserves and probable insurance coverage,
that the  asbestos  litigation  will not have a material  adverse  effect on the
liquidity or 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 most of these sites, the
involvement of the  Corporation or its  subsidiaries  is expected to be minimal.
The Corporation believes that appropriate reserves have been established for its
potential  liability in connection with all Superfund sites but is continuing to
review its accruals as additional  information becomes available.  Such reserves
take into  account all known or  estimated  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.
<PAGE>
                              REPORT OF MANAGEMENT

     Management of USG Corporation is responsible for the preparation, integrity
and fair presentation of the financial  information included in this report. The
financial  statements have been prepared in accordance  with generally  accepted
accounting  principles and necessarily include certain amounts that are based on
management's estimates and judgment.
     Management is responsible for  maintaining a system of internal  accounting
controls to provide reasonable  assurance as to the integrity and reliability of
the financial  statements,  the proper  safeguarding and use of assets,  and the
accurate  execution  and recording of  transactions.  Such controls are based on
established  policies and procedures and are  implemented by trained  personnel.
The system of internal  accounting  controls is monitored  by the  Corporation's
internal   auditors  to  confirm  that  the  system  is  proper  and   operating
effectively.  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 Corporation's financial statements have been audited by Arthur Andersen
LLP,  independent  public  accountants.  Their audit was conducted in accordance
with generally  accepted  auditing  standards and included  consideration of the
Corporation's  internal control system.  Management has made available to Arthur
Andersen LLP all the  Corporation's  financial records and related data, as well
as minutes of the meetings of the Board of Directors.  Management  believes that
all representations made to Arthur Andersen LLP were valid and appropriate.
     The Board of  Directors,  operating  through its Audit  Committee  composed
entirely of nonemployee directors, provides oversight to the financial reporting
process.  The Audit Committee meets  periodically with management,  the internal
auditors and Arthur Andersen LLP,  jointly and separately,  to review  financial
reporting matters, internal accounting controls and audit results to assure that
all parties are properly fulfilling their responsibilities. Both Arthur Andersen
LLP and the internal auditors have unrestricted access to the Audit Committee.

William C. Foote
Chairman and Chief Executive Officer

Richard H. Fleming
Senior Vice President and Chief Financial Officer

Raymond T. Belz
Vice President and Controller

                          REPORT OF INDEPENDENT PUBLIC
                                   ACCOUNTANTS


To the Stockholders and Board of Directors of USG Corporation:
     We  have  audited  the  accompanying  consolidated  balance  sheets  of USG
Corporation  and  subsidiaries as of December 31, 1997 and 1996, and the related
consolidated  statements of earnings and cash flows for the years ended December
31, 1997, 1996 and 1995. 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.
     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,  1997  and  1996,  and the  results  of their
operations and their cash flows for the years ended December 31, 1997,  1996 and
1995, in conformity with generally accepted accounting principles.




/s/ Arthur Andersen LLP
- -----------------------
ARTHUR ANDERSEN LLP
Chicago, Illinois

January 22 , 1998
<PAGE>
<TABLE>
                                                  USG CORPORATION
                                   SELECTED QUARTERLY FINANCIAL DATA (unaudited)
                                         (millions, except per share data)


                                     First           Second             Third            Fourth            Total
                                    Quarter          Quarter           Quarter           Quarter           Year
                                    -------          -------           -------           -------           ----
<CAPTION>
<S>                              <C>               <C>               <C>              <C>               <C>
     1997
     ----
     Net sales.................  $      673        $      723        $      757       $      721        $    2,874
     Gross profit..............         177               202               210              198               787
     Operating profit (a)......          69                88                97              125               379
     Net earnings (a)..........          15                27                34               72               148
     Per common share:
       Net earnings (b) - basic        0.33              0.57              0.74             1.53              3.19
                        - diluted      0.32              0.55              0.70             1.45              3.03
       Price range  (c) - high       38.750            38.625            48.000           51.500            51.500
                        - low        30.000            29.875            35.750           41.375            29.875
     EBITDA....................         127               147               156              142               572


