Exhibit 99.1


                    UNITED STATES STEEL CORPORATION COMPLETES
                           ACQUISITION OF STELCO INC.
                  U. S. Steel Canada management team announced

     PITTSBURGH, Oct. 31, 2007 - United States Steel Corporation (NYSE: X)
announced today that it has completed the acquisition of Stelco Inc. and that
Stelco has been renamed U. S. Steel Canada Inc.
     Commenting on the acquisition, U. S. Steel Chairman and CEO John Surma
said, "We welcome the customers, employees and communities of Stelco to the U.
S. Steel family.  This acquisition expands the footprint of our North American
flat-rolled operations with facilities on both sides of the Great Lakes to
better respond to customer needs, including the ability to process U. S. Steel
Canada slabs at other U. S. Steel facilities."
     In this transaction, each share of Stelco common stock has been converted
into the right to receive $38.50 Canadian per share, and warrants to acquire
Stelco common stock have been converted into the right to receive $27.50
Canadian.  CIBC Mellon Trust Company has been appointed Depositary for both
common stock and warrants.  Holders of common stock and warrants should submit
certificates for their common stock and warrants together with the required
letter of transmittal to the Depositary.  Questions can be directed to the
Depositary at (800) 387-0825.
     U. S. Steel has financed the acquisition cost of approximately $1.2 billion
and the refinancing of approximately $750 million of existing Stelco debt
through a combination of cash on hand, borrowings under a $500 million three-
year term loan and a $400 million one-year term loan, and $400 million of sales
under a receivables purchase agreement that expires in 2010.
     In addition, U. S. Steel named the management team for U. S. Steel Canada.
Douglas R. Matthews has been named president and general manager-U. S. Steel
Canada; William C. Harrison has been named vice president and chief financial
officer-U. S. Steel Canada; Charles J. Shuster has been named director-human
resources, U. S. Steel Canada; Scott D. Buckiso has been named plant manager-
Lake Erie Works; and Bryan P. Vaughn has been named plant manager-Hamilton
Works.  The changes are effective immediately.
     "The leadership team that will oversee U. S. Steel Canada is composed of
individuals with strong, diverse backgrounds acquired during years of service at
U. S. Steel facilities in the United States and Central Europe," said Surma.
"Their experience, coupled with the talents and expertise of the employees they
will work side-by-side with, will help ensure a smooth transition for the
operations and the customers they serve."
     Matthews arrives in Canada from U. S. Steel Serbia, an integrated
steelmaking operation with annual raw steel production capability of 2.4 million
net tons.  As vice president and general director of U. S. Steel Serbia since
May 2006, he has been responsible for overseeing all activities at facilities in
Smederevo, Sabac and Kucevo.  Harrison has spent the last four years serving as
controller at Great Lakes Works near Detroit, Mich.  Shuster was recently
promoted to manager of employee relations for Mon Valley Works, which has
facilities near Pittsburgh and Philadelphia, Pa., after spending nearly one and
a half years in the same role at Great Lakes Works.  Buckiso has acted as
general manager-finishing at U. S. Steel Serbia's Smederevo location since
September 2006.  Vaughn has served as plant manager for the Irvin Plant and
Fairless Plant, Mon Valley Works' finishing facilities located just outside
Pittsburgh and Philadelphia, Pa., respectively, since June 2006.

                                       ###

    Additional Biographical Information on U. S. Steel Canada Management Team


Douglas R. Matthews

     Douglas R. Matthews, 42 and a native of Uniontown, Pa., joined U. S. Steel
in 1988 as a management associate at the Edgar Thomson Plant, Mon Valley Works'
steelmaking facility near Pittsburgh, Pa.  He progressed through increasingly
responsible management roles in electrical and caster maintenance at the Edgar
Thomson Plant and the coating operations at Mon Valley Works' Irvin Plant, a
Pittsburgh-area rolling and finishing facility, before being transferred to PRO-
TEC Coating Company, U. S. Steel's joint venture with Kobe Steel of Japan
located in Leipsic, Ohio, in 1997 to manage the installation and commissioning
of the facility's second continuous galvanizing line.
     From 1998 to 2003, he oversaw iron production at the former USS/KOBE
steelmaking venture in Lorain, Ohio, and at Gary Works in Gary, Ind.,
respectively.  He was named division manager of steelmaking and casting at Gary
Works in 2003 and was promoted to general manager of blast furnace engineering
and technology at the company's Pittsburgh headquarters in 2005.  He was
appointed to his most recent position, vice president and general director of U.
S. Steel Serbia, d.o.o., in May 2006.
     Matthews graduated from Pennsylvania State University in 1987 with a
bachelor's degree in electrical engineering and received a master's degree in
business administration from Duquesne University in 1993.
     He and his wife, Kimberly, and their two children will relocate from Serbia
to southern Ontario.


