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                                                                    EXHIBIT 99.B

MEDIA INQUIRIES:  ROBERT WILLIAMS (312) 606-4356
INVESTOR RELATIONS:  JIM BENCOMO  (312) 606-4125



                        USG CORPORATION RECEIVES APPROVAL
                     OF FIRST-DAY ORDERS IN CHAPTER 11 CASE

                     DIP FINANCING GRANTED INTERIM APPROVAL


     Chicago, June 27, 2001 -- USG Corporation (NYSE:USG) announced today that
it has received Bankruptcy Court approval to, among other things, pay
pre-petition and post-petition employee wages, salaries and benefits during its
voluntary Chapter 11 case. As previously announced, USG and its major U.S.
subsidiaries filed voluntary petitions for reorganization under Chapter 11 of
the Bankruptcy Code on June 25, 2001 to manage the growing asbestos litigation
costs of its United States Gypsum Company subsidiary and to resolve asbestos
claims in a fair and equitable manner.

     The Court also approved $150 million of interim debtor-in-possession (DIP)
financing for immediate use by the Company to continue operations, pay
employees, and purchase goods and services going forward. In conjunction with
the filing, USG received commitments for up to $350 million in DIP financing
from JP Morgan Chase to supplement liquidity and fund operations during the
restructuring process. A final hearing on the DIP agreement is expected to occur
in 30 to 60 days.


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USG RECEIVES APPROVAL/2

     Chairman, President and Chief Executive Officer William C. Foote said he
was pleased with the Bankruptcy Court's prompt approval of its "first-day"
orders and interim DIP financing.

     "We expect the DIP financing to provide adequate funding for our
post-petition trade and employee obligations," Foote said, noting that since the
filing earlier this week, the Company has contacted many of its major suppliers
and customers, who have expressed their support of USG and its initiatives
toward resolution of the asbestos liability.

     The Court also granted approval for the Company to honor customer programs
in place at the time of the filing, including rebates, credits and discounts on
previously purchased goods.

     Foote said that USG's operations continue without interruption during the
Chapter 11 process. "Our operations remain open for business and will maintain
their commitment to safety, and to providing quality products and superior
service to their customers. Vendors will be paid for all goods furnished and
services provided after the filing. Employee wages and benefit programs will
continue as before."

     USG and its subsidiaries filed their voluntary petitions in the U.S.
Bankruptcy Court for the District of Delaware in Wilmington. The filing also
included U.S. subsidiaries United States Gypsum Company, USG Interiors, Inc. and
L&W Supply Corporation. USG's international operations were excluded from the
filing.

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USG RECEIVES APPROVAL/3

     USG Corporation is a Fortune 500 company with subsidiaries that are market
leaders in their key product groups: gypsum wallboard, joint compound, cement
board and related gypsum products; ceiling tile and grid; and building products
distribution. Additional information about the Company's restructuring is
available at www.usg.com.

     This press release contains forward-looking statements related to
management's expectations about future business conditions. Actual business
conditions may differ significantly from management's expectations and
accordingly affect the corporation's sales and profitability. Actual results may
differ as a result of factors over which the corporation has no control,
including economic activity, such as new housing construction, interest rates,
currency exchange rates and consumer confidence; competitive activity such as
price and product competition; asbestos litigation; and increases in raw
material and energy costs. Additional information about the factors that affect
the corporation's financial results is included in the corporation's SEC
filings. The corporation assumes no obligation to update the forward-looking
information contained in this release.

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