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United States Steel Corporation headquartered in Pittsburgh, Pa., manufactures a wide variety of steel sheet, tubular and tin products; coke, and taconite pellets; and has a worldwide annual raw steel capability of 26.8 million net tons. 
U. S. Steel's domestic primary steel operations are: Gary Works in Gary, Ind.; Great Lakes Works in Ecorse and River Rouge, Mich.; Mon Valley Works, which includes the Edgar Thomson and Irvin plants, near Pittsburgh and Fairless Works near Philadelphia, Pa.; Granite City Works in Granite City, Ill.; Fairfield Works near Birmingham, Ala.; Midwest Plant in Portage, Ind.; and East Chicago Tin in East Chicago, Ind.  The company also operates a seamless tubular mill, Lorain Pipe Mills, in Lorain, Ohio.

U. S. Steel produces coke at Clairton Works near Pittsburgh, at Gary Works and Granite City Works. On Northern Minnesota's Mesabi Iron Range, U. S. Steel's iron ore mining and taconite pellet operations, Minnesota Taconite (Minntac) and Keewatin Taconite (Keetac), support the steelmaking effort, and its subsidiary ProCoil Company provides steel distribution and processing services.
  

Internationally, U. S. Steel has steelmaking subsidiaries in Kosice, Slovakia U. S. Steel Kosice, s.r.o. and U. S. Steel Serbia in Sabac and Smederevo, Serbia

In addition to primary steel operations, U. S. Steel participates in several joint ventures: USS-POSCO Industries, Pittsburg, Ca.; PRO-TEC Coating Company, Leipsic, Ohio; Worthington Specialty Processing, Jackson, Mich.; Double Eagle Steel Coating Company, Dearborn, Mich.; Van Buren, Mich.Double G Coating Company, Jackson, Miss.; and Acero Prime, San Luis Potosi, Mexico. 

U. S. Steel is also involved in a number of other businesses, among them transportation (Transtar, Inc.), real estate development, technology licensing and engineering and consulting services (UEC Technologies LLC [UEC]), and leasing and financial services.

Guided by a new Vision for its second century of business, U. S. Steel remains committed to Making Steel, its core focus for more than 100 years; strengthening its position in the global marketplace to remain World Competitive; and Building Value for its stakeholders. 

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The History of United States Steel Corporation

When founded in 1901, United States Steel Corporation was the largest business enterprise ever launched, with an authorized capitalization of 
$1.4 billion.  Throughout the years, U. S. Steel responded to changing economic conditions and new market opportunities through diversification and periodic restructuring.  Today, 101 years after its founding, U. S. Steel remains the largest integrated steel producer in the United States. 

1901 logo

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United States Steel Corporation's Founding Fathers
Andrew Carnegie J.P. Morgan Charles Schwab Elbert H. Gary
Andrew Carnegie J.P. Morgan Charles Schwab Elbert H. Gary

U. S. Steel had its origins in the dealings of some of America's most legendary businessmen, including Andrew Carnegie, J.P. Morgan, and Charles Schwab. However, its principal architect was Elbert H. Gary, who also became U. S. Steel's first chairman. At the turn of the century, a group headed by Gary and Morgan bought Carnegie's steel company and combined it with their holdings in the Federal Steel Company. These two companies became the nucleus of U. S. Steel, which also included American Steel & Wire Co., National Tube Company, American Tin Plate Co., American Steel Hoop Co., and American Sheet Steel Co. In its first full year of operation, U. S. Steel made 67 percent of all the steel produced in the United States.

Mon Valley Works

In the decades that followed, the corporation consolidated its various steelmaking and raw material subsidiaries and divisions through a series of reorganizations. Many of the corporation's divisions were related to or grew out of the company's original steel operations.  Significant diversification and restructuring actions occurred in the 1980s, particularly in 1982, when the corporation became involved in the energy industry with its acquisition of Marathon Oil Company.  In early 1986, the corporation expanded its energy business when it acquired Texas Oil & Gas Corp.  

In late 1986, recognizing the fact that it had become a vastly different corporation, 
U. S. Steel Corporation changed its name to USX Corporation, with principal operating units involved in energy, steel and diversified businesses. 

steel slabs

The 1980s also brought significant changes to the corporation's steel operations. In response to economic changes in the steel industry, the corporation reduced its domestic raw steel production capability through a number of restructurings. In addition, the corporation entered into several steel joint ventures with both domestic and foreign partners.

At the same time, many of the units among the corporation's diversified businesses were sold or combined into joint venture enterprises. These included chemicals and agri-chemicals businesses, an oil field supply business, domestic transportation subsidiaries and raw materials properties worldwide. 
 

USX Split Stock - U. S. Steel Group and Marathon Group

Turning to the financial structure of the corporation, in  1991, shareholders approved a proposal to change the capitalization of the corporation. A new class of common stock was issued, USX-U. S. Steel  Group Common Stock (NYSE: X), to reflect the performance of the corporation's steel and diversified businesses. USX Corporation common stock was changed into USX-Marathon Group Common Stock (NYSE: MRO) to reflect the energy side of the business. 
 

In October 2001, USX Corporation shareholders voted to adopt a plan of reorganization.  The plan resulted in the tax-free spin-off of the steel and steel-related businesses of USX into a freestanding, publicly traded company known as United States Steel Corporation -- the name of the corporation when it was established a century earlier. The remaining energy businesses of USX became Marathon Oil Corporation.

Holders of the former USX-U. S. Steel Group Common Stock became holders of United States Steel Corporation Common Stock (NYSE: X) and holders of the former USX-Marathon Group Common Stock became holders of Marathon Oil Corporation Common Stock (NYSE: MRO).

The two new companies officially began operating independently on January 1, 2002.

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