William C. Harrison

    William C. Harrison, 57, started his U. S. Steel career in 1973 as an
inventory control clerk at Mon Valley Works' Irvin Plant near Pittsburgh.  He
was accepted into the company's management training program in 1976 and was
assigned to the financial organization of the former American Bridge Division,
where he steadily advanced through supervisory roles.  From 1985 through 1994,
Harrison served as an administrator in USS Real Estate at corporate headquarters
in Pittsburgh and then advanced through increasingly responsible positions in
the plant accounting department at Mon Valley Works' Fairless Plant near
Philadelphia, Pa.  In 1994, he transferred to Gary Works in Gary, Ind., where he
spent the next nine years acting as financial analysis manager and then
accounting services manager.  He was promoted to his most recent position,
controller of Great Lakes Works near Detroit, Mich., in 2003.
    Harrison is a native of Montoursville, Pa., and attended Indiana University
of Pennsylvania, where he earned a bachelor's degree in business administration
in 1971.  He is a Certified Management Accountant (CMA).
    Harrison and his wife, Diane, will reside in southern Ontario.


Charles (Gus) J. Shuster

    Charles (Gus) J. Shuster, 41, joined U. S. Steel in 1997 as a supervisor in
the labor relations and productivity improvement department at Clairton Works,
Mon Valley Works' coke making facility near Pittsburgh, Pa.  Shuster advanced
through positions in employee and labor relations at Gary Works' East Chicago
Tin in East Chicago, Ind., and Great Lakes Works outside Detroit, Mich., before
being named Great Lakes Works' manager of employee relations in 2005.  Shuster
returned to Pittsburgh in 2007 after being promoted to manager of employee
relations for the entire Mon Valley Works, which includes Clairton Works, the
Edgar Thomson Plant and the Irvin Plant outside Pittsburgh, and the Fairless
Plant near Philadelphia.
    Shuster, a native of Falls Church, Va., earned a Bachelor of Science degree
in civil engineering from the Virginia Military Institute in 1988.  After
graduating from VMI, he served five years as an officer in the United States
Marine Corps.
    Shuster plans to live in southern Ontario.


Scott D. Buckiso

     Scott D. Buckiso, 40, joined U. S. Steel in 1990 as a management associate
at Mon Valley Works' Irvin Plant, a rolling and finishing facility near his
native Pittsburgh, Pa.  Over the next 13 years, he was promoted through a series
of increasingly responsible positions in finishing operations at the Irvin
Plant, as well as casting at the Edgar Thomson Plant, Mon Valley Works' iron and
steel making operation outside Pittsburgh.
     In 2003, Buckiso was named senior area manager of finishing at Great Lakes
Works just outside Detroit, Mich.  One year later, he advanced to division
manager of rolling, and in 2005, he added oversight of Great Lakes Works'
finishing operations to his area of responsibility.  Buckiso began his most
recent assignment, general manager of finishing at U. S. Steel Serbia's
Smederevo facility, in September 2006.
     Buckiso is a 1990 graduate of the University of Maryland with a degree in
Communication and Speech.
     He and his wife, Donna, and their two children will move to southern
Ontario.


Bryan P. Vaughn

     Bryan P. Vaughn, 50 and a native of Denver, Co., began his U. S. Steel
career in 1981 as a management associate at the company's former Geneva Works in
Utah.  From 1981 through 1995, he advanced through increasingly responsible
positions in steelmaking at Geneva Works, purchasing at corporate headquarters
in Pittsburgh, Pa., and casting at Mon Valley Works' Edgar Thomson Plant outside
Pittsburgh.  After working at U. S. Steel's Research and Technology Center near
Pittsburgh as a research consultant, Vaughn was transferred to Gary Works, U. S.
Steel's largest U.S. facility, in 1997 to serve as division manager-steel
production and casting, south.  Three years later, he was promoted to the same
position for north steel production and casting, and in 2003, he advanced to
division manager of sheet products.  He was promoted to his most recent
position, plant manager of Mon Valley Works' Irvin Plant, in June 2006 and was
responsible for overseeing all rolling and finishing operations at the suburban
Pittsburgh facility as well as the galvanizing line at the Fairless Plant near
Philadelphia, Pa.
     Vaughn graduated from Colorado School of Mines in 1980 with a Bachelor of
Science degree in metallurgical engineering.  He earned a master's degree in
business administration at the University of Utah in 1991.
     He and his wife, Sandy, will make their home in southern Ontario.

                                      -oOo-
2007-051
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