     1996
     ----
     Net sales.................         602               642               678              668             2,590
     Gross profit..............         131               160               179              175               645
     Operating profit (a)......          22                53                67               66               208
     Net earnings (loss) (a)...         (15)                4                13               13                15
     Per common share:
     Net earnings (loss)(b)- basic    (0.32)             0.09              0.27             0.28              0.32
                           - diluted  (0.32)             0.09              0.26             0.26              0.31
       Price range (c)     - high    30.500            29.000            29.875           34.500            34.500
                           - low     24.000            24.000            25.750           28.125            24.000
     EBITDA....................          79               110               125              123               437
</TABLE>


(a)  The noncash amortization of excess  reorganization  value, which had no tax
     impact,  reduced  operating  profit and net earnings by  approximately  $42
     million in each  quarter  during  1996 and in the  first,  second and third
     quarters of 1997.  Excess  reorganization  value,  which was established in
     connection  with a financial  restructuring  in 1993,  was  scheduled to be
     amortized  through April 1998.  However,  in the third quarter of 1997, the
     remaining  balance  of $83  million  was  offset  by the  elimination  of a
     valuation allowance.

(b)  Basic  earnings  per common  share were  calculated  using  average  shares
     outstanding  during the  period.  Diluted  earnings  per common  share were
     calculated  using average shares and common stock  equivalents  outstanding
     during  the  period.  Consequently,  the sum of the  four  quarters  is not
     necessarily additive to the total for the year.

(c)  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 January 31, 1998: Common - 4,704;  Preferred -
     none.
<PAGE>
<TABLE>

                                                  USG CORPORATION
                                         FIVE-YEAR SUMMARY (a) (unaudited)
                                   (dollars in millions, except per share data)


                                                                                                  
                                                                                                  May 7    January 1  
                                                            Years ended December 31,             through    through                 
                                                            ------------------------            December 31   May 6,
                                                       1997       1996       1995       1994       1993       1993
                                                       ----       ----       ----       ----       ----       ----
<CAPTION>
<S>                                                <C>        <C>        <C>        <C>        <C>        <C>
Earnings Statement Data:
Net sales........................................  $   2,874  $   2,590  $   2,444  $   2,290  $   1,325  $    591
Gross profit.....................................        787        645        603        517        263       109
Selling and administrative expenses..............        281        268        244        244        149        71
Amortization of excess reorganization value......        127        169        169        169        113         -
Operating profit.................................        379        208        190        104          1        38
Interest expense.................................         60         75         99        149         92        86
Interest income..................................        (3)         (2)        (6)       (10)        (4)       (2)
Other expense (income), net......................         2           3         32          3         (8)        6
Reorganization items.............................         -           -          -          -          -      (709)
Earnings (loss) before extraordinary items
   and changes in accounting principles..........       148          15        (32)       (92)      (108)      640
Extraordinary gain (loss), net of taxes..........         -           -          -          -        (21)      944
Cumulative effect of accounting changes..........         -           -          -          -          -      (150)
Net earnings (loss)..............................       148          15        (32)       (92)      (129)    1,434
Net earnings (loss) per common share (b):
   Basic.........................................      3.19        0.32      (0.71)     (2.14)     (3.46)
   Diluted.......................................      3.03        0.31      (0.71)     (2.14)     (3.46)

Balance Sheet Data (as of the end of the period):
Working capital .................................       264         159        167        311        185       271
Current ratio....................................      1.70        1.41       1.46       1.83       1.41      2.02
Property, plant and equipment, net...............       982         887        842        755        754       767
Total assets.....................................     1,926       1,864      1,927      2,173      2,195     2,234
Total debt (c)...................................       620         772        926      1,149      1,531     1,556
Total stockholders' equity (deficit).............       147         (23)       (37)        (8)      (134)        4

Other Information:
EBITDA...........................................       572         437        417        325        155        63
Capital expenditures.............................       172         120        147         64         29        12
Gross margin %...................................      27.4        24.9       24.7       22.6       19.8      18.4
EBITDA margin %..................................      19.9        16.9       17.1       14.2       11.7      10.7
Market value per common share (b)................     49.00       38.88      30.00      19.50      29.25
Average number of employees......................    13,000      12,500     12,400     12,300     11,900    11,750
</TABLE>


(a)  Due  to  a  financial  restructuring  and  implementation  of  fresh  start
     accounting, financial statements for periods subsequent to May 6, 1993, are
     not  comparable  to  financial  statements  for periods  through that date.
     Accordingly, a vertical line has been added to separate such information.

(b)  Per share  information for the period of January 1 through May 6, 1993, was
     omitted  because,   as  a  result  of  the  financial   restructuring   and
     implementation  of fresh start  accounting,  it is not  meaningful.  Market
     value per common share  reflects the closing  stock price on December 31 of
     the applicable year.

(c)  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 were $755 million,  $907
     million,  $1,122 million,  $1,476 million and $1,461 million as of December
     31, 1996, 1995, 1994 and 1993, and May 6, 1993, respectively.

                                   EXHIBIT 21
                                  SUBSIDIARIES


     The companies listed below are the primary subsidiaries of the Corporation.
The financial  data for these  subsidiaries,  as well as for other  subsidiaries
which are not considered to be significant and are therefore  excluded from this
exhibit, comprised the Corporation's consolidated financial statements.


<TABLE>
                                                                                           Organized Under
Name of Company                                                                                Laws of
- ---------------                                                                                -------

Domestic:
<CAPTION>
<S>                                                                                            <C>
United States Gypsum Company(a).........................................................       Delaware
USG Interiors, Inc. (a).................................................................       Delaware
L&W Supply Corporation (a)(b)...........................................................       Delaware
USG International, Ltd..................................................................       Delaware
USG Foreign Investments, Ltd. (a).......................................................       Delaware
USG Interiors International, Inc........................................................       Ohio
USG Funding Corporation.................................................................       Delaware
La Mirada Products Co., Inc.............................................................       Ohio
USG Foreign Sales Corporation...........................................................       Virgin Islands
Gypsum Engineering Company..............................................................       Delaware
Alabaster Assurance Company, Ltd........................................................       Vermont


International:

CGC Inc. (a)............................................................................       Canada
USG Canadian Mining Ltd.................................................................       Ontario
Gypsum Transportation Limited...........................................................       Bermuda
Yeso Panamericano, S.A. de C.V..........................................................       Mexico
USG Manufacturing Worldwide, Ltd........................................................       Caymans
Panama Gypsum Company...................................................................       Panama
USG Interiors (Donn) S.A................................................................       Belgium
Donn Products GmbH......................................................................       Germany
USG Interiors Eastern Manufacturing GmbH................................................       Germany
USG Interiors East Sales GmbH...........................................................       Germany
USG (U.K.) Ltd..........................................................................       United Kingdom
USG France S.A..........................................................................       France
USG (Netherlands) B.V...................................................................       Netherlands
USG Interiors (Europe) S.A..............................................................       Belgium
USG Interiors Coordination Centre S.A...................................................       Belgium
USG Belgium Holdings S.A................................................................       Belgium
USG Asia Pacific Holdings Pty. Ltd......................................................       Singapore
USG Interiors Pacific Ltd...............................................................       New Zealand
USG Interiors Australia Pty. Ltd........................................................       Australia
USG Interiors (Far East) SDN BHD........................................................       Malaysia
Shenzhen USG Zhongbei Building Materials Co. (60% ownership)............................       China
Alabaster Engineering (Nederland) B.V...................................................       Netherlands
Red Top Technology (Nederland) B.V......................................................       Netherlands
</TABLE>

(a)  Accounts for material revenues.

(b) As of December 31, 1997,  L&W Supply  conducted its business out of 176
locations in 34 states using various names registered  under applicable  assumed
business name statutes.


                                   EXHIBIT 23

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent  public  accountants,  we hereby consent to the  incorporation by
reference of our reports dated January 22, 1998,  included in this Form 10-K for
the year ended  December  31,  1997,  into the  Corporation's  previously  filed
Registration  Statements Nos. 33-40136 and 33-64217 on Form S-3 and 33-22581, as
amended, 33-22930,  33-36303, 33-52573, 33-52715, 33-63554 and 33-65383 on Form
S-8.



                                                     /s/ Arthur Andersen LLP
                                                     -----------------------
                                                     ARTHUR ANDERSEN LLP

Chicago, Illinois
January 22, 1998



                                   EXHIBIT 24
                                POWER OF ATTORNEY

KNOW ALL MEN BY THESE  PRESENTS,  that each  person  whose  name  appears  below
constitutes  and  appoints  Richard H.  Fleming,  Raymond  T. Belz,  and Dean H.
Goossen  and each of them,  his or her true  and  lawful  attorneys-in-fact  and
agents,  with full power of substitution and  resubstitution,  for and in his or
her name, place and stead, in any and all capacities,  to sign the Annual Report
on Form 10-K for the year ending December 31, 1997 of USG Corporation and any or
all amendments  thereto,  and to file the same, with all exhibits  thereto,  and
other  documents  in  connection  therewith,  with the  Securities  and Exchange
Commission,  granting unto said  attorneys-in-fact and agents, and each of them,
full  power  and  authority  to do and  perform  each and  every  act and  thing
requisite and  necessary to be done in and about the  premises,  as fully to all
intents and purposes as he or she might or could do in person,  hereby ratifying
and  confirming  all that said  attorneys-in-fact  and agents or any of them, or
their or his substitutes, may lawfully do or cause to be done by virtue hereof.
<TABLE>
     This  power of  attorney  has been  signed as of the 10th day of  February,
1998, by the following persons:
<CAPTION>
<S>                                                  <C>
/s/ William C. Foote                                 /s/ W.H. Clark
- --------------------                                 --------------
William C. Foote,                                    W. H. Clark,
Director, Chairman of the Board                      Director
and Chief Executive Officer

/s/ P.J. O'Bryan                                     /s/ James C. Cotting
- ----------------                                     --------------------
P.J. O'Bryan,                                        James C. Cotting,
Director, President and Chief                        Director
Operating Officer

/s/ Robert L. Barnett                                /s/ Lawrence M. Crutcher
- ---------------------                                ------------------------
Robert L. Barnett,                                   Lawrence M. Crutcher,
Director                                             Director

/s/ Keith A. Brown                                   /s/ W. Douglas Ford
- ------------------                                   -------------------
Keith A. Brown,                                      W. Douglas Ford,
Director                                             Director

/s/ David W. Fox                                     /s/ John B. Schwemm
- ----------------                                     -------------------
David W. Fox,                                        John B. Schwemm,
Director                                             Director

/s/ Philip C. Jackson, Jr.                           /s/ Judith A. Sprieser
- --------------------------                           ----------------------
Philip C. Jackson, Jr.                               Judith A. Sprieser,
Director                                             Director

/s/ Marvin E. Lesser
- --------------------
Marvin E. Lesser
Director
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000,000
       
<S>                                                        <C>
<PERIOD-TYPE>                                              12-MOS
<FISCAL-YEAR-END>                                          DEC-31-1997
<PERIOD-END>                                               DEC-31-1997
<CASH>                                                       72
<SECURITIES>                                                  0
<RECEIVABLES>                                                314
<ALLOWANCES>                                                 17
<INVENTORY>                                                  208
<CURRENT-ASSETS>                                             640
<PP&E>                                                      1,218
<DEPRECIATION>                                               236
<TOTAL-ASSETS>                                              1,926
<CURRENT-LIABILITIES>                                        376
<BONDS>                                                      610
                                         0
                                                   0
<COMMON>                                                      5
<OTHER-SE>                                                   142
<TOTAL-LIABILITY-AND-EQUITY>                                1,926
<SALES>                                                     2,874
<TOTAL-REVENUES>                                            2,874
<CGS>                                                       2,087
<TOTAL-COSTS>                                               2,087
<OTHER-EXPENSES>                                             281
<LOSS-PROVISION>                                              0
<INTEREST-EXPENSE>                                           57
<INCOME-PRETAX>                                              320
<INCOME-TAX>                                                 172
<INCOME-CONTINUING>                                          148
<DISCONTINUED>                                                0
<EXTRAORDINARY>                                               0
<CHANGES>                                                     0
<NET-INCOME>                                                 148
<EPS-BASIC>                                                 3.19
<EPS-DILUTED>                                               3.03
        

</TABLE>